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LTC3407AB Datasheet(PDF) 5 Page - Linear Technology

Part # LTC3407AB
Description  1.25A, 4MHz, Synchronous Step-Down DC/DC Converter
PDF  22 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3407AB Datasheet(HTML) 5 Page - Linear Technology

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background image
LTC3565
5
3565fb
Frequency Variation vs Input
Voltage
RDS(ON) vs Input Voltage
RDS(ON) vs Temperature
INPUT VOLTAGE (V)
6
4
2
0
–2
–4
–6
–8
3565 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
3565 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
3565 G12
–50
25
75
100
125
–25
0
50
MAIN SWITCH
SYNCHRONOUS SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS T
J = 25°C, VIN = 3.6V, fO = 1MHz, unless
otherwise noted.
Dynamic Supply Current vs Input
Voltage
Dynamic Supply Current vs
Temperature
INPUT VOLTAGE (V)
0.001
3.0
3.5
4.0
4.5
5.0
5.5
2.5
0.1
100
3565 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
3565 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
3565 G15
03
5
6
12
4
SYNCHRONOUS SWITCH
MAIN SWITCH
Switch Leakage vs Input Voltage
TEMPERATURE (°C)
600
500
400
300
200
100
0
3565 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
3565 G17
4μs/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 5mA
SW
2V/DIV
VOUT
50mV/DIV
AC COUPLED
IL
200mA/DIV
3565 G18
4μs/DIV
Switch Leakage vs Temperature
Burst Mode Operation
Pulse Skipping Mode



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