MAX20092ATJ/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.

MAX20092 12-Switch Matrix Manager IC

Analog Devices Inc. MAX20092 12-Switch Matrix Manager IC for automotive lighting applications includes a 12-switch array for bypassing individual LEDs in a single- or dual-string application. The device features 12x individually controlled N-channel MOSFET switches rated for 10V with an on-resistance of 0.100Ω. A single current source can power all the LEDs connected in series. Individual LEDs can be dimmed by turning the bypass switches across each LED on and off. The IC can also be configured in two strings with six switches in series per string or four strings with three switches per string. A separate current source powers each string. Each switch can be connected across one or two LEDs in series. The IC also includes an internal charge pump that provides power for the gate drive of each LED bypass switch. The low on-resistance of the switches minimizes conduction loss and power dissipation.

Optical ADI SLP