Datasheet

LT3782A
5
3782afb
JUNCTION TEMPERATURE (°C)
0
REFERENCE VOLTAGE (V)
2.446
2.444
2.442
2.440
2.438
2.436
2.434
50
100 12575
3782A G05
25 150
R
FREQ
(k)
0
FREQUENCY (kHz)
600
500
400
300
200
100
160
3782A G04
4020 60 100 140
80
120
200
180
TIME (s)
0
V
GBIAS
(V)
14
10
6
2
12
8
4
0
–2
I
GBIAS
(mA)
800
600
400
200
700
500
300
100
0
750µ
3782A G06
250µ 500µ
1m
V
GBIAS
I
GBIAS
V
DELAY
(V)
0
DELAY (ns)
1000
900
800
600
700
500
400
300
200
100
0
2.0
3782A G07
0.5
1.0
1.5
2.5
SWITCHING FREQUENCY (kHz)
100
DUTY CYCLE (%)
105
100
95
90
85
80
500
3782A G08
200
300
400
600
V
DCL
(V)
0
MAXIMUM DUTY CYCLE (%)
2.4
3782A G09
0.6
1.2
1.8
2.1
0.3
0.9
1.5
120
110
100
90
80
70
60
50
40
Switching Frequency vs R
FREQ
Reference Voltage
vs Temperature
V
GBIAS
vs I
GBIAS
at Start-Up
(Charging 2μF)
SGATE (Low) to BGATE (High)
Delay vs V
DELAY
(R
SET
= 80k)
Switching Frequency
vs Duty Cycle
Maximum Duty Cycle Limit
vs V
DCL
(R
SET
= 80k)
T
J
= 25°C, unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
TEMPERATURE (°C)
–45
CURRENT LIMIT THRESHOLD (mV)
3782A G10
5
55
105
130
–20
30
80
70
67
64
61
58
55
Current Limit Threshold
vs Temperature