ZXLD1101集成电路（IC）的LED驱动器规格书PDF中文资料

ZXLD1101属于集成电路（IC）的LED驱动器。由美台半导体制造生产的ZXLD1101LED 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。

DESCRIPTION

The ZXLD1101 is a PFM inductive boost converter designed for driving 2, 3 or 4 series connected white LEDs from a Li-Ion cell and up to 8 LEDs from a 5V supply. The device operates from an input supply of between 2.5V and 5.5V and provides an adjustable output current of up to 50mA.

The ZXLD1101 includes the output switch and peak current sense resistor, and can operate with a maximum output voltage of 28V.

Quiescent current is typically 60μA and a shutdown function is provided to reduce this current to less than 500nA in the off state.

Output current can be adjusted by applying a PWM control signal to the Enable pin. Depending upon the control frequency, this will provide either a continuous or a chopped output current. The PWM filter components are contained within the chip.

The device is assembled in the TSOT23-5 pin package with 1mm maximum height profile.

ADVANCED FEATURES

• True Analog Dimming via PWM

FEATURES

• 1mm height profile TSOT23-5 pin package

• Internal PWM filter for flicker free output

• High efficiency (80 typ)

• Wide input voltage range: 2.5V to 5.5V

• Up to 50mA output current

• Low quiescent current: (60μA typ)

• 500nA maximum shutdown current

• Up to 1MHz switching frequency

• Low external component count

• Inherently matched LED currents

APPLICATIONS

• Mobile phones

• Digital cameras

• PDAs

• LCD modules

• Portable internet appliances

• Palmtop computers