AAT3608IIC-1-T1 Datasheet PDF & Specifications

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AAT3608 SKYWORKS

Document overview

Manufacturer or author: Provided By digicamel.com
PDF pages: 44

Technical content

Features

2.7V to 5.5V Operating Input Voltage Range
Adapter or USB Single Input Linear Charger
Battery Charger Digital Thermal Regulation
Battery Temperature Monitoring
Battery Charger Includes Programmable Timer
Input Load Switch
Dual 800mA Monolithic Switching Converters ▪ 1.5MHz Switching Frequencies ▪ 95% Efficiency ▪ Independent Input Power and Ground ▪ Buck1 Output Programmable With External Resistors ▪ Buck 2 Feedback Voltage is Dynamically Adjustable between 0.5V and 0.7V with I2C Interface
Five Channel LDO Regulators ▪ 300mA, Output Adjustable via Two Logic Inputs ▪ 80mA, Output Adjustable via I2C Interface ▪ 50mA, 2.5V Output Voltage ▪ 50mA, 3.3V Output Voltage ▪ 80mA with 1.2V Fixed Output ▪ 3% Accuracy and 1.5% Typical Transient Accuracy
Very Low Shutdown Current
Power-On Push Button
Status Outputs ▪ Interrupt, Reset and Status Pins, Low Battery Flag
Separate Enable Pin for LDO2, LDO4, LDO5, and Buck2 (when mask is removed)
Over-Current and Over-Thermal Protection
5mmx5mm, 40-Pin TQFN Package

Applications

GPS
Handheld Devices
Mobile Media Players
MP3
Portable Navigation

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Application Circuit SYSOUT C13 PGND2 LDO1 LDO2 LDO3 LDO4 LDO5 Buck 2 C3 C1 C2 CSYSOUT C10 C12 VIN VBAT C14 C15 C16 C17 PGND1 STAT ISETA TS CT LDO2 INLDO LDO3 LDO1 INLDO LDO4 LDO5 PBSTAS RESET INT LBO LBI GND PWR_EN FB2 LX2 INBUCK LX1 FB1 BAT SDA SCL PWR_HOLD PWR_ON EXT_ON SYSOUT SYSOUTPWR_ID PWR_IN PWR_IN USBSEL AAT3608 PGND Buck 1 PGND1 PGND2 BAT

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Pin Descriptions Pin # Symbol Function 1 STAT Open drain (pull-down) output for battery charging status. 2 ISETA Input pin for charge current programming for the adapter. Connect a 1.24kΩ resistor to get 800mA of charging current. Can be used to monitor charging current. 3 TS Battery temperature sense pin with 75μA output current. Connect the battery’s NTC 10kΩ resistor from this pin to ground. A Beta range of 3300 to 4000 will place the typical charging temperature between -4°C and 48°C. 4 CT Charger safety timer pin. A 0.1μF ceramic capacitor should be connected between this pin and GND. Connect directly to GND to disable the timer function. 5 LDO2 Output for LDO2 regulator. 6 INLDO Input power for LDO regulators. 7 LDO3 Output for LDO3 regulator. 8 LDO1 Output for LDO1 regulator. 9 INLDO Input power for LDO regulators. 10 LDO4 Output for LDO4 regulator. 11 LDO5 Output for LDO5 regulator. 12 PBSTAS Open drain (pull-down) output for PWR_ON status. When PWR_ON is high, PBSTAS will be low (after the debounce time). When PWR_ON is low, PBSTAS will be high (or equal to the voltage to which that external pull-up resistor is connected). 13 RESET Open drain (pull-down) active-low output for reset. After Buck2 is OK, there is a delay of 200ms before RESET goes High. RESET pin is low in shutdown. 14 INT Open drain (pull-down) active-low output for interrupt. When any of the I2C read bits (except the DS_RDY and PWR_DS bits) change state this pin will pull low. It will be released again after a read from the I2C is complete. 15 LBO Open drain (pull-down) active-low output for low-battery comparator. When the battery is low, LBO will pull down. 16 LBI Feedback input for low-battery comparator. The LBI threshold is 1.0V. 17 GND Ground. 18 S2 S1 and S2 bits set the output voltage for LDO1. 19 S1 S1 and S2 bits set the output voltage for LDO1. 20 PWR_EN Enable for LDO2, LDO4, and LDO5 for default condition. Buck2 can also be controlled by PWR_EN only if the SOC masks PWR_EN through I2C, refer to the "I2C Serial Interface and Programmability" section of this datasheet for additional information. 21 FB2 Feedback input for Buck2 regulator. 22 PGND2 Power ground for Buck2 regulator. 23 LX2 Switching node for Buck2 regulator. 24 INBUCK Input power for Buck regulators. 25 LX1 Switching node for Buck1 regulator. 26 PGND1 Power ground for Buck1 regulator. 27 FB1 Feedback input for Buck1 regulator. 28, 29 BAT Input for lithium-ion battery. 30 SDA I2C serial data pin. 31 SCL I2C serial clock pin. 32 PWR_HOLD Enable for the system. PWR_HOLD must be held high by the processor to keep system turned on. To shut down the device, the microcontroller should pull PWR_HOLD to ground. 33 PWR_ON Enable for the system. Connect a push-button from this pin to BAT to activate system. It is debounced for 320ms. 34 EXT_ON Alternate system enable; may be used by the RTC alarm or other system input. This pin's function is similar to PWR_ON; it has a similar 320ms debounce but does not affect the PBSTAS pin. 35, 36 SYSOUT System output. Connect to the INLDO and INBUCK input supply pins. 37 PWR_ID Logic input to identify the source of PWR_IN. 38, 39 PWR_IN Power Input. System input from adapter or USB. 40 USBSEL Logic input to select 500mA current limit and fast charge current (USBSEL=H) or 100mA current limit and fast charge (USBSEL=L). An internal pull-down resistor is connected to this pin. If is left floating,USBSEL is pulled to ground. EP EP For best thermal performance the exposed thermal pad must be thermally connected to a large exposed copper pad underneath the package. Additionally, the exposed thermal pad (EP), GND, and PGND must be electrically connected to ground copper.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Pin Configuration TQFN55-40 (Top View) 40 39 38 37 36 35 31 11 12 13 14 15 16 STAT ISETA TS CT LDO2 INLDO LDO4 LDO5 PBSTAS RESET INT LBO LBI PWR_EN FB1 BAT EP PGND1 LX1 FB2 BAT SDA SYSOUT SCL SYSOUT PWR_ID PWR_IN PWR_IN USBSEL 34 33 32 PWR_HOLD PWR_ON EXT_ON 17 18 19 20 GND INBUCK LX2 PGND2 LDO3 LDO1 INLDO Absolute Maximum Ratings1 Symbol Pin Name Value Units PWR_IN, PWR_ID, BAT, SYSOUT, SDA, SCL, RESET, STAT, USBSEL, ISETA, TS, CT, LBI, LBO, INT, PWR_EN, PWR_HOLD, PWR_ON, PBSTAS, EXT_ON, S1, S2 Voltage to GND -0.3 to 6.5 V INBUCK, INLDO Voltage to GND -0.3 to VSYSOUT + 0.3 V LX1, LX2, FB1, FB2 Voltage to PGND1, PGND2 -0.3 to VINBUCK + 0.3 V LDO1, LDO2, LDO3, LDO4, LDO5 Voltage to GND -0.3 to VINLDO + 0.3 V PGND1, PGND2 to GND -0.3 to +0.3 V TJ Operating Junction Temperature Range -40 to 150 °CTA Ambient Temperature Range -40 to 85 TS Storage Temperature Range -65 to 150 TLEAD Maximum Junction Soldering Temperature (at leads, 10 sec.) 300 Thermal Information2, 3, 4 Symbol Description Value Units θJA Thermal Resistance 25 °C/W PD Maximum Power Dissipation 4 W 1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time. 2. Thermal Resistance will be measured with the AAT3608 device on the 4-layer FR4 evaluation board in a thermal oven. The amount of power dissipation which will cause the thermal shutdown to activate will depend on the ambient temperature and the PC board layout ability to dissipate the heat. 3. Measured on the AAT3608 demo board. 4. Derate the maximum power dissipation by 40mW/°C above 25°C ambient temperature.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 1. Specification over the -40°C to +85°C operating temperature range is assured by design, characterization and correlation with statistical process controls. Electrical Characteristics1 VPWR_IN = 5V , VPWR_ID = 5V , VBAT = 3.6V, -40°C ≤ TA ≤ +85°C, unless noted otherwise. Typical values are TA = 25°C. Symbol Description Conditions Min Typ Max Units Power Supply VIN VINBUCK, VINLDO Input Operating Voltage 2.7 5.5 V PWR_IN UVLO Threshold Rising (100mV hysteresis) 4.5 V IOPS Sleep Mode Battery Operating Current VPWR_IN = 0V, Only LDO1, LDO3, and Buck1 are on 200 µA IOPDS Deep-Sleep Mode Battery Operating Current VPWR_IN = 0V, Only Buck1 is on 100 µA ISHDN Battery Shutdown Current VPWR_IN = 0V and system is shut down 10 µA Charger Voltage Regulation VBAT_REG Output Charge Voltage Regulation 0°C ≤ TA ≤ +70°C 4.158 4.2 4.242 V VMIN Preconditioning Voltage Threshold 2.6 2.8 3.0 V VRCH Battery Recharge Voltage Threshold 4.00 V Charger Current Regulation ICH_CC Constant-Current Mode ADP Charge Current RISETA = 1.24kΩ (for 0.8A) (Can be set to up to 1.2A) 800 mA USB Charge Current USBSEL = H, PWR_ID = L 500 mA USB Charge Current USBSEL = L, PWR_ID = L 100 mA KISET Charge Current Set Factor: ICH_CC/IISET Constant Current Mode 800 mA/mA ICH_PRE Preconditioning Charge Current RISETA = 1.24kΩ 12 % ICH_CC ICH_TERM Charge Termination Threshold Current 5 % ICH_CC Charging Device RDS(ON),CHG On-Resistance of Charging Transistor SYSOUT to BAT Switch 0.6 0.9 Ω Logic Control / Protection VPWR_HOLD, VPWR_ON, VUSBSEL Input High Threshold 1.4 V Input Low Threshold 0.3 V VINT, VSTAT Output Low Voltage Pin Sinks 4mA 0.4 V VOVP Over-Voltage Protection Threshold 4.3 V IOCP Over Current Protection Threshold 105 % ICH_CC TC Constant Current Mode Time Out CCT = 100nF

