MIC2846A Overview
The MIC2846A is a high efficiency White LED (WLED) driver featuring two low quiescent current LDOs. It is designed to drive up to six LEDs and greatly extend battery life for portable display backlighting and keypad backlighting in mobile devices. The MIC2846A architecture provides the highest possible efficiency by eliminating switching losses present in traditional charge pumps or inductive boost circuits.
MIC2846A Key Features
- High Efficiency (no Voltage Boost losses)
- Dynamic Average Matching™ (DAM™)
- Single wire digital control
- Input voltage range: 3.0V to 5.5V
- Dropout of 40mV at 20mA
- Matching better than ±1.5% (typical)
- Current accuracy better than ±1.5% (typical)
- Maintains proper regulation regardless of how many channels are utilized LDOs
- Very low ground current
- Typical 35µA