AAT3603A Datasheet PDF & Specifications

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AAT3603A SKYWORKS

Document overview

Manufacturer or author: Provided By digicamel.com
PDF pages: 36

Technical content

Features

Voltage Regulator VIN Range: 4.5V to 6V
Low Cost Power Integr ation
Low Standby Current ▪ 170µA (typ) w/ Buck, LDO1, and LDO2 Active, No Load
One Step-Down Buck Converter ▪ 1.8V, 300mA Output ▪ 1.5MHz Switching Frequen cy ▪ Fast Turn-On Time (100µs typ)
Three LDOs Programmable with I2C ▪ LDO1: 3.3V, 300mA ▪ LDO4: 3.3V, 150mA ▪ LDO5: 3.3V, 150mA ▪ PSRR: 60dB@10kHz ▪ Noise: 50µVrms for LDO3, LDO4, and LDO5
One Battery Charger ▪ Digitized Thermal Regulation ▪ Charge Current Programming up to 1.4A ▪ Charge Current Termination Programming ▪ Automatic Trickle Charge for Battery Preconditioning (2.8V Cutoff)
Adapter OK (ADPP) and Reset (RESET) Timer Outputs
Separate Enable Pins for Supply Outputs
Over-Current Protection
Over-Temperature Protection
5x5mm TQFN55-36 Package

Applications

GPS and PND
Digital Cameras
Handheld Instruments
PDAs and Handheld Computers
Portable Media Players DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Application LDO2 Enable LDO1 Enable LDO4 LDO5 Enable Enable Enable LDO3 Enable Step-down BUCK CHGIN UVLO BAT PGND PVIN LX OUTBUCK OUT1OUT2 VINVIN VIN VIN VIN VIN OUT3OUT4OUT5 REF AVIN2 EN5 EN4 EN3 EN _TEST EN _HOL D RESET Ref Ref Ref Ref Ref Ref CNOISE AGND AVIN1 VIN I 2 C and Enable Control EN_KEY ON_KEY SDA SCL ISET Ref Charger ControlSTAT ADPP ENBAT TS CT EN2 10µF 5V from AC Adapter or USB Port 22µF 1 cell Li+ battery To BAT To BAT To BAT 10µF 0. 01µF 4.7µ F 3.3µ H 1.8V 300m A 4.7µ F 4. 7µ F 10µf 10µf 22 µF 1.2V 150m A 1. 24k10k NTC For BAT Temp sense 0.1µ F 100k To OUT1 100k To BAT 100kTo BAT 100kTo BAT µC 3. 3V 300mA 3.3V 150mA 1.2V 150m A 3.3V 150m A DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Pin Descriptions Pin # Symbol Function 1 EN_TEST Similar to EN_HOLD but intended for use with the automatic tester or as a hands free enable input pin indi- cating hands free phone operation with a headset. It is also internally pulled to GND when floating. 2 EN_HOLD Enable for the system. EN_HOLD must be held high by the processor to maintain core power. It is internally pulled to GND when floating.

3 EN_KEY

Enable for the system. An internal pull-up resistor keeps the pin pulled up to an internal supply to keep the system off when there is no CHGIN input. Connect a normally-open pushbutton switch from this pin to GND. There is an internal 300ms debounce delay circuit to filter noise. ON_KEY Buffered logic output of the EN_KEY pin with a logic signal from ground to OUT1. 5 EN2 Enable for LDO2 (Internally pulled low when floating). 6 EN3 Enable for LDO3 (Internally pulled low when floating). 7 EN4 Enable for LDO4 (Internally pulled low when floating). 8 EN5 Enable for LDO5 (Internally pulled low when floating). 9 OUT5 Output for LDO5 (when shut down, pulled down with 10kW). 10 OUT4 Output for LDO4 (when shut down, pulled down with 10kW). 11 AVIN2 Analog voltage input. Must be tied to BAT on the PCB. 12 OUT3 Output for LDO3. 13 OUT2 Output for LDO2. 14 AVIN1 Analog voltage input. Must be tied to BAT on the PCB.

15 OUT1 Output for LDO1

16 AGND Signal ground

17 CNOISE Noise Bypass pin for the internal reference voltage. Connect a 0.01µF capacitor to AGND.

18 RESET

RESET is the open drain output of a 65ms reset timer. RESET is released after the 65ms timer times out. RESET is active low and is held low during shutdown. RESET should be tied to a 10K or larger pullup to OUTBUCK.

19 ADPP

Open Drain output. Will pull low when VCHGIN > 4.5V. When this happens, depending on the status of the USE_USB pin, the charge current will be reset to the default values (see Battery Charger and I2C Serial Interface and Programmability section) 20 LX Step-down Buck converter switching node. Connect an inductor between this pin and the output. 21 PGND Power Ground for step-down Buck converter. 22 PVIN Input power for step-down Buck converter. Must be tied to BAT. 23 OUTBUCK Feedback input for the step-down Buck converter. 24, 25 N/C No Connect; do not connect anything to these pins. 26, 27 BAT Connect to a Lithium Ion battery. 28, 29 CHGIN Power input from either external adapter or USB port.

30 ENBAT Active low enable for the battery charger (Internally pulled low when floating)

31 TS Battery Temperature Sense pin with 75µA output current. Connect the battery’s NTC resistor to this pin and ground. 32 ISET Charge current programming input pin (Tie a 1k to GND for maximum fast charge current). Can be used to monitor charge current. 33 CT Charger Safety Timer Pin. A 0.1µF ceramic capacitor should be connected between this pin and GND. Con- nect directly to GND to disable the timer function. 34 STAT Battery charging status pin output. Connected internally between GND and OUT1. Used to monitor battery charge status.

