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| LTC3600_15 Datasheet, PDF (7/28 Pages) Linear Technology – 15V, 1.5A Synchronous Rail-to-Rail Single Resistor Step-Down Regulator | |||
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Typical Performance Characteristics
Rising RUN Threshold vs
Temperature
1.60
1.55
1.50
1.45
1.40
â60 â40 â20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
3600 G18
Efficiency vs Load Current
VOUT = 3.3V, VIN = 12V
100
90
80
70
DCM
60
50
CCM
40
30
20
10
0
0.001
0.01
0.1
1
LOAD CURRENT (A)
10
3600 G19
LTC3600
Efficiency vs Load Current
VOUT = 1.2V, VIN = 12V
100
90
80
70
DCM
60
50
CCM
40
30
20
10
0
0.001
0.01
0.1
1
LOAD CURRENT (A)
10
3600 G20
Start-Up Waveform
Start-Up Waveform
Start-Up Waveform
RUN
5V/DIV
VOUT
2V/DIV
IL
1ms/DIV
MODE = CCM
NO PREBIASED VOUT
VIN = 12V
VOUT = 3.3V
RUN
5V/DIV
VOUT
2V/DIV
IL
1A/DIV
3600 G21
1ms/DIV
MODE = DCM
NO PREBIASED VOUT
VIN = 12V
VOUT = 3.3V
3600 G22
RUN
5V/DIV
VOUT
2V/DIV
IL
1A/DIV
1ms/DIV
MODE = CCM
VOUT IS PREBIASED TO 2V
VIN = 12V
VOUT = 3.3V
3600 G23
Start-Up Waveform
RUN
5V/DIV
VOUT
2V/DIV
IL
1A/DIV
1ms/DIV
MODE = DCM
VOUT IS PREBIASED TO 2V
VIN = 12V
VOUT = 3.3V
3600 G24
VIN Overvoltage
VIN
5V/DIV
VOUT
1V/DIV
SW
10V/DIV
20ms/DIV
VIN = 12V TO 18V TO 12V
VOUT = 3.3V
IOUT = 1A
VIN RESISTOR = 30Ω
MODE = CCM
3600 G25
3600fc
7
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