LT1020C View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1020C' PDF : 16 Pages View PDF
LT1020
TYPICAL APPLICATI S
Battery Backup Regulator
BATTERY
INPUT
3
VIN
LT1020
GND
9
2
VOUT
11
FB
0.001µF
VOUT
5V
2
VOUT
1M
10µF
LT1020
11
FB
GND
50k
9
3
VIN
MAIN
POWER
INPUT
INTERNAL PARASITIC
DIODES OF LT1020
1M
VIN
VOUT
1020 TA13
5V Regulator with Shutdown
VIN > 5.2V
IQ = 40µA
3
VIN
LT1020
2
VOUT
GND FB
9
11 100k
0.001µF
5V
10µF
NC
1M
500k 2N3904*
* TRANSISTOR USED BECAUSE OF LOW LEAKAGE
1M
CHARACTERISTICS. TO TURN OFF THE OUTPUT
OF THE LT1020, FORCE FB (PIN 11) > 2.5V.
LOGIC INPUT
1020 TA14
Turn-Off at Dropout
VIN
3
R1
1.5M
9
5
6
1M
* VOUT TURNS OFF AT DROPOUT.
VOUT TURN ON WHEN:
VIN × R2 = 2.5V
R1 + R2
R2
1M
8
2
VOUT
LT1020
DROP-
OUT
7 13
11
FB
REF
4
1.5M
0.047µF
0.001µF 1M
1M
VOUT*
10µF
1020 TA15
11
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