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LTC3411A Datasheet(Fiches technique) 5 Page - Linear Technology

Numéro de pièce LTC3411A
Description  1.25A, 4MHz, Synchronous Step-Down DC/DC Converter
Télécharger  20 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
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 5 page
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LTC3411A
5
3411afa
Frequency Variation vs VIN
RDS(ON) vs Input Voltage
RDS(ON) vs Temperature
VIN (V)
6
4
2
0
–2
–4
–6
–8
3411A G10
2.5
4.0
5.0
5.5
3.0
3.5
4.5
INPUT VOLTAGE (V)
0.25
0.20
0.15
0.10
0.05
0.0
3411A G11
2.5
4.0
5.0
5.5
3.0
3.5
4.5
MAIN SWITCH
SYNCHRONOUS SWITCH
TEMPERATURE (°C)
0.30
0.25
0.20
0.15
0.10
0.05
0.0
3411A G12
–50
25
75
100
125
–25
0
50
MAIN SWITCH
SYNCHRONOUS SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS T
A = 25°C, VIN = 3.6V, fO = 1MHz, unless
otherwise noted.
Dynamic Supply Current vs Input
Voltage
Dynamic Supply Current vs
Temperature
VIN (V)
0.001
3.0
3.5
4.0
4.5
5.0
5.5
2.5
0.1
100
3411A G13
0.01
1
10
FORCED CONTINUOUS
PULSE SKIP
Burst Mode
OPERATION
VOUT = 1.8V
ILOAD = 0A
TEMPERATURE (°C)
0.001
–25
0
25
50
75
100
125
–50
0.1
100
3411A G14
0.01
1
10
FORCED CONTINUOUS
PULSE SKIP
Burst Mode
OPERATION
VOUT = 1.8V
ILOAD = 0A
INPUT VOLTAGE(V)
2500
2000
1500
1000
500
0
3411A G15
03
5
6
12
4
SYNCHRONOUS SWITCH
MAIN SWITCH
TEMPERATURE (°C)
600
500
400
300
200
100
0
3411A G16
–50
25
75
100
125
–25
0
50
MAIN SWITCH
SYNCHRONOUS SWITCH
VIN = 3.6V
VOUT = 1.8V
ILOAD = 50mA
SW
2V/DIV
VOUT
50mV/DIV
AC COUPLED
IL
200mA/DIV
3411A G17
4μs/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 5mA
SW
2V/DIV
VOUT
50mV/DIV
AC COUPLED
IL
200mA/DIV
3411A G18
4μs/DIV
Switch Leakage vs Input Voltage
Switch Leakage vs Temperature
Burst Mode Operation
Pulse Skippng Mode




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Datasheet Download



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