LTC1730-4.2_15 Datasheet, PDF (12/12 Pages) Linear Technology – Lithium-Ion Battery Pulse Charger with Overcurrent Protection

LTC1730-4/LTC1730-4.2
TYPICAL APPLICATIO S
Single Cell 4.2V Li-Ion Battery Charger (16-Pin Package)
V_IN = 5V TO 12V WITH 600mA CURRENT LIMIT
4.1k 1k
10k
NTC*
3
1k
1k
V_CC
10k
4.7Ω
LTC1730EGN-4
1µF
6
CHRG
4
ACPR
5
FAULT
2
SENSE
13
GATE
0.047µF
0.1Ω
11
15
NTC/SHDN BAT
0.022µF
V_CC
12
SEL
TIMER
1, 8, 9,16
GND
NC
Li-Ion
BATTERY
10
7, 14
0.1µF
*NTC: DALE NTHS-1206N02
1730 TA04
Using External N-MOSFET for Higher Charge Current
V_IN = 5V TO 12V WITH 2A CURRENT LIMIT
D1
MBRS120T3
CHARGE
STATUS
R4
R1
4.1k 1k
D3
3
6
R3
10k
NTC*
2
V_CC
LTC1730ES8-4.2
SENSE
CHRG
GATE
NTC/SHDN BAT
R2
10k
C3
0.047µF
1
7
8
0.022µF
TIMER GND
5
4
C_TIMER
0.1µF
*NTC: DALE NTHS-1206N02
R_SENSE
25mΩ
Q1
Si2302DS
Li-Ion
BATTERY
4.7Ω
C1
1µF
1730 TA03
RELATED PARTS
PART NUMBER
LTC1731
LTC1732
LT1510-5
LTC1729
DESCRIPTION
Li-Ion Linear Battery Charger Controller
Li-Ion Linear Battery Charger Controller
500kHz CC/CV Switching Battery Charger
Termination Controller for Li-Ion
LTC1733
Li-Ion Battery Charger with Internal FET
LTC1734
ThinSOT Li-Ion Battery Charger
LTC4050
Li-Ion Linear Charger with Thermistor Interface
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^q FAX: [phone] ^q www.linear.com
COMMENTS
CC/CV Charges Li-Ion Cells, 8-Lead MSOP
Stand Alone Charger, Automatic Battery Detection, 10-Lead MSOP
Most Compact, Up to 1.5A, Charges NiCd, NiMH, Li-Ion Cells
Time or Charge Current Termination, Automatic Charger/Battery
Detection Status Output, Preconditioning, 8-Lead MSOP
1.5A CC/CV, 10-Lead Enhanced MSOP, Thermal Regulation for Constant
Temperature, No Blocking Diode, No Sense Resistor Required
Only Two External Components, Up to 700mA I_CHARGE, No Reverse
Current Diode Required, No Sense Resistor Required
Stand Alone Charger; 10-Lead MSOP, Up to 1A Charge Current
sn1730 1730fs
LT/TP 0902 1K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2001