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| BQ24170 Datasheet, PDF (5/35 Pages) Texas Instruments – 1.6-MHz Synchronous Switch-Mode Li-Ion and Li-Polymer Stand-Alone Battery Charger | |||
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www.ti.com
bq24170
bq24172
SLUSAD2A â NOVEMBER 2010 â REVISED NOVEMBER 2010
15V Adapter
RIN
2
CIN
2.2?
VBAT
D2
D1
R20
10
Q1
Q2
RAC: 10m
C12: 0.1µ
R11
4.02k
R12
4.02k
C2: 1µ
VREF
R4
100k
R5
32.4k
C11: 0.1µ
ACN
ACP
CMSRC
PVCC
BATDRV
ACDRV
VREF
SW
R21
100k
bq24172
ISET
R22
32.4k
ACSET
BTST
REGN
Battery LEARN
VREF
R20 FB
599k
R21
499k
LEARN
R6
499k
R7
49.9k
VREF
R17
49.9k
R8
5.23k
RT
103AT
C1
1µ
C3: 0.1?
R9 R10
30.1k 1.5k
VREF D3
AVCC
OVPSET
TTC
PGND
SRP
SRN
TS
FB
THERMAL
STAT PAD
System
C4
10µ
R14
1k
L: 2.2?H
Q3
RSR:10m
VBAT
C5
0.047?
C7
0.1?
C6
1?
C8
0.1?
C9, C10
20? 10?
R2
499k
R1
100k
Figure 2. Typical Application Schematic with Battery Learn Function (15V input, 3 cell battery 12.6V, 4A
charge current, 0.4A pre-charge/termination current, 4A DPM current, 0 â 45°C TS)
Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): bq24170 bq24172
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