LT1573C 데이터 시트보기 (PDF) - Linear Technology
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LT1573C Datasheet PDF : 16 Pages
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LT1573
TYPICAL PERFOR A CE CHARACTERISTICS
Drive Pin Current vs
Feedback Pin Voltage
450
TJ = 130°C
400
350
TJ = 25°C
300
TJ = –45°C
250
200
150
100
50
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
FEEDBACK PIN VOLTAGE (V)
1573 G07
Drive Pin Saturation Voltage vs
Drive Pin Current
1.0
0.9
0.8
0.7
TJ = 130°C
0.6
0.5
TJ = –45°C
0.4
0.3
TJ = 25°C
0.2
0.1
0
0 50 100 150 200 250 300
DRIVE PIN CURRENT (mA)
1573 G08
Latch-Disable Threshold
(VIN – VOUT) vs Temperature
0.85
0.80
0.75
0.70
0.65
0.60
0.55
VIN = 5V
0.50 LATCH DISABLED FOR
(VIN – VOUT) < LATCH DISABLE THRESHOLD
0.45
0.40
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
1573 G09
Latch Pin Latch-Off Threshold vs
Input Voltage
3.0
2.5
2.0
TJ = –45°C
1.5
TJ = 125°C
1.0
TJ = 25°C
0.5
0
23
45
67
8
INPUT VOLTAGE (V)
1573 G10
Latch Charging Current vs
Input Voltage
16
14
12
TJ = –45°C
10
8
TJ = 25°C
6
4
TJ = 125°C
2
0
23
4
5
67
8
INPUT VOLTAGE (V)
1573 G11
Latching Current vs Input Voltage
1.0
0.9
TJ = 25°C
0.8
0.7
TJ = –45°C
TJ = 125°C
0.6
0.5
0.4
0.3
0.2
0.1
0
23
4
5
6
7
8
INPUT VOLTAGE (V)
1573 G12
Shutdown Voltage Threshold vs
Temperature
1.5
1.4
1.3
1.2
Shutdown Pin Current vs
Shutdown Pin Voltage
300
250
TJ = –45°C
TJ = 25°C
200
150
TJ = 125°C
100
1.1
50
1.0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
1573 G13
0
012 34 567
SHUTDOWN PIN VOLTAGE (V)
1573 G14
4
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