Datasheet

LT3796/LT3796-1
7
3796fa
For more information www.linear.com/3796
TYPICAL PERFORMANCE CHARACTERISTICS
R
T
vs Switching Frequency
Switching Frequency vs
Temperature
Quiescent Current vs V
IN
V
ISMON
vs V
(ISP-ISN)
EN/UVLO Hysteresis Current vs
Temperature
V
REF
vs V
IN
T
A
= 25°C, unless otherwise noted.
EN/UVLO Falling/Rising
Threshold vs Temperature
SENSE Current Limit Threshold vs
Temperature
Switching Frequency vs
SS Voltage
V
IN
(V)
0
2.01
2.00
2.02
2.05
37961 G09
4020
60 80 100
1.99
1.98
1.97
2.03
2.04
V
REF
(V)
I
REF
= 0µA
SWITCHING FREQUENCY (kHz)
0
37961 G10
400300200100
500 600 700 800 900 1000
100
10
1
R
T
(kΩ)
TEMPERATURE (°C)
–50
400
390
410
440
37961 G11
0–25
25 50 75 100 150125
380
370
360
420
430
SWITCHING FREQUENCY (kHz)
R
T
= 19.6k
SS VOLTAGE (mV)
0
450
37961 G11a
200 400 600 800 1000 1200
350
400
250
200
300
150
0
50
100
SW FREQUENCY (kHz)
V
IN
(V)
0
1.0
1.5
2.5
37961 G12
4020
60 80 100
0.5
0
2.0
V
IN
CURRENT (mA)
PWM = 0V
V
(ISP-ISN)
(mV)
0
1200
1000
1400
2000
37961 G13
100
200 300 400 500
800
600
400
200
0
1600
1800
V
ISMON
(mV)
TEMPERATURE (°C)
–50
2.0
1.5
3.5
37961 G14
–25
0 25 50 75 100 150125
1.0
0.5
0
2.5
3.0
EN/UVLO HYSTERESIS CURRENT
(µA)
TEMPERATURE (°C)
–50
1.25
1.24
1.28
37961 G15
–25
0 25 50 75 100 150125
1.23
1.22
1.21
1.20
1.19
1.26
1.27
EN/UVLO
(V)
EN/UVLO RISING THRESHOLD
EN/UVLO FALLING THRESHOLD
TEMPERATURE (°C)
–50
115
114
118
37961 G16
–25
0 25 50 75 100 125 150
113
112
111
110
109
108
116
117
SENSE THRESHOLD (mV)