Datasheet

LT3761
7
3761f
Typical perFormance characTerisTics
T
A
= 25°C, unless otherwise noted.
ISP/ISN Input Bias Current
vs CTRL Voltage, ISN = 0V
PWMOUT Duty Ratio
vs Temperature, I
DIM/SS
= 21.5µA
V
ISP-ISN
Overcurrent Threshold
vs Temperature
PWMOUT Duty Ratio
vs Temperature, I
DIM/SS
= 0µA
ISP/ISN Input Bias Current
vs CTRL Voltage, ISP = 48V
DIM/SS Voltage
vs Current, Temperature
CTRL (V)
0
INPUT BIAS CURRENT (µA)
40
120
100
80
20
60
3761 G20
0 0.5 1 1.5 2
ISP
ISN
CTRL (V)
–200
INPUT BIAS CURRENT (µA)
–120
0
–40
–160
–80
3761 G21
0 0.5 1 1.5 2
ISP
ISN
DIM/SS CURRENT (µA)
3761 G19
–10 0 10 20 4030 50
1.10
1.15
1.30
1.20
1.25
DIM/SS VOLTAGE (V)
T
A
= –45°C, 25°C
T
A
= 130°C
6.5
7.0
8.0
9.5
9.0
7.5
8.5
3761 G22
DUTY RATIO (%)
TEMPERATURE (°C)
–50 0 50 75–25 25 100 150125
C
PWM
= 47nF
45
49
55
53
47
51
3761 G23
DUTY RATIO (%)
TEMPERATURE (°C)
–50 0 50 75–25 25 100 150125
C
PWM
= 47nF
3761 G24
V
ISP-ISN
(mV)
TEMPERATURE (°C)
300
400
700
600
800
500
–50 0 50 75–25 25 100 150125
ISP = 24V
ISN = 0V