LM3699是TI公司的一款背光产品，LM3699是LM3699 High-Efficiency White LED Driver，本页介绍了LM3699的产品说明、应用、特性等，并给出了与LM3699相关的TI元器件型号供参考。
LM3699 - LM3699 High-Efficiency White LED Driver - 背光 - LED驱动器 - TI公司（Texas Instruments，德州仪器）
- Drives Parallel High-Voltage LED Strings for Display or Keypad Lighting
- Boost Converter up to 90% Efficiency
- Four User-Selectable Full-Scale Current Settings (20.2 mA, 18.6 mA, 17.0 mA, 15.4 mA)
- Quick-Dimming Enable Terminal (ILOW)
- Simple PWM Duty Cycle Control
- 24-V Overvoltage Protection Threshold
- Fixed 1-MHz Switching Frequency
- Integrated 1-A/40-V MOSFET
- Three Current Sink Terminals
- Adaptive Boost Output to LED Voltages
- Thermal Shutdown Protection
- 29-mm2 Total Solution Size
- Power Source for Smart Phone Illumination
- Display or Keypad Illumination
The LM3699 is a three-string, high-efficiency, PWM-controlled power source for display backlight or keypad LEDs in smartphone handsets. The high-voltage inductive boost converter with integrated 1-A, 40-V MOSFET provides the power for three series LED strings. The boost output automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency.
The ILOW terminal provides a method to quickly reduce LED brightness during camera flash operation.
The LM3699 has integrated overvoltage, overcurrent, and thermal protection.
The device operates over a 2.7-V to 5.5-V input voltage range and a −40°C to 85°C temperature range.
| ORDER NUMBER | PACKAGE | BODY SIZE |
|---|---|---|
| LM3699YFQ | DSBGA (12) | 1,64 mm x 1,29 mm |