3 Hours

TK Trickle Charge Time Out TC/8 Hours TV Constant Voltage Mode Time Out 3 Hours ITS Current Source from TS Pin 69 75 79 µA TS1 TS Hot Temperature Fault Falling Threshold 318 331 346 mV Hysteresis 25 mV TS2 TS Cold Temperature Fault Rising Threshold 2.30 2.39 2.48 V Hysteresis 25 mV TLOOP_IN Thermal Loop Entering Threshold 115 °C TLOOP_OUT Thermal Loop Exiting Threshold 85 °C TREG Thermal Loop Regulation 100 °C Load Switches / SYSOUT LDO RDS(ON), BAT-SYSOUT On-Resistance of BAT-SYSOUT Load Switch 100 150 mΩ RDS(ON), PWR_IN-SYSOUT On-Resistance of PWR_IN-SYSOUT Load Switch 0.2 0.3 Ω PWR_IN-SYSOUT Current Limit 2 A PWR_IN-SYSOUT Current Limit USBSEL = High, PWR_ID = L 400 450 500 mA USBSEL = Low, PWR_ID = L 100 mA BAT-SYSOUT Current Limit 2 A

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Electrical Characteristics (continued)1 VPWR_IN = 5V , VPWR_ID = 5V , VBAT = 3.6V, -40°C ≤ TA ≤ +85°C, unless noted otherwise. Typical values are TA = 25°C. Symbol Description Conditions Min Typ Max Units Step-Down Buck Regulator (Buck1) VINBUCK Input Voltage Range 2.7 5.5 V VOUT Output Voltage Programmable Range Using External Feedback Resistors, No Load 0.6 VINBUCK V VREG Output Voltage Accuracy IOUT = 10mA 0.582 0.600 0.618 V ILIM P-Channel Current Limit 2600 mA RDS(ON)H High-Side Switch On-Resistance 450 mΩ RDS(ON)L Low-Side Switch On-Resistance 400 mΩ ΔVOUT / (VOUT ΔVIN) Line Regulation 0.2 %/V FOSC Oscillator Frequency 1.5 MHz Step-Down Buck Regulator (Buck2) VINBUCK Input Voltage Range 2.7 5.5 V VFB Feedback Voltage Programmable Range Using I2C, with Default FB = 0.6V 0.5 0.7 V VREG Output Voltage Accuracy IOUT = 10mA -3 +3 % ILIM P-Channel Current Limit 2600 mA RDS(ON)H High-Side Switch On-Resistance 450 mΩ RDS(ON)L Low-Side Switch On-Resistance 400 mΩ ΔVOUT / (VOUT ΔVIN) Line Regulation 0.2 %/V FOSC Oscillator Frequency 1.5 MHz Low-Dropout Regulator (LDO1) VINLDO Input Voltage Range 2.7 5.5 V VLDO LDO Output Voltage ILDO = 1mA to 300mA, S1 = 0, S2 = 0 2.91 3.00 3.09 V ILDO = 1mA to 300mA, S1 = 0, S2 = 1 3.20 3.30 3.40 V ILDO = 1mA to 300mA, S1 = 1, S2 = 0 2.71 2.80 2.89 V IQ LDO Quiescent Current VINLDO = 5V, added quiescent current when LDO is enabled 50 90 µA Line Regulation ILDO = 10mA 0.09 %/V Dropout Voltage ILDO = 300mA 100 170 mV ILDO LDO Maximum Load Current 500 mA ILDO(LIM) LDO Current Limit 800 mA Low-Dropout Regulator (LDO2) VINLDO Input Voltage Range 2.7 5.5 V VLDO LDO Output Voltage ILDO = 1mA to 80mA 1.164 1.2 1.236 V IQ LDO Quiescent Current VINLDO = 5V, added quiescent current when LDO is enabled 35 80 µA Line Regulation ILDO = 10mA 0.09 %/V ILDO LDO Maximum Load Current 200 mA ILDO(LIM) LDO Current Limit 800 mA Low-Dropout Regulator (LDO3) VINLDO Input Voltage Range 2.7 5.5 V Output Voltage Range Using I2C. Default=1.2V 0.8 1.4 V VLDO LDO Output Voltage ILDO = 1mA to 80mA -3 +3 % IQ LDO Quiescent Current VINLDO = 5V, added quiescent current when LDO is enabled 35 80 µA Line Regulation ILDO = 10mA 0.09 %/V ILDO LDO Maximum Load Current 200 mA ILDO(LIM) LDO Current Limit 800 mA 1. Specification over the -40°C to +85°C operating temperature range is assured by design, characterization and correlation with statistical process controls.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 1. Specification over the -40°C to +85°C operating temperature range is assured by design, characterization and correlation with statistical process controls. Electrical Characteristics (continued)1 VPWR_IN = 5V , VPWR_ID = 5V , VBAT = 3.6V, -40°C ≤ TA ≤ +85°C, unless noted otherwise. Typical values are TA = 25°C. Symbol Description Conditions Min Typ Max Units Low-Dropout Regulator (LDO4) VINLDO Input Voltage Range 2.7 5.5 V VLDO LDO Output Voltage ILDO = 1mA to 50mA 2.425 2.5 2.575 V IQ LDO Quiescent Current VINLDO = 5V, added quiescent current when LDO is enabled 50 80 µA Line Regulation ILDO = 10mA 0.09 %/V ILDO LDO Maximum Load Current 200 mA ILDO(LIM) LDO Current Limit 800 mA Low-Dropout Regulator (LDO5) VINLDO Input Voltage Range 2.7 5.5 V VLDO LDO Output Voltage ILDO = 1mA to 50mA 3.2 3.3 3.4 V IQ LDO Quiescent Current VINLDO = 5V, added quiescent current when LDO is enabled 50 80 µA Line Regulation ILDO = 10mA 0.09 %/V ILDO LDO Maximum Load Current 200 mA ILDO(LIM) LDO Current Limit 800 mA Reset and Low-Battery Comparator Buck2 Power OK Threshold Rising threshold 91 % Hysteresis 3 % Reset Time From Power OK of BUCK2 output to RESET pin rising edge 200 ms Low-Battery Threshold Voltage Falling Edge 0.96 1.0 1.04 V Hysteresis 50 mV Thermal TSD Over-Temperature Shutdown Threshold Rising 140 °C THYS Over-Temperature Shutdown Hysteresis 15 °C SCL, SDA (I2C Interface) FSCL Clock Frequency 0 400 kHz TLOW Clock Low Period 1.3 µs THIGH Clock High Period 0.6 µs THD_STA Hold Time for START Condition 0.6 µs TSU_STA Set-up Time for Repeated START Condition 0.6 µs TSU_DAT Data Setup Time 100 ns THD_DAT Data Hold Low Time 0.9 µs TSU_STO Setup Time for STOP Condition 0.6 µs TBUF Bus Free Time Between STOP and START Condition 1.3 µs VIL Input Threshold Low 2.7V ≤ VIN ≤ 5.5V 0.3 V VIH Input Threshold High 2.7V ≤ VIN ≤ 5.5V 1.4 V II Input Leakage Current -1.0 1.0 µA VOL Output Logic Low (SDA) IPULLUP = 3mA 0.3 V

