AAT3151 Datasheet PDF (High Efficiency 1X/1.5X/2X Charge Pump)

AAT3151 - High Efficiency 1X/1.5X/2X Charge Pump

Description

The AAT3151 is a low noise, constant frequency charge pump DC/DC converter that uses a tri-mode load switch (1X), fractional (1.5X), and doubling (2X) conversion to maximize efficiency for white LED applications.

The AAT3151 is capable of driving four white LEDs at a total of 120mA from a 2.7V to 5.

Features

VIN Range: 2.7V to 5.5V.
Fully Programmable Current with Single Wire.
16-Step Logarithmic Scale.
15/20/30mA Max Current.
Four Low-Current Settings Down to 50µA.
Low IQ (50µA) for Low-Current Mode.
Tri-Mode 1X, 1.5X, and 2X Charge Pump for Maximum Efficiency and VF Coverage.
Drives Four Channels of LEDs.
Individual Main/Sub-Group Control.
No Inductors, Low Noise Operation.
1MHz Constant Switching Frequency.

Datasheet Details

Part number	AAT3151
Manufacturer	Skyworks
File Size	1.06 MB
Description	High Efficiency 1X/1.5X/2X Charge Pump
Datasheet	AAT3151 Datasheet

📁 Similar Datasheet

AAT3151 - High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications (Advanced Analogic Technologies)

AAT3152 - High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications (Advanced Analogic Technologies)

AAT3153 - High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications (Advanced Analogic Technologies)

AAT3155 - High Efficiency 1X/1.5X/2X Charge Pump (AAT)

AAT3156 - High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications (Advanced Analogic Technologies)

AAT3157 - High Efficiency 1X/1.5X/2X Charge Pump (AAT)

AAT3158 - High Efficiency 1X/1.5X/2X Charge Pump (AAT)

AAT3103 - 3-Channel Charge-Pump LED Driver (Advanced Analog Technology)

AAT3104 - Low Cost 1x/2x 4 Channel Charge Pump WLED Driver (Advanced Analogic Technologies)

AAT3110 - MicroPower Regulated Charge Pump (Advanced Analogic Technologies)

Full PDF Text Transcription

Click to expand full text

DATA SHEET AAT3151 High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications General Description The AAT3151 is a low noise, constant frequency charge pump DC/DC converter that uses a tri-mode load switch (1X), fractional (1.5X), and doubling (2X) conversion to maximize efficiency for white LED applications. The AAT3151 is capable of driving four white LEDs at a total of 120mA from a 2.7V to 5.5V input. The current sinks may be operated individually or in parallel for driving higher-current LEDs. A low external parts count (two 1µF flying capacitors and two small 1µF capacitors at VIN and VOUT) makes the AAT3151 ideally suited for small battery-powered applications.

Published: Jun 28, 2019 |