MAX25611AATC/VY+

IS32LT3175N/P Single-Channel Linear LED Drivers

ISSI IS32LT3175N/P Single-Channel Linear LED Drivers come with fade in/out and PWM dimming. The regulators serve as a stand-alone LED driver-configurable from 20mA to 150mA with external resistors, no microcontroller is necessary. A logic level “courtesy light” signal from the PWM pin can be interfaced to precisely drive the LED channel. The IS32LT3175P obtains a positive polarity PWM signal. In addition, the IS32LT3175N obtains a negative polarity PWM signal. The regulator integrates a 63-step fade-in and fades out the algorithm (Gamma correction). This causes the output LED current to increasingly rise up to the full source value after the EN pin is pulsed.

MAX25611 Automotive High-Voltage LED Controllers

Analog Devices MAX25611 Automotive High-Voltage High-Brightness LED Controllers are ideal for automotive front light applications such as high beam, low beam, daytime running light (DRL), turn indicator, fog light, and other LED lights. The MAX25611 Controllers feature an input voltage from 5V to 36V and can drive a string of LEDs with a maximum output voltage of 65V. The MAX25611A/MAX25611B offers high-side current sensing that senses output current at the high side of the LED string. High-side current sensing is required to protect against shorts and is the most flexible scheme for driving LEDs, allowing boost, high-side buck, SEPIC mode, or buck-boost mode configurations. The PWM input provides LED dimming ratios of up to 5000:1, and the REFI input features additional analog dimming capability in the MAX25611.

Optical ADI SLP