JW5520S - Synchronous Step-up Boost Converter

Datasheet Summary

Description

The JW®5520S is a synchronous high-efficiency, boost converter with true output disconnection.

The device adopts constant-off-time (COT) control topology.

The device can start up from an input voltage as low as 1.2V.

Features

1.2V Minimum Start-up Input Voltage.
1.2V to 5.5V Input Voltage Range.
2.5V to 5.5V Output Voltage Range.
Support 5V/3.5A Output from 2.8V Input.
Up to 9A Programmable Switch Peak Current Limit.
Programmable Average Load Current Limit.
600kHz Pseudo-Constant Frequency Switching.
Low Quiescent Current:.

JoulWatt

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Datasheet Details

Part number	JW5520S
Manufacturer	JoulWatt
File Size	1.10 MB
Description	Synchronous Step-up Boost Converter
Datasheet	JW5520S Datasheet
Additional preview pages of the JW5520S datasheet.

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Full PDF Text Transcription

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JW5520S Current Programmable, CC/CV, Synchronous Step-up Boost Converter with Output Disconnect Preliminary Specifications Subject to Change without Notice DESCRIPTION The JW®5520S is a synchronous high-efficiency, boost converter with true output disconnection. The device adopts constant-off-time (COT) control topology. The device can start up from an input voltage as low as 1.2V. The input switch peak current can be programmable up to 9A and the output average load current limit can be programmable by external resistors. The typical operation frequency of JW5520S is 600kHz, which allows smaller inductor and capacitors to achieve a small solution size. During light load condition, PFM is engaged to maintain the maximum efficiency.

Published: Dec 6, 2025 |