PSC5425 - Prisemi

PSC5425 USB-Compliant Single-Cell Li-lon Switching Charger

The PSC5425 combines a highly integrated switch-mode charger, to minimize single-cell Lithium-ion (Li-ion) charging time from a USB power source, and a boost regulator to power a USB peripheral from the battery. The charging parameters and operating modes are programmable through an I2C interface that operates up to 400kbps. The charger circuits switch at 1..

Features

tus is reported back to the host through the I2C port. The PSC5425 can operate as a boost regulator on command from the system. The boost regulator includes a soft-start that limits inrush current from the battery. The PSC5425 is available in a 2.04 x 2.0mm, 20-bump, 0.4mm pitch WLCSP package. VAUX VBUS CBUS 1μF VBUS CMID 10μF PMID SW BOOT 10KΩ 10KΩ 10KΩ 10KΩ 10KΩ PSC5425 CSIN SCL SDA STAT VBAT VREF OTG DISABLE PGND HOST L1 Cboot 33nF 1μH RSNS CCSIN 0.1μF BATTERY CBAT 22μF CREF 4.7μF CCSOUT 0.1μF Figure 1: Typical Application Feature
 Fully Integrated, High-Efficiency Char.