TPS60251 Overview
Description
The TPS60251 is a high efficiency, constant frequency charge pump DC/DC converter that uses a dual mode 1× and 1.5× conversion to maximize efficiency over the input voltage range. It drives up to five white LEDs for a main display and up to two white LEDs for a sub display with regulated constant current for uniform intensity.
Key Features
- 3.0-V to 6.0-V Input Voltage Range
- ×1 and ×1.5 Charge Pump
- 2% Current Matching for Sub LEDs at Light Load Condition (Each 100µA)
- 750-kHz Charge Pump Frequency
- Continuous 230-mA Maximum Output Current
- Auto Switching Between ×1 and ×1.5 Mode for Maximum Efficiency
- Built-in Soft Start and Current Limit
- Hardware Enable/Disable
- Open Lamp Detection
- 24-Pin 4mm x 4mm QFN