35 SDA I

2C serial data pin, open drain; requires a pullup resistor. 36 SCL I2C serial clock pin, open drain; requires a pullup resistor. EP EP The exposed thermal pad (EP) must be connected to board ground plane and Pins 16 and 21. The ground plane should include a large exposed copper pad under the package for thermal dissipation (see package outline). DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Pin Configuration TQFN55-36 (Top View) EN _TEST EN_H OL D EN _KEY ON_ KEY EN 2 EN 3 EN 4 EN 5 OUT5 BAT BAT N/C N/C OUTB UCK PVIN PG ND LX ADPP SCL SDA STAT CT ISET TS ENBAT CHGIN CHGIN OUT4 AVIN2 OUT3 OUT2 AVIN1 OUT1 AGND CNOISE RESET 10 11 12 13 14 15 16 17 1 8 36 35 34 33 32 31 30 29 2 8 DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Absolute Maximum Ratings1 TA = 25°C unless otherwise noted. Symbol Description Value Units VIN Input Voltage, CHGIN, BAT -0.3 to 6.5 V Power and logic pins Maximum Rating VIN + 0.3 V TA Operating Temperature Range -40 to 85 °C TS Storage Temperature Range -65 to 150 °C TLEAD Maximum Soldering Temperature (at leads, 10 sec) 300 °C Recommended Operating Conditions2 Symbol Description Value Units θJA Thermal Resistance 25 °C/W PD Maximum Power Dissipation 4 W 1. Stresses abov e 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 Resistanc e was measured with the AAT3603A 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. See Figures 11-14. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Electrical Characteristics1 VIN = 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 CHGIN Input Voltage 4.5 6 V IQ Battery Standby Current Buck, LDO1 + LDO2, no load 170 µA ISHDN Battery Shutdown Current EN_TEST, EN_HOLD, EN2, EN3, EN4, EN5 = GND; EN_KEY and VIN floating 10.0 µA UVLO Under-Voltage Lockout for CHGIN CHGIN rising 4.25 4.5 V CHGIN falling 4.15 V Battery Under-Voltage Lockout BAT rising 2.6 V BAT falling 2.35 V IBAT Leakage Current from BAT Pin VBAT = 4V, VCHGIN = 0V 2 5 µA Startup Timers RESET Reset Timer Initiated when OUT1 = 90% of final value 35 ms Charger Voltage Regulation VBAT_REG Output Charge Voltage Regulation 0°C ≤ TA ≤ +70°C 4.158 4.200 4.242 V VMIN Preconditioning Voltage Threshold (No trickle charge option available) 2.6 2.8 3.0 V VRCH Battery Recharge Voltage Threshold I2C Recharge Code = 00 (default) 4.00 V I2C Recharge Code = 01 4.05 V I2C Recharge Code = 10 4.10 V I2C Recharge Code = 11 4.15 V Charger Current Regulation ICH_CC Constant-Current Mode Charge Current RISET = 1.24k (for 0.8A), I2C ISET code = 100, VBAT = 3.6V, VCHGIN = 5.0V 864 960 1056 mA I2C ISET Code = 000, VBAT = 3.6V 85 100 115 KI_SET Charge Current Set Factor: ICH_CC/IISET Constant Current Mode, VBAT = 3.6V 800 mA ICH_PRE Preconditioning Charge Current RISET = 1.24kW 12 % ICH_CC I2C ISET Code = 000 50 mA ICH_TERM Charge Termination Threshold Current I2C Term Code = 00 (default) 5 ICH_CC I2C Term Code = 01 10 I2C Term Code = 10 15 I2C Term Code = 11 20 Charging Devices RDS(ON) Charging Transistor ON Resistance VIN = 5V 0.6 0.9 W Logic Control / Protection VEN_HOLD, VEN_KEY, VEN_TEST Input High Threshold 1.4 V Input Low Threshold 0.4 V VADPP Output Low Voltage Pin Sinks 4mA 0.4 V IADPP Output Pin Current Sink Capability 8 mA VSTAT Output High Voltage VOUT1 V ISTAT Output Pin Current Source Capability 1.5 mA VOVP Over-Voltage Protection Threshold 4.3 V 1. Specification ov er the –40°C to +85°C operating temperature range is assured by design, characterization and correlation with statistical process controls. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Electrical Characteristics1 VIN = 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 Logic Control / Protection (continued) VOCP Over-Current Protection Threshold 105 %VCS TC Constant Current Mode Time Out CCT = 100nF, VCHGIN = 5V

