TEXAS INSTRUMENTS BQ24721 TI IC CHIP
£1.99
Condition: New
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 current depending on system load conditions, avoiding ac adapter overload.
High accuracy current sense amplifiers enable accurate measurement of either the charge current or the ac adapter current, allowing termination of nonsmart packs and monitoring of overall system power.
The adapter isolation diode can be bypassed or entirely replaced with an external MOSFET using a control signal provided by the bq24721, thus reducing overall power dissipation.
Integrated features such as charger soft start, charge overcurrent protection, and IC temperature monitoring provide a second level of protection, in addition to pack and system protection functions.
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
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