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LT1977 Datasheet(PDF) 4 Page - Linear Technology

No. de Pieza. LT1977
Descripción  High Voltage 1.5A, 500kHz Step-Down Switching Regulator with 100uA Quiescent Current
Descarga  24 Pages
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Fabricante  LINER [Linear Technology]
Página de inicio  http://www.linear.com
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LT1977 Datasheet(HTML) 4 Page - Linear Technology

 
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LT1977
4
1977f
TYPICAL PERFOR A CE CHARACTERISTICS
FB Voltage
Oscillator Frequency
SHDN Threshold
SHDN Pin Current
Shutdown Supply Current
Sleep Mode Supply Current
Bias Sleep Current
1.20
1.21
1.23
1.24
1.25
1.30
1.27
1.22
1.28
1.29
1.26
TEMPERATURE (°C)
–50
0
50
75
1977 G01
–25
25
100
125
TEMPERATURE (°C)
–50
450
460
480
490
500
550
520
0
50
75
1977 G02
470
530
540
510
–25
25
100
125
1.35
1977 G03
1.20
1.10
1.05
1.00
1.40
1.30
1.25
0.15
TEMPERATURE (°C)
–50
0
50
75
–25
25
100
125
SHDN VOLTAGE (V)
0
0
1.5
2.5
3.5
10
20
30
40
1977 G04
50
4.5
5.5
1.0
2.0
3.0
4.0
5.0
60
TJ = 25°C
1977 G05
20
10
5
0
25
15
TEMPERATURE (°C)
–50
0
50
75
–25
25
100
125
VIN = 60V
VIN = 42V
VIN = 12V
1977 G06
160
80
40
0
200
120
140
60
20
180
100
VBIAS = 0V
VBIAS = 5V
TEMPERATURE (°C)
–50
0
50
75
–25
25
100
125
1977 G07
160
80
40
0
200
120
140
60
20
180
100
TEMPERATURE (°C)
–50
0
50
75
–25
25
100
125
PGFB Threshold
1977 G08
1.16
1.08
1.04
1.00
1.20
1.12
1.14
1.06
1.02
1.18
1.10
TEMPERATURE (°C)
–50
0
50
75
–25
25
100
125
PG Sink Current
1977 G09
200
100
50
0
250
150
TEMPERATURE (°C)
–50
0
50
75
–25
25
100
125


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