ALED1642GW:16 Channels LED driver with error detection, current gain control and 12/16 bit-PWM brightness control for automotive applications

The ALED1642GW is a monolithic, low voltage, low current power 16-bit shift register designed for LED panel displays. The ALED1642GW guarantees 20 V output driving capability allowing the user to connect several LEDs in series. In the output stage, sixteen regulated current sources provide from 3 mA to 40 mA constant current to drive the LEDs. The current is programmed through an external resistor and can be adjusted by a 7-bit current gain register in two subranges. The brightness can be adjusted separately for each channel through 12/16-bit grayscale control.

Programmable turn-on and turn-off time (four different values available) improves the low noise generation performance of the system.

Open/short error detection mode is available in the ALED1642GW. The auto power-shutdown and auto power-on features (selectable) allow the device to save power without external intervention.

Thermal management includes an overtemperature data alert and output thermal shutdown (170 °C). The high clock frequency is up to 30 MHz and it makes the device suitable for high data rate transmission. A selectable gradual output delay reduces the inrush current, whereas the selectable SDO synchronization feature works when the device is used in daisy-chain configuration. The supply voltage range is between 3 V and 5.5 V.

Key Features

  • AECQ100 qualification
  • 16 constant current output channels
  • Output current: from 3 mA to 40 mA
  • Current programmable through external resistor
  • 7-bit global current gain adjustment in two ranges
  • 12/16-bit PWM grayscale brightness control
  • Programmable output turn-on/off time
  • Error detection mode (both open and shorted-LED)
  • Programmable shorted-LED detection thresholds
  • Auto power saving/auto-wakeup
  • Selectable SDO synchronization on the CLK falling edge
  • Gradual output delay (selectable)
  • Supply voltage: 3 V to 5.5 V
  • Thermal shutdown and overtemperature alert
  • Up to 30 MHz 4-wires interface
  • 20 V current generator rated voltage
Product Specifications
DescriptionVersionSize
DS10104: 16 channel LED driver with error detection, current gain control and 12/16-bit PWM brightness control for automotive applications4.02 MB
Application Notes
DescriptionVersionSize
AN4374: The LED1642GW and ALED1642GW start-up guide2.01 MB
Flyers
DescriptionVersionSize
LED array drivers for automotive applications1.01 MB
LED drivers for automotive applications1.0707 KB
Brochures
DescriptionVersionSize
Brochure Power management guide05.20164 MB
Solution Evaluation Tools
Part NumberManufacturerDescription
STEVAL-ILL073V1STRGB LED driver for automotive lighting based on ALED1642GW and STM8A
Sample & Buy
Part NumberQuantityUnit Price (US$) *PackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)ECCN (EU)ECCN (US)Country of Origin
ALED1642GWXTTR10000.768HTSSOP24Tape And Reel-40150NECEAR99MALAYSIA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
ALED1642GWXTTRHTSSOP24AutomotiveEcopack2md_yo-wspc-htssop-wspc-24-wspc-4.4_b9youi73aca.pdf
md_yo-wspc-htssop-wspc-24-wspc-4.xml
16 channel LED driver with error detection, current gain control and 12/16-bit PWM brightness control for automotive applications ALED1642GW
The LED1642GW and ALED1642GW start-up guide ALED1642GW
The LED1642GW and ALED1642GW start-up guide ALED1642GW
The LED1642GW and ALED1642GW start-up guide ALED1642GW
Very low drop voltage regulators with inhibit KFXX
md_yo-wspc-htssop-wspc-24-wspc-4.4_b9youi73aca.pdf ALED1642GW
md_yo-wspc-htssop-wspc-24-wspc-4.xml PM8801