AS1181 datasheet(4/92 Pages) AMSOSRAM

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AS1181

General description

Datasheet • PUBLIC • Document Feedback

DS001139 • v3-00 • 2026-Apr-01

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AS1181 8-channel LED/VCSEL driver with

enhanced safety features

General description

AS1181 is an 8-channel highly integrated self-contained LED/VCSEL driver for near to eye

applications such as Augmented Reality (AR) and Virtual Reality (VR) glasses. The device

integrates extended safety monitoring functions to ensure eye safe operation. These safety

monitors include LED short detection, LED open detection, LED overcurrent protection, LED

on time monitor as well as temperature shutdown and a built-in-self test (BIST).

The device is configurable via a serial wire interface (I²C or I3C) with interrupt and provides

two Strobe/PWM inputs to synchronize illumination with up to two external cameras for

binocular eye tracking systems.

The LED current is individually programmable per channel, and it can drive up to 2 IR LEDs

per current sink with a minimum ON time of 10µs and a maximum current of 66mA per

channel.

General purpose LED driving applications can be supported via a direct PWM input applied at

the Strobe pin and it can drive RGB or white LEDs considering a maximum forward voltage of

5V.

The device comes in a tiny wafer-level-chip-scale package (WLCSP) with 0.4mm pitch and

dimensions of 2.9mm x 1.75mm x 0.5mm (L x W x H).

AS1181 Datasheet(PDF) 4 Page - ams-OSRAM AG