LTC1435CS データシートの表示（PDF） - Linear Technology
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LTC1435CS Datasheet PDF : 20 Pages
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LTC1435
TYPICAL PERFORMANCE CHARACTERISTICS
Input Supply and Shutdown
Current vs Input Voltage
2.5
100
2.0
80
1.5
VOUT = 5V
EXTVCC = VOUT
60
1.0
VOUT = 3.3V
40
EXTVCC = OPEN
0.5
20
SHUTDOWN
0
0
0 5 10 15 20 25 30
INPUT VOLTAGE (V)
1435 G07
Normalized Oscillator Frequency
vs Temperature
10
5
fO
–5
–10
– 40 –15
10 35 60 85
TEMPERATURE (°C)
110 135
1435 G10
Maximum Current Sense
Threshold Voltage vs Temperature
154
INTVCC Regulation
vs INTVCC Load Current
0.5
VEXTVCC = 0V
0.3
70°C
0
25°C
– 0.3
– 0.5
0
5
10
15
INTVCC LOAD CURRENT (mA)
20
1435 G08
RUN/SS Pin Current
vs Temperature
4
EXTVCC Switch Drop
vs INTVCC Load Current
200
180
160
70°C
140
120
25°C
100
– 55°C
80
60
40
20
0
0 2 4 6 8 10 12 14 16 18 20
INTVCC LOAD CURRENT (mA)
1435 G09
SFB Pin Current vs Temperature
0
– 0.25
3
– 0.50
2
– 0.75
–1.00
1
–1.25
0
– 40 –15
10 35 60 85
TEMPERATURE (°C)
110 135
1435 G11
–1.50
– 40 –15
10 35 60 85
TEMPERATURE (°C)
110 135
1435 G12
Transient Response
Transient Response
152
VOUT
50mV/DIV
VOUT
50mV/DIV
150
148
146
– 40 –15
10 35 60 85
TEMPERATURE (°C)
110 135
1435 G13
ILOAD = 50mA to 1A
1435 G14
ILOAD = 1A to 3A
1435 G15
4
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