Datasheet

LT3597
5
3597fa
Typical perForMance characTerisTics
UVLO Threshold Voltage (Falling) EN/UVLO Pin Bias Current V
REF
Voltage
Switching Frequency Current Limit Switch Voltage Drop
V
IN
Quiescent Current V
BIAS
Quiescent Current Shutdown Current
T
A
= 25°C, unless otherwise noted.
0
V
IN
CURRENT (mA)
1.0
1.5
0.5
40
60
3597 G01
0
2.0
3.0
2.5
3010 20 50
V
IN
VOLTAGE (V)
–40°C
25°C
V
BIAS
= 5V
125°C
0
V
BIAS
CURRENT (mA)
1.0
1.5
0.5
0
15
25
3597 G02
–0.5
2.0
3.0
2.5
105 20
V
BIAS
VOLTAGE (V)
125°C
V
IN
= 24V
–40°C
25°C
–50
CURRENT (µA)
1.00
1.25
0.50
0.75
0.25
75 125
3597 G03
0
1.50
2.00
1.75
50250–25 100
TEMPERATURE (°C)
I
BIAS
I
VIN
V
IN
= 55V
V
BIAS
= 25V
–50
UVLO VOLTAGE (V)
1.4
1.5
1.2
1.3
1.1
1.0
75 125
3597 G04
1.6
1.8
1.7
50250–25 100
TEMPERATURE (°C)
–50
CURRENT (µA)
4
5
2
3
1
75 125
3597 G05
0
6
50250–25 100
TEMPERATURE (°C)
EN/UVLO = 1.4V
EN/UVLO = 1.6V
–50
V
REF
VOLTAGE (V)
2.02
2.03
2.00
2.01
1.99
1.98
1.97
75 125
3597 G06
1.96
2.04
50250–25 100
TEMPERATURE (°C)
V
IN
= 6V
V
IN
= 55V
V
IN
= 24V
V
REF
LOAD = 0µA
–50
FREQUENCY (MHz)
0.8
1.0
0.6
0.4
0.2
75 125
3597 G07
0
1.2
50250–25 100
TEMPERATURE (°C)
R
T
= 33.2k
R
T
= 220k
–50
CURRENT (mA)
400
500
300
200
100
75 125
3597 G08
0
600
50250–25 100
TEMPERATURE (°C)
DA
SWITCH
0
SWITCH VOLTAGE DROP (mV)
400
500
300
200
100
250
3597 G09
0
600
20015010050
SWITCH CURRENT (mA)
–40°C
25°C
V
BIAS
= 5V
125°C