A7987 - STMicroelectronics

A7987 61V 3A asynchronous step-down switching regulator

The A7987 is a step-down monolithic switching regulator that can deliver up to 3 A DC. The adjustable output voltage ranges from 0.8 V to VIN. The wide input voltage range and the almost 100% duty cycle capability meet the fail-safe specifications for automotive systems. The embedded switch-over feature on the VBIAS pin maximizes efficiency at light load. Th.

Features

• 3 A DC output current
• 4.5 V to 61 V operating input voltage
• Adjustable fsw (250 kHz to 1.5 MHz)
• Output voltage adjustable from 0.8 V to VIN
• Synchronization
• Adjustable soft-start time
• Adjustable current limitation
• VBIAS improves efficiency at light load
• PGOOD open collector output
• Digital frequency fold-back in short-circuit
• Auto-recovery thermal shutdown
• Qualified following AEC-Q100 requirements Applications
• Designed for 24 V automotive battery systems
• Industrial and commercial vehicles Description The A7987 is a step-down monolithic switching regulator that can del.