Richtek RT9458WSC

锂离子/聚合物1.55A-40°C ~ 85°C（TA）

Overview

The RT9458WSC 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, high accuracy voltage regulation and charge termination circuits. The RT9458WSC also features USB On-The-Go (OTG). The RT9458WSC 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 can be programmed via the I2C interface. The RT9458WSC resumes the charge cycle whenever the battery voltage falls below an internal 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 RT9458WSC is available in the small WL-CSP-20B 2.1x1.87 (BSC) package.

Features

Tape & Reel (TR) Package
Battery pack voltage of 4.44V Max
20-UFBGA, WLCSP package

Surface Mount Mounting Type

Applications

There are a lot of Richtek USA Inc.
RT9458WSC Battery Chargers ICs applications.

• Pallet jacks
• Personnel carriers
• Maintenance shops
• Rental fleets
• Truck dealers
• Floor scrubber
• Material handling
• Man lift
• Boat
• Cellphones