RT9519BGQW

Overview

The RT9519BGQW is a single-cell lithium-ion battery charger IC manufactured by Richtek USA Inc. It utilizes a 20-WQFN (3x3) surface-mount package and operates within a temperature range of -40°C to +85°C. The device supports a maximum charging current of 1.2A and functions with a supply voltage up to 6V. Key electrical parameters include a battery pack voltage of 4.2V and programmable constant-current charging characteristics.

Feature Summary

• Integrates timer-based charge termination for automated operation
• Includes overvoltage fault protection mechanisms
• Supports programmable constant-current charging profiles

Applications

• Single-cell lithium-ion battery charging in portable devices
• Power management systems for handheld electronics
• Battery management modules requiring compact form factors

Procurement Notes

Verify the specific suffix 'BGQW' against the manufacturer's official datasheet to confirm pinout, thermal pad configuration, and RoHS compliance status. Ensure the ordering part number matches the exact package variant required for your PCB layout. Cross-reference with authorized distributors to validate authenticity and supply chain integrity before finalizing procurement orders.

Selection Notes

Select this component when designing circuits for single-cell lithium-ion batteries requiring a compact solution. The 20-WQFN package suits space-constrained applications. Verify that the input voltage does not exceed 6V and that the system requires a maximum charging current of 1.2A. Confirm compatibility with the desired thermal dissipation requirements for the WQFN-40 style footprint.

Part Context

This component belongs to Richtek's portfolio of power management integrated circuits focused on battery charging solutions. It is categorized under PMICs designed for consumer electronics and mobile devices. The RT9519 series addresses the need for efficient, small-footprint charging management in portable hardware ecosystems.

Replacement Considerations

The RT9519AGQW is documented as a parameter-equivalent substitute. Verify functional equivalence regarding pinout and electrical specifications before implementation.