4.2V Default

1C

50 mA

TIME

Battery Voltage

Charging Current

Full Rate Mode

4.2V constant voltage

Full Rate Mode

selectable constant current (C)

Maintenance Mode

zero current

Precharge Mode

50 mA constant current

4.5V

Charger OFF

zero current

From any mode:

or I

2

C disable received

LP3923

SNVS567B – APRIL 2010 – REVISED MAY 2013

www.ti.com

TERMINATION AND RESTART

The termination and restart voltage levels are determined by the data in the VTERM[1:0] and PROG_VSTRT[1:0]

bits in the control register. The restart voltage is programmed relative to the selected termination voltage.

Figure 2. Simplified Charger Functional State Diagram (when EOC is enabled)

Figure 3. Charging Cycle Diagram

20

Submit Documentation Feedback

Copyright © 2010–2013, Texas Instruments Incorporated

Product Folder Links: LP3923