LT1936H Просмотр технического описания (PDF) - Linear Technology
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LT1936H Datasheet PDF : 20 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LT1936
Minimum Input Voltage
7.0
VOUT = 5V
TA = 25°C
6.5 L = 15μH
6.0
5.5
5.0
4.5
4.0
1
10
100
LOAD CURRENT (mA)
1000
1936 G13
Minimum Input Voltage
5.0
VOUT = 3.3V
TA = 25°C
L = 10μH
4.5
4.0
3.5
3.0
1
10
100
LOAD CURRENT (mA)
1000
1936 G14
Switch Current Limit
3.0
2.5
2.0
1.5
1.0
0.5
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
1936 G15
Switching Waveforms
VSW
10V/DIV
IL
500mA/DIV
VOUT
20mV/DIV
VIN = 12V
VOUT = 3.3V
IOUT = 1A
L = 10μH
COUT = 22μF
1μs/DIV
1936 G16
Switching Waveforms,
Discontinuous Mode
VSW
10V/DIV
IL
500mA/DIV
VOUT
20mV/DIV
VIN = 12V
VOUT = 3.3V
IOUT = 50mA
L = 10μH
COUT = 22μF
1μs/DIV
1936 G17
VC Voltages
2.5
2.0
CURRENT LIMIT CLAMP
1.5
1.0
SWITCHING THRESHOLD
0.5
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
1936 G18
Error Amp Output Current
60
TA = 25°C
VC = 0.5V
40
20
0
–20
–40
–60
0
1
FB PIN VOLTAGE (V)
2
1936 G19
1936fd
5
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