LM3699 - LM3699 High-Efficiency White LED Driver

LM3699是TI德州仪器公司的一款背光产品，LM3699是LM3699 High-Efficiency White LED Driver，本站介绍了LM3699的封装应用图解、特点和优点、功能等，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 - 德州仪器

产品特性

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

产品应用

Power Source for Smart Phone Illumination
Display or Keypad Illumination

产品说明

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.

Device Information

ORDER NUMBER	PACKAGE	BODY SIZE
LM3699YFQ	DSBGA (12)	1,64 mm x 1,29 mm

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