LTC4002_15 Datasheet, PDF (16/16 Pages) Linear Technology – Standalone Li-Ion Switch Mode Battery Charger

LTC4002
TYPICAL APPLICATIO
2-Cell 8.4V, 2A Li-Ion Battery Charger
R1
100k
C3
0.1µF
CER
2
V_CC
3
GATE
V_IN
9V TO 12V
M2
1/2 Si9933ADY
M1
1/2 Si9933ADY
C1
10µF
CER
LTC4002ES8-8.4
5
CHRG
7
SENSE
L1
6.8µH
D2
B330
1
COMP
6
BAT
R_SENSE
50mΩ
C_C
0.47µF
R_C
2.2k
NTC GND
8
4
T
10k
NTC
C2 +
22µF
CER
8.4V
Li-Ion
BATTERY
4002 TA03
NTC: DALE NTHS-1206N02
RELATED PARTS
PART NUMBER
LTC1732-8.4
DESCRIPTION
2-Cell Li-Ion Linear Battery Charger
LTC1733
Li-Ion Battery Charger with Termal Regulation
LTC1734/LTC1734L SOT-23 Li-Ion Battery Chargers
LTC1980
Combination Battery Charger and DC/DC Converter
LTC4006/LTC4007
LTC4008
LTC4052/LTC1730
4A Multiple Cell Li-Ion, NiCd, NiMH, Lead Acid
Battery Chargers
Integrated Pulse Chargers for a 1-Cell Li-Ion Battery
LTC4053
USB Compatible Li-Ion Linear Battery Charger
LTC4054
Standalone Linear Li-Ion Battery Charger
with Integrated Pass Transistor in ThinSOT^TM
LTC4056
Standalone SOT-23 Li-Ion Linear Battery Charger
LTC4412/LTC4413 Low Loss PowerPath^TM Controllers in ThinSOT
PowerPath and ThinSOT are trademarks of Linear Technology Corporation.
COMMENTS
8.8V ≤ V_IN ≤ 12V; Programmable Charge Termination Timer
Standalone Charger
Standalone Charger, Constant-Current/Constant-Voltage/
Constant-Temperature, Integrated MOSFET, No External Sense
Resistor or Blocking Diodes
Need Only Two External Components, Monitors Charge Current, No
Reverse Diode or Sense Resistor Required, 50mA to 700mA
Wall Adapter May Be Above or Below Battery Voltage, Standalone,
1-, 2-Cell Li-Ion, Also for Charging NiMH and NiCd Batteries
6V ≤ V_IN ≤ 28V, High Efficiency ≥ 90%, V_OUT ≤ 28V,
Digital Interface I/O, Small Inductor
0.35Ω Internal N-FET Requires No Blocking Diode,
Current Limit for Safety
Charges from USB Input or AC/DC, 100mA/500mA Up to 1.25A,
Thermal Regulation, Fully Integrated
Thermal Regulation Prevents Overheating, C/10 Termination,
C/10 Indicator
Charge Termination Included, I_CH ≤ 700mA, 8-Lead ThinSOT Package
Automatic Switching Between DC Sources, Simplified Load Sharing
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
4002f
LT/TP 1104 1K PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2003