LP5522开发板套件编程器的评估板-LED驱动器规格书PDF中文资料

LP5522属于开发板套件编程器的评估板-LED驱动器。由德州仪器制造生产的LP5522评估板 - LED 驱动器LED 驱动器评估板是带有元器件的电路板，用于提供特定电路或器件的工作实例。该系列评估板提供一个 LED 驱动器实例，用于可调节闪烁、模拟亮度、背光、双极开关、升压转换器、亮度控制、相机闪光灯、可调光、恒流和 RGB 控制，以及更多其他应用。

1FEATURES

2• Programmable Blinking Sequence

– 1 to 3 Programmable Pulses

– 1 ms to 255 ms LED on Time

– 10 ms to 2500 ms LED Off Time

– Single or Continuous Run of Programmed

Blinking Sequence

• Constant Current High Side Output Driver

• Adjustable Current with External Resistor

• 0.2 μA Typical Shutdown Current

• Autonomous Operation without External Clock

• DSBGA-6 Package with 0.4 mm Pitch:

– 1.215 mm x 0.815 mm x 0.6 mm (LxWxH)

APPLICATIONS

• Indicator Lights

• Phone Cosmetics

• Toys

DESCRIPTION

The LP5522 is a simple single wire programmable

LED controller in six bump DSBGA package. It

provides constant current flow through high side

driver. Output current can be set from 1 mA to 20 mA

by using an external resistor on the ISET pin. If no

external resistor is used, output current is set to 5 mA default current. The LP5522 is controlled using only

one signal. The signal controls either directly the LED

driver or it launches previously programmed blinking

sequence.

The LP5522 works autonomously without a clock

signal from the master device. Very low LED driver

headroom voltage makes possible to use supply

voltages close to LED forward voltage. Current

consumption of the LP5522 is minimized when LED

is turned off and once controller is disabled all

supporting functions are also shut down. Very small

DSBGA package together with minimum number of

external components is a best fit for handheld

devices.