LT3667E View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT3667E Datasheet PDF : 34 Pages
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LT3667
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
Switching Waveforms,
Burst Mode Operation
Switching Waveforms, Full
Frequency Continuous Operation
VSW
5V/DIV
IL
100mA/DIV
VOUT1
5mV/DIV
ILOAD = 10mA
FRONT PAGE APPLICATION
1µs/DIV
VSW
5V/DIV
IL
200mA/DIV
3667 G19
VOUT1
5mV/DIV
ILOAD = 400mA, FRONT PAGE APPLICATION
1µs/DIV
3667 G20
EN Pin Current
1.0
0.8
0.6
0.4
0.2
0
0 5 10 15 20 25 30 35 40
EN PIN VOLTAGE (V)
3667 G22
LDOs:
IN2, IN3 Quiescent Current
60
50
VIN2/3 = 5V
VEN = 2V, VIN1 = 0
IN2
40
VOUT2/3 = 0.8V
ILOAD = 5µA
30
IN3
20
10
0
–50 –25
VIN2/3 = 5V
VEN = 0.3V
0 25 50 75 100 125 150
TEMPERATURE (°C)
3667 G25
LDOs:
Typical Dropout Voltage
600
550
500
450
400
350
300
250
200
150
100
50
0
0
TA = –50°C
TA = 25°C
TA = 125°C
TA = 150°C
20 40 60 80 100 120 140 160 180 200
OUTPUT CURRENT (mA)
3667 G23
LDOs:
5V Quiescent Current IN2
180
VIN1 = VEN = 12V
160
140
120
100
80
60
VEN2/ILIM2 = 0V
40
20
0
0
VEN2/ILIM2 = 2V
5 10 15 20 25 30 35 40 45
VIN2 (V)
3667 G26
8
For more information www.linear.com/LT3667
EN Threshold
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3667 G21
LDOs:
Guaranteed Dropout Voltage
800
= TEST POINTS
700
600
TJ = 150°C
500
400
TJ = 25°C
300
200
100
0
0 20 40 60 80 100 120 140 160 180 200
OUTPUT CURRENT (mA)
3667 G24
LDOs:
5V Quiescent Current IN3
180
VIN1 = VEN = 12V
160
140
120
100
80
60
40
VEN3/ILIM3 = 0V
20
0
0
VEN3/ILIM3 = 2V
5 10 15 20 25 30 35 40 45
VIN3 (V)
3667 G27
3667fb
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