Datasheet

LT3581
6
3581fa
For more information www.linear.com/LT3581
Typical perForMance characTerisTics
SHDN Pin Current SHDN Pin Current Internal UVLO
CLKOUT Rise Time at 1MHz V
IN
OVLO
FAULT Input Voltage Threshold
with Hysteresis
Gate Current vs SS Voltage
Commanded Current Limit vs
SS Voltage
SHDN Voltage Threshold with
Hysteresis
SS VOLTAGE (V)
0
0
GATE CURRENT (µA)
100
300
500
700
200
400
600
800
0.25 0.50 0.75 1.00
3581 G10
1.25
1.50
900
1000
SS VOLTAGE (V)
0
0
SW1 + SW2 CURRENT (A)
1
2
3
0.2 0.4 0.6 0.8
3580 G11
1.0
1.2
4
5
–50 –25 0 50 125
150
25 75 100
TEMPERATURE (°C)
1.20
SHDN VOLTAGE (V)
1.22
1.26
1.28
1.30
1.40
1.34
3581 G12
1.24
1.36
1.38
1.32
SHDN RISING
SHDN FALLING
SHDN VOLTAGE (V)
0
0
SHDN PIN CURRENT (µA)
4
8
12
16
20
24
28
32
0.4 1.0 1.40.2 1.20.6 1.60.8 1.8
2.0
3581 G13
125°C
–40°C
25°C
SHDN VOLTAGE (V)
0
SHDN PIN CURRENT (µA)
200
250
15 25
3581 G14
150
100
5 10 20
40
3530
50
0
125°C
–40°C
25°C
–50 –25 0 50 125
150
25 75 100
TEMPERATURE (°C)
2.20
V
IN
VOLTAGE (V)
2.22
2.26
2.28
2.30
2.40
2.34
3581 G15
2.24
2.36
2.38
2.32
–50 –25 0 50 125
150
25 75 100
TEMPERATURE (°C)
16
V
IN
VOLTAGE (V)
18
20
30
24
3581 G17
26
28
22
–50 –25 0 50 125
150
25 75 100
TEMPERATURE (°C)
0
FAULT VOLTAGE (V)
1.25
0.50
3581 G18
0.75
1.00
0.25
FAULT RISING
FAULT FALLING
0 50
250
200150100
CLKOUT CAPACITIVE LOAD (pF)
0
CLKOUT RISE OR FALL TIME (ns)
5
15
20
25
50
35
3581 G16
10
40
45
30
CLKOUT FALL TIME
CLKOUT RISE TIME
T
A
= 25°C, unless otherwise noted.