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ISL78083ARZ is a versatile multi-rail power IC comprised of a primary high voltage synchronous buck regulator, two secondary low voltage synchronous buck regulators, and an LDO regulator.

Feature

VIN operating range from 4.0V to 42V

Start range: 4.5V to 42V

Fixed switching frequency: 2.2MHz with optional pseudo-random spread spectrum

Three synchronous bucks with internal compensation and one LDO

Buck1 output range: 3.3V to 5.05V

Buck2 output range: 1.0V to 3.3V

Buck3 output range: 1.0V to 3.3V

LDO4 output range: 2.8V to 3.4V

Output UV/OV thresholds, OTP: ±4%, ±6%, ±8%, ±12%

OTP power up/down sequence and delay

Optional output discharge on Buck2, Buck3, and LDO4

Current at VIN input under shutdown: <1µA typical

Protection features

Input voltage UVLO

Output OV/UV

Positive and negative current limits on bucks

Overcurrent protection on internal and output LDOs

Fail-safe controller

CRC of OTP registers

OTP hiccup or latch-off fault response

Applications

Rear and surround view HD automotive cameras

Driver monitoring cameras

HD dash cam

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