Datasheet

LT3579/LT3579-1
6
35791fa
For more information www.linear.com/LT3579
TYPICAL PERFORMANCE CHARACTERISTICS
Active/Lockout Threshold SHDN Pin Current SHDN Pin Current
Internal UVLO V
IN
OVLO Fault Input Threshold
CLKOUT Rise Time at 1MHz Gate Pin Current (V
SS
= 2.1V) Gate Pin Current (V
GATE
= 5V)
0 50 250200150100
CLKOUT CAPACITIVE LOAD (pF)
0
CLKOUT RISE OR FALL TIME (ns)
5
15
20
25
50
35
35791 G10
10
40
45
30
CLKOUT FALL TIME
CLKOUT RISE TIME
GATE PIN VOLTAGE (V)
0
0
GATE PIN CURRENT (µA)
600
700
800
900
550
400
300
200
100
1000
10 40 50 60 70 8020
35791 G11
30
T
A
= –40°C T
A
= 25°C T
A
= 125°C
0
100
200
300
400
500
600
700
800
900
1000
0 10 20 30 40 50 60 70 80
GATE PIN CURRENT (µA)
GATE PIN VOLTAGE (V)
GATE Pin Current (V
SS
= 2.1V)
T
A
= 25°C
T
A
= -40°C
T
A
= 125°C
SS VOLTAGE (V)
0
0
GATE PIN CURRENT (µA)
600
700
800
900
500
400
300
200
100
1000
0.25 0.75 1 1.25 1.5
35791 G12
0.5
TEMPERATURE (°C)
–50
1.2
SHDN VOLTAGE (V)
1.32
1.34
1.36
1.38
1.3
1.28
1.26
1.24
1.22
1.4
–25 25 50 75 100 125 150
35791 G13
0
SHDN RISING
SHDN FALLING
SHDN VOLTAGE (V)
0
0
SHDN PIN CURRENT (µA)
20
25
15
10
5
30
0.25 0.75 1 1.25 1.5 1.75 2
35791 G14
0.5
T
A
= 125°C
T
A
= 25°C
T
A
= –40°C
SHDN VOLTAGE (V)
0
0
SHDN PIN CURRENT (µA)
200
150
100
50
250
5 15 20 25 30 35 40
35791 G15
10
T
A
= 125°C
T
A
= 25°C
T
A
= –40°C
TEMPERATURE (°C)
–50
2.1
V
IN
VOLTAGE (V)
2.45
2.35
2.4
2.25
2.3
2.15
2.2
2.5
–25 25 50 75 100 125 150
35791 G16
0
TEMPERATURE (°C)
–50
12
V
IN
VOLTAGE (V)
21
17
18
19
20
15
16
13
14
22
–25 25 50 75 100 125 150
35791 G17
0
TEMPERATURE (°C)
–50
0
FAULT VOLTAGE (V)
0.75
1
0.5
0.25
1.25
–25 25 50 75 100 125 150
35791 G18
0
FAULT FALLING
FAULT RISING
T
A
= 25°C, unless otherwise noted.