TPS60251
FEATURES
- 3.0-V to 6.0-V Input Voltage Range
- ×1 and ×1.5 Charge Pump
- Fully Programmable Current with I2C
- 64 Dimming Steps with 25m A Maximum (Sub and Main Display Banks)
- 4 Dimming Steps with 80m A Maximum (DM5 for Auxiliary Application)
- 2% Current Matching for Sub LEDs at Light Load Condition (Each 100µA)
- 750-k Hz Charge Pump Frequency
- Continuous 230-m A 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
APPLICATIONS
- Cellular Phones
- PDA, PMP, GPS (Up To 4 Inch Display)
- Multidisplay Handheld Devices
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...