3 Hours

TK Trickle Charge Time Out TC/8 Hours TV Constant Voltage Mode Time Out 3 Hours ITS Current Source from TS Pin 71 75 79 µA TS1 TS Hot Temperature Fault Falling Threshold 318 331 346 mVHysteresis 25 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 Step-Down Buck Converter VOUTBUCK Output Voltage Accuracy IOUTBUCK = 1mA ~ 300mA; PVIN = 2.7V ~ 4.2V 1.71 1.80 1.89 V ILIMOUTBUCK P-Channel Current Limit 0.8 A RDS(ON)L High Side Switch On-Resistance 0.8 Ω RDS(ON)H Low Side Switch On-Resistance 0.8 Ω FOSC Oscillator Frequency TA = 25°C 1.5 MHz TS Startup Time From Enable to Regulation; COUTBUCK =4.7µF, CNOISE = On 100 µs LDO1 (3.3V) VOUT1 Output Voltage Accuracy AVIN = 3.7V to 4.2V, IOUT1 = 1mA ~ 300mA -3 +3 % IOUT1 Output Current 300 mA ILIM1 Output Current Limit 1000 mA VDO1 Dropout Voltage IOUT1 = 300mA 160 320 mV ∆VOUT1(VOUT1∆VIN1) Line Regulation IOUT1 = 100mA 0.07 %/V ∆VOUT1 Load Regulation IOUT1 = 0.5mA ~ 150mA 40 mV PSRR Power Supply Rejection Ratio IOUT1 = 10mA, COUT1 = 22µF, 100Hz ~ 10KHz 60 dB TS Startup Time From Enable to Regulation; COUT1 = 22µF, CNOISE = On 175 µs 1. Specification ov er the –40°C to +85°C operating temperature range is assured by design, characterization and correlation with statistical process controls. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Electrical Characteristics1 VIN = 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 LDO2, LDO3 (1.2V) VOUT2 Output Voltage Accuracy AVIN = 2.7V to 4.2V, IOUTX = 1mA ~ 150mA -3 +3 % IOUT2 Output Current 150 mA ILIM2 Output Current Limit 1000 mA ∆VOUT2/ (VOUT2∆VIN2) Line Regulation IOUTX = 100mA 0.07 %/V ∆VOUT2 Load Regulation Load: 0.5mA ~ 150mA 14 mV PSRR Power Supply Rejection Ratio IOUTX = 10mA, COUTX = 4.7µF, 10 ~ 10KHz 60 dB Ts Startup Time From Enable to Regulation; COUTX = 4.7µF, CNOISE = On 65 µs LDO4, LDO5 (3.3V) VOUTx Output Voltage Accuracy AVIN = 3.7V to 4.2V, IOUTX = 1mA ~ 150mA -3 +3 % IOUTx Output Current 150 mA ILIMx Output Current Limit 1000 mA VDOx Dropout Voltage IOUTX = 150mA 165 mV ∆VOUTx/ (VOUTx∆VINx) Line Regulation IOUTX = 100mA 0.07 %/V ∆VOUTx Load Regulation IOUTX = 0.5mA ~ 150mA 40 mV PSRR Power Supply Rejection Ratio IOUTX = 10mA, COUTx = 4.7µF, 10 ~ 10KHz 60 dB eN Output Noise Voltage IOUTX = 10mA, Power BW: 10kHz ~ 100KHz 40 µVrms Ts Startup Time From Enable to Regulation; COUTX = 4.7µF, CNOISE = On 65 µs Logic Control VIH Enable Pin Logic High Level For EN2, EN3, EN4 and EN5 1.4 V VIL Enable Pin Logic Low Level 0.4 V Thermal TSD Over Temperature Shutdown Threshold 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 START Condition 0.6 µs TSU_STA Setup Time for Repeat START 0.6 µs TSU_DTA Data Setup Time 100 ns 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 0.4 V VIH Input Threshold High 2.7V ≤ VIN ≤ 5.5V 1.4 - V II Input Current -1.0 1.0 µA VOL Output Logic Low (SDA) IPULLUP = 3mA 0.4 V 1. Specification ov er the –40°C to +85°C operating temperature range is assured by design, characterization and correlation with statistical process controls. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Basic I2C Timing Diagram TSU_STOTSU_STATHD_STA THIGH TLOW TSU_DAT THD_DAT SDA SCL TBUFTHD_STA DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics—Charger Preconditioning Threshold Voltage vs. Temperature Temperature (°C) VMIN (V) 2.790 2.792 2.794 2.796 2.798 2.800 2.802 2.804 2.806 2.808 2.810 -50 -25 02 55 07 5 100 VCHGIN = 6.0V VCHGIN = 5.5V VCHGIN = 5.0V VCHGIN = 4.5V Preconditioning Charge Current vs. Temperature (V BAT = 2.5V, R ISET = 1.24kΩ) Temperature (°C) I CH_PRE (mA) 100 105 110 115 -50- 25 02 55 07 5 100 VCHGIN = 6.0V VCHGIN = 5.5VVCHGIN = 5.0V VCHGIN = 4.5V Recharge Voltage Threshold vs. Temperature (VRCH set to 4.0V) Temperature (°C) VRCH (V) 3.96 3.97 3.98 3.99 4.00 4.01 4.02 4.03 4.04 4.05 4.06 -50 -25 02 55 07 5 100 VCHGIN = 6.0VVCHGIN = 5.5V VCHGIN = 5.0V VCHGIN = 4.5V Output Charge Voltage Regulation vs. Temperature (End of Charge Voltage) Temperature (°C) VBAT_REG (V) 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 4.25 -50 -25 02 55 07 5 100 VCHGIN = 6.0VVCHGIN = 5.5V VCHGIN = 5.0V VCHGIN = 4.5V Charge Termination Threshold Current vs. Temperature Temperature (°C) ICH_TERM (mA) 100 -50 -25 02 55 07 5 100 VCHGIN = 6.0VVCHGIN = 5.5V VCHGIN = 5.0V VCHGIN = 4.5V Charging Current vs. Battery Voltage (RISET = 1.24kΩ) Battery Voltage (V) ICH (mA) 100 200 300 400 500 600 700 800 900 VCHGIN = 6.0V VCHGIN = 5.5V VCHGIN = 5.0V VCHGIN = 4.5V DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics—Charger (continued) Constant Current Mode Charge Current vs. Temperature (VBAT = 3.6V; RISET = 1.24kΩ) Temperature (°C) ICH_CC (mA) 300 400 500 600 700 800 900 -50 -25 02 55 07 5 100 VCHGIN = 6.0V VCHGIN = 5.5V VCHGIN = 5.0V VCHGIN = 4.5V Constant Current Mode Charge Current vs. Input Voltage (R ISET = 1.24kΩ) CHGIN Voltage (V) I CH_CC (mA) 700 720 740 760 780 800 820 840 860 880 900 VBAT = 3.3V VBAT = 3.6VVBAT = 4.1V DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics—Step-Down Buck Converter Step-Down Buck Efficiency vs. Output Current (VOUT = 1.8V; L = 3.3µH) Output Current (mA) Efficiency (%) VIN = 4.2V VIN = 5V VIN = 5.5V 100 11 0 100 1000 VBAT = 2.7V VBAT = 4.2V VCHGIN = 4.5V VCHGIN = 5.0V VCHGIN = 6.0V VCHGIN = 5.5V VBAT = 3.6V Step-Down Buck Load Regulation vs. Output Current (VOUT = 1.8V; L = 3.3µH) Output Current (mA) Load Regulation (%) -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 11 0 100 1000 VBAT = 2.7V VBAT = 4.2V VCHGIN = 4.5V VCHGIN = 5.0V VCHGIN = 6.0V VCHGIN = 5.5V VBAT = 3.6V Step-Down Buck Line Regulation vs. CHGIN and Battery Input Voltage (VOUT = 1.8V; L = 3.3µH) Input VBAT, VCHGIN (V) Line Regulation (%) -0.5 -0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 0.5 2.5 3 3.5 4 4.5 5 5.5 6 4.2 IOUT = 1mA IOUT = 0.01mA IOUT = 10mA IOUT = 300mA IOUT = 200mA IOUT = 100mA VBAT VCHGIN IOUT = 50mA Step-Down Buck Output Voltage vs. Temperature (IOUT = 10mA) Temperature (°C) VOUT (V) 1.780 1.785 1.790 1.795 1.800 1.805 1.810 1.815 1.820 1.825 -50 -25 02 55 07 5 100 VCHGIN = 6.0V VBAT = 2.7V VBAT = 3.6V VBAT = 4.2V VCHGIN = 4.5V VCHGIN = 5.5V VCHGIN = 5.0V VBAT Line Transient Response Step-Down Buck (VBAT = 3.5V to 4.2V; IOUT = 300mA; VOUT = 1.8V; COUT = 4.7µF) Time (100µs/div) Output Voltage (top) (V) Input Voltage (bottom) (V) VIN = 2.7V VIN = 3.6V VIN = 4.2V 1.76 1.80 1.84 1.88 1.92 3.0 3.5 4.0 4.5 VO VBAT VCHGIN Line Transient Response Step-Down Buck (VCHGIN = 4.5V to 5.5V; IOUT = 300mA; VOUT = 1.8V; COUT = 4.7µF) Time (100µs/div) Output Voltage (top) (V) Input Voltage (bottom) (V) VIN = 2.7V VIN = 3.6V VIN = 4.2V 1.76 1.78 1.80 1.82 1.84 1.86 4.0 4.5 5.0 5.5 6.0 VO VCHGIN DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics—Step-Down Buck Converter (continued) Load Transient Response Step-Down Buck (IOUTBUCK = 10mA to 100mA; VBAT = 3.6V; VOUT = 1.8V; COUT = 4.7µF) Time (100µs/div) Output Voltage (top) (V) Output Current (bottom) (mA) VIN = 2.7V VIN = 3.6V VIN = 4.2V 1.60 1.70 1.80 1.90 2.00 100 VO IO Load Transient Response Step-Down Buck (IOUTBUCK = 100mA to 300mA; VBAT = 3.6V; VOUT = 1.8V; COUT = 4.7µF) Time (100µs/div) Output Voltage (top) (V) Output Current (bottom) (mA) 1.60 1.70 1.80 1.90 2.00 100 200 300 VO IO DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics—LDO1 LDO1 Load Regulation vs. Output Current (VOUT = 3.3V) Output Current (mA) Load Regulation (%) -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 11 0 100 1000 VBAT = 4.2V VBAT = 3.6V VBAT = 3.5V LDO1 Line Regulation vs. Battery Input Voltage (VOUT = 3.3V) Input Voltage VBAT (V) Line Regulation (%) -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 IOUT = 1mA IOUT = 50mA IOUT = 100mA IOUT = 200mA IOUT = 300mA LDO1 Output Voltage vs. Temperature (IOUT = 10mA) Temperature (°C) Output Voltage VOUT (%) -50- 25 02 55 07 5 100 -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 VBAT = 4.2V VBAT = 3.6V VBAT = 3.5V LDO1 Dropout Characteristics vs. Battery Input Voltage (VOUT = 3.3V) Input Voltage VBAT (V) Output Voltage VOUT (V) 3.260 3.265 3.270 3.275 3.280 3.285 3.290 3.295 3.300 3.305 IOUT = 1mA IOUT = 50mA IOUT = 100mA IOUT = 200mA IOUT = 300mA LDO1 Dropout Voltage vs. Output Current (VOUT = 3.3V) Output Current (mA) Dropout Voltage (mV) 100 120 140 160 180 200 05 0 100 150 200 250 300 -40°C 25°C 85°C Load Transient Response (10mA to 100mA; VBAT = 3.6V; VOUT = 3.3V; COUT = 22µF) Time (100µs/div) Output Voltage (top) (V) Load Current (bottom) (50mA/div) 3.26 3.28 3.30 3.32 3.34 100 VO IO DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics—LDO1 (continued) Load Transient Response (100mA to 300mA; VBAT = 3.6V; VOUT = 3.3V; COUT = 22µF) Time (100µs/div) Output Voltage (top) (V) Load Current (bottom) (100mA/div) 3.22 3.26 3.30 3.34 3.38 100 