LT1389BCS8-5 Просмотр технического описания (PDF) - Linear Technology
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LT1389BCS8-5 Datasheet PDF : 12 Pages
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LT1389
TYPICAL APPLICATIO S
Single Cell Li-Ion Battery Supervisory Circuit, IQ = 10µA
RS
620k
5%
+
A1
1/4 LT1496
–
LT1389-1.25
1.75V –
A2
+1/4 LT1496
R1
500k
0.1%
1.25V
VBAT
+
A3
1/4 LT1496
–
R2
1.25M
0.1%
D1, D2: 1N458
R1 TO R4: CAR6 SERIES IRC (512) 992-7900
SW: PMOS SPECIFIED FOR MAXIMUM LOAD CURRENT
OFF
CHARGER
VBAT
SW
T0 LOAD
R3
1.75M
RH1 0.1%
RSW
10M
1M
5%
5%
D1
A
RH2
10M
5%
BATTERY
D2
–
R4
1.25M
0.1%
A4
+1/4 LT1496
1389 TA05
Precision Undervoltage Lockout Circuit
Li-Ion
CELL A
4.1V
R1
3.57M B
0.1%
R2
3M
0.1%
VBATT
R3
2.05M
1%
U2
LT1389
1.250V
R4
150k
1%
+
U1
1/2 LT1495
–
SW1 TO
LOAD
RSW
1M
5%
R5
10M
5%
1389 TA06
R1, R2: IRC CAR6 SERIES
(512) 992-7900
SW1: PMOS SPECIFIED FOR
MAXIMUM LOAD CURRENT
RELATED PARTS
PART NUMBER DESCRIPTION
LTC®1440
Micropower Comparator with Reference
LT1460
Micropower Series Reference
LT1461
Micropower Precision LDO Series Reference
LT1495
LTC1540
1.5µA Precision Rail-to-Rail Dual Op Amp
Nanopower Comparator with Reference
LT1634
Micropower Precision Shunt Voltage Reference
LTC1798
6µA Low Dropout Series Reference
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX:(408)434-0507 q www.linear-tech.com
COMMENTS
3.7µA Max Supply Current, 1% 1.182V Reference,
MSOP, PDIP and SO-8 Packages
0.075% Max, 10ppm/°C Max Drift, 2.5V, 5V and 10V Versions,
MSOP, PDIP, SO-8, SOT-23 and TO-92 Packages
3ppm/°C Max Drift, 0°C to 70°C, –40°C to 85°C, –40°C to 125°C
Options in SO-8
1.5µA Max Supply Current, 100pA Max IOS
600nA Max Supply Current, 2% 1.182V Reference,
MSOP and SO-8 Packages
0.05% Max, 10ppm/°C Max Drift, 1.25V, 2.5V, 4.096V, 5V,
10µA Maximum Supply Current
Available in Adjustable, 2.5V, 3V, 4.096V and 5V
1389fa LT/TP 0200 2K REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1998
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