Analog Devices AD8240 Manuals

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. VO is turned on when the PWM input is high and turned off when the input is low. The product also provides LED on/off detection and latch-off overcurrent protection.

This document describes the features and characteristics of the AD8240 LED driver/monitor from Analog Devices, including PWM input for LED brightness control, open LED detection, latch-off overcurrent protection, and constant voltage regulated output.