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−Charger Power-In to SYSOUT Switch Current Limit I(PWRIN-SYSOUT) (A) V(PWRIN-SYSOUT) (V) 0.0 0.5 1.0 1.5 2.0 2.5 0.5A 2.0A Power-In to SYSOUT Switch Current Limit (100mA) I(PWRIN-SYSOUT) (mA) V(PWRIN-SYSOUT) (V) 100 120 140 160 180 IBAT vs. Temperature (100mA) Temperature (°C) IBAT (mA) -202 0-606 0 10004 0-408 0 98.4 98.6 98.8 99.0 99.2 99.4 99.6 99.8 100.0 100.2 IBAT vs. Temperature (500mA) Temperature (°C) IBAT (mA) -202 0-606 0 10004 0-408 0 493 494 495 496 497 498 499 500 501 Ideal Diode Load Switch between VBAT and VSYSOUT I(BAT-SYSOUT) (mA) V(BAT-SYSOUT) (V) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Constant Charging Current vs. RSET R SET (kΩ) Constant Charging Current (mA)11 00.1 100 1000 100 1000 10000 Constant Current Trickle Charge

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−Charger Adapter Mode Supply Current vs. RSET Resistor RSET (kΩ) IQ (mA) 11 00.1 100 1000 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Constant Current Preconditioning

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−Buck1 Efficiency vs. Load (VB1 = 2.5V; L1 = 2.2µH) Output Current (mA) Efficiency (%) 11 00.1 100 1000 100 VBAT = 3.3V VBAT = 3.6V VBAT = 3.9V VBAT = 4.2V Load Regulation (VB1 = 2.5V; L1 = 2.2µH) Output Current (mA) Output Voltage Error (%) 11 00.1 100 1000 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 VBAT = 3.3V VBAT = 3.6V VBAT = 3.9V VBAT = 4.2V No Load Total Input Current vs. VBAT Voltage (VEN = VBAT; Closed Loop) Input Current (mA) VBAT Voltage (V) 0.30 0.35 0.40 0.45 0.50 85°C 25°C -40°C Output Ripple (VBAT = 3.6V; VB1 = 2.5V; IOUTB1 = 1mA) Time (100µs/div) Output Voltage (middle) (V) LX Voltage (top) (V) Inductor Current (bottom) (A) 2.45 2.50 2.55 0.0 0.2 3.6 Output Ripple (VBAT = 3.6V; VB1 = 2.5V; IOUTB1 = 800mA) Time (500ns/div) Output Voltage (middle) (V) LX Voltage (top) (V) Inductor Current (bottom) (A) 2.48 2.50 2.52 0.6 0.8 1.0 3.6 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VOUTB1 = 2.5V; IOUTB1 = 800mA; falling) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) Output Voltage (bottom) (V) 2.1 2.3 2.5 2.7

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−Buck1 (continued) System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VOUTB1 = 2.5V; IOUTB1 = 800mA; rising) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) Output Voltage (bottom) (V) 2.1 2.3 2.5 2.7 System Load Transient Response (IOUTB1 = 80mA to 800mA; VBAT = 3.6V; COUTB1 = 4.7µF; CFF1 = 0pF) Time (100µs/div) Output Voltage (bottom) (V) Output Current (top) (A) 2.1 2.3 2.5 2.7 0.0 0.5 1.0 1.5 80mA 800mA Line Regulation (VOUT1 = 2.5V; L1 = 2.2µH) VBAT Voltage (V) Output Voltage Error (%) -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 IOUT = 50mA IOUT = 100mA IOUT = 400mA IOUT = 800mA Output Voltage Error vs. Temperature (VBAT = 3.6V; VOUT1 = 2.5V) Temperature (°C) Output Voltage Error (%) -250-502 55 07 5 100 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 IOUT1 = 10mA IOUT1 = 100mA IOUT1 = 400mA IOUT1 = 800mA Switching Frequency vs. Temperature (VIN = 3.6V; VOUT1 = 2.5V; IOUT1 = 800mA) Temperature (°C) Switching Frequency (MHz) -200-402 04 06 08 0 100 1.48 1.49 1.50 1.51 1.52 Switching Frequency vs. VBAT Voltage (VOUT1 = 2.5V; IOUT1 = 800mA) Frequency Variation (%) VBAT Voltage (V) -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 0.15 0.20

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−Buck1 (continued) Soft Start (VBAT = 3.6V; VOUT1 = 2.5V; IOUT1 = 800mA; CFF = 100pF) Time (100µs/div) EnableVoltage (top) (V) Output Voltage (middle) (V) Output Current (bottom) (A) 0.0 0.5 1.0

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−Buck2 Efficiency vs. Load (VB2 = 1.2V; L2 = 2.2µH) Output Current (mA) Efficiency (%) 11 00.1 100 1000 100 VBAT = 3.3V VBAT = 3.6V VBAT = 3.9V VBAT = 4.2V DC Regulation vs. Load (VB2 = 1.2V; L2 = 2.2µH) Output Current (mA) Output Error (%) 11 00.1 100 1000 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 VBAT = 3.3V VBAT = 3.6V VBAT = 3.9V VBAT = 4.2V Output Ripple (VBAT = 3.6V; VOUTB2 = 1.2V; IOUTB2 = 1mA) Time (50µs/div) Output Voltage (middle) (V) LX Voltage (top) (V) Inductor Current (bottom) (A) 1.18 1.20 1.22 0.0 0.2 0.4 3.6 Output Ripple (VBAT = 3.6V; VOUTB2 = 1.2V; IOUTB2 = 800mA) Time (500ns/div) Output Voltage (middle) (V) LX Voltage (top) (V) Inductor Current (bottom) (A) 1.18 1.20 1.22 0.6 0.8 1.0 3.6 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VOUTB2 = 1.2V; IOUTB2 = 800mA; falling) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) Output Voltage (bottom) (V) 1.0 1.1 1.2 1.3 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VOUTB2 = 1.2V; IOUTB2 = 800mA; rising) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) Output Voltage (bottom) (V) 1.0 1.1 1.2 1.3

