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ACT4523AYH-T

Model Number: ACT4523A

DC-DC Non-Sync Step Down Conve from Qorvo

40 V, 3.5 A Sensorless CC/CV Step-Down DC/DC Converter

Status: Discontinued | Data Sheet:

| RoHS Compliance: Rohs Compliant

Overview

Qorvo’s ACT4523A is a wide input voltage, high efficiency Active CC step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. ACT4523A provides up to 3.5 A output current at 250 kHz switching frequency.

Active CC is a patented control scheme to achieve highest accuracy with sensorless constant current control. Active CC eliminates the expensive, high accuracy current sense resistor, making it ideal for battery charging applications and adaptors with accurate current limit.

The product achieves higher efficiency than traditional constant current switching regulators by eliminating its associated power loss on the sensing resistor. ACT4523A provides an OVP pin for output over-voltage protection. Other protection features include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuit.

ACT4523A is available in a SOP-8EP package and requires very few external components for operation.

Key Features

40 V input voltage surge
36 V steady state operation
Up to 3.5 A output current
Output voltage up to 12 V
250 kHz switching frequency
91% efficiency (Vout = 5 V @ 3.5 A at Vin = 12 V)
Patented Active CC sensorless constant current control
Resistor programmable
+/- 6.5% CC accuracy
2% feedback voltage accuracy
Advanced feature set

Typical Applications

Car Chargers / Adapters
Rechargeable Portable Devices
General Purpose CC/CV Power Supplies

Part Number: ACT4523AYH-T
Manufacturer: Qorvo
Topology: Step-Down
Input Voltage: 10 - 40 V
Max Output Current: 3.5 A
Frequency: 250 kHz
Features: Cable Compensation, Sensorless CC Control
Package Type: SOP-8EP

Tariff Notice

Product may be included on Section 301 Tariff List and subject to applicable tariff charges.

Part Function	Part Number	Description
Evaluation Board	EA4523AYH Qorvo	ACT4523A EVK

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Product Specifications For ACT4523AYH-T DC-DC Non-Sync Step Down Converter

Part Number: ACT4523AYH-T Manufacturer: Qorvo Product Description: 40 V, 3.5 A Sensorless CC/CV Step-Down DC/DC Converter

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Tariff Notice

Product may be included on Section 301 Tariff List and subject to applicable tariff charges.

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ACT4523AYH-T

DC-DC Non-Sync Step Down Conve from Qorvo

40 V, 3.5 A Sensorless CC/CV Step-Down DC/DC Converter

Technical Inquiry Request for ACT4523AYH-T DC-DC Non-Sync Step Down Converter

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ACT4523AYH-T

DC-DC Non-Sync Step Down Conve from Qorvo

40 V, 3.5 A Sensorless CC/CV Step-Down DC/DC Converter

Technical Inquiry Request for ACT4523AYH-T DC-DC Non-Sync Step Down Converter

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