Wide Input Voltage Range, High Efficiency Fault Tolerant LED Driver

A8514

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These parts are in production but have been determined to be LAST TIME BUY. The A8514 is a multi-output white LED driver for small LCD backlighting, integrating a boost converter with internal switch and four current sinks (up to 320mA). It operates from 5V to 40V, supports external P-FET input disconnect, offers comprehensive protection, and features a synchronization pin for AM radio band avoidance.

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Product Details

Top Features

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 protection
LED current of 80 mA per channel
Drives up to 12 series LEDs in 4 parallel strings
0.7% to 0.8% LED to LED matching accuracy
PWM and analog dimming inputs
5000:1 PWM dimming at 200 Hz
Provides driver for external PMOS input disconnect switch
Extensive protection against:
- Shorted boost switch or inductor
- Shorted FSET or ISET resistor
- Shorted output
- Open or shorted LED pin
- Open boost Schottky
- Overtemperature (OTP)