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−Buck2 (continued) System Load Transient Response (IOUTB2 = 80mA to 800mA; VBAT = 3.6V; COUTB2 = 4.7µF; CFF1 = 0pF) Time (100µs/div) Output Voltage (bottom) (V) Output Current (top) (A) 1.0 1.1 1.2 1.3 0.0 0.5 1.0 1.5 80mA 800mA Line Regulation (VOUT2 = 2.5V; L2 = 2.2µH) VBAT Voltage (V) Output Voltage Error (%) -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 IOUT2 = 10mA IOUT2 = 50mA IOUT2 = 100mA IOUT2 = 400mA IOUT2 = 800mA Output Voltage Error vs. Temperature (VBAT = 3.6V; VOUT2 = 1.2V) Temperature (°C) Output Voltage Error (%) -250-502 55 07 5 100 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 IOUT2 = 10mA IOUT2 = 100mA IOUT2 = 400mA IOUT2 = 800mA Soft Start (VBAT = 3.6V; VOUT1 = 1.2V; IOUT2 = 800mA; CFF = 100pF) Time (100µs/div) EnableVoltage (top) (V) Output Voltage (middle) (V) Output Current (bottom) (A) 0.0 0.5 1.0

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−LDO1 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VLDO1 = 3V; ILDO1 = 300mA; rising) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) LDO1 Output Voltage (bottom) (V) 2.8 2.9 3.0 3.1 3.2 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VLDO1 = 3V; ILDO1 = 300mA; falling) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) LDO1 Output Voltage (bottom) (V) 2.8 2.9 3.0 3.1 Output Voltage Error vs. Temperature (VBAT = 3.6V; VLDO1 = 3.0V) Temperature (°C) LDO1 Output Voltage Error (%) -250-502 55 07 5 100 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 IOUT = 0.1mA IOUT = 10mA IOUT = 100mA IOUT = 150mA IOUT = 300mA Line Regulation (VLDO1 = 3.0V) VBAT Voltage (V) Output Voltage Error (%) -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 IOUT = 0.1mA IOUT = 1mA IOUT = 10mA IOUT = 100mA IOUT = 150mA IOUT = 300mA Load Transient Response (ILDO1 = 30mA to 300mA; VBAT = 3.6V; VLDO1 = 3V; CLDO1 = 4.7µF) Time (200µs/div) LDO1 Output Voltage (bottom) (V) LDO1 Output Current (top) (A) 2.90 2.95 3.00 3.05 0.0 0.1 0.2 0.3 0.4 Load Regulation (VBAT = 3.6V; VLDO1 = 3.0V) Output Current (mA) LDO1 Output Voltage Error (%) 11 00.1 100 1000 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−LDO1 (continued) Soft Start (VBAT = 3.6V; VLDO1 = 3.0V; ILDO1 = 150mA) Time (100µs/div) Enable Voltage (top) (V) LDO1 Output Voltage (middle) (V) LDO1 Output Current (bottom) (mA) 100 200

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−LDO2 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VLDO2 = 1.2V; ILDO2 = 80mA; rising) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) LDO2 Output Voltage (bottom) (V) 1.0 1.1 1.2 1.3 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VLDO2 = 1.2V; ILDO2 = 80mA; falling) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) LDO2 Output Voltage (bottom) (V) 1.0 1.1 1.2 1.3 Load Transient Response (ILDO2 = 8mA to 80mA; VBAT = 3.6V; VLDO2 = 1.2V; CLDO2 = 4.7µF) Time (200µs/div) LDO2 Output Voltage (bottom) (V) LDO2 Output Current (top) (mA) 1.16 1.18 1.20 1.22 100 150 Output Voltage Error vs. Temperature (VBAT = 3.6V; VLDO2 = 1.2V) Temperature (°C) LDO2 Output Voltage Error (%) -250-502 55 07 5 100 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 IOUT = 0.1mA IOUT = 1mA IOUT = 10mA IOUT = 100mA Line Regulation (VLDO2 = 1.2V) VBAT Voltage (V) LDO2 Output Accuracy (%) -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 IOUT = 0.1mA IOUT = 1mA IOUT = 10mA IOUT = 100mA Load Regulation (VBAT = 3.6V; VLDO2 = 1.2V) Output Current (mA) LDO2 Output Voltage Error (%) 11 00.1 100 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−LDO2 (continued) Soft Start (VBAT = 3.6V; VLDO2 = 1.2V; ILDO2 = 80mA) Time (100µs/div) Enable Voltage (top) (V) LDO2 Output Voltage (middle) (V) LDO2 Output Current (bottom) (mA) 100

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−LDO3 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VLDO3 = 1.2V; ILDO3 = 80mA; rising) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) LDO3 Output Voltage (bottom) (V) 1.0 1.1 1.2 1.3 1.4 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VLDO3 = 1.2V; ILDO3 = 80mA; falling) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) LDO3 Output Voltage (bottom) (V) 1.0 1.1 1.2 1.3 Load Transient Response (ILDO3 = 8mA to 80mA; VBAT = 3.6V; CLDO3 = 4.7µF) Time (200µs/div) LDO3 Output Voltage (bottom) (V) LDO3 Output Current (top) (mA) 1.16 1.18 1.20 1.22 100 150 Line Regulation (VLDO3 = 1.2V) VBAT Voltage (V) LDO3 Output Accuracy (%) -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 IOUT = 0.1mA IOUT = 1mA IOUT = 10mA IOUT = 100mA Output Voltage Error vs. Temperature (VBAT = 3.6V; VLDO3 = 1.2V) Temperature (°C) LDO3 Output Voltage Error (%) -250-502 55 07 5 100 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 IOUT = 0.1mA IOUT = 1mA IOUT = 10mA IOUT = 100mA Load Regulation (VBAT = 3.6V; VLDO3 = 1.2V) Output Current (mA) LDO3 Output Voltage Error (%) 11 00.1 100 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−LDO3 (continued) Soft Start (VBAT = 3.6V; VLDO3 = 1.2V; ILDO3 = 80mA) Time (100µs/div) Enable Voltage (top) (V) LDO3 Output Voltage (middle) (V) LDO3 Output Current (bottom) (mA) 100

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−LDO4 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VLDO4 = 2.5V; ILDO4 = 50mA; rising) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) LDO4 Output Voltage (bottom) (V) 2.3 2.4 2.5 2.6 2.7 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VLDO4 = 2.5V; ILDO4 = 50mA; falling) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) LDO4 Output Voltage (bottom) (V) 2.3 2.4 2.5 2.6 2.7 Load Transient Response (ILDO4 = 5mA to 50mA; VBAT = 3.6V; VLDO4 = 2.5V; CLDO4 = 4.7µF) Time (200µs/div) LDO4 Output Voltage (bottom) (V) LDO4 Output Current (top) (A) 2.46 2.48 2.50 2.52 100 150 Line Regulation (VLDO4 = 2.5V) VBAT Voltage (V) Output Voltage Error (%) -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 IOUT = 0.1mA IOUT = 1mA IOUT = 10mA IOUT = 100mA Output Voltage Error vs. Temperature (VBAT = 3.6V; VLDO4 = 2.5V) Temperature (°C) LDO4 Output Voltage Error (%) -250-502 55 07 5 100 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 IOUT = 0.1mA IOUT = 1mA IOUT = 10mA IOUT = 100mA Load Regulation (VBAT = 3.6V; VLDO4 = 2.5V) Output Current (mA) LDO4 Output Voltage Error (%) 11 00.1 100 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−LDO4 (continued) Soft Start (VBAT = 3.6V; VLDO4 = 2.5V; ILDO4 = 50mA) Time (100µs/div) Enable Voltage (top) (V) LDO4 Output Voltage (middle) (V) LDO4 Output Current (bottom) (mA) 100

