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LTC3813 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC3813
Description  100V Current Mode Synchronous Step-Up Controller
PDF  32 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3813 Datasheet(HTML) 5 Page - Linear Technology

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LTC3813
5
3813fb
Load Transient Response
Start-Up
Overcurrent Operation
Efficiency vs Load Current
Frequency vs Input Voltage
Frequency vs Load Current
Current Sense Threshold
vs ITH Voltage
Off-Time vs IOFF Current
Off-Time vs VOFF Voltage
TYPICAL PERFORMANCE CHARACTERISTICS
VOUT
200mV/
DIV
100μs/DIV
FIGURE 14 CIRCUIT
VIN = 12V
0A TO 4A LOAD STEP
3813 G01
IOUT
2A/DIV
3813 G02
1ms/DIV
VOUT
20V/DIV
SS
4V/DIV
IL
5A/DIV
FRONT PAGE CIRCUIT
VIN = 24V
ILOAD = 2A
3813 G03
500μs/DIV
VOUT
20V/DIV
IL
5A/DIV
FRONT PAGE CIRCUIT
VIN = 24V
RSHORT = 1Ω
LOAD (A)
0
90
95
4
85
80
1
2
3
100
3813 G04
VIN = 12V
VOUT = 24V
VIN = 5V
INPUT VOLTAGE (V)
10
260
280
300
30
35
240
220
200
15
20
25
40
3813 G05
ILOAD = 0A
ILOAD = 1A
FRONT PAGE CIRCUIT
200
220
210
230
240
250
260
280
270
LOAD CURRENT (A)
0
1
2
3
4
3813 G06
VIN = 12V
VIN = 24V
FRONT PAGE CIRCUIT
ITH VOLTAGE (V)
0
–400
–300
–200
–100
0
100
200
400
0.5
1
1.5
2
3813 G07
2.5
3
300
VRNG = 2V
1.4V
1V
0.7V
0.5V
IOFF CURRENT (μA)
10
10
100
1000
10000
100
1000
10000
3813 G08
VOFF = INTVCC
VOFF VOLTAGE (V)
0
400
500
700
1.5
2.5
3813 G09
300
200
0.5
1
23
100
0
600
IOFF = 300μA



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