AAT3125 SKYWORKS | Alldatasheet

Document overview

  • Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
  • PDF pages: 11

Technical content

Features

  • V IN Range: 2.7V to 5.5V
  • Regulated Fractional Charge Pump
  • 100mA Output Current
  • Reverse Load Protection
  • Power Good Flag
  • SRP Detection Flag
  • SRP Ready Flag
  • Output Short-Circuit and Thermal Protection
  • Under-Voltage Protection
  • Less than 1 μA Consumed While Disabled
  • Designed to Allow Operation with Output Capacitance as Low as 3.3μF
  • 16-pin QFN44 Package
  • -40°C to +85°C Temperature Range

Applications

  • Cell Phones
  • Hand-Held Computers
  • PDAs

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202063A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 2012 Pin Descriptions Pin # Symbol Function

1 POK1

Power OK 1. Open drain output with 4.0V voltage detector. When the OUT pin rises above the detected voltage (4.0V), POK1 will transition from low to high state. Similarly, when the output falls below 4.0V, POK1 will transition from high to low. A 10k pull-up resistor is recommended.

2 POK2

Power OK 2. Open drain output with 4.4V voltage detector. When the OUT pin rises above the detected voltage (4.4V), POK2 will transition from low to high state. Similarly, when the output falls below 4.4V, POK2 will transition from high to low. A 10k pull-up resistor is recommended.

3 SESDET

Session detect. Open drain output with 2.0V voltage detector. When the OUT pin rises above the detected voltage (2.0V), it will transition from low to high state. Similarly, when the output falls below 2.0V, SES- DET will transition from high to low. A 10k pull-up resistor is recommended.

4 SRRDY

Session request ready. Open drain output with 0.6V voltage detector. When the OUT pin rises above the detected voltage (0.6V), it will transition from low to high state. Similarly, when the output falls below 0.6V, SRRDY will transition from high to low. A 10k pull-up resistor is recommended. 5 OUT Power output to VBUS. 6 C1+ Flying capacitor 1 positive terminal. 7 C1- Flying capacitor 1 negative terminal. 8, 13 N/C No connect. 9 OUTCP Charge pump output. Requires 1 μF bypass capacitor to ground. 10 C2+ Flying capacitor 2 positive terminal. 11 C2- Flying capacitor 2 negative terminal. 12 GND Ground. 14 VIN Input power supply. Requires 1 μF bypass capacitor to ground. 15 SR Session request input control pin. Should not be left fl oating. Must connect to high or low. For more de- tails, see Table 1. 16 EN Enable input control pin. When in the low state, the AAT3125 is powered down and consumes a small amount of power. When connected high, it is in normal operation. This pin should not be left fl oating. For more details, see Table 1. EP Exposed paddle (bottom); connect to GND directly beneath package. Pin Configuration QFN44-16 (Top View) POK1 POK2 SESDET SRRDY OUT C1+ C1- N/C OUTCP C2+ C2- GND N/C VIN SR EN

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202063A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 2012 1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at co nditions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time. 2. Based on long-term current density limitation. 3. Human body model is a 100pF capacitor discharged through a 1.5k resistor into each pin. 4. Mounted on an FR4 board. 5. Derate 20mW/°C above 25°C. Absolute Maximum Ratings1 Symbol Description Value Units VIN, VOUT Any Pin to GND -0.3 to 6 V tSC OUT Short-Circuit Duration Inde fi nite s IOUT2 Output Current 150 mA TJ Operating Temperature Range -40 to 85 °C TS Storage Temperature Range -65 to 150 °C VESD ESD Rating3 - HBM 2000 V Thermal Information Symbol Description Value Units JA Maximum Thermal Resistance4 50 °C/W PD Maximum Power Dissipation (TA = 25°C)5 2.0 W

