MAX256ASA/V+

Full Half-Bridge (H Bridge) Drivers Overview

The MAX256ASA/V+ is a half-bridge gate driver designed for primary-side transformer drive applications. It operates within a supply voltage range of 3 V to 5.5 V and supports junction temperatures from -40°C to +125°C. The device features an internal oscillator, a watchdog timer, and low on-resistance switches rated at 500 mΩ for both high-side and low-side outputs. It provides 1 A output current capability and includes protection against over-temperature, under-voltage lockout, and ESD.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Integrated primary-side H-bridge driver with internal oscillator and watchdog timer
• Low on-resistance power switches for efficient transformer driving
• Comprehensive protection including over-temperature, UVLO, and ESD safeguards

Full Half-Bridge (H Bridge) Drivers Applications

• Primary-side control for isolated DC-DC converters
• Flyback and forward converter topologies
• Isolated power supply designs requiring compact footprint

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify the specific suffix 'V+' indicates automotive qualification or extended temperature grading as per the official datasheet. Confirm RoHS compliance status and lead times directly with Analog Devices or authorized distributors, as availability may vary by region. Ensure the SOIC-8 package variant matches your PCB layout requirements before ordering.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component when designing isolated power supplies that benefit from primary-side regulation to reduce cost and complexity. The integrated watchdog and oscillator simplify design compared to discrete solutions. Ensure the load capacitance and transformer characteristics align with the 1 A drive capability and switching frequency limits specified in the electrical characteristics table.

Full Half-Bridge (H Bridge) Drivers Part Context

This part belongs to the MAX256 series of half-bridge drivers optimized for primary-side control. It replaces older discrete driver solutions by integrating the necessary logic, protection, and power stages into a single SOIC-8 package. The series is commonly used in consumer and industrial power adapters where isolation and efficiency are critical.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

Check for MAX256ASA+ (non-V+) if automotive qualification is not required. Verify pin compatibility with MAX256 variants before substitution.