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LTC3716 데이터시트(PDF) 5 Page - Linear Technology

부품명 LTC3716
상세설명  2-Phase, 5-Bit VID, Current Mode, High Efficiency, Synchronous Step-Down Switching Regulator
PDF  28 Pages
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LTC3716 데이터시트(HTML) 5 Page - Linear Technology

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LTC3716
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Input Voltage
and Mode
EXTVCC Voltage Drop
INTVCC and EXTVCC Switch
Voltage vs Temperature
INPUT VOLTAGE (V)
05
0
400
1000
10
20
25
3716 G04
200
800
600
15
30
35
ON
SHUTDOWN
TEMPERATURE (
°C)
–50
4.95
5.00
5.05
25
75
3716 G06
4.90
4.85
–25
0
50
100
125
4.80
4.70
4.75
INTVCC VOLTAGE
EXTVCC SWITCHOVER THRESHOLD
Maximum Current Sense Threshold
vs Percent of Nominal Output
Voltage (Foldback)
Internal 5V LDO Line Reg
Maximum Current Sense Threshold
vs Duty Factor
INPUT VOLTAGE (V)
0
4.8
4.9
5.1
15
25
3716 G07
4.7
4.6
510
20
30
35
4.5
4.4
5.0
ILOAD = 1mA
DUTY FACTOR (%)
0
0
25
50
75
20
40
60
80
3716 G08
100
PERCENT OF NOMINAL OUTPUT VOLTAGE (%)
0
40
50
60
100
3716 G09
30
20
0
25
50
75
10
80
70
Efficiency vs Load Current
(3 Operating Modes) (Figure 13)
LOAD CURRENT (A)
0
10
30
40
50
100
70
0.01
0.1
1
3716 G01
20
80
90
60
100
10
FORCED
CONTINUOUS
MODE
Burst Mode
OPERATION
VIN = 5V
VOUT = 1.6V
FREQ = 200kHz
CONSTANT
FREQUENCY
(BURST DISABLE)
Efficiency vs Load Current
(Figure 13)
LOAD CURRENT (A)
0.1
100
80
60
40
20
0
3716 G02
1
10
100
VOUT = 1.6V
VEXTVCC = 0V
FREQ = 200kHz
VFCB = 0V
VIN = 5V
VIN = 8V
VIN = 12V
VIN = 20V
INPUT VOLTAGE (V)
5
70
80
3716 G03
60
50
10
15
20
100
90
IOUT = 20A
VOUT = 1.6V
Efficiency vs Input Voltage
(Figure 13)
CURRENT (mA)
0
150
200
250
40
3716 G05
100
50
0
10
20
30
50



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