200 300 VO IO DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics—LDO2 LDO2 Load Regulation vs. Output Current (VOUT = 1.2V) Output Current (mA) Load Regulation (%) -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 11 0 100 1000 VBAT = 4.2V VBAT = 3.6V VBAT = 3.0V LDO2 Line Regulation vs. Battery Input Voltage (VOUT = 1.2V) Input Voltage VBAT (V) Line Regulation (%) -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 IOUT = 1mA IOUT = 50mA IOUT = 100mA IOUT = 150mA LDO2 Output Voltage vs. Temperature (IOUT = 10mA) Temperature (°C) Output Voltage VOUT (%) -50- 25 02 55 07 5 100 -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 VBAT = 4.2V VBAT = 3.6V VBAT = 3.0V LDO2 Dropout Voltage vs. Output Current (VOUT = 1.2V) Output Current (mA) Dropout Voltage (mV) 100 120 140 160 180 200 02 55 07 5 100 125 150 -40°C 25°C 85°C Load Transient Response (10mA to 150mA; VBAT = 3.6V; VOUT = 1.2V; COUT = 4.7µF) Time (100µs/div) Output Voltage (top) (V) Load Current (bottom) (50mA/div) 1.16 1.18 1.20 1.22 1.24 100 150 VO IO DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics—LDO5 LDO5 Load Regulation vs. Output Current (VOUT = 3.3V) Output Current (mA) Load Regulation (%) -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 11 0 100 1000 VBAT = 4.2V VBAT = 3.6V VBAT = 3.5V LDO5 Line Regulation vs. Battery Input Voltage (VOUT = 3.3V) Input Voltage VBAT (V) Line Regulation (%) -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 IOUT = 1mA IOUT = 50mA IOUT = 100mA IOUT = 150mA LDO5 Output Voltage vs. Temperature (IOUT = 10mA) Temperature (°C) Output Voltage VOUT (%) -50- 25 02 55 07 5 100 -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 VBAT = 4.2V VBAT = 3.6V VBAT = 3.5V LDO5 Dropout Characteristics vs. Battery Input Voltage (VOUT = 3.3V) Input Voltage VBAT (V) Output Voltage VOUT (V) 3.260 3.265 3.270 3.275 3.280 3.285 3.290 3.295 3.300 3.305 IOUT = 1mA IOUT = 50mA IOUT = 100mA IOUT = 150mA LDO5 Dropout Voltage vs. Output Current (VOUT = 3.3V) Output Current (mA) Dropout Voltage (mV) 100 120 140 160 180 200 02 55 07 5 100 125 150 -40°C 25°C 85°C Load Transient Response (10mA to 75mA; VBAT = 3.6V; VOUT = 3.3V; COUT = 4.7µF) Time (100µs/div) Output Voltage (top) (V) Load Current (bottom) (50mA/div) 3.26 3.28 3.30 3.32 3.34 100 VO IO DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics—LDO5 (continued) Load Transient Response (75mA to 150mA; VBAT = 3.6V; VOUT = 3.3V; COUT = 4.7µF) Time (100µs/div) Output Voltage (top) (V) Load Current (bottom) (50mA/div) 3.22 3.26 3.30 3.34 3.38 100 150 VO IO DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Typical Characteristics—General Quiescent Current vs. Input Voltage (VOUT = 1.8V; L = 3.3µH) Input VBAT, VCHGIN (V) Quiescent Current (µA) 100 150 200 250 300 350 400 450 500 -40°C 25°C 85°CVBAT VCHGIN Start-up Sequence (VCHGIN = 5.0V) Time (50µs/div) Output Voltage (2V/div) Buck LDO1 LDO2 LDO3 LDO4 LDO5 LDO3 Output Voltage Noise (No Load; Power BW: 100~100KHz) Frequency (Hz) Noise (µVRMS) 0.00 0.60 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40 6.00 100 1000 10000 100000 LDO3 Output Voltage Noise (IOUT3 = 10mA, Power BW = 100~100KHz) Frequency (Hz) Noise (µVRMS) 0.00 0.60 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40 6.00 100 1000 10000 100000 LDO3 Power Supply Rejection Ratio, PSRR (IOUT3 = 10mA, BW = 100~100KHz) Frequency (Hz) Magnitude (dB) 105 120 135 150 100 1000 10000 100000 DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Functional Block Diagram LDO2 Enable LDO1 Enable LDO4 LDO5 Enable Enable Enable LDO3 Enable BUCK CHGIN UVLO BAT PGND PVIN LX OUTBUCK OUT1 OUT2 VINVIN VIN VIN VIN VIN OUT3 OUT4 OUT5 REF AVIN2 EN5 EN4 EN3 EN _TEST EN _HOL D RESET Ref Ref Ref Ref Ref Ref CNOISE AGND AVIN1 VIN I 2 C and Enable Control EN_KEY ON_KEY SDA SCL ISET Ref Charger Control STAT ADPP ENBAT TS CT EN2 Functional Description The AAT3603A is a complete power management solu - tion. It seamlessly integrates an intelligent, stand-alone CC/CV (Constant Current/Constant Voltage), linear- mode single-cell battery charger with one step-down Buck converter and five low-dropout (LDO) regulators to provide power from either a wall adapter or a single-cell Lithium Ion/Polymer battery. If only the battery is available, then the voltage regula- tors and converter are powered directly from the battery. The charger is put into sleep mode and draws less than 1µA quiescent current. Typical Power Up Sequence The AAT3603A supports a variety of push-button or enable/disable schemes. A typical startup and shutdown process is ilustrated in Figures 1 and 2. System startup is initiated whenever one of the following conditions occurs: 1. A push-button is used to assert EN_KEY low. 2. A valid supply (> CHGIN UVLO) is connected to the charger input CHGIN. 3. A hands-free device or headset is connected, assert- ing EN_TEST high. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 The startup sequence for the AAT3603A core (Buck and LDO1) is typically initiated by pulling the EN_KEY pin low with a pushbutton switch, as shown in Figure 1. The Buck is the first block to be turned on. When the output of the Buck reaches 90% of its final value, LDO1 is enabled. When LDO1 reaches 90% of its final value, the 65ms RESET timer is initiated holding the microproces - sor in reset. When the RESET pin goes High, the µP can begin a power-up sequence. After the startup sequence has commenced, LDO2, LDO3, LDO4, and LDO5 can be enabled and disabled as desired using their independent enable pins, even while the Buck and LDO1 are still starting up. However, if they are shut down, then LDO2, LDO3, LDO4, and LDO5 cannot be enabled. The µP must pull the EN_HOLD signal high before the EN_KEY signal can be released by the push-button. This procedure requires that the push-button be held until the µP assumes control of EN_HOLD, providing protection against inadvertent momentary assertions of the push- button. Once EN_HOLD is high the startup sequence is complete. If the µP is unable to complete its power-up routine successfully before the user lets go of the push- button, the AAT3603A will automatically shut itself down. ( EN_KEY and EN_HOLD are OR’d internally to enable the two core converters.) Alternatively, the startup sequence is automatically started without the pushbutton switch when the CHGIN pin rises above its UVLO threshold. The system cannot be disabled until the voltage at the CHGIN pin drops below the falling UVLO threshold. The EN_TEST pin can also be used to startup the device for test purposes or for hands-free operation such as when connecting a headset to the system. Typical Power Down Sequence If only the battery is connected and the voltage level is above the BAT UVLO , then the EN_KEY pin can be held low in order to power down the AAT3603A. The user can initiate a shutdown process by pressing the push-button a second time. Upon detecting a second assertion of EN_KEY (by depressing the push-button), the AAT3603A asserts ON_KEY to interrupt the microprocessor which initiates an interrupt service routine that the user pressed the push-button. If EN_TEST and CHGIN are both low, the microprocessor then initiates a power- down routine, the final step of which will be to de-assert EN_HOLD, disabling LDO2, LDO3, LDO4, and LDO5. When the voltage at the CHGIN pin is above the CHGIN UVLO, the device cannot be powered down. If the volt - age at the CHGIN pin is below the CHGIN UVLO, EN_KEY must be held high and EN_HOLD must be held low in order to power down the AAT3603A. If LDO2, LDO3, LDO4, and LDO5 have not been disabled individually prior to global power down, then they will be turned off simultaneously with the Buck. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Po we r On Res et Po we r Input Vo lt age V CHGIN > V UV LO Fa ul t C ondit ions M onitorin g OV , OT , V TS V TS1 < < V TS 2 Pr ec o ndi ti oning Te st V MI N< VBAT Cu rre nt P hase Te st V BAT < V BAT _R EG Vo lt age Ph ase Te st I CH > I CH_T ER M No No Ye s No Pr econdit i oning (T ri ckle Char ge ) Co ns t ant Cu rre n t Char ge M ode Co ns t ant Vo lt age C harge M ode Ye s Ye s Ye s Ch arge Co mp le te d C har ge T im er C ont ro l No Re c har ge T es t V RCH< VBAT Ye s No S hut D ow n Ye s No En able Ye s No De vice T her ma l L oop Moni to r T J > 115 ϒC T her ma l Loop Cu rrent R educt i on in A DP Ch argi ng Mode Th er ma l Loop Cu rre nt Re duct io n in C.C. M ode No Ex pi re d T < Timeout Ye s Figure 4: System Operation Flow Chart for the Battery Charger. