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LTC3404 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3404
Description  1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3404 Datasheet(HTML) 4 Page - Linear Technology

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4
LTC3404
TYPICAL PERFOR A CE CHARACTERISTICS
Oscillator Frequency
vs Temperature
Efficiency vs Output Current
TEMPERATURE (
°C)
–50
0.814
0.809
0.804
0.799
0.794
0.789
0.784
25
75
3404 G05
–25
0
50
100
125
VIN = 3.6V
Oscillator Frequency
vs Supply Voltage
INPUT VOLTAGE (V)
1
0
0.5
0.6
0.7
5678
3404 G09
0.4
0.3
0
0.1
2
3
4
0.2
0.9
0.8
SYNCHRONOUS
SWITCH
MAIN
SWITCH
Reference Voltage
vs Temperature
Output Voltage vs Load Current
RDS(ON) vs Input Voltage
RDS(ON) vs Temperature
DC Supply Current
vs Input Voltage
TEMPERATURE (
°C)
–50
–25
0.3
0.4
0.6
0.7
0.8
75
100
1.2
3404 G10
0.5
0
25
50
125
0.9
1.0
1.1
VIN = 3V
VIN = 5V
SYNCHRONOUS SWITCH
MAIN SWITCH
OUTPUT CURRENT (mA)
75
85
95
70
80
90
0.1
10
100
1000
3404 G04
65
1
VIN = 3V
VIN = 6V
VOUT = 1.8V
L = 4.7
µH
VIN = 4.2V
VIN = 3.6V
OUTPUT CURRENT (mA)
80
75
85
90
95
100
0.1
10
100
1000
3404 G4a
70
65
1
VIN = 6V
VIN = 3.6V
VOUT = 3.1V
L = 4.7
µH
VIN = 4.2V
Efficiency vs Output Current
TEMPERATURE (
°C)
–50
1.55
1.50
1.45
1.40
1.35
1.30
1.25
100
75
3404 G06
–25
0
50
25
125
VIN = 3.6V
SUPPLY VOLTAGE (V)
1.25
1.35
1.30
8
3404 G07
2
4
6
1.55
1.50
1.45
1.40
LOAD CURRENT (mA)
0
1.75
1.76
1.77
1.78
1.80
1.81
1.82
200
400
3404 G08
1.79
600
800
1.83
PULSE SKIPPING MODE
VIN = 3.6V
L = 4.7
µF
INPUT VOLTAGE (V)
0
200
500
2
4
5
3404 G11
100
400
300
250
150
50
450
350
3
6
78
VOUT = 1.8V
PULSE SKIPPING
MODE
Burst Mode
OPERATION


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