LT3591 Просмотр технического описания (PDF) - Linear Technology
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LT3591 Datasheet PDF : 16 Pages
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LT3591
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise specified.
Switch Saturation Voltage
(VCESAT)
500
400
25°C
300
125°C
200
– 50°C
100
0
0 100 200 300 400 500 600 700 800
SWITCH CURRENT (mA)
3591 G01
Sense Voltage (VCAP – VLED)
vs VCTRL
240
– 50°C
25°C
200
125°C
160
120
80
40
0
0 500 1000 1500 2000 2500 3000
VCTRL (mV)
3591 G04
Schottky Forward Voltage Drop
600
500
125°C
400
300
25°C
200
– 50°C
100
0
0 200 400 600 800 1000 1200
SCHOTTKY FORWARD DROP (mV)
3591 G02
Open-Circuit Output
Clamp Voltage
45
44
25°C
43
125°C
42
– 50°C
41
40
0
3
6
9
12
VIN (V)
3591 G05
Shutdown Current (VCTRL = 0V)
15
12
9
– 50°C
6
25°C
125°C
3
0
0
3
6
9
12
VIN (V)
3591 G03
Input Current in Output
Open Circuit
8
7
6
25°C
125°C
5
– 50°C
4
3
2
1
0
0
3
6
9
12
VIN (V)
3591 G06
Switching Waveform
VSW
20V/DIV
VCAP
50mV/DIV
IL
200mA/DIV
VIN = 3.6V
FRONT PAGE
500ms/DIV
APPLICATION CIRCUIT
3591 G07
Transient Response
VCAP
5V/DIV
VCTRL
5V/DIV
IL
500mA/DIV
VIN = 3.6V
FRONT PAGE
1ms/DIV
APPLICATION CIRCUIT
3591 G08
3591f
3
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