AD8240集成电路（IC）的LED驱动器规格书PDF中文资料

AD8240属于集成电路（IC）的LED驱动器。由亚德诺半导体技术有限公司制造生产的AD8240LED 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。

GENERAL DESCRIPTION

The AD8240 LED driver/monitor, in combination with an external transistor, supplies a constant 12 V to drive LED lamps. This allows cost-effective LED lamp monitoring and short-circuit protection. The output is regulated at 12 V when the supply voltage is between 12.5 V and 27 V.

A CMOS compatible, level-dependent, digital input can be used for PWM control of the LED brightness. VOis turned on when the PWM input is high and turned off when the input is low. The AD8240 is designed to work with a PWM frequency up to 500 Hz, and a typical PWM range from 5 to 95.

FEATURES

PWM input for LED brightness control

Open LED detection

Latch-off overcurrent protection

Constant voltage regulated output

Supply range: 9 V to 27 V

Regulated voltage range: 12.5 V to 27 V

Operating current: 300 µA

Shutdown current: 10 µA

Temperature range −40°C to +125°C

8-lead MSOP package