lt3782aeufd Linear Technology Corporation, lt3782aeufd Datasheet - Page 5

• Manufacturer Part Number: lt3782aeufd
• Description: 2-phase Step-up Dc/dc Controller
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
600
500
400
300
200
100
0
Switching Frequency vs R
20
40
60
105
100
95
90
85
80
14
12
10
–2
8
6
4
2
0
80
100
R
0
Switching Frequency
vs Duty Cycle
FREQ
V
(Charging 2μF)
GBIAS
100
(kΩ)
120
200
SWITCHING FREQUENCY (kHz)
250μ
vs I
140
GBIAS
FREQ
160
300
TIME (s)
180
3782A G04
500μ
at Start-Up
200
400
V
I
GBIAS
GBIAS
750μ
2.446
2.444
2.442
2.440
2.438
2.436
2.434
500
3782A G06
3782A G08
Reference Voltage
vs Temperature
0
600
1m
800
700
600
500
400
300
200
100
0
25
JUNCTION TEMPERATURE (°C)
50
75
100
1000
900
800
700
600
500
400
300
200
100
120
110
100
125
90
80
70
60
50
40
0
3782A G05
0
0
SGATE (Low) to BGATE (High)
Delay vs V
Maximum Duty Cycle Limit
vs V
T
A
150
= 25°C, unless otherwise noted.
0.3
DCL
0.5
0.6
(R
DELAY
SET
0.9
1.0
V
70
67
64
61
58
55
= 80k)
V
DELAY
–45
DCL
(R
1.2
Current Limit Threshold
vs Temperature
(V)
SET
(V)
1.5
–20
1.5
= 80k)
1.8
5
TEMPERATURE (°C)
2.0
2.1
3782A G07
3782A G09
30
LT3782A
2.5
2.4
55
80
105
3782A G10
3782af
5
130