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Power Saving Mode After the charge cycle is complete, the battery charger turns off the series pass device and automatically goes into a power saving sleep mode. During this time, the series pass device will block current in both directions to prevent the battery from discharging through the battery charger. The battery charger will remain in sleep mode even if the charger source is disconnected. It will come out of sleep mode if either the battery terminal voltage drops below the V RCH threshold, the charger EN pin is recycled, or the charging source is reconnected. In all cases, the battery charger will monitor all parameters and resume charging in the most appropriate mode. Temperature Sense (TS) The TS pin is available to monitor the battery tempera - ture. Connect a 10k NTC resistor from the TS pin to ground. The TS pin outputs a 75µA constant current into the resistor and monitors the voltage to ensure that the battery temperature does not fall outside the limits depending on the temperature coefficient of the resistor used. When the voltage goes above 2.39V or goes below 0.331V, the charging current will be suspended. Charge Safety Timer (CT) While monitoring the charge cycle, the AAT3603A utilizes a charge safety timer to help identify damaged cells and to ensure that the cell is charged safely. Operation is as follows: upon initiating a charging cycle, the AAT3603A charges the cell at 12% of the programmed maximum charge until V BAT >2.8V. If the cell voltage fails to reach the preconditioning threshold of 2.8V (typ) before the safety timer expires, the cell is assumed to be damaged and the charge cycle terminates. If the cell voltage exceeds 2.8V prior to the expiration of the timer, the charge cycle proceeds into fast charge. There are three timeout periods: 1 hour for Trickle Charge mode, 3 hours for Constant Current mode, and 3 hours for Constant Voltage mode. The CT pin is driven by a constant current source and will provide a linear response to increases in the timing capacitor value. Thus, if the timing capacitor were to be doubled from the nominal 0.1µF value, the time-out periods would be doubled. If the programmable watch- dog timer function is not needed, it can be disabled by terminating the CT pin to ground. The CT pin should not be left floating or unterminated, as this will cause errors in the internal timing control circuit. The constant cur - rent provided to charge the timing capacitor is very small, and this pin is susceptible to noise and changes in capacitance value. Therefore, the timing capacitor should be physically located on the printed circuit board layout as close as possible to the CT pin. Since the accuracy of the internal timer is dominated by the capacitance value, a 10% tolerance or better ceramic capacitor is recom- mended. Ceramic capacitor materials, such as X7R and X5R types, are a good choice for this application. Programming Charge Current (ISET) At initial power-on, the charge current is always set to 100mA. The constant current mode charge level is user programmed with the I 2C interface and a set resistor placed between the ISET pin and ground. The accuracy of the constant charge current, as well as the precondition- ing trickle charge current, is dominated by the tolerance of the set resistor. For this reason, a 1% tolerance metal film resistor is recommended for the set resistor function. The programmable constant charge current levels from 100mA to 1A may be set by selecting the appropriate resistor value from Table 1, Figure 5, and Table 3. The ISET pin current to charging current ratio is 1 to 800. It is regulated to 1.25V during constant current mode unless changed using I 2C commands. It can be used as a charging current monitor, based on the equation: ICH = 800 ⋅  VISET RISET During preconditioning charge, the ISET pin is regulated to 12% of the fast charge current I SET voltage level (Figure 5), but the equation stays the same. During con- stant voltage charge mode, the ISET pin voltage will slew down and be directly proportional to the battery current at all times. Constant Charging Current ICH_CC (mA) Set Resistor Value (kW) 100 10 200 4.99 300 3.32 400 2.49 500 2 600 1.65 700 1.43 800 1.24 900 1.1 1000 1 Table 1: Constant Current Charge vs. ISET Resistor Value. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Reverse Battery Leakage The AAT3603A includes internal circuitry that eliminates the need for series blocking diodes, reducing solution size and cost as well as dropout voltage relative to con - ventional battery chargers. When the input supply is removed or when CHGIN goes below the AAT3603A’s under voltage-lockout (UVLO) voltage, or when CHGIN drops below V BAT, the AAT3603A automatically reconfig - ures its power switches to minimize current drain from the battery. Adapter Power Indicator (ADPP) This is an open drain output which will pull low when V CHGIN > 4.5V. When this happens the charge current will be reset to the default ISET values or I 2C programmed values. Charge Status Output (STAT) The AAT3603A provides battery charging status via a status pin. This pin is a buffered output with a supply level up to the LDO1 output. The status pin can indicate the following conditions: Event Description STAT No battery charging activity Low (to GND) Battery charging High (to VOUT1) Charging completed Low (to GND) Table 2: Charge Status Output (STAT). CHGIN Bypass Capacitor Selection CHGIN is the power input for the AAT3603A battery charger. The battery charger is automatically enabled whenever a valid voltage is present on CHGIN. In most applications, CHGIN is connected to either a wall adapter or USB port. Under normal operation, the input of the charger will often be “hot-plugged” directly to a powered USB or wall adapter cable, and supply voltage ringing and overshoot may appear at the CHGIN pin. A high quality capacitor connected from CHGIN to GND, placed as close as possible to the IC, is sufficient to absorb the energy. Wall-adapter powered applications provide flex- ibility in input capacitor selection, but the USB specifica- tion presents limitations to input capacitance selection. The CHGIN bypass capacitance value must be between 1µF and 4.7µF. Ceramic capacitors are often preferred for bypassing due to their small size and good surge cur- rent ratings, but care must be taken in applications that can encounter hot plug conditions as their very low ESR, in combination with the inductance of the cable, can cre- ate a high-Q filter that induces excessive ringing at the CHGIN pin. This ringing can couple to the output and be mistaken as loop instability, or the ringing may be large enough to damage the input itself. Although the CHGIN pin is designed for maximum robustness and an absolute maximum voltage rating of +6.5V for transients, atten - tion must be given to bypass techniques to ensure safe operation. As a result, design of the CHGIN bypass must take care to “de-Q” the filter. This can be accomplished Constant Current Mode Charge Current vs. ISET Resistor (VIN = 5V; VBAT = 3.6V) ISET Resistor (kΩ) ICH_CC (mA) 200 400 600 800 1000 1200 1400 0.1 11 0 100 ISET Voltage vs. Battery Voltage (CHGIN = 5.0V, RISET = 1.24kΩ) Battery Voltage (V) VISET (V) 0.2 0.4 0.6 0.8 1.2 1.4 Figure 5: Constant Current Mode Charge I CH_CC Setting vs. ISET Resistor and ISET Voltage vs. Battery Voltage. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 by connecting a 1 W resistor in series with a ceramic capacitor (as shown in Figure 6A), or by bypassing with a tantalum or electrolytic capacitor to utilize its higher ESR to dampen the ringing (as shown in Figure 6B). For additional protection, Zener diodes with 6V clamp volt - ages may also be used. In any case, it is always critical to evaluate voltage transients at the CHGIN pin with an oscilloscope to ensure safe operation. Thermal Considerations The actual maximum charging current is a function of charge adapter input voltage, the state of charge of the battery at the moment of charge, and the ambient tem - perature and the thermal impedance of the package and printed circuit board. The maximum programmable cur - rent may not be achievable under all operating param- eters. One issue to consider is the amount of current being sourced to the supply channels while the battery is being charged. The AAT3603A is offered in a TQFN55-36 package which can provide up to 4W of power dissipation when it is properly bonded to a printed circuit board and has a maximum thermal resistance of 25°C/W. Many consider- ations should be taken into account when designing the printed circuit board layout, as well as the placement of the charger IC package in proximity to other heat gen- erating devices in a given application design. The ambi- ent temperature around the charger IC will also have an effect on the thermal limits of a battery charging applica- tion. The maximum limits that can be expected for a given ambient condition can be estimated by the follow- ing discussion. First, the maximum power dissipation for a given situation should be calculated: (TJ(MAX) - TA)PD(MAX) = θJA Where: PD(MAX) = Maximum Power Dissipation (W) θJA = Package Thermal Resistance (°C/W) TJ(MAX) = Maximum Device Junction Temperature (°C) [150°C] TA = Ambient Temperature (°C) To USB Port or Wall Adapter To USB Port or Wall Adapter 1µF Ceramic (XR5/XR7) 4.7µF ESR > 1Ω CHGIN CHGIN (A) (B) Figure 6: Hot Plug Requirements. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Next, the power dissipation for the charger can be cal - culated by the following equation: P D = (V CHGIN - V BAT ) · I CH_CC + (V CHGIN · I OP ) + (V BAT - V OUT1 ) · I OUT1 + (V BAT - V OUT2 ) · I OUT2 + (V BAT - V OUT3 ) · I OUT3 + (V BAT - V OUT4 ) · I OUT4 + (V BAT - V OUT5 ) · I OUT5 + I OUTBUCK 2 · R DS(ON)L · + R DS(ON)H · [V BAT - V OUTBUCK ] V BAT V OUTBUCK V BAT Where: PD = Total Power Dissipation by the Device VCHGIN = CHGIN Input Voltage VBAT = Battery Voltage at the BAT Pin ICH_CC = Constant Charge Current Programmed for the Application IOP = Quiescent Current Consumed by the IC for Normal Operation [0.5mA] VBAT = Load current from the BAT pin for the system LDOs and step-down converter RDS(ON)H and R DS(ON)L = On-resistance of step-down high and low side MOSFETs [0.8W each] VOUTX and I OUTX = Output voltage and load currents for the LDOs and step-down converter By substitution, we can derive the maximum charge cur- rent before reaching the thermal limit condition (T REG = 100°C, Thermal Loop Regulation). The maximum charge current is the key factor when designing battery charger applications. I CH_CC(MAX) = - [(V BAT - V OUT1 ) · I OUT1 ] - (V BAT - V OUT2 ) · I OUT2 - [(V BAT - V OUT3 ) · I OUT3 ] - (V BAT - V OUT4 ) · I OUT4 - (V BAT - V OUT5 ) · I OUT5 V CHGIN - V BAT - I OUTBUCK 2 · R DS(ON)L · + R DS(ON)H · (V BAT - V OUTBUCK ) V BAT V OUTBUCK V BAT (T REG - T A ) θJA - (V CHGIN · I OP ) - (V CHGIN - V BAT ) · I BAT In general, the worst condition is when there is the greatest voltage drop across the charger, when battery voltage is charged up to just past the preconditioning voltage threshold and the LDOs and step-down con - verter are sourcing full output current. For example, if 977mA is being sourced from the BAT pin to the LDOs and Buck channels (300mA to LDO1, 100mA to LDO2-5, and 277mA to the Buck; see buck efficiency graph for 300mA output current) with a CHGIN supply of 5V, and the battery is being charged at 3.5V with 800mA charge current, then the power dissipated will be 1.84W. A reduction in the charge current (through I 2C) may be necessary in addition to the reduction provided by the internal thermal loop of the charger itself. For the above example at T A = 30°C, the I CH_CC(MAX) = 1.4A. Thermal Overload Protection The AAT3603A integrates thermal overload protection circuitry to prevent damage resulting from excessive thermal stress that may be encountered under fault con- ditions, for example. This circuitry disables all regulators if the AAT3603A die temperature exceeds 140°C, and prevents the regulators from being enable until the die temperature drops by 15°C (typ). Synchronous Step-Down Converter (Buck) The AAT3603A contains a high performance 300mA, 1.5MHz synchronous step-down converter. The step- down converter operates to ensure high efficiency per - formance over all load conditions. It requires only three external power components (C IN, COUT, and L). A high DC gain error amplifier with internal compensation controls the output. It provides excellent transient response and load/line regulation. Transient response time is typically less than 20µs. The converter has soft start control to limit inrush current and transitions to 100% duty cycle at drop out. The step-down converter input pin PVIN should be con - nected to the BAT output pin. The output voltage is internally fixed at 1.8V. Power devices are sized for 300mA current capability while maintaining over 90% efficiency at full load. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Input/Output Capacitor and Inductor Apart from the input capacitor that is shared with the LDO inputs, only a small L-C filter is required at the output side for the step-down converter to operate prop- erly. Typically, a 3.3µH inductor such as the Sumida CDRH2D11NP-3R3NC and a 4.7µF ceramic output capac- itor are recommended for low output voltage ripple and small component size. Ceramic capacitors with X5R or X7R dielectrics are highly recommended because of their low ESR and small temperature coefficients. A 10µF ceramic input capacitor is sufficient for most applica - tions. Control Loop The converter is a peak current mode step-down con - verter. The inner, wide bandwidth loop controls the inductor peak current. The inductor current is sensed through the P-channel MOSFET (high side) which is also used for short circuit and overload protection. A fixed slope compensation signal is added to the sensed cur - rent to maintain stability 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 inductor cur - rent to force a constant output voltage for all load and line conditions. The voltage feedback resistive divider is internal and the error amplifier reference voltage is 0.45V. The voltage loop has a high DC gain making for excellent DC load and line regulation. The internal volt - age loop compensation is located at the output of the transconductance voltage error amplifier. Soft Start Soft start slowly increases the internal reference voltage when the input voltage or enable input is initially applied. It limits the current surge seen at the input and elimi - nates output voltage overshoot. Current Limit and Over-Temperature Protection For overload conditions the peak input current is limited. As load impedance decreases and the output voltage falls closer to zero, more power is dissipated internally, raising the device temperature. Thermal protection com- pletely disables switching when internal dissipation becomes excessive, protecting the device from damage. The junction over-temperature threshold is 140°C with 15°C of hysteresis. Linear LDO Regulators (OUT1, OUT4, and OUT5) 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. There are two LDO input pins, AVIN1/2, which should be connected to the BAT output pin. The LDO1, LDO4 and LDO5 outputs are initially fixed at 3.3V. The user can program the output voltages for those LDOs to 2.8V, 2.85V, or 2.9V using I 2C. 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 LDO4 and LDO5, fast turn-off time response is achieved by an active output 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. Input/Output Capacitors The LDO regulator output has been specifically optimized to function with low cost, low ESR ceramic capacitors. However, the design will allow for operation over a wide range of capacitor types. The input capacitor is shared with all LDO inputs and the step-down converter. A 10µF is sufficient. A 10µF ceramic output capacitor is recommended for LDO 2-3; a 4.7µF ceramic output capacitor is recommended for LDO4-5; and a 22µF out - put capacitor is recommended for LDO1. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Current Limit and Over-Temperature Protection The regulator comes with complete short circuit and thermal protection. The combination of these two internal protection circuits gives a comprehensive safety system to guard against extreme adverse operating conditions. I2C Serial Interface and Programmability Serial Interface Many of the features of the AAT3603A 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 I 2C protocol consists of 2 active wire SDA (serial data line) and SCL (serial clock line). Both wires are open drain and require an external pull up resistor to V CC (BAT 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, but the AAT3603A supports the write protocol only. Since the protocol has a dedi - cated bit for Read or Write access (R/W), when commu- nicating with AAT3603A, this bit must be set to “0”. The timing diagram in Figure 7 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 V CC via external resistor). As depicted in Figure 7, a START condition 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 7, 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 ACKNOWLEGE and releases the SCL and SDA pins. ACK from slave ACK from slave ACK from slave START SCL SDA in cl uding R/ W bi t, Ch i p A ddr ess = 0 x98 ST OPACK W AC KAC K 11001 000 Da ta LS BMS BL SBCh ip Ad dress MS BL SBRe gister A ddress MS B Figure 7: I2C Timing Diagram. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 Notes concerning the operation of the CHG 2, CHG1 and CHG0 bits or ISET code:

