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LT1175CS8 데이터시트(PDF) 4 Page - Linear Technology

부품명 LT1175CS8
상세설명  500mA Negative Low Dropout Micropower Regulator
PDF  12 Pages
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LT1175CS8 데이터시트(HTML) 4 Page - Linear Technology

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LT1175
TYPICAL PERFORMANCE CHARACTERISTICS
Typical Current Limit
Characteristics
INPUT-TO-OUTPUT DIFFERENTIAL VOLTAGE (V)
0
0.6
0.5
0.4
0.3
0.2
0.1
0
510
15
20
1175 G02
25
CURVES REPRE-
SENT MINIMUM
GUARANTEED
LIMITS AT ALL
TEMPERATURES
ILIM2, ILIM4 OPEN
ILIM4 TIED TO VIN
ILIM2 TIED TO VIN
ILIM2, ILIM TIED TO VIN
Guaranteed Current Limit
JUNCTION TEMPERATURE (
°C)
–50
5.05
5.00
4.95
3.84
3.80
3.76
0
50
75
1175 G03
–25
25
100
125
OUTPUT
FIXED 5V PART
FEEDBACK VOLTAGE
ADJUSTABLE PART
Output Voltage Temperature Drift
Minimum Input-to-Output Voltage
OUTPUT CURRENT (A)
0
1.0
0.8
0.6
0.4
0.2
0
0.2
0.4
0.5
1175 G04
0.1
0.3
0.6
0.7
TJ = 25°C
VIN REDUCED
UNTIL OUTPUT
VOLTAGE
DROPS 1%
ILIM2, ILIM4
OPEN
ILIM2, ILIM4
TIED TO VIN
ILIM4 TIED
TO VIN
ILIM2 TIED
TO VIN
Minimum Input-to-Output Voltage
TEMPERATURE (
°C)
–50
100
80
60
40
20
0
0
50
75
1175 G06
–25
25
100
125
OUTPUT CURRENT (A)
0
1.0
0.8
0.6
0.4
0.2
0
0.2
0.4
0.5
1175 G05
0.1
0.3
0.6
0.7
VIN REDUCED UNTIL OUTPUT
VOLTAGE DROPS 1%.
ILIM2, ILIM4 TIED TO VIN
TJ = 125°C
TJ = –55°C
TJ = 25°C
SENSE Bias Current
(Adjustable Part)
INPUT-TO-OUTPUT DIFFERENTIAL VOLTAGE (V)
0
1.0
0.8
0.6
0.4
0.2
0
20
1175 G01
5
10
15
25
ILIM2, ILIM TIED TO VIN
ILIM2, ILIM4 OPEN
ILIM4 TIED TO VIN
ILIM2 TIED TO VIN
CURRENT LIMIT CHANGES ONLY SLIGHTLY
WITH TEMPERATURE SO CURVES ARE
REPRESENTATIVE OF ALL TEMPERATURES
Shutdown Thresholds
Shutdown Input Current
SHDN Pin Characteristics
SHUTDOWN TO GROUND VOLTAGE (V)
–25 –20
–10
0
15
10
5
0
–5
–10
15
1175 G09
–15
–5
10
20
5
25
VIN = 25V
CHARACTERISTICS DO NOT
CHANGE SIGNIFICANTLY WITH
TEMPERATURE, SO A SINGLE
CURVE IS SHOWN. POSITIVE
CURRENT FLOWS INTO
SHDN PIN
IF SHDN PIN IS NEGATIVE WITH
RESPECT TO INPUT VOLTAGE AND
INPUT VOLTAGE IS LESS THAN 15V,
NEGATIVE BREAKOVER POINT WILL
BE ABOUT 8V BELOW –VIN
TEMPERATURE (
°C)
–50
2.5
2.0
1.5
1.0
0.5
0
0
50
25
75
1175 G08
–25
100
125
POSITIVE THRESHOLD
NEGATIVE THRESHOLD
DEVICE IS OFF
BELOW THRESHOLD
INPUT VOLTAGE (V)
0
25
20
15
10
5
0
20
1175 G07
5
10
15
25
TJ = 125°C
TJ = –55°C
TJ = 25°C



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