LT3798
TA = 25°C, unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
EN/UVLO Threshold
vs Temperature
EN/UVLO Hysteresis Current
vs Temperature
VIN IQ vs Temperature
1.3
1.28
1.26
1.24
1.22
1.2
12
11.±
11
100
90
80
70
60
±0
40
30
20
10
0
V
IN
= 24V
V
IN
= 12V
RISING
FALLING
10.±
10
–±0
0
2± ±0 7± 100 12± 1±0
–±0
0
2± ±0 7± 100 12± 1±0
–±0
–2±
0
2± ±0 7± 100 12± 1±0
–2±
–2±
ꢀEMPERAꢀURE (°C)
ꢀEMPERAꢀURE (°C)
ꢀEMPERAꢀURE (°C)
3798 G01
3798 G02
3798 G03
SENSE Current Limit Threshold
vs Temperature
VREF vs Temperature
VREF vs VIN
2.100
2.07±
2.0±0
2.02±
2.000
1.97±
1.9±0
1.92±
1.900
2.0±
2.04
2.03
2.02
2.01
2
120
100
80
60
40
20
0
MAX I
LIM
V
= 24V WIꢀH NO LOAD
NO LOAD
IN
1.99
1.98
1.97
1.96
1.9±
200μA LOAD
V
= 24V WIꢀH 200μA LOAD
IN
MIN I
MIN I
V
= 34μA
= 21μA
LIM IN_SENSE
V
LIM IN_SENSE
40
–±0
–2±
0
2± ±0 7± 100 12±
ꢀEMPERAꢀURE (°C)
1±0
–±0
0
2± ±0 7± 100 12± 1±0
10
20
2±
(V)
–2±
1±
30
3±
ꢀEMPERAꢀURE (°C)
V
IN
3798 G0±
3798 G0±
3798 G06
Maximum Oscillator Frequency
vs Temperature
Minimum Oscillator Frequency
vs Temperature
Backup Oscillator Frequency
vs Temperature
220
19±
170
14±
120
±
4
3
2
1
0
2±
20
1±
10
±
V
< V
OVP
FB
V
> V
FB
OVP
0
0
–±0
0
2± ±0 7± 100
ꢀEMPERAꢀURE (°C)
1±0
12±
–2±
±0
1±0
–±0
0
2± ±0 7±
1±0
100 12±
–±0
2±
7± 100 12±
–2±
–2±
ꢀEMPERAꢀURE (°C)
ꢀEMPERAꢀURE (°C)
3798 G06a
3799 G07
3798 G07a
3798f
4