100V Input,5A Output, Synchronous Step-down Controller

Zincup

Features

l 9V to 100V input voltage range

l 5A continuous output current

l 96% Peak Efficiency

l 600µA operating quiescent current

l Peak Current mode control

l 150 kHz Fixed Frequency

l Internal compensation for ease of use

l Up to 91% duty cycle

l 0.8V voltage reference

l 10µA shutdown current

l 150ms Hiccup mode short circuit protection Function

l Thermal shutdown Function  

l QFN-20 package

Applications

l Charger in vehicle

l Battery Chargers

l Power adapter

Description

The MST8A50QN is a high voltage, synchronous step-down controller operates over a wide range input voltage 9V to 100V.

The MST8A50QN delivers 5A continuous load current with up to 96% efficiency.

The MST8A50QN operates with fixed frequency peak current control with built-in compensation eliminates the need for external components.

Cycle-by-cycle current limit in high-side MOSFET protects the converter in an overload condition. Hiccup mode protection is triggered if the over-current condition has persisted for longer than the present time.

The MST8A50QN exhibits protection features

that protect the load from faults like under-

voltage,over-current and over-temperature.

The MST8A50QN is available in an QFN-20.

Device Information

PART NUMBER	PACKAGE	BODY SIZE (NOM)
MST8A50QN	QFN-20	5mm*5mm