AAT AAT2856
The AAT2856 is a highly integrated charge pump with dual linear regulators optimized for systems powered from lithium-ion/polymer batteries. The charge pump provides power for white LED backlight. The AAT2856 offers two high-performance lownoise MicroPower™ low dropout (LDO) linear regulators.| Part No. | AAT2856 |
|---|---|
| Datasheet | AAT2856 Download |
| Manufacturer |  AAT |
| Description | High Current Charge Pump |
| Buy | Stock & Price |
GENERAL DESCRIPTION
Six backlight LEDs can be driven at up to 30mA. AnalogicTech's AS2Cwire™ (Advanced Simple Serial Control™) single-wire interface is used to enable, disable, and set the current to one of 32 levels for the backlight. Backlight current matching is 1% for uniform display brightness. Both regulators use individual enable inputs and each will supply up to 200mA load current. LDO ground pin current is only 80µA, making the AAT2856 ideal for battery-operated applications. The AAT2856 is equipped with built-in short-circuit and over-temperature protection. The soft start circuitry prevents excessive inrush current at start-up and mode transitions.FEATURES
●● ChargePump™
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● Input Voltage Range: 2.7V to 5.5V Tri-Mode Charge Pump: — Drives up to Six Backlight LEDs — 32 Programmable Backlight Current Settings Ranging from 115µA to 30mA — 2MHz Switching Frequency Two Linear Regulators: — 200mA Output Current — 200mV Dropout Voltage — Output Voltage Adjustable from 1.2V...
