ams AS1163 Automotive 9-channel Stand-Alone Intelligent LED Driver IC

Description

Product status: Pre-Production
AS1163 is a mixed signal silicon device optimized for automotive dynamic lighting applications (interior, exterior, smart surface etc.). The basic purpose of AS1163 is to drive 9 LEDs organized in 3 channel triplets (RGB) or simply 9 single-color LEDs with an independent PWM dimming dynamic range up to 16 bits. AS1163 is often addressed with a different name: “SAID”, an acronym which stands for Stand-Alone Intelligent Driver.

A daisy chain configuration of multiple AS1163 devices will enable cost effective implementation of complex dynamic lighting effects. AS1163 supports single layer slim PCB designs.The communication protocol supported by AS1163 (OSP: Open System Protocol) is fully compatible with the ams OSRAM OSIRE E3731i. AS1163 will support additional features such as I²C gateway, parallel connection, power-rail feedback, analog readout. Each AS1163 device in the chain will be usable by the MCU to read and write an external I²C device, e.g. EEPROM, temperature sensor, Ambient Light Sensor.

User guide

Details

Slim QFN16 (3 × 3 mm) package
3 × RGB channels (9 drivers: 3 × 48mA, 6 × 24mA) per IC
Multiple current settings: 1.5, 3, 6, 12, 24, 48 mA
Output clustering options (up to 288mA)
I²C gateway optionally configurable
Supporting OSP (Open System Protocol): auto-addressing 2.4 Mbit/s 2-wire daisy chain protocol; up to 1000 nodes; CRC protected communication
14-bit PWM resolution @ 1000 Hz; 15-bit PWM resolution @ 500 Hz; 16-bit PWM resolution @ equivalent dynamic range
Enhanced Driving Mode (Anti-Flickering Dithering Mode)
Star network implementation
Hardware and software sync
Integrated 10-bit ADC + MUX
Open/short/communication diagnosis
Overvoltage/overtemperature protection
Built-in temperature sensor
Multicast with up to 15 groups