Datasheet

LTC1730-4/LTC1730-4.2
12
sn1730 1730fs
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
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www.linear.com
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PART NUMBER DESCRIPTION COMMENTS
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, No Reverse
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R1
1k
R2
10k
4.7Ω
R
SENSE
25mΩ
Li-Ion
BATTERY
Q1
Si2302DS
D3
CHARGE
STATUS
R4
4.1k
R3
10k
NTC*
*NTC: DALE NTHS-1206N02
CHRG
NTC/SHDN
SENSE
BAT
TIMER
C
TIMER
0.1µF
GND
54
V
CC
2
LTC1730ES8-4.2
GATE
C1
1µF
C3
0.047µF
0.022µF
3
6
7
1
8
D1
MBRS120T3
V
IN
= 5V TO 12V WITH 2A CURRENT LIMIT
1730 TA03
Using External N-MOSFET for Higher Charge Current
Single Cell 4.2V Li-Ion Battery Charger (16-Pin Package)
1k 4.7Ω1k1k4.1k
10k
0.1Ω
Li-Ion
BATTERY
10k
NTC*
*NTC: DALE NTHS-1206N02
CHRG
NTC/SHDN
SENSE
BAT
GND
TIMER
0.1µF
NC
10 7, 14
1, 8, 9,16
V
CC
3
LTC1730EGN-4
GATE
1µF
0.047µF
0.022µF
6
11
SEL
12
13
2
15
V
IN
= 5V TO 12V WITH 600mA CURRENT LIMIT
V
CC
1730 TA04
ACPR
4
FAULT
5
TYPICAL APPLICATIO S
U
 LINEAR TECHNOLOGY CORPORATION 2001
LT/TP 0902 1K • PRINTED IN USA