Datasheet

LT3756/LT3756-1/LT3756-2
5
375612fb
Typical perForMance characTerisTics
FB Regulation Voltage
vs Temperature V
REF
Voltage vs Temperature V
REF
Voltage vs V
IN
Switching Frequency vs R
T
Switching Frequency
vs Temperature
SHDN/UVLO Hysteresis Current
vs Temperature
V
(ISP – ISN)
Threshold vs V
CTRL
V
(ISP – ISN)
Threshold vs V
ISP
V
(ISP – ISN)
Threshold
vs Temperature
T
A
= 25°C, unless otherwise noted.
R
T
(k)
SWITCHING FREQUENCY (kHz)
375612 G07
10000
1000
100
10
10 100
V
CTRL
(V)
0
–20
V
(ISP – ISN)
THRESHOLD (mV)
20
60
100
0.5 1 1.5
120
0
40
80
2
375612 G01
ISP VOLTAGE (V)
0
97
V
(ISP – ISN)
THRESHOLD (mV)
99
101
20 40 8060
103
98
100
102
100
375612 G02
V
CTRL
= 2V
97
99
101
103
98
100
102
375612 G03
V
(ISP – ISN)
THRESHOLD (mV)
TEMPERATURE (°C)
–50 0
50
75
–25
25
100
150125
V
CTRL
= 2V
375612 G04
V
FB
(V)
TEMPERATURE (°C)
–50 0
50
75
–25
25
100
150125
1.20
1.22
1.24
1.26
1.28
1.21
1.23
1.25
1.27
375612 G05
V
REF
(V)
TEMPERATURE (°C)
–50 0
50
75
–25
25
100
150125
1.96
1.98
2.00
2.02
2.04
1.97
1.99
2.01
2.03
V
IN
(V)
0
1.96
V
REF
(V)
1.98
2.00
2.02
20 40 10060 80
2.04
1.97
1.99
2.01
2.03
375612 G06
375612 G08
SWITCHING FREQUENCY (kHz)
TEMPERATURE (°C)
–50 0
50
75
–25
25
100
150125
300
350
400
450
500
R
T
= 26.7k
375612 G09
TEMPERATURE (°C)
–50 0
50
75
–25
25
100
150125
1.6
I
SHDN/UVLO
(µA)
2.0
2.4
1.8
2.2