This reference design delivers a high efficiency LED driver circuit with dimming function using the boost converter TPS61021A. The PWM dimming method can be used in one or two cell AA battery input applications, and the analog dimming method can be used in one cell AA battery input applications. PMP15037 can realize the dimming function through the addition of several resistors and one MOSFET into the circuit, making it an cost-effective and high efficiency solution for LED driver applications.
- One Cell or Two Cell AA Battery Input Voltage Range
- Supports 0.5A Output Current for One Cell AA Battery Applications and Supports 1A Output Current for Two Cell AA Battery Applications
- Isolate the Input Battery from the Output Side when Shut Down
- High Efficiency and Small Solution Size