LT1120I 查看數據表（PDF） - Linear Technology
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LT1120I Datasheet PDF : 12 Pages
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LT1120
TYPICAL APPLICATIO S
LOGIC
LOGIC
OUTPUT
Regulator with Output Voltage Monitor
5V
LT1120
500k
7
5
VIN
REF
6
4
VOUT
–INPUT 8
2
FB
GND
1
0.001μF
98k
+
2k
100k
VOUT
5V
VOUT
10μF
PIN 7
LOGIC
OUTPUT
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
C2
0.001μF
—
—
1120 TA04
R2
—
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.
1120fd
8
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