LTC1736C Просмотр технического описания (PDF) - Linear Technology
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LTC1736C Datasheet PDF : 28 Pages
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LTC1736
TYPICAL PERFOR A CE CHARACTERISTICS
Efficiency vs Load Current
(3 Operating Modes)
100
EXTVCC OPEN
90
BURST
80
SYNC
70
60
CONT
50
40
30
20
0.001
VIN = 5V
VOUT = 1.6V
RS = 0.01Ω
fO = 300kHz
0.01
0.1
1
10
LOAD CURRENT (A)
1736 G01
Efficiency vs Input Voltage
100
EXTVCC OPEN
VOUT = 1.6V
95 FIGURE 1
90
IOUT = 5A
85
IOUT = 0.5A
80
75
70
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
1736 G04
Input and Shutdown Currents
vs Input Voltage
500
100
ALL VID BITS OPEN
400
EXTVCC OPEN
80
300
60
200
40
SHUTDOWN
100
20
EXTVCC = 5V
0
0
0 5 10 15 20 25 30 35
INPUT VOLTAGE (V)
1736 G07
Efficiency vs Load Current
100
EXTVCC = 5V
90
VIN = 5V
80
70
VIN = 15V
VIN = 24V
60
50
40
10mA
100mA
1A
LOAD CURRENT (A)
10A
1736 G02
Load Regulation
0
–0.1
FCB = 0V
VIN = 15V
FIGURE 1
–0.2
–0.3
–0.4
0
2
4
6
8 10 12
LOAD CURRENT (A)
1736 G05
INTVCC Line Regulation
6
1mA LOAD
5
4
3
2
1
0
05
10 15 20 25 30 35
INPUT VOLTAGE (V)
1736 G08
Efficiency vs Input Voltage
100
EXTVCC = 5V
VOUT = 1.6V
95 FIGURE 1
90
IOUT = 5A
85
IOUT = 0.5A
80
75
70
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
1736 G03
ITH Voltage vs Load Current
2.5
VIN = 5V
VOUT = 1.6V
2.0
RSENSE = 0.01Ω
fO = 300kHz
1.5 CONTINUOUS
MODE
1.0
SYNCHRONIZED f = fO
Burst Mode
0.5
OPERATION
0
012
3
4
56
LOAD CURRENT (A)
1736 G06
EXTVCC Switch Drop
vs INTVCC Load Current
500
400
300
200
100
0
0
10
20
30
40
50
INTVCC LOAD CURRENT (mA)
1736 G09
4
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