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LP3921 Datasheet(PDF) 22 Page - Texas Instruments

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Part # LP3921
Description  Battery Charger Management and Regulator Unit
PDF  41 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP3921 Datasheet(HTML) 22 Page - Texas Instruments

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4.5V < VCHG_IN < 6.0V
Charger OFF
Zero Current
Pre-Charge mode
50mA Constant current
Full-Rate Charge mode
Constant Current (ICHG)
Full-Rate Charge mode
Constant Voltage (VTERM)
Maintenance mode
Zero current
From any mode:
VCHG_IN < 4.5V
or VCHG_IN > 6.0V
or disabled via serial interface.
Yes
No
Yes
Yes
No
VBATT > 3.0V
VBATT = VTERM
ICHG < EOC
VBATT < VRSTRT
No
No
Yes
Yes
LP3921
SNVS580A – AUGUST 2008 – REVISED MAY 2013
www.ti.com
Figure 6. Simplified Charger Functional State Diagram (EOC is enabled)
The charger operation may be depicted by the following graphical representation of the voltage and current
profiles.
22
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Product Folder Links: LP3921



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