LTC1436A データシートの表示（PDF） - Linear Technology
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LTC1436A Datasheet PDF : 28 Pages
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LTC1436A
LTC1436-PLL-A/LTC1437A
TYPICAL PERFORMANCE CHARACTERISTICS
Normalized Oscillator Frequency
vs Temperature
10
5
fO
–5
– 10
– 40 –15
10 35 60 85
TEMPERATURE (°C)
110 135
1436 G10
Maximum Current Sense
Threshold Voltage vs Temperature
154
RUN/SS Pin Current
vs Temperature
4
3
2
1
0
– 40 –15
10 35 60 85
TEMPERATURE (°C)
110 135
1436 G11
SFB Pin Current vs Temperature
0
– 0.25
–1.50
– 0.75
–1.00
–1.25
–1.50
– 40 –15
10 35 60 85
TEMPERATURE (°C)
110 135
1436 G12
Transient Response
Transient Response
152
VOUT
50mV/DIV
150
VOUT
50mV/DIV
148
146
– 40 –15
10 35 60 85
TEMPERATURE (°C)
110 135
1436 G13
Burst Mode Operation
ILOAD = 50mA to 1A
1436 G14
Soft Start: Load Current vs Time
VOUT
20mV/DIV
VITH
200mV/DIV
ILOAD = 50mA
RUN/SS
5V/DIV
INDUCTOR
CURRENT
1A/DIV
1436 G16
1436 G17
ILOAD = 1A to 3A
1436 G15
Auxiliary Regulator Load
Regulation
12.2
EXTERNAL PNP: 2N2907A
12.1
12.0
11.9
11.8
11.7
0
40
80 120 160 200
AUXILIARY LOAD CURRENT (mA)
1436 G18
6
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