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−LDO5 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VLDO5 = 3.3V; ILDO5 = 50mA; rising) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) LDO5 Output Voltage (bottom) (V) 3.1 3.2 3.3 3.4 3.5 System Line Transient Response (VIN = 3.5V to 5V; VBAT = 3.6V; VLDO5 = 3.3V; ILDO5 = 50mA; falling) Time (200µs/div) Sysout Voltage (top) (V) VBAT Voltage (middle) (V) LDO5 Output Voltage (bottom) (V) 3.1 3.2 3.3 3.4 3.5 Load Transient Response (ILDO5 = 5mA to 50mA; VBAT = 3.9V; CLDO5 = 4.7µF) Time (200µs/div) LDO5 Output Voltage (bottom) (V) LDO5 Output Current (top) (A) 3.26 3.28 3.30 3.32 3.34 100 150 Line Regulation (VLDO5 = 3.3V) VBAT Voltage (V) LDO5 Output Accuracy (%) -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 IOUT = 0.1mA IOUT = 1mA IOUT = 10mA IOUT = 100mA Output Voltage Error vs. Temperature (VBAT = 3.6V; VLDO4 = 3.3V) Temperature (°C) LDO5 Output Voltage Error (%) -250-502 55 07 5 100 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 IOUT = 0.1mA IOUT = 1mA IOUT = 10mA IOUT = 100mA Load Regulation (VBAT = 3.6V; VLDO5 = 3.3V) Output Current (mA) LDO5 Output Voltage Error (%) 11 00.1 100 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics−LDO5 (continued) Soft Start (VBAT = 3.6V; VLDO5 = 3.3V; ILDO5 = 50mA) Time (100µs/div) Enable Voltage (top) (V) LDO5 Output Voltage (middle) (V) LDO5 Output Current (bottom) (A) 0.00 0.05 0.10

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Functional Description The AAT3608 is a complete power management solution. It seamlessly integrates a battery charger with two step- down converters and five low-dropout regulators to pro- vide power from either an external power source or a single-cell Lithium Ion/Polymer battery. Internal load switches allow the converters to operate from the best available power source. If only the battery is available, then the voltage convert- ers are powered directly from the battery through a 100 mΩ load switch (BAT to SYSOUT). During this condition, the charger is put into sleep mode and draws less than 1µA quiescent current. If the system is connected to a wall adapter, then the voltage converters are powered directly from the adapter through a 200mΩ load-switch (PWR_IN to SYSOUT) and the battery is disconnected from the voltage converter inputs. This allows the sys - tem to operate regardless of the state of the battery. It can even operate with no battery. System Output (SYSOUT) Intelligent control of the integrated load switches is managed by the switch control circuitry. If the voltage across PWR_IN and GND pin is above the UVLO typical threshold voltage of 4.5, then the switch control will automatically short the load switch connecting PWR_IN to SYSOUT. Additionally, the charging switch will be enabled and switch connecting BAT and SYSOUT will be turned off. The location of the two switches and the bat- tery charging switch allows the step-down converter and LDO to always have the best available source of power. Furthermore, AAT3806 control logic allows the voltage converters to operate with no battery, or with a battery voltage below the trickle charge threshold. Functional Block Diagram Li-Ion Linear Charger Control Buck1 Reset Thermal Shutdown Enable Control and I2C Logic LDO1 3.3V/3.0V/2.8V (S1 & S2 bits) 300mA max LDO2 80mA max LDO3 80mA max LDO4 50mA max INLDO LX1 FB1 PGND1

1 Cell Li-Ion

PWR_HOLD EXT_ON PWR_ON Buck1 OK LX2 FB2 PGND2 RESET GND INBUCK Buck2 INBUCK LDO2 LDO3 LDO4 LDO1 LDO5 50mA max LDO5 INT CT ISETA BAT LBO LBI Load Switch SYSOUT BAT STAT To INBUCK, INLDO PWR_EN TS 1.0V BAT PBSTAS BUCK1 320ms Debounce 320ms Debounce S1 S2 USBSEL BUCK1 800mA max BUCK2 FB2 is I2C adj. from 0.5V to 0.7V 800mA max SYSOUT PWR_ID PWR_IN 38,39 17 19 18 6,9 2428,2935,36 Charge Switch LBO 0.6V to 5.5V Output is I2C adj. from 1.0V to 1.4V 1.2V (default ) 2.5V (default ) 3.3V (default ) 0.6V (default ) 1.2V (fixed)

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Battery Charging Flowchart Power on Reset Power Input Voltage VIN > VUVLO Fault Conditions Monitoring OV, OT, TS < VTS1 TS > VTS2 Preconditioning Trickle Charge VBAT < VMIN Constant Current VBAT < VBAT_EOC Constant Voltage IBAT > ITERM No No Yes No Charge Completed Charge Timer Control No Recharge Test VBAT < VRCH Yes No Shut Down Yes Enable YesNo Device Thermal Loop Monitor TJ >1 15 C Thermal Loop Current Reduction in ADP Charging Mode Thermal Loop Current Reduction in C.C. Mode No Enable Yes Expired No Yes Yes Yes