Once the part is turned on using the EN_KEY pin (and there is a BAT and/or CHGIN supply), and data is sent through I2C, the I2C codes in the registers will always be preserved until the part is shut down using the EN_HOLD (going low) or if the BAT and CHGIN supply are removed. If the part is turned on by connecting supply CHGIN (and not through EN_KEY), then when the CHGIN is removed, the part will shut down and all I 2C registers will be cleared.
ISET Code 000 in Register 0x00, bits 2,3,4 = 100mA.
If the part has been turned on by EN_KEY and CHGIN is disconnected then reconnected, the ISET code will be forced to 000 and the current will be set to 100mA. The next time any I2C register is programmed (even if it is not for the ISET code), the ISET code will revert back to what it was before. For example, if the ISET code is set to 010 and the part was turned on with EN_KEY, then when CHGIN is disconnected then reconnected, the charger will be set to 100mA. Then if any other command is sent, the ISET code will remain 010. Term1 Term0 Termination Current (as % of Constant Current Charge) 0 0 5% (default) 0 1 10% 1 0 15% 1 1 20% Table 4: Term Bit Setting for the Termination Current Level. RCHG1 RCHG0 Recharge Threshold 0 0 4.00V (default) 0 1 4.05V 1 0 4.10V 1 1 4.15V Table 5: RCHG Bit Setting for the Battery Charger Recharge Voltage Level. Timer Charger Watchdog Timer

