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LTC3823EUHPBF Datasheet(PDF) 6 Page - Linear Technology

Part # LTC3823EUHPBF
Description  Fast No RSENSE Step-Down Synchronous DC/DC Controller with Differential Output Sensing, Tracking and PLL
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3823EUHPBF Datasheet(HTML) 6 Page - Linear Technology

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LTC3823
6
3823fd
TYPICAL PERFORMANCE CHARACTERISTICS
VOUT
2V/DIV
TRACK/SS
AND VFB
500mV/DIV
250ms/DIV
3823 G13
TRACK/SS
VFB
VOUT
FIGURE 12 CIRCUIT
VOUT
100mV/DIV
IL
5A/DIV
STEP
0A TO 10A
20μs/DIV
3823 G14
FIGURE 12 CIRCUIT
Track Down
Transient Response
Efficiency vs Load Current
LOAD CURRENT (A)
0.1
50
55
65
70
75
100
85
1
3823 G15
60
90
95
80
10
DISCONTINUOUS MODE
CONTINUOUS MODE
FIGURE 12 CIRCUIT
LOAD CURRENT (A)
0
0
200
600
800
1000
1400
1
5
7
3823 G16
400
1200
4
9
10
2
3
68
FIGURE 12 CIRCUIT
DISCONTINUOUS MODE
CONTINUOUS MODE
INPUT VOLTAGE (V)
0
240
260
280
300
320
340
360
510
15
20
3823 G17
25
ILOAD = 10A
ILOAD = 1A
FCB = 0V
FIGURE 12 CIRCUIT
ITH Voltage vs Load Current
Frequency vs Input Voltage
Efficiency vs Input Voltage
Frequency vs Load Current
INPUT VOLTAGE (V)
0
92
96
100
20
3823 G18
88
84
90
94
98
86
82
80
5
10
15
25
ILOAD = 10A
ILOAD = 1A
FCB = 5V
FIGURE 12 CIRCUIT
LOAD CURRENT (A)
0
400
350
300
250
200
150
100
50
0
8
3823 G19
246
10
7
135
9
FIGURE 12 CIRCUIT
DISCONTINUOUS MODE
CONTINUOUS
MODE
Current Limit Foldback
ION Current vs VIN
VFB (V)
0
60
80
100
0.3
0.5
3823 G20
40
20
0
0.1
0.2
0.4
120
140
160
0.6
VRNG = 1V
INPUT VOLTAGE, VIN (V)
0
80
100
140
15
25
3823 G21
60
40
510
20
30
35
20
0
120
RON = 82k


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