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Buck Regulators The AAT3608 step-down converters are peak current mode PWM converters operating at 1.5MHz frequency. The input voltage range is 2.7V to 5.5V. The converters provide internal compensation. Power devices are sized for 800mA output current while maintaining over 85% efficiency at full load. Peak efficiency is above 90%. Light load efficiency is maintained at greater than 80% down to 85% of full load current. Soft start limits the current surge seen at the input and eliminates output voltage overshoot. The input pin, INBUCK (Pin 24) must be connected to the SYSOUT output pin. The Buck1 output voltage is adjustable from 0.6V to 5.5V and is programmed through an external resistor divider. Buck2 output default value is set by external resistor feedback and then the feedback voltage can be dynamically adjusted via I2C in 12.5mV increments from 0.5V to 0.7V. For overload conditions, the peak input current is limit - ed. Also, thermal protection completely disables switch- ing if internal dissipation becomes excessive, thus pro - tecting the device from damage. The junction over- temperature threshold is 140°C with 15°C of hysteresis. Under-voltage lockout (UVLO) guarantees sufficient V IN bias and proper operation of all internal circuits prior to activation. The current through the P-channel MOSFET (high side) is sensed for current loop control, as well as short circuit and overload protection. A fixed slope compensation signal is added to the sensed current to maintain stabil- ity for duty cycles greater than 50%. The peak current mode loop appears as a voltage-programmed current source in parallel with the output capacitor. The output of the voltage error amplifier programs the current mode loop for the necessary peak switch current to force a constant output voltage for all load and line conditions. Internal loop compensation terminates the transconduc- tance voltage error amplifier output. The reference volt- age is internally set to program the converter output voltage greater than or equal to 0.6V. For conditions where the input voltage drops to the out- put voltage level, the converter duty cycle increases to 100%. As the converter approaches the 100% duty cycle, the minimum off-time initially forces the high side on-time to exceed the 1.5MHz clock cycle and reduces the effective switching frequency. Once the input drops below the level where the converter can regulate the output, the high side P-channel MOSFET is enabled con- tinuously for 100% duty cycle. At 100% duty cycle the output voltage tracks the input voltage minus the I*R drop of the high side P-channel MOSFET. For overload conditions, the peak input current is limit - ed. The bucks use a cycle-by-cycle current limit to pro - tect itself and the load from an external fault condition. Thermal protection completely disables switching when internal dissipation becomes excessive. The junction over-temperature threshold is 140°C with 15°C of hys - teresis. Once an over-temperature or over-current fault conditions is removed, the output voltage automatically recovers. Low-Dropout Regulators The advanced circuit design of the linear regulators has been specifically optimized for very fast start-up and shutdown timing. These proprietary LDOs are tailored for superior transient response characteristics. These traits are particularly important for applications which require fast power supply timing. The high-speed turn-on capability is enabled through the implementation of a fast start control circuit, which accelerates the power up behavior of fundamental con - trol and feedback circuits within the LDO regulator. For fast turn-off time response is achieved by an active out- put pull down circuit, which is enabled when the LDO regulator is placed in the shutdown mode. This active fast shutdown circuit has no adverse effect on normal device operation. There are two LDO input pins, INLDO (pins 6 and 9), which must be connected to the SYSOUT output pin.The LDO1 output voltage is selectable using pins S1 and S2 as shown in Table 1. LDO2 is fixed at 1.2V, LDO4 is fixed at 2.5V and LDO5 is fixed at 3.3V. LDO3 output default value is 1.2V and then can be dynamically adjusted via I2C in 25mV increments from 1.0V to 1.4V. S1 S2 LDO1 0 0 3.0V 0 1 3.3V 1 0 2.8V 1 1 Reserved Table 1: LDO1 Output Voltages.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Controlling the System Outputs The AAT3608 has a specific startup and shutdown condi- tions depending on its mode of operation. Shutdown Mode “Shutdown Mode” is defined as the mode where the entire PMU (Power Management Unit) is shut down. This is a state that normally happens after all power has been disconnected from PWR_IN and BAT. Typically, after power has been applied and the part has been turned on, it will normally never need to be turned off. For GPS applications, the amount of time required for the SOC to start up from shutdown is prohibitively long, so the only time that it will go into Shutdown Mode (from any other mode) is when PWR_IN is disconnected and the BAT is below the Low-Battery comparator threshold. Normal Mode “Normal Mode” is defined as the mode where all regula - tors are active. Once the part is in Normal Mode, it will typically go into Sleep or Deep-Sleep Mode when trying to save current. SOC Sleep Mode “Sleep Mode” is an SOC-defined mode which simply means that all regulators are shut down except SYSOUT, Buck1, LDO1, and LDO3. To get into this mode from Normal, the SOC will pull the PWR_EN pin low to turn off LDO2, LDO4, and LDO5. Buck2 can also be controlled by PWR_EN only if the SOC masks PWR_EN through I 2C. From a PMU point of view, it is no different from Normal Mode except for the regulators that have been switched off by pulling PWR_EN low. Deep Sleep Mode “Deep Sleep Mode” is both an SOC and PMU-defined mode where all regulators have been turned off except for SYSOUT and Buck1. Data is backed up by the SOC and Buck1 stays alive to maintain the memory. LDO4 and LDO5 would be turned off separately by I2C, but the DS_RDY and PWR_DS I 2C bits are used to get into and out of Deep Sleep Mode. See the flowchart diagrams for more detail. PWR_ID Pin The PWR_ID pin is an input logic pin which determines the current limits and fast charge currents that will be used by PMU. PWR_ID settings are listed in Table 2. Timing Sequences The AAT3608 has a specific startup sequence when the device is activated. See the timing diagrams in Figures 2 through 7. RESET The RESET pin is an open drain active low output signal for system reset. Connect a pull-up resistor from the RESET pin to SYSOUT pin with a recommended resis - tance value of 100kΩ. After Buck2 and LDO2 reach their target nominal output voltage, a delay of 200ms exists before RESET goes high; refer to the timing diagram in Figure 2. PWR_ID Pin USBSEL Pin PWR_IN – SYSOUT Switch Current Limit Battery Fast Charge Current L L 100mA (typical) 100mA (typical) L H 500mA (typical) 500mA (typical) H X Up to 1.2A (typical) Set by the resistor at the ISETA pin. Table 2: PWR_ID Settings.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 I2C Serial Interface and Programmability Serial Interface Many of the features of the AAT3608 can be controlled via the I 2C serial interface. The I 2C serial interface is a widely used interface where it requires a master to initi- ate all the communications with the slave devices. The I2C protocol consists of 2 active wires, SDA (serial data line) and SCL (serial clock line). Both wires are open drain and require an external pull up resistor to V CC (SYSOUT may be used as V CC). The SDA pin serves I/O function, and the SCL pin controls and references the I2C bus. I2C protocol is a bidirectional bus which allows both read and write actions to take place. The timing diagram in Figure 8 depicts the transmission protocol. START and STOP Conditions START and STOP conditions are always generated by the master. Prior to initiating a START condition, both the SDA and SCL pin are idle mode (idle mode is when there is no activity on the bus and SDA and SCL are pulled to VCC via external resistor). As depicted in Figure 9, a START condi- tion is defined to be when the master pulls the SDA line low and after a short period pulls the SCL line low. A START condition acts as a signal to all ICs that something is about to be transmitted on the BUS. A STOP condition, also shown in Figure 9, is when the master releases the bus and SCL changes from low to high followed by SDA low to high transition. The master does not issue an ACKNOWLEDGE and releases the SCL and SDA pins. Transferring Data Every byte on the bus must be 8 bits long. A byte is always sent with the most significant bit first (see Figure 8). MSB LSB R/W Figure 8: Bit Order. Acknowledge Bit The acknowledge bit is the ninth bit of data. It is used to send back a confirmation to the master that the data has been received properly. For acknowledge to take place, the MASTER must first release the SDA line, then the SLAVE will pull the data line low as shown in Figure 9. The address is embedded in the first seven bits of the byte. The eighth bit is reserved for the direction of the information flow for the next byte of information. For the AAT3608, this bit must be set to “0” when writing and “1” when reading. The full 8-bit address including the R/W bit is 0x9C (hex) or 10011100 in binary for writing and 0x9D(hex) or 10011101 in binary for reading. I2C Write Code After sending the chip address, the master should send an 8-bit data stream (“2ND Word”). The “2ND Word” can consist of any one of the four sets of data listed in Table 3. The “3 RD Word” should be entered into the I 2C only if (Bit7,Bit6,Bit5) = (0,0,0) in the “2 ND Word”. In this case, the bits (G2,G1,G0) are used to set the bit assignments as shown in Tables 4 and 5.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 A6 A5 A4 A3 A2 A1 0 0 0 0 x x G2 G1 G0 0 0 1 D14 0 1 0 0 1 1 D13 D12 D11 D10 D24 D23 D22 D21 D20 D34 D33 D32 D31 D30 0 1 E15 E14 E13 E12 E11 E10 1 0 E25 E24 E23 E22 E21 E20 1 1 E35 E34 E33 E32 E31 E30 0 1 F15 F14 F13 F12 F11 F10 G2:0=3'b000 G2:0=3'b010 I2C Address2 nd Word 3rd Word START STOP STOP STOP STOP SCL SDA A6 A5 A0 WA Write command from the master. Acknowledge from the slave. R/W START STOP Dx4 Dx0 STOP A Acknowledge from the slave. START command from the master. STOP command from the master. SCL SDA D1<4:0> D2<4:0> D3<4:0> E1<5:0> E2<5:0> E3<5:0> F1<5:0> I2C Controller 01 or 10 or 11 72819 A<6:0> Data Data Data Data ACKA CK ACK Figure 9: I2C Protocol. Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 0 0 0 0 0 G2 G1 G0 0 0 1 ENLDO5 ENLDO4 DS_RDY PWR_DS Reserved 0 1 0 LDO51 LDO50 LDO41 LDO40 ENCHG 0 1 1 BUCK24 and LDO34 BUCK23 and LDO33 BUCK22 and LDO32 BUCK21 and LDO31 BUCK20 and LDO30 Table 3: I2C “2nd Word” Bit Assignments.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 0 1 ENLDO3 ENLDO2 ENLDO1 ENBUCK1 ENBUCK2 PWR_EN Mask 1 0 PWR_IN IN Mask PWR_IN OUT Mask Reserved LBO Mask TIME OUT Mask CHG DONE Mask Table 4: I2C “3rd Word” Bit Assignments for (G2,G1,G0) = (0,0,0) Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 0 1 Test Modes Table 5: I2C “3rd Word” Bit Assignments for (G2,G1,G0) = (0,1,0). BUCK24 LDO34 BUCK23 LDO33 BUCK22 LDO32 BUCK21 LDO31 BUCK20 LDO30 LDO3 Output Voltage BUCK2 FB Voltage 0 0 0 0 0 1.000V 0.5000V 0 0 0 0 1 1.025V 0.5125V 0 0 0 1 0 1.050V 0.5250V 0 0 0 1 1 1.075V 0.5375V 0 0 1 0 0 1.100V 0.5500V 0 0 1 0 1 1.125V 0.5625V 0 0 1 1 0 1.150V 0.5750V 0 0 1 1 1 1.175V 0.5875V 0 1 0 0 0 1.200V (Default) 0.6000V (Default) 0 1 0 0 1 1.225V 0.6125V 0 1 0 1 0 1.250V 0.6250V 0 1 0 1 1 1.275V 0.6375V 0 1 1 0 0 1.300V 0.6500V 0 1 1 0 1 1.325V 0.6625V 0 1 1 1 1 1.350V 0.6750V 0 1 1 1 1 1.375V 0.6875V 1 X X X X 1.400V 0.7000V Table 6: Buck2 and LDO3 Output Voltage. LDO41 LDO40 LDO4 Output Voltage LDO51 LDO50 LDO5 Output Voltage 0 0 1.8V 0 0 1.2V 0 1 2.5V (Default) 0 1 1.5V 1 0 2.85V 1 0 3.0V 1 1 3.3V 1 1 3.3V (Default) Table 7: LDO4 Output Voltage. Table 8: LDO5 Output Voltage.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Interrupt (Read from I2C) A single byte is used when reading I 2C data from the AAT3608. The R/W address should be set to 1 so that complete address of the chip would be 0x9D or 10011101 in binary. The INT (interrupt) pin is an open drain output which pulls low when there is an assertion in any one of the status bits (except the DS_RDY and PWR_DS bits). When a Read from the I2C is initiated AND completed by the SOC, the INT pin is released and the voltage will go high through the external pull-up resistor. ENCHG Description DS_RDY Description