0 ON (default)

1 OFF (and reset to zero)

Table 6: Timer Bit Setting for the Charger Watchdog Timer. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 LDO11 LDO10 LDO1 Output Voltage 0 0 3.30V (default) 0 1 2.90V 1 0 2.85V 1 1 2.80V LDO41 LDO40 LDO4 Output Voltage 0 0 3.30V (default) 0 1 2.90V 1 0 2.85V 1 1 2.80V LDO51 LDO50 LDO5 Output Voltage 0 0 3.30V (default) 0 1 2.90V 1 0 2.85V 1 1 2.80V Table 7: LDO Bit Setting for LDO Output Voltage Level. Layout Guidance Figure 10 is the schematic for the evaluation board. The evaluation board has extra components for easy evalua- tion; the actual BOM need for a system is shown in Table 8. When laying out the PC board, the following layout guideline should be followed to ensure proper operation of the AAT3603A: 1. The exposed pad EP must be reliably soldered to PGND/AGND and multilayer GND. The exposed ther- mal pad should be connected to board ground plane and pins 2 and 16. The ground plane should include a large exposed copper pad under the package with VIAs to all board layers for thermal dissipation. 2. The power traces, including GND traces, the LX traces and the VIN trace should be kept short, direct and wide to allow large current flow. The L1 connec- tion to the LX pins should be as short as possible. Use several via pads when routing between layers. 3. The input capacitors (C1 and C2) should be con - nected as close as possible to CHGIN (Pin 28) and PGND (Pin 2) to get good power filtering. 4. Keep the switching node LX away from the sensitive OUTBUCK feedback node. 5. The feedback trace for the OUTBUCK pin should be separate from any power trace and connected as closely as possible to the load point. Sensing along a high current load trace will degrade DC load regula - tion. 6. The output capacitor C4 and L1 should be connected as close as possible and there should not be any signal lines under the inductor. 7. The resistance of the trace from the load return to the PGND (Pin 2) should be kept to a minimum. This will help to minimize any error in DC regulation due to differences in the potential of the internal signal ground and the power ground. Quantity Value Designator Footprint Description 5 10µF C1, C2, C3, C7, C8, C14, C15 0603 Capacitor, Ceramic, X5R, 6.3V, ±20% 2 22µF C9 0805 Capacitor, Ceramic, 20%, 6.3V, X5R 4 4.7µF C4, C5, C6 0603 Capacitor, Ceramic, 20%, 6.3V, X5R 3 0.1µF C10, C11, C12 0402 Capacitor, Ceramic, 16V, 10%, X5R 1 0.01µF C13 0402 Capacitor, Ceramic, 16V, 10%, X7R 1 3.3µH L1 CDRH2D Inductor, Sumida CDRH2D11NP-3R3NC 9 100K R5, R8, R20, R21, R22, R23, R25, R26, R27 0402 Resistor, 5% 8 10K R17, R19, R24, R29, R31, R32, R33, R37 0402 Resistor, 5% 1 1.24K R18 0402 Resistor, 1% Table 8: Minimum AAT3603A Bill of Materials. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Header 13X2H 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Header 13X2H EN_TEST1 EN_HOLD2 EN_KEY3 ON-KEY 4 EN25 EN36 EN47 EN58 OUT5 9OUT4 10 AVIN2 11 OUT3 12OUT2 13 AVIN1 14 OUT1 15 AGND 16 CNOISE 17 RESET 18 ADPP 19 LX 20 PGND 21 PVIN 22 OUTBUCK 23 N/C 24N/C 25 BAT 26BAT 27CHGIN28 CHGIN29 ENBAT30 TS31 ISET32 CT33 STAT 34 SDA35 SCL36 GND_SLUG 37 J11 VBUS/VCHG BUCK OUT5 OUT4 OUT3 OUT2 OUT1 VBAT BAT VDIG VDIG VDIG VDIG CHGINVDIGBAT PWR_ON RX_EN STAT BAT_ID VANA VTCXO VCORE ACOK_N RESET_N BAT_ID VDIG PON_N CHG_EN TP2 CHGIN TP1 VBAT TP3 ACOK_N TP4 PON_N TP5 RESET_N TP6 STAT TP7 GND TP8 GND SDA SCL SDA1 SCL2 GND3 J10 DATA HEADER VBATT PWR_HOLD HF_PWR PWR_ON VDIG VRX VTX ANA_EN TX_EN RX_EN VBATT TCXO_EN VBUS VCHG VBAT L1 3.3µH ACOK_N PON_N RESET_N STAT VCORE VRX VTX VTCXO VANA VDIG J13 RX_EN J14 TX_EN TX_EN J15 TCXO_EN TCXO_EN J16 ANA_EN ANA_EN J20 CHG_EN CHG_EN J18 PWR_HOLD PWR_HOLD J17 HF_PWR HF_PWR CMPT3904 buckout CHGIN OUT1 OUT2 OUT3 OUT4 OUT5 BAT TP9L X VDIG R34 0 R35 0 R36 0 SW1 PWR_ON R30 NP1K STAT R31 10K R33 10K

2 J12

4.75K 100K 100K R2 4 10K R19 10K R20 100K R21 100K R22 100K R23 100K R25 100K R2 7 100K BAT 10µF C10 0.1µF C11 0.1µF C12 0.1µF R18 1.24K C13 0.01µF 4.7µF 4.7µF 4.7µF 10µF 10µF 22µF C6 C7 C8 22µF R1 0 R32 NP 10k TP12 GND C15 22µF C16 0.001µF C17 0.001µF R380 R390 AAT3603A Figure 10: AAT3603A Evaluation Kit Schematic. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 26, 2012

Ordering Information

Package Part Marking1 Part Number (Tape and Reel)2 TQFN55-36 7TXYY AAT3603AIIH-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. Packaging Information TQFN55-36 0.750 ± 0.050 0.000 + 0.050 - 0.000

0.203 REF

0.200 ± 0.050 0.450 ± 0.050

0.40 BSC

5.000 ± 0.050 5.000 ± 0.050 3.600 ± 0.050 Detail "A" 3.600 ± 0.050 To p View Side View Detail "A" Bottom View Index Area (D/2 x E/2) R = 0.1 C = 0.3 All dimensions in millimeters. 1. XYY = assembly and date code. 2. Sample stock is gener ally held on part numbers listed in BOLD. 3. 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. DISCONTINUED

Total Power Solution for Portable Applications Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202212A • 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. DISCONTINUED

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Skyworks Solutions Inc. AAT3603A overview.

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AAT3603A is listed in the IC category. Available datasheets include documents from Skyworks Solutions Inc.. DigiCamel provides a local PDF and searchable HTML technical text for online reference.

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Total Power Solution for Portable Applications July 26, 2012

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Total Power Solution for Portable Applications July 26, 2012

Source title AAT3603A Datasheet(PDF) - Skyworks Solutions Inc.

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