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202063A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 2012 1. The AAT3125 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assu red by design, characterization, and correla- tion with statistical process controls. Electrical Characteristics1 VIN = 3.5V; CIN = COUT = C1 = C2 = 1.0μF; TA = -40°C to +85°C. Unless otherwise noted, typical values are TA = 25°C. Symbol Description Conditions Min Typ Max Units Input Power Supply VIN Operating Range 2.9 5.5 V Icc3 Operating Current SRP EN = 1, SR = 1, OUT = IN 60 110 μA Icc2 Operating Current CP EN = 1, SR = 0 1 3 mA Icc1 Shutdown Current 1 EN = 0, SR = 1 1 2 μA Icc0 Shutdown Current 0 EN = 0, SR = 0 1 μA Output Power Supply VOUT Output Regulation I OUT = 0 4.6 5.25 V ICCOUT Operating Current EN = 0 7 12 μA IOUT Output Current 3.2 ≤VIN ≤5.5V, VOUT > 4.4V 50 65 mA 3.35 ≤VIN ≤5.5V, VOUT > 4.4V 100 VCS Current Sense Trip Level VCS = I OUT x RCS 40 60 90 mV ROFF Pull-Down Resistance EN = 0, SR = 1 700 1000 1500  ISR SR Current Pulse OUT < (IN-1.0v) 5 10 20 mA Charge Pump  Effi ciency V IN = 3.75V, IOUT = 50mA 90 % TSS Soft-Start Time OUT < 0.1 to OUT > 4.4 100 μs FCLK Clock Frequency 750 kHz EN, SR VIL Input Threshold Low 0.4 V VIH Input Threshold High 1.4 V IEN(SINK) EN Input Current V IN = VEN = 5.5V -1 1 μA ISR(SINK) SR Input Current V IN = VSR = 5.5V -1 1 μA POK1 VPOK1 POK Trip Threshold V OUT Rising 3.8 4.0 4.2 V VPOK1(HYS) POK Hysteresis 50 mV VPOK1(OL) POK Output Voltage I SINK = 1mA 0.3 V IPOK1 POK Leakage Current V POK = 5.5V, 25°C 100 nA POK2 VPOK2 POK Trip Threshold V OUT Rising 4.18 4.4 4.62 V VPOK2(HYS) POK Hysteresis 50 mV VPOK2(OL) POK Output Voltage I SINK = 1mA 0.3 V IPOK2 POK Leakage Current V POK = 5.5V, 25°C 100 nA SESDET VSD SD Trip Threshold V OUT Rising 1.9 2.0 2.1 V VSD(HYS) SD Hysteresis 50 mV VSD(OL) SD Output Voltage I SINK = 1mA 0.3 V ISD SD Leakage Current V SD = 5.5V, 25°C 100 nA SRRDY VSRRDY SRRDY Trip Threshold V OUT Rising 0.4 0.6 0.8 V VSRRDY(HYS) SRRDY Hysteresis 20 mV VSRRDY(OL) SRRDY Output Voltage I SINK = 1mA 0.3 V ISRRDY SRRDY Leakage Current V SRRDY = 5.5V, 25°C 100 nA

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202063A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 2012 EN SR Charge Pump Current Source SRRDY POK SESDET Discharge Resistor 1 0 ON OFF ON ON ON OFF 1 1 OFF ON ON ON ON OFF 0 0 OFF OFF OFF OFF ON OFF 0 1 OFF OFF OFF OFF ON ON Table 1: Operational States.

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202063A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 2012 Typical Characteristics Unless otherwise noted, VIN = 3.5V, CIN = COUT = C1 = C2 = 1μF, TA = 25°C. Charge Pump ON/OFF Timing Time (2ms/div) OUT (1V/div) IIN (100mA/div) EN (1V/div) Efficiency vs. Load Current 100 1 10 100 1000 Load Current (mA) Efficiency (%) VIN = 3.8V VIN = 3.4V Charge Pump Waveforms (100mA load) Time (1µs/div) V (10mV/div) IN OUT Load Transient Response (10mA to 100mA) Time (4ms/div) VOUT (100mV/div) Charge Pump Output Voltage vs. Load Current 4.5 4.7 4.9 5.1 5.3 5.5 1 10 100 1000 Load Current (mA) Charge Pump Output Voltage (V) VIN = 3.9V VIN = 3.7V Charge Pump Output Voltage vs. Input Voltage (ILOAD = 100mA) 012345 Input Voltage (V) Output Voltage (V)

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202063A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 2012 Typical Characteristics Unless otherwise noted, VIN = 3.5V, CIN = COUT = C1 = C2 = 1μF, TA = 25°C. Operating Current vs. Input Voltage (EN = 1; SR = 0; Charge Pump Mode) 0.000 0.200 0.400 0.600 0.800 1.000 1.200 01 23456 Input Voltage (V) ICC2 (mA) Operating Current vs. Input Voltage (EN = 1; SR = 0; Outside Current Source Mode) 012345 Input Voltage (V) ICC3 (µA) Shutdown Current vs. Input Voltage (EN = 0; SR = 1) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 0123456 Input Voltage (V) ICC1 (µA) ICCOUT vs. VOUT 01 23456 Output Voltage (V) ICCOUT (µA) ISR vs. VOUT (EN = 1; SR = 1) 01 2 34 Output Voltage (V) ISR (mA) VIN = 4.2V VIN = 3.2V Charge Pump POK Timing Time (100µs/div) OUT (5V/div) EN (2V/div) POK2 (5V/div) POK1 (5V/div) SESDET (5V/div) SRRDY (5V/div)

