LT1313CS 查看數據表（PDF） - Linear Technology
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LT1313CS Datasheet PDF : 12 Pages
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LT1313
TYPICAL PERFORMANCE CHARACTERISTICS
Enable Input Threshold Voltage
3.0
VS = 15V
2.5
2.0
1.5
1.0
0.5
0
0
25
50
75 100 125
JUNCTION TEMPERATURE (°C)
1313 G10
VCC Sense Input Current
50
TJ = 25°C
VS = 15V
40
30
20
10
0
012
3
4
56
VCC SENSE INPUT VOLTAGE (V)
1313 G13
12V Turn-On Waveform
12.4
VS = 15V
12.2
12.0
11.8
COUT = 1µF
COUT = 10µF
11.6
Enable Input Current
50
TJ = 25°C
VS = 15V
40
30
20
10
0
0
1
2
3
4
56
ENABLE INPUT VOLTAGE (V)
1313 G11
VALID Output Voltage
1.0
TJ = 25°C
VS = 15V
0.8 12V MODE
0.6
0.4
0.2
0
0 0.5 1.0 1.5 2.0 2.5 3.0
VALID OUTPUT CURRENT (mA)
1313 G14
Line Transient Response (12V)
40
20
COUT = 1µF
0
–20
COUT = 10µF
–40
VCC Sense Threshold Voltage
5.5
TJ = 25°C
VS = 15V
5.0
4.5
SWITCH TO 5V
4.0
SWITCH TO 3.3V
3.5
3.0
2.5
0
25
50
75 100 125
JUNCTION TEMPERATURE (°C)
1313 G12
Ripple Rejection (12V)
100
TJ = 25°C, 12V MODE
VS = 15V + 100mVRMS RIPPLE
80
60
COUT = 1µF TANTALUM
40
20
0
10 100
1k
10k 100k 1M
FREQUENCY (Hz)
1313 G15
Load Transient Response (12V)
0.4
0.2
COUT = 1µF
0
–0.2
COUT = 10µF
–0.4
5
0
–0.2 0
0.2 0.4 0.6 0.8 1.0 1.2
TIME (ms)
1313 G16
15
13
–0.1 0
0.1 0.2 0.3 0.4 0.5 0.6
TIME (ms)
1313 G17
100
50
–0.1 0
0.1 0.2 0.3 0.4 0.5 0.6
TIME (ms)
1313 G18
4
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