LT1120C(RevB) データシートの表示（PDF） - Linear Technology
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LT1120C Datasheet PDF : 12 Pages
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LT1120
TYPICAL APPLICATIO S
Regulator with Output Voltage Monitor
LOGIC
5V
500k
7
LT1120
LOGIC
OUTPUT
5
VIN
REF
6
4
VOUT
–INPUT 8
2
FB
GND
1
0.001µF 98k
VOUT
5V
+
2k
10µF
100k
LOGIC OUTPUT GOES LOW WHEN VOUT DROPS BY 100mV
1120 TA03
Compensating the Comparator as an Op Amp
6+
7
8–
1M
50µA
AT Av = 100,
SLEW RATE = +0.05V/µs
–6V/µs
R2
C2
Av
R1
1
33Ω
10
100Ω
100
10k
R1
C1
C1
0.1µF
0.047µF
0.002µF
1120 TA04
C2
R2
0.001µF —
—
100k
—
10k
1A Low Dropout Regulator
VIN
2.2k
5
VIN
4
VOUT
LT1120
GND
1
2
FB
*
150Ω*
MJE2955
10k* 100k
100k
0.001µF
+
VOUT
5V
220µF†
1120 TA05
* FOR CURRENT LIMIT ≈ 1.5A
† MUST HAVE LOW ESR. SEVERAL 100µF CAPACITORS CAN BE PARALLELED.
8
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