bq24721 - Texas Instruments

bq24721 CHARGER AND SYSTEM POWER SELECTOR

The bq24721 is a high efficiency synchronous battery pack charger with high level of integration for portable applications. This device implements a high performance analog front-end that interfaces to the system power management micro-controller through a simplified SBS-like SMBus interface. The dynamic power management (DPM) function modifies the charge cu.

Features

1
•2 High Efficiency NMOS-NMOS Synchronous Buck Converter With User-Selectable 300 kHz or 500 kHz frequency
• bq24721C Offers Softer Turn-On, Stronger Turn-Off
• SBS-Like(1) SMBus Interface for Control and Status Communications With Host
• Programmable Battery Voltage, Charge Current, and AC Adapter Current via SBS-Like SMBus Interface
• 0.4% Charge Voltage Regulation Accuracy
• 3% Charge Current Regulation Accuracy
• 3% Adapter Current Regulation Accuracy Dynamic Power Management (DPM)
• 2% Accuracy Integrated Charge and AC Adapter 20× Current Amplifier Output
• 3-Cell and 4-Cell Li-Ion Volta.