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LTC1736 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC1736
Description  5-Bit Adjustable High Efficiency Synchronous Step-Down Switching Regulator
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1736 Datasheet(HTML) 4 Page - Linear Technology

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LTC1736
TYPICAL PERFOR A CE CHARACTERISTICS
Efficiency vs Load Current
(3 Operating Modes)
LOAD CURRENT (A)
0.001
60
70
80
BURST
SYNC
CONT
10
1736 G01
50
40
20
0.01
0.1
1
30
100
90
VIN = 5V
VOUT = 1.6V
RS = 0.01Ω
fO = 300kHz
EXTVCC OPEN
LOAD CURRENT (A)
10mA
100mA
1A
10A
1736 G02
100
90
80
70
60
50
40
VIN = 5V
EXTVCC = 5V
VIN = 24V
VIN = 15V
INPUT VOLTAGE (V)
0
70
75
80
85
90
100
5
10
15
20
1736 G03
25
30
95
EXTVCC = 5V
VOUT = 1.6V
FIGURE 1
IOUT = 5A
IOUT = 0.5A
Efficiency vs Load Current
Efficiency vs Input Voltage
Efficiency vs Input Voltage
INPUT VOLTAGE (V)
0
70
75
80
85
90
100
5
10
15
20
1736 G04
25
30
95
EXTVCC OPEN
VOUT = 1.6V
FIGURE 1
IOUT = 5A
IOUT = 0.5A
LOAD CURRENT (A)
0
–0.2
–0.1
8
1736 G05
–0.3
–0.4
2
4
6
12
10
0
FCB = 0V
VIN = 15V
FIGURE 1
Load Regulation
LOAD CURRENT (A)
0
0
0.5
1.0
1.5
2.0
2.5
1
23
4
1736 G06
56
VIN = 5V
VOUT = 1.6V
RSENSE = 0.01Ω
fO = 300kHz
CONTINUOUS
MODE
Burst Mode
OPERATION
SYNCHRONIZED f = fO
ITH Voltage vs Load Current
Input and Shutdown Currents
vs Input Voltage
INPUT VOLTAGE (V)
05
0
200
500
10
20
25
1736 G07
100
400
300
0
40
100
20
80
60
15
30
35
EXTVCC OPEN
SHUTDOWN
EXTVCC = 5V
ALL VID BITS OPEN
INTVCC Line Regulation
INPUT VOLTAGE (V)
0
4
5
6
15
25
1736 G08
3
2
510
20
30
35
1
0
1mA LOAD
EXTVCC Switch Drop
vs INTVCC Load Current
INTVCC LOAD CURRENT (mA)
0
300
400
500
40
1736 G09
200
100
0
10
20
30
50



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