LTC3780EG Linear Technology, LTC3780EG Datasheet - Page 5

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LTC3780EG

Manufacturer Part Number
LTC3780EG
Description
IC,SMPS CONTROLLER,CURRENT-MODE,CMOS,SSOP,24PIN,PLASTIC
Manufacturer
Linear Technology
Datasheet

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TYPICAL PERFOR A CE CHARACTERISTICS
2500
2000
1500
1000
6.05
6.00
5.95
5.90
5.85
5.80
5.75
5.70
5.65
5.60
5.55
100
500
90
80
70
60
50
40
0
0.01
–50
Efficiency vs Output Current
(Boost Operation)
INTV
Voltage vs Temperature
0
Supply Current vs Input Voltage
CCM
BURST
DCM
–25
EXTV
5
CC
and EXTV
CC
10
0
TEMPERATURE (°C)
SWITCHOVER THRESHOLD
0.1
INPUT VOLTAGE (V)
SHUTDOWN
INTV
V
STANDBY
FCB
I
25
15
LOAD
CC
= 0V
VOLTAGE
CC
(A)
50
20
Switch
1
75
25
V
V
W
IN
OUT
100
= 6V
30
= 12V
3780 G01
3780 G07
3780 G04
U
125
10
35
100
6.5
6.0
4.5
3.5
90
80
70
60
50
40
5.5
5.0
4.0
3
0
5
4
2
1
0.01
–50 –25
Efficiency vs Output Current
0
EXTV
vs Temperature
Internal 6V LDO Line Regulation
BURST
5
DCM
CC
Switch Resistance
10
0
TEMPERATURE (°C)
0.1
INPUT VOLTAGE (V)
CCM
I
25
15
LOAD
(A)
50
20
1
25
75
V
V
IN
OUT
= 12V
100
30
= 12V
T
3780 G02
3780 G05
3780 G08
A
= 25°C unless otherwise noted.
125
10
35
–0.1
–0.3
–0.4
–0.5
120
100
–0.2
100
80
60
40
20
90
80
70
60
50
40
0
0
0.01
1
Efficiency vs Output Current
(Buck Operation)
Load Regulation
0
EXTV
FCB = 0V
V
OUT
CC
= 12V
10
SC
1
Voltage Drop
LOAD CURRENT (A)
0.1
CURRENT (mA)
20
DCM
2
I
LOAD
CCM
LTC3780
(A)
30
3
1
V
IN
V
IN
V
V
= 6V
V
IN
OUT
40
= 18V
IN
4
= 18V
= 12V
= 12V
3780 G03
3780 G06
3780 G09
5
3780f
50
10
5

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