12
LTC1841/LTC1842/LTC1843
184123f LT/TP 1298 4K • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1998
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT
®
1178/LT1179 Dual/Quad 17µA Precision Single Supply Op Amps 70µV Max V
OS
, 5nA Max I
BIAS
LT1351 Single 250µA, 3MHz, 200V/µs Op Amp with Shutdown C-Load
TM
Op Amp Stable Driving Any Capacitive Load
LT1352/LT1353 Dual/Quad 250µA, 3MHz, 200V/µs Op Amps C-Load
Op Amps Stable Driving Any Capacitive Load
LTC1440/LTC1540 Micropower Comparator with 1% Reference 1.182V ±1% Reference, ±10mV (Max) Input Offset
LTC1441/LTC1442 Micropower Dual Comparator with 1% Reference 1.182V ±1% Reference (LTC1442)
LTC1443/LTC1444/LTC1445 Micropower Quad Comparator with 1% Reference LTC1443 Has 1.182V Reference, LTC1444/LTC1445 Have
1.221V Reference and Adjustable Hysteresis
LTC1474 Low Quiescent Current High Efficiency Step-Down 10µA Standby Current, 92% Efficiency, Space Saving 8-Pin
Switching Regulator MSOP Package
LT1495 1.5µA Max, Dual Precision Rail-to-Rail 375µV Max V
OS
, 250pA I
BIAS
, 25pA I
OS
Input and Output Op Amp
LT1521 300mA Low Dropout Regulator with Micropower 0.5V Dropout Voltage, 12µA Quiescent Current, Adjustable
Quiescent Current and Shutdown Output 3V, 3.3V and 5V Fixed
LTC1541/LTC1542 Micropower Op Amp, Comparator and Reference 1.200V ±0.8% Reference (LTC1541) Op Amp Outputs Stable
with 1000pF Load
LT1634 Micropower Precision Shunt Voltage Reference 1.25V Output, 10µA Operating Current, 0.1% Initial Accuracy
10ppm/°C Max Drift
C-Load is a trademark of Linear Technology Corporation.
TYPICAL APPLICATION
U
Low-Battery Load Disconnect and Charge Termination
–
+
–
+
IN A
+
1.2M
10k
2.55M
V
IN
1-CELL
Li-Ion
BATTERY
453k
1.2M
2M
2M
LBO
AT V
IN
= 3V
HYST
3
5
IN B
–
V
–
V
+
Si9924DY
FULL CHARGE
AT V
IN
= 4.2V
LTC1843
2
4
OUT B
1841/43 TA03
8
OUT A 1
7
REF6
