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Features

? AEC Q100 qualified grade 1

? Flexible power supply from 5 V to 12 V

? Power conversion input as low as 1.5 V

? ± 1.5 output voltage accuracy

? High-current integrated drivers

? Adjustable output voltage

? 0.8 V internal reference

? Simple voltage mode control loop

? Sensorless and programmable OCP across

? Low-side RDS(on)

? Oscillator internally fixed at 300 kHz

? Internal soft-start

? LS-less to manage pre-bias startup

? Disable function

? OV/UV protection

? FB disconnection protection

? SO-8 package

Applications

? Dedicated to automotive applications

Description

The A6727B is a single-phase step-down controller with integrated high-current

drivers that provides complete control logic, protection and reference voltage to

realize a general DC-DC converter by using a compact SO-8 package. The device

flexibility allows the management of conversions with power input VIN as low as 1.5 V

and device supply voltage in the range of 5 V to 12 V.

The A6727B provides simple control loop with voltage mode error-amplifier. The

integrated 0.8 V reference allows the regulation of output voltages with ±1.5

accuracy over temperature variations. The oscillator is internally fixed to 300 kHz.

The A6727B provides programmable overcurrent protection as well as over and

undervoltage protection. The current information is monitored across the low-side

MOSFET RDS(on) saving the use of expensive and space-consuming sense resistors

while output voltage is monitored through FB pin.

FB disconnection protection prevents excessive and dangerous output voltages from

floating FB pin.