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AAT3111

Advanced Analogic Technologies
Part Number AAT3111
Manufacturer Advanced Analogic Technologies
Description MicroPower Regulated Charge Pump
Published Mar 23, 2005
Detailed Description AAT3111 MicroPower™ Regulated Charge Pump General Description The AAT3111 ChargePump™ is a MicroPower switched-capacitor...
Datasheet PDF File AAT3111 PDF File

AAT3111
AAT3111

Overview
AAT3111 MicroPower™ Regulated Charge Pump General Description The AAT3111 ChargePump™ is a MicroPower switched-capacitor voltage converter that delivers a regulated output.
No external inductor is required for operation.
Using three small capacitors, the AAT3111 can deliver up to 150mA to the voltage regulated output.
The AAT3111 features very low quiescent current and high efficiency over a large portion of its load range making this device ideal for battery-powered applications.
Furthermore, the combination of few external components and small package size keeps the total converter board area to a minimum in space restricted applications.
The AAT3111 operates in an output-regulated voltage doubling mode.
The regulator uses a pulse-skipping technique to provide a regulated output from a varying input supply.
The AAT3111 contains a thermal management circuit to protect the device under continuous output short circuit conditions.
The AAT3111 is available in a surface mount 6-pin SOT23 or 8-pin SC70JW package and is rated from -40 to 85°C.
The AAT3111 ChargePump™ is a member of AnalogicTech's Total Power Management IC product family.
Features • • ChargePump™ • • • • • • • • • Step-up type voltage converter Input Range • AAT3111-3.
6: 1.
8V to 3.
6V • AAT3111-3.
3: 1.
8V to 3.
3V MicroPower consumption: 20µA 3.
6V, 3.
3V Regulated ±4% output 3.
6V Output Current • 100mA with VIN ≥ 3.
0V • 20mA with VIN ≥ 2.
0V 3.
3V Output Current • 100mA with VIN ≥ 2.
5V • 20mA with VIN ≥ 1.
8V High Frequency 750 kHz operation Shutdown mode draws less than 1µA Short-circuit/over-temperature protection 2kV ESD Rating SC70JW-8 or SOT23-6 package Preliminary Information Applications • • • • • Handheld Electronics Digital Cameras PDAs Battery Back Up Supplies MP3 Players Typical Application AAT3111 VOUT COUT VOUT C+ 1uF 10uF GND VIN CCIN VIN ON/OFF SHDN 10uF 3111.
2002.
3.
0.
91 1 AAT3111 MicroPower™ Regulated Charge Pump Pin Descriptions Pin # SOT-23-6 SC70JW-8 Symbol VOUT GND SHDN C...


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