AAT3167 Description
The AAT3167 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 AAT3167 is capable of driving five LEDs for a total of 135mA from a 2.7V to 5.5V input. The current sinks may be operated individually or in parallel for driving higher current LEDs.
AAT3167 Key Features
- VIN Range: 2.7V to 5.5V
- Fully Programmable Current with Single Wire
- 16-Step Logarithmic Scale
- 14/18/27mA Max Current
- Four Low-Current Settings Down to 115µA
- Low IQ (50µA) for Single-Channel, Low-Current
- Tri-Mode 1X, 1.5X, 2X Charge Pump for Maximum
- Drives Up to Five LEDs
- Individual Main-Sub (4-1) Group Control
- No Inductors, Low Noise Operation
AAT3167 Applications
- VIN Range: 2.7V to 5.5V
- Fully Programmable Current with Single Wire