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LTC3419 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3419
Description  Dual Monolithic 600mA Synchronous Step-Down Regulator
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3419 Datasheet(HTML) 4 Page - Linear Technology

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LTC3419
4
3419f
VIN (V)
2.5
3.0
2.5
1.5
2.0
1.0
0.5
0
4.0
5.0
3419 G07
3.0
3.5
4.5
5.5
MAIN SWITCH
SYNCHRONOUS
SWITCH
VIN (V)
2.5
0.50
0.45
0.35
0.40
0.30
0.25
0.20
4.0
5.0
3419 G08
3.0
3.5
4.5
6.0
5.5
MAIN SWITCH
SYNCHRONOUS
SWITCH
TEMPERATURE (
°C)
–50
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
25
75
3419 G04
–25
0
50
100
125
TEMPERATURE (
°C)
–50
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.8
1.9
25
75
3419 G05
–25
0
50
100
125
VIN = 4.2V
VIN = 3.6V
VIN = 2.7V
TEMPERATURE (
°C)
–50
60
50
40
30
20
10
25
75
3419 G06
–25
0
50
100
ILOAD = 0A
RUN1 = RUN2 = VIN
VIN = 5.5V
VIN = 2.7V
VIN (V)
2.5
100
90
70
80
60
40
50
30
4.0
5.0
3419 G03
3.0
3.5
4.5
5.5
VOUT = 1.8V
IOUT = 600mA
IOUT = 100mA
IOUT = 1mA
IOUT = 0.1mA
IOUT = 10mA
TYPICAL PERFORMANCE CHARACTERISTICS
Burst Mode Operation
Pulse Skip Mode Operation
Efficiency vs Input Voltage
Reference Voltage
vs Temperature
Oscillator Frequency
vs Temperature
Supply Current
vs Temperature
Switch Leakage vs Input Voltage
Switch On-Resistance vs
Input Voltage
Switch On-Resistance vs
Temperature
TEMPERATURE (
°C)
–50
0.6
0.5
0.4
0.3
0.2
0.1
25
75
3419 G09
–25
0
50
100
125
SYNCHRONOUS SWITCH
MAIN SWITCH
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
VIN = 3.6V
VOUT = 1.8V
ILOAD = 25mA
SW
2V/DIV
IL
100mA/DIV
VOUT
50mV/DIV
AC-COUPLED
2
μs/DIV
3419 G01
VIN = 3.6V
VOUT = 1.8V
ILOAD = 5mA
SW
2V/DIV
IL
100mA/DIV
VOUT
50mV/DIV
AC-COUPLED
5
μs/DIV
3419 G02
TA = 25°C, VIN = 3.6V, unless otherwise noted.



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