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BQ2004PN Datasheet(PDF) 8 Page - Texas Instruments

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Part # BQ2004PN
Description  Fast-Charge IC
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ2004PN Datasheet(HTML) 8 Page - Texas Instruments

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8
Charge
Pending
DCMD Tied to Ground?
Rising Edge
on DCMD
Discharge-
Before-Charge
Pulse
Trickle
Charge
Pulse
Trickle
Charge
Pulse
Trickle
Charge
Pulse
Trickle
Charge
Top-Off
Charge
Fast
Charge
Battery Voltage?
Battery Temperature?
Top-Off
Selected?
New Charge Cycle Started by
Any One of:
VCC Rising to Valid Level
Battery Replacement
(VCELL Falling through VMCV)
Inhibit (INH) Released
VEDV < VCELL < VMCV
and
VHTF < VTEMP < VLTF*
VHTF < VTEMP < VLTF*
VEDV < VCELL < VMCV
VTEMP > VLTF or
VTEMP < VHTF
VCELL< VEDV
VCELL< VEDV
Yes
Yes
No
*VSEL = High disables LTF threshold enforcement
No
t > tMCV
> VMCV
VCELL
> VMCV
VCELL
>
VCELL
VMCV
>
VCELL
VMCV
>
VCELL
VMCV
VCELL <
VMCV
Charge
Complete
Battery
Absent
or Maximum
Time Out
VTEMP < VTCO
SD2004.eps
>
VCELL
VMCV
- V or
T/ t or
VTEMP< VTCO
or
Maximum Time Out
Figure 4. State Diagram
bq2004


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