A6727 Datasheet, PDF (1/29 Pages) STMicroelectronics – Adjustable output voltage

A6727
Single-phase PWM controller for automotive applications
SO-8
Features
• AEC-Q100 compliant
• Flexible power supply from 5 V to 12 V
• Power conversion input as low as 1.5 V
• 1% 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 R_DS(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 A6727 is a single-phase step-down controller
with integrated high-current drivers that provides
Datasheet - production data
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 V_IN as low as 1.5 V and device
supply voltage in the range of 5 V to 12 V.
The A6727 provides simple control loop with
voltage mode error-amplifier. The integrated 0.8 V
reference allows the regulation of output voltages
with ±1% accuracy over line and temperature
variations. The oscillator is internally fixed to 300
kHz.
The A6727 provides programmable overcurrent
protection as well as over and undervoltage
protection. The current information is monitored
across the low-side MOSFET R_DS(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.
Table 1. Device summary
Order code
Package
Packaging
A6727
A6727TR
SO-8
Tube
Tape and reel
July 2013
This is information on a product in full production.
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