0 Turn off Battery Charger 0 (Default)

1 Turn on Battery Charger (Default) 1 Deep Sleep Recognition Flag

ENBUCK1 Description PWR_DS Description

0 Turn off Buck1 0 (Default)

1 Turn on Buck1 (Default) 1 Force PMU to go into Deep Sleep Mode

ENBUCK2 Description PWR_EN Mask Description

0 Turn OFF Buck2 0 No Masking

1 Turn ON Buck2 (Default) 1 Mask the PWR_EN pin ability to control BUCK2 (Default)

ENLDO1 Description PWR_IN IN Mask Description

0 Turn OFF LDO1 0 No Masking

1 Turn ON LDO1 (Default) 1 Prevent an interrupt from being generated if the

PWR_IN IN bit has been asserted (Default) ENLDO2 Description PWR_IN OUT Mask Description

0 Turn OFF LDO2 0 No Masking

1 Turn ON LDO2 only if PWR_EN pin is

High (Default) 1 Prevent an interrupt from being generated if the PWR_IN OUT bit has been asserted (Default) ENLDO3 Description LBO Mask Description

0 Turn OFF LDO3 0 No Masking

1 Turn ON LDO3 (Default) 1 Prevent an interrupt from being generated if the LBO

comparator has been asserted (Default) ENLDO4 Description TIMEOUT Mask Description

0 Turn OFF LDO4 0 No Masking

1 Turn ON LDO4 (Default) 1 Prevents an interrupt from being generated if the

TIMEOUT bit has been asserted (Default) ENLDO5 Description CHG_DONE Mask Description

0 Turn OFF LDO5 0 No Masking

1 Turn ON LDO5 (Default) 1 Prevent an interrupt from being generated if the charger

has reached End-of-Charge (Default) Table 9: Enable Settings. Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 PWR_IN IN PWR_IN OUT Reserved LBO TIME OUT CHG_DONE DS_RDY PWR_DS Table 10: I2C Read Table.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 PWR_IN IN Bit Description Interrupt Signal Produced?

0 Default Only if PWR_IN IN Mask

bit is not set1 If VPWR_IN > UVLO threshold, this bit will be set PWR_IN OUT Bit Description Interrupt Signal Produced?

0 Default Only if PWR_IN OUT

Mask bit is not set1 If VPWR_IN < UVLO threshold, this bit will be set TIMEOUT Bit Description Interrupt Signal Produced?

0 Default Only if TIMEOUT Mask

bit is not set1 If the charger watchdog timer has reached Timeout, this bit will be set. LBO Bit Description Interrupt Signal Produced?

0 Default Only if LBO Mask bit is

not set1 If Low-Battery comparator is tripped then this bit will be set. CHG DONE Bit Description Interrupt Signal Produced?

0 Default Only if CHG_DONE

Mask bit is not set1 If the Charger has reached End-Of-Charge (EOC), this bit will be set DS_RDY Bit Description Interrupt Signal Produced?

0 Default No INT signal1 Same as the DS_RDY bit described in the "I2C Write" section of this datasheet

PWR_DS Bit Description Interrupt Signal Produced?

0 Default No INT signal1 Same as the PWR_DS bit described in the "I2C Write" section of this datasheet

Table 11: Status Bit Descriptions.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012

Application Information

The two bucks are high performance 800mA 1.5MHz monolithic step-down converters. They have been designed with the goal of minimizing external compo - nent size and optimizing efficiency over the complete load range. Apart from the small bypass input capacitor, only a small L-C filter is required at the output. Both bucks can be programmed with external feedback resistors to any voltage, ranging from 0.6V to the input voltage in default feedback voltage condition. At dropout, the step down converters duty cycle increas- es to 100% and the output voltage tracks the input volt- age minus the R DSON drop of the P-channel high-side MOSFET. Output Voltage Resistor Selection Resistors R2 through R5 in Figure 10 program the output to regulate at a voltage higher than 0.6V in default mode. The feedback voltage of Buck2 can have a wider range and can be adjusted down to 0.5V through I2C. To limit the bias current required for the external feedback resistor string while maintaining good noise immunity, a suggested value for R3 and R5 is 59kΩ to provide a bias current of 10uA with a feedback voltage of 0.6V. Although a larger value will further reduce quiescent current, it will also increase the impedance of the feed - back node, making it more sensitive to external noise and interference. Table 12 summarizes the resistor val - ues for various output voltages with R3 and R5 set to either 59kΩ for good noise immunity or 100kΩ for reduced no load input current. VOUT (V) R3 and R5 = 59kΩ R2 and R4 (kΩ) R3 and R5 = 100kΩ R2 and R4 (kΩ) 0.8 19.6 33.2 0.9 29.4 49.9 1 39.2 66.5 1.1 49.9 82.5 1.2 59 100 1.3 68.1 118 1.4 78.7 133 1.5 88.7 150 1.8 118 200 1.85 124 210 2 137 232 2.5 187 316 3.3 267 453 Table 12: Feedback Resistors (Feedback Voltage = 0.6V). Input Capacitor (Bucks) All input capacitors should be located as physically close to the power pin (INBUCK) and power ground pins (PGND1 and 2). Ceramic capacitors are recommended for their higher current operation and small profile. Also, ceramic capacitors are inherently capable to withstand input current surges from low impedance sources such as batteries in portable devices over tantalum capacitors. Typically, 10V or 16V rated capacitors are required. The following are the typical recommended capacitance values: Two 10μF capacitors for INBUCK One 10μF capacitor for INLDO One 10μF capacitor for SYSOUT One 10μF capacitor for PWR_IN One 10μF capacitor for BAT Output Capacitor (Bucks) For proper load voltage regulation and operational stabil- ity, a capacitor is required on the output of each buck. The output capacitor connection to the ground pin should be made as directly as practically possible for maximum device performance. Since the bucks have been designed to function with very low ESR capacitors, a 4.7μF ceramic capacitor is recommended for best per- formance. Inductor Selection The two bucks use peak current mode control with slope compensation to maintain stability for duty cycles great- er than 50%. The output inductor value must be select - ed so the inductor current down slope meets the internal slope compensation requirements. The internal slope compensation is 1A/μs. The inductor should be set equal to the output voltage numeric value in micro henries (μH). This guarantees that there is sufficient internal slope compensation. Inductor manufacturer’s specifications list both the inductor DC current rating, which is a thermal limitation, and the peak current rating, which is determined by the saturation characteristics. The inductor should not show any appreciable saturation under normal load condi - tions. Some inductors may meet the peak and average current ratings yet result in excessive losses due to a high DCR. Always consider the losses associated with the DCR and its effect on the total converter efficiency when selecting an inductor.

performance, ceramic capacitors are recommended. Table 12. When laying out the PC board, the following

The exposed pad (EP) must be reliably soldered to
The power traces, including GND traces, the LX

pads when routing between layers.

