ACT4527数据手册Qorvo中文资料规格书

描述 Description

Qorvo's ACT4527 is a wide input voltage, high efficiency step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode.
ACT4527 has an interface for USB-PD control via a tri-state digital pin. Vout is 5.1 V if this pin is floating, Vout is 9.1 V when this pin's voltage is less than 0.8 V and Vout is 12.1 V when this pin's voltage is more than 2.0 V.
The product has accurate output current limits under constant current regulation. It provides up to 3.0 A output current at 125 kHz switching frequency. ACT4527 utilizes an adaptive drive technique to achieve good EMI performance while maintaining greater than 90% efficiency at full load for mini-size CLA designs. ACT4527 also has output short circuit protection with hiccup mode. The average output current is reduced to below 6 mA when output is shorted to ground. Other features include output over-voltage protection and thermal shutdown.
ACT4527 is available in a SOP-8EP package and requires very few external components for operation.

特性 Features

• USB-PD support
• Passes USB-IF certification: Test ID 1010060
• 40 V input voltage surge
• 4.5 to 36 V operational input voltage
• 5.1 / 9.1 / 12.1 V output with +/- 1% accuracy
• Up to 3.0 A output current
• Constant current regulation limit
• Hiccup mode protection at output short
• > 90% efficiency at full load
• 0.5 mA low standby input current
• 5.1 / 9.1 / 12.1 V Output over-voltage protection
• Cord voltage compensation
• Meets EN55022 Class B radiated EMI standard

应用 Application

• Car Chargers
• Cigarette Lighter Adapters (CLAs)
• Rechargeable Portable Devices
• CV/CC Regulation DC/DC Converters