LP3958集成电路（IC）的LED驱动器规格书PDF中文资料

LP3958属于集成电路（IC）的LED驱动器。由美国德州仪器公司制造生产的LP3958LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。

1FEATURES

2• High-Efficiency Boost Converter With

Programmable Output Voltage

• Two Individual Drivers for Serial Display

Backlight LEDs

• Three Drivers for Serial Keypad LEDs

• Automatic Dimming Controller

• Stand Alone Serial Leypad LEDs Controller

• Three General-Purpose IO Pins

• 25-Bump DSBGA Package: 2.54mm x 2.54mm

x 0.6mm

APPLICATIONS

• Cellular Phones and PDAs

• MP3 Players

• Digital Cameras

DESCRIPTION

LP3958 is a Lighting Management Unit for portable

applications. It is used to drive display backlight and

keypad LEDs. The device can drive 5 separately

connected strings of LEDs with high voltage boost

converter.

The keypad LED driver allows driving LEDs from high

voltage boost converter or separate supply

voltage.The MAIN and SUB outputs are high

resolution current mode drivers. Keypad LED outputs

can be used in switch mode and current mode.

External PWM control can be used for any selected

outputs.

The device is controlled through 2-wire low voltage I2C compatible interface that reduces the number of

required connections.

LP3958 is offered in a tiny 25-bump DSBGA

package.