描述 Description

Qorvo's ACT4070B is a wide input voltage step-down DC/DC converter that provides up to 3 A output current at 300 kHz switching frequency.
ACT4070B is a replacement part for ACT4070 with advanced features such as lower standby current and higher light load efficiency. ACT4070B can be dropped into ACT4070 socket with only the feedback resistance value changed.
ACT4070B's protection features include cycle-by-cycle current limit, thermal shutdown and frequency foldback at over-current and short circuit. The device is available in a SOP-8EP package and requires very few external devices for operation.

特性 Features

? 3 A output current
? Up to 95% efficiency
? 6 to 30 V input range
? 100 μA shutdown supply current
? 4 mA standby input current
? 300 kHz switching frequency
? Output voltage up to 12 V
? Cycle-by-cycle current limit protection
? Thermal shutdown protection
? Internal soft start function
? Frequency foldback at short circuit
? Stability with wide range of capacitors (including low ESR ceramic capacitors)

應(yīng)用 Application

? TFT LCD Monitors
? Portable DVDs
? Car-Powered or Battery-Powered Equipment
? Set-Top Boxes
? Telecom Power Supplies
? DSL and Cable Modems and Routers