A8521 - High Efficiency Fault Tolerant LED Driver

Product Overview

Allegro

Part number	A8521
Manufacturer	Allegro
File Size	1.26 MB
Description	High Efficiency Fault Tolerant LED Driver
Datasheet	A8521 Datasheet
Additional preview pages of the A8521 datasheet.

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.

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.

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Published: Jan 8, 2025 |