A8521 Datasheet High Efficiency Fault Tolerant LED Driver

Manufacturer: Allegro MicroSystems

Datasheet Details

Part number	A8521
Manufacturer	Allegro MicroSystems
File Size	1.26 MB
Description	High Efficiency Fault Tolerant LED Driver
Download	A8521 Download (PDF)

The A8521 is a multi-output white LED driver for small-size LCD backlighting.

It integrates a current-mode boost converter with internal power switch and four current sinks.

The boost converter can drive up to 48 LEDs, 12 LEDs per string, at 80 mA.

A8521 Wide Input Voltage Range, High Efficiency Fault Tolerant LED.

AEC-Q100 Qualified.
Wide input voltage range of 5 to 40 V for start/stop, cold crank and load dump requirements.
Fully integrated LED current sinks and boost converter with 60 V DMOS.
Sync function to synchronize boost converter switching frequency up to 2.3 MHz, allowing operation above the AM band.
Excellent input voltage transient response.
Single resistor primary OVP minimizes VOUT leakage.
Internal secondary OVP for redundant p.

Part Number	Description
A8522	Multi-Channel LED Driver
A8502	High Efficiency Fault Tolerant LED Driver
A8503	WLED/RGB Driver
A8504	WLED/RGB Backlight Driver
A8508	8-Channel Fault Tolerant LED Driver
A8509	High Efficiency 4-Channel Fault Tolerant LED Driver
A8510	High Efficiency Fault Tolerant LED Driver
A8511	4-Channel x 150 mA WLED/RGB Driver
A8514	High Efficiency Fault Tolerant LED Driver
A8515	Fault Tolerant LED Driver