The input capacitors should be connected as close as

PGND2 to get good power filtering.

Keep the switching node LX away from the sensitive

buck feedback nodes, FB1 and FB2.

The feedback trace for the bucks should be separate

rent load trace will degrade DC load regulation.

The output capacitors and inductors should be con -

any signal lines under the inductor.

The resistance of the trace from the load return to

PGND1 and PGND2 should be kept to a minimum. signal ground and the power ground.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 J2J1 SYSOUT SYSOUT J10 J11 J12 LDO1LDO1 LDO2 LDO3 LDO4 LDO5 LDO2 LDO3 LDO4 LDO5 C13 4.7µF C14 4.7µF C12 0.1µF 0.1µF 10µF 10µF 100pF C15 4.7µF C16 4.7µF C17 4.7µF C10 4.7µF 4.7µF RESETRESET J27 Buck 2 Buck 1 BUCK2 BUCK1 P35,36 xRESET RESET L2 2.2µH L1 2.2µH PWR_ID USBSEL STAT STAT PBSTAS PBSTAS VBAT VBAT VBAT VBAT BATBAT VIN VIN VIN PWR_ON SW1 PWR_ON SCL SYSOUT SYSOUTSYSOUTSYSOUT SYSOUT VBAT R17 10K R12 10K R21 100K 100K 100K 316K 100K R20 R15 R16 R14 100K 1.24K R19 1.5K R13 10K R18 10K LBI LBI LBO LBO 1M 1M 1M 1M 1M R7 R8 INT INT PWR_EN TB1 TB-2 TB2 TB-2 SW DIP-6 SYSOUT LED2 R9 R10 R11 J17 J18 J19 J13 J21J20 J16 J15 J14 TB4 TB-2 TB3 TB-2 FB = 0.6V 3-PIN_JUMPER SYSOUT VBAT VBAT TS TS STAT1 ISETA2 TS3 TC4 17 26 22 LDO2 5 LDO3 7 LDO1 8 INLDO INLDO LDO4 10 LDO5 11 PBSTAS12 INT14 LBO15 LBI16 S218 S119 PWR_EN20 INBUCK 24 LX1 25 FB1 LX2 FB2 SDA30 SCL31 PWR_HOLD32 PWR_ON33 EXT_ON34 35SYSOUT SYSOUT 39 38 29 28 6PWR_ID PWR_INPWR_IN37 USBSEL STAT TS PBSTAS INT LBO LBI PWR_EN SDA SCL PWR_HOLD PWR_ON EXT_ONEXT_ON PWR_ID USBSEL 40 AAT3608 3-PIN_JUMPER BUCK1 PWR_HOLD P24P24 10µF 10µF 10µF 10µF P6,9 Star Ground is the Exposed Pad: Connect all Ground Planes at the Exposed Pad C19 100pF C18 100pF 1 2 3 4 5 6 7 8 9 10 Header 5X2 SDA VIO PGND PGND PGND PGND PGNDPGND PGND GND GNDG ND GND PGND PGND PGND PGND GNDP GND1 PGND1 PGND2 PGND2 PGND PGND PGNDPGND1PGND2PGND GND GND PGND2 PGND1 PGND PGND PGND PGND J23 J22 J25J 24 J28J 29 LX2 J26 LX1 Figure 10: AAT3608 Evaluation Board Schematic.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Figure 14: AAT3608 Evaluation Board Figure 15: AAT3608 Evaluation Board Mid Layer 2 (SYSOUT). Bottom Layer. Description Value Quantity Footprint U1 Battery Charger PMU 1 TQFN55-40L J1, J2, J3, J4, J5, J6, J8, J9, J10, J11, J12, 13, J14,J15, J16, J18, J20, J21, J22, J23, J24, J25, J26, J27, J28, J29 Test Point 26 TP TB1, TB2, TB3, TB4 Terminal Block Connector 2 Positions - DigiKey 277-1273-ND 4 TBLOK2 SW1 Switch Tact, SPST, 5mm - C&K Components PTS645TL50 LFS 1 SW-2 P1 Header, 5-Pin, Dual row 1 HDR2X5 J7, J17, J19 1X3 Header 3 HDR1X3 S1 DIP Switch, 6 Position, SPST 1 DIP-12/SW L1, L2 Inductor 2.2µH 2 CDRH4D16 D1 Typical red, green, yellow, amber GaAs LED 1 1206LED - duplicate C2, C3, C4, C5,C6,C7 Ceramic Capacitor 10µF 6 0805 C8 Ceramic Capacitor 4.7µF 1 0805 C1, C12 Ceramic Capacitor 0.1µF 2 0603 C10, C13, C14, C15, C16, C17 Ceramic Capacitor 4.7µF 6 0603 C9, C18, C19 Ceramic Capacitor 100pF 3 0603 R12, R13, R17, R18 Resistor 10K 4 0603 R15 Resistor 2M 1 0603 R19 Resistor 1.5K 1 0603 R2 Resistor 316K 1 0603 R3, R4, R5, R14, R21 Resistor 100K 5 0603 R6 Resistor 1.24K 1 0603 R7, R8, R9, R10, R11, R16, R20 Resistor 1M 7 0603 Table 12: AAT3608 Evaluation Board Bill of Materials (BOM).

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 1. XYY = assembly and date code. 2. Sample stock is generally held on part numbers listed in BOLD. 3. Available exclusively outside of the United States and its territories. 4. The leadless package family, which includes QFN, TQFN, DFN, TDFN and STDFN, has exposed copper (unplated) at the end of the lead terminals due to the manufacturing process. A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection.

Ordering Information

Package Marking1 Part Number (Tape and Reel)2, 3 TQFN55-40 C8XYY AAT3608IIC-1-T1 Skyworks Green™ products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Deﬁnition of Green™, document number SQ04-0074.

Package Information

5.000 ± 0.050 5.000 ± 0.050 Pin 1 Dot by Marking Pin 1 Identification Chamfer 0.300 x 45° 3.600 ± 0.050 3.600 ± 0.050 0.450 ± 0.050 0.380 ± 0.050 0.200 ± 0.0500.400 BSC 0.750 ± 0.050 0.000 + 0.100 - 0.000

0.203 REF

All dimensions in millimeters.

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202214A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Copyright © 2012 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Sky - works may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes. No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided here- under, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale. THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, IN - CLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or en- vironmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of pub- lished parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters. Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference.

Selected Specification

Skyworks Solutions Inc. AAT3608IIC-1-T1 overview.

Overview

AAT3608IIC-1-T1 is listed in the Power Management category. Available datasheets include documents from Skyworks Solutions Inc.. DigiCamel provides a local PDF and searchable HTML technical text for online reference.

Summary

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface July 26, 2012

Description

Compact Seven-Channel Regulator with Li+/Polymer Linear Battery Charger and I2C Interface July 26, 2012

Source title AAT3608IIC-1-T1 Datasheet(PDF) - Skyworks Solutions Inc.

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