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BQ24005PWPRG4 Datasheet(PDF) 10 Page - Texas Instruments

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Part # BQ24005PWPRG4
Description  TWO-CELL Li-ION CHARGE MANAGEMENT IC
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

BQ24005PWPRG4 Datasheet(HTML) 10 Page - Texas Instruments

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background image
U1
N/C
N/C
1
20
IN
OUT
2
19
IN
OUT
3
18
VCC
VSENSE
4
17
ISNS
AGND
5
16
N/C
STAT2
6
15
APG/THM
STAT1
7
14
VSEL
CR
9
12
EN
TMR SEL
8
13
GND
N/C
10
11
VCC
C2
0.1
µF
R1
0.1
C1
10
µF
+
DC-
DC+
VCC
bq24005PWP
TEMP
PACK+
PACK-
R2
18.7 k
C3
0.22
µF
+
-
C4
1
µF
Battery
Pack
R4
500
D1
VCC
R5
500
D2
R3
95.3 k
bq24004
bq24005
bq24006
SLUS476F – DECEMBER 2000 – REVISED MAY 2012
www.ti.com
APPLICATION INFORMATION
Figure 13. Li-ION/Li-POL Charger
If the TMR SEL pin is left floating (3 HR time), a 10-pF capacitor should be installed between TMR SEL and
CR.
If a micro process is monitoring the STAT pins, it may be necessary to add some hysteresis into the feedback
to prevent the STAT pins from cycling while crossing the taper detect threshold (usually less than one half
second). See SLUU083 EVM or SLUU113 EVM for additional resistors used for the STAT pins.
FUNCTIONAL DESCRIPTION
The bq2400x supports a precision current- and voltage-regulated Li-Ion charging system suitable for cells with
either coke or graphite anodes. See Figure 14 for a typical charge profile and Figure 15 for an operational
flowchart.
10
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Copyright © 2000–2012, Texas Instruments Incorporated
Product Folder Link(s): bq24004 bq24005 bq24006


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