ACT4529数据手册Qorvo中文资料规格书

描述 Description

Qorvo's ACT4529 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.
ACT4529 has built-in QC2.0 decoding to provide 5.1 / 9.1 / 12.1 V outputs as requested by attached portable devices. It also supports Apple, Samsung and BC1.2 devices to charge at full current rate. The product 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 to meet MFi specification. It provides up to 3.0 A output current at 125 kHz switching frequency. ACT4529 utilizes an adaptive drive technique to achieve good EMI performance while maintaining greater than 90% efficiency at full load for mini-size CLA designs. ACT4529 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.
ACT4529 is available in a SOP-8EP package and requires very few external components for operation.

特性 Features

• Quick Charge 2.0 certified by Qualcomm® and UL
• UL Certificate No. 4787083099-1
• Passes Apple MFi test
• 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
• QC2.0 decoding + USB auto-detect + USB-PD Type-C support
• Supports Apple 2.4 A, Samsung and BC1.2
• Hiccup mode protection at output short
• > 90% efficiency at full load
• 0.5 mA low standby input current
• 5.7 / 10.1 / 13.5 V output over-voltage protection for 5.1 / 9.1 / 12.1 V Outputs
• Cord voltage compensation
• Meets EN55022 Class B radiated EMI standard
• 8 kV ESD HBM protection on DP and DM

应用 Application

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