Datasheet
LT3596
5
3596fa
Typical perForMance characTerisTics
UVLO Threshold EN/UVLO Pin Current V
REF
Voltage
Switching Frequency SW and DA Current Limit Switch Voltage Drop
V
IN
Quiescent Current BIAS Quiescent Current V
IN
, BIAS Shutdown Current
T
A
= 25°C, unless otherwise noted
V
IN
VOLTAGE (V)
0
0
V
IN
CURRENT (mA)
0.4
0.8
1.2
10
20
30 40
3596 G01
50
1.6
2.0
0.2
0.6
1.0
1.4
1.8
60
T = 125°C
T = 25°C
T = –40°C
V
BIAS
= 5V
BIAS VOLTAGE (V)
0
BIAS CURRENT (mA)
1.0
1.5
2.0
20
3596 G02
0.5
0
–0.5
5
10
15
25
T = 125°C
T = 25°C
T = –40°C
V
IN
= 24V
TEMPERATURE (°C)
–50
0.8
1.0
1.4
I
VIN
25 75
3596 G03
0.6
0.4
–25 0
50 100 125
0.2
0
1.2
CURRENT (µA)
V
IN
= 55V
V
BIAS
= 25V
I
VBIAS
TEMPERATURE (°C)
–50
UVLO THRESHOLD (V)
1.7
25
3596 G04
1.4
1.2
–25 0 50
1.1
1.0
1.8
1.6
1.5
1.3
75 100 125
TEMPERATURE (°C)
–50
EN/UVLO CURRENT (µA)
4
5
6
25 75
3596 G05
3
2
–25 0
50 100 125
1
0
V
EN/UVLO
= 1.4V
TEMPERATURE (°C)
–50
V
REF
VOLTAGE (V)
2.03
25
3596 G06
2.00
1.98
–25 0 50
1.97
1.96
2.04
2.02
2.01
1.99
75 100 125
V
IN
= 55V
V
IN
= 24V
V
IN
= 6V
TEMPERATURE (°C)
–50
0.8
1.0
1.4
25 75
3596 G07
0.6
0.4
–25 0
50 100 125
0.2
0
1.2
SWITCHING FREQUENCY (MHz)
R
T
= 33.2k
R
T
= 220k
TEMPERATURE (°C)
–50
CURRENT LIMIT (mA)
900
1000
1100
I
SW
I
DA
25 75
3596 G08
800
700
–25 0
50 100 125
600
500
SWITCH CURRENT (mA)
0
0
SWITCH VOLTAGE (mV)
100
300
400
500
1000
700
200
400
500
3596 G09
200
800
900
600
100 300
600
700
800
T = 125°C
T = 25°C
T = –40°C