LT1933HS6 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT1933HS6 Datasheet PDF : 20 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LT1933
Frequency Foldback
700 TA = 25°C
600
500
400
300
200
100
0
0.0
0.5
1.0
FB PIN VOLTAGE (V)
1.5
1933 G10
Soft-Start
1.4 TA = 25°C
DC = 30%
1.2
1.0
0.8
0.6
0.4
0.2
0
0
1
2
3
SHDN PIN VOLTAGE (V)
4
1933 G11
SHDN Pin Current
200 TA = 25°C
150
100
50
0
0
4
8
12
16
SHDN PIN VOLTAGE (V)
1933 G12
Typical Minimum Input Voltage
8
VOUT = 5V
TA = 25°C
L = 33μH
7
TO START
6
TO RUN
5
4
1
10
100
LOAD CURRENT (mA)
1933 G13
Operating Waveforms
Typical Minimum Input Voltage
6.0
VOUT = 3.3V
TA = 25°C
5.5
L = 22μH
TO START
5.0
4.5
4.0
3.5
TO RUN
3.0
1
10
100
LOAD CURRENT (mA)
1933 G14
Switch Current Limit
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
1933 G15
Operating Waveforms,
Discontinuous Mode
VSW 10V/DIV
IL 200mA/DIV
VOUT1
1.8V
VOUT2
1.2V
VOUT 10mV/DIV
VIN = 12V, VOUT = 3.3V, IOUT = 400mA, 1933 G16
L = 22μH, COUT = 22μF
VSW 10V/DIV
IL 200mA/DIV
VOUT1
1.8V
VOUT2
1.2V
VOUT 10mV/DIV
VIN = 12V, VOUT = 3.3V, IOUT = 20mA,
L = 22μH, COUT = 22μF
1933 G17
1933fe
5
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