A6727BTR

Overview

The A6727BTR is an automotive single-phase PWM controller designed for step-down DC-DC converters. It features integrated high-current drivers and a voltage mode error-amplifier within a compact SO-8 package. The device supports power input as low as 1.5 V and operates with supply voltages between 5 V and 12 V. It includes an internal 0.8 V reference providing ±1.5% output accuracy over temperature, with a fixed oscillator frequency of 300 kHz. Qualified to AEC-Q100 Grade 1 standards, it offers programmable overcurrent protection via low-side MOSFET RDS(on) monitoring, OV/UV protection, and FB disconnection safety.

Feature Summary

• Integrated high-current drivers enable direct control of external power stages without additional gate driver components.
• Sensorless overcurrent protection utilizes low-side MOSFET RDS(on) sensing to eliminate the need for external sense resistors.
• FB disconnection protection prevents excessive output voltages by detecting floating feedback pin conditions.

Applications

• Automotive single-phase step-down DC-DC converter implementations
• General automotive power management systems requiring AEC-Q100 compliance
• Compact power conversion modules utilizing SO-8 packaging constraints

Procurement Notes

Verify that the specific suffix 'TR' corresponds to the tape-and-reel packaging configuration required for automated assembly processes. Confirm that the component meets AEC-Q100 Grade 1 qualification requirements for your specific automotive application environment. Ensure compatibility with the specified 5 V to 12 V device supply voltage range during system design validation.

Selection Notes

Select this component when designing automotive-grade buck converters requiring integrated current sensing capabilities. It is suitable for applications needing a fixed 300 kHz switching frequency and precise voltage regulation with minimal external passive components. Consider the SO-8 package size if board space is limited and high-current driving integration is desired.

Part Context

The A6727BTR belongs to the A6727B series of single-phase PWM controllers manufactured by STMicroelectronics. This series is specifically engineered for automotive applications, offering robust protection features and high efficiency. The part integrates essential control logic, reference voltage, and protection mechanisms into a small footprint, simplifying the design of reliable automotive power supplies.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official manufacturer resources or authorized distributors for verified alternative components that match the AEC-Q100 Grade 1 qualification and functional specifications.