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202063A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 2012 Typical Characteristics Unless otherwise noted, VIN = 3.5V, CIN = COUT = C1 = C2 = 1μF, TA = 25°C. Falling SESDET Timing Time (100ms/div) OUT (5V/div) EN/SR (5V/div) SESDET (5V/div) Rising SESDET, SRRDY Timing (120µF Load) Time (10ms/div) OUT (5V/div) EN, SR (5V/div) SESDET (5V/div) SRRDY (5V/div) VBUS Pulsing for SRP (VBUS Rise Time; 5µF on VBUS) Time (1ms/div) VBUS (V) VBUS Pulsing for SRP (VBUS Rise Time; 100µF on VBUS) Time (10ms/div) VBUS (V)

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202063A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 2012 Functional Block Diagram Voltage Reference Control UVLO OTMP IN POK1 GND SR OUTCP 10mA EN 4.0 POK2 4.4 SESDET 2.0 SRRDY 0.6 5V Charge Pump C1+ C1- C2+ C2- OUT OC Functional Description Charge Pump The AAT3125 charge pump uses a 1.5X topology; the two flying capacitors are charged in series and dis- charged in parallel. Using this topology, output current is approximately 2/3 input current. Since the power bus in battery-operated devices that use a single cell lithium- ion/polymer battery ranges from 3V to 4.5V, an output voltage above 4.4V can be maintained. Output voltage is regulated to 5V and output current is limited by the value of R CS. The charge pump is designed to operate safely with any combination of input and output voltag- es. Current is not allowed to flow from OUT to IN. 10mA Current Source A 10mA current source supplies current to OUT for V BUS pulsing during SRP. During V BUS pulsing, the length of time needed to charge capacitance connected to OUT distinguishes between non-SRP capable devices and SRP capable devices. Using 10mA, SESDET should rise about 7ms after SRRDY rises when an OTG device is connect- ed. With a non-OTG device connected, this period is at least 70ms. 10mA should not damage non-SRP capable hosts that allow reverse current flow from the bus. Current is not allowed to flow from OUT to IN through the current source. SESDET MicroPower Voltage Detector The SESDET open drain output signals the use of SRP while the system is acting as the A device. OUT powers this detector because the local 5V bus may not be pow- ered when the B device initiates SRP. Since V BUS provides no more than 150μA to OUT, the detector consumes only 7μA. SRRDY Voltage Detector The SRRDY open drain output signals that V BUS is ready for SRP. SRRDY is powered by IN and is active as long as IN is above the UVLO level. SRRDY is true (low) when OUT is below the SRRDY threshold (0.6V nominal). SRRDY is false (open) when OUT is above the SRRDY threshold or when EN is a logic low. Upon activation by EN, there is no negative glitch that can be mistaken for OUT below 0.8V.

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202063A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 2012 Power OK USB OTG devices connected as Host must maintain V OUT above 4.4 volts or report that it is below 4.4 volts. Two Power OK outputs (POK1 and POK2) provide a window comparison of the V OUT voltage. The POK1 open drain output is pulled low if V OUT drops below 4.0V  5%, and the POK2 open drain output is pulled low if V OUT drops below 4.4V  5%. Under-Voltage Lockout Circuits other than the MicroPower voltage detector (SESDET) require voltage to be present on IN. Under- voltage lockout guarantees that sufficient voltage is present on IN to ensure operation. All functions other than the SESDET flag are disabled if the voltage on IN is less than 2V. Discharge Resistor In accordance with the USB OTG specification, a pull- down resistor is provided to discharge V BUS at a current of not more than 8mA. Over-Temperature Protection If the AAT3125 junction temperature exceeds 125°C, the charge pump is shut down.

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202063A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 14, 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 fo r errors or omissions in these materials or the information contained herein. Sky- works may change its documentation, products, services, specifi cations 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 confl icts, incompatibilities, or other diffi culties 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 specifi cations as a result of design defects, errors, or operation of products outside of pub- lished parameters or design specifi cations. 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 specifi cations 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 identifi cation 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. 1. XYY = assembly and date code. 2. Sample stock is generally 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 c onnection.

Ordering Information

Package Marking 1 Part Number (Tape and Reel)2 QFN44-16 ITXYY AAT3125ISN-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

4.000 ± 0.050 Pin 1 Dot By Marking 2.400 ± 0.050 0.550 ± 0.020 2.400 ± 0.050 4.000 ± 0.050 2.280 REF

0.650 BSC

0.900 ± 0.100 Pin 1 Identification C0.3 13 16 0.025 ± 0.025 0.214 ± 0.036 0.330 ± 0.075 Top View Bottom View Side View All dimensions in millimeters.