LTC2943
TYPICAL APPLICATION
2-Cell 8.4V Linear Charger and Battery Gas Gauge
V
= 10V
IN
MBRM120T3
C1
1µF
R1
1k
R2
1k
R
SENSE
2
8
0.25Ω
SEL
V
CC
9
7
SENSE
DRV
Q1
Si7135DP
3
CHRG
LTC1732-8.4
GND
I
= 500mA
BAT
1
6
10
4
0.5A
LOAD
ACPR
BAT
TIMER
PROG
C2
10µF
3.3V
C3
1µF
C
TIMER
0.1µF
R
19.6k
PROG*
R3 R4 R5
2k 2k 2k
LTC2943
+
–
SENSE
V
DD
ALCC
R
SENSE
100mΩ
SDA
SCL
µP
SENSE
+
8.4V
Li-Ion
GND
BATTERY
2943 TA02
RELATED PARTS
PART
NUMBER
DESCRIPTION
COMMENTS
Battery Gas Gauges
2
LTC2941
Battery Gas Gauge with I C Interface
2.7V to ±.±V Operation, 6-Lead (2mm × 3mm) DFN Package
2.7V to ±.±V Operation, 6-Lead (2mm × 3mm) DFN Package
2
LTC2941-1
1A I C Battery Gas Gauge with Internal Sense
Resistor
LTC2942
LTC2942-1
LTC41±0
Battery Gas Gauge with Temperature/Voltage
Measurement
2.7V to ±.±V Operation, 14-Bit Δ∑-ADC, 6-Lead (2mm × 3mm) DFN Package
1A Battery Gas Gauge with Internal Sense Resistor 2.7V to ±.±V Operation, 14-Bit Δ∑-ADC, 6-Lead (2mm × 3mm) DFN Package
and Temperature/Voltage Measurement
Coulomb Counter/Battery Gas Gauge
2.7V to 8.±V Operation, 10-Pin MSOP Package
Battery Chargers
LTC4000
High Voltage High Current Controller for Battery
Charging and Power Management
3V to 60V Operation, 28-Lead (4mm × ±mm) QFN or SSOP Packages
LTC4009
LTC4012
High Efficiency, Multi-Chemistry Battery Charger
6V to 28V Operation, 20-Lead (4mm × 4mm) QFN Package
6V to 28V Operation, 20-Lead (4mm × 4mm) QFN Package
High Efficiency, Multi-Chemistry Battery Charger
with PowerPath™ Control
LT36±2HV
LTC1732
Power Tracking 2A Battery Charger
Input Supply Voltage Regulation Loop for Peak Power Tracking, ±V to 34V Operation,
1MHz, 2A Charge Current, 3mm × 3mm DFN-12 and MSOP-12 Packages
Li-Ion Battery Charger
4.±V to 12V Operation, MSOP-10 Package
2943fa
LT 0514 REV A • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 9±03±-7417
20
For more information www.linear.com/LTC2943
●
●
(408)432-1900 FAX: (408) 434-0±07 www.linear.com/LTC2943
LINEAR TECHNOLOGY CORPORATION 2013
Linear [ Linear ]
