Richtek RT9469WSC

Литий-ионный/полимерный2.275A-40°C ~ 85°C (TA)

Overview

The RT9469WSC is a switch-mode single cell Li-Ion/Li-Polymer battery charger for portable applications. It integrates a synchronous PWM controller, power MOSFETs, input current sensing and regulation, and high accuracy voltage regulation and charge termination circuits. Besides, the charging current is regulated through the integrated sensing resistors. The RT9469WSC also features USB On-The-Go (OTG) support. The RT9469WSC optimizes the charging task by using a control algorithm to vary the charge rate via different modes, including pre-charge mode, fast charge mode, and constant voltage mode. The key charge parameters are programmable via the I2C interface. The RT9469WSC resumes the charge cycle whenever the battery voltage falls below an internal recharge threshold, and automatically enters sleep mode when the input power supply is removed. Other features include under-voltage protection, over- voltage protection, thermal regulation and reverse leakage protection. The RT9469WSC is available in the small WL-CSP-25B 2.52x2.52 packages.

Features

Applications

• Opportunity charge
• Fast charge
• Fleet management
• Shop charger
• Golf carts
• Forklift
• Pallet jacks
• Personnel carriers
• Maintenance shops
• Rental fleets