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LTC3408 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3408
Description  1.5MHz, 600mA Synchronous Step-Down Regulator with Bypass Transistor
PDF  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3408 Datasheet(HTML) 4 Page - Linear Technology

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4
LTC3408
3408f
Output Voltage vs Load Current
RDS(ON) vs Input Voltage
RDS(ON) vs Temperature
Dynamic Supply Current
vs Supply Voltage
(From Figure 1)
TYPICAL PERFOR A CE CHARACTERISTICS
Frequency vs VOUT
VOUT (V)
0
1600
1400
1200
1000
800
600
400
0.2
0.4
0.6
0.8
3408 G08
1.0
1.2
TA = 25°C
VIN = 3.6V
LOAD CURRENT (mA)
0
1.844
1.834
1.824
1.814
1.804
1.794
1.784
1.774
100
500
700
3408 G09
400
900 1000
200 300
600
800
TA = 25°C
VIN = 3.6V
INPUT VOTLAGE (V)
0
0.4
0.5
0.7
35
3408 G10
0.3
0.2
12
46
7
0.1
0
0.6
TA = 25°C
MAIN
SWITCH
BYPASS
SWITCH
SYNCHRONOUS
SWITCH
TEMPERATURE (
°C)
–50
0.4
0.5
0.7
25
75
3408 G11
0.3
0.2
–25
0
50
100
125
0.1
0
0.6
VIN = 3V
VIN = 4.2V
VIN = 4.2V
MAIN
SWITCH
BYPASS
SWITCH
SYNCHRONOUS SWITCH
VIN = 3.6V
VIN = 2.7V
SUPPLY VOLTAGE (V)
2
2500
3000
3500
6
3408 G12
2000
1500
0
3
4
5
1000
500
4500
4000
TA = 25°C
VOUT = 1.8V
ILOAD = 0A
FORCED CONTINUOUS
MODE
Switch Leakage vs Temperature
Switch Leakage vs Input Voltage
Start-Up from Shutdown
TEMPERATURE (
°C)
–50
200
250
300
25
75
3408 G13
150
100
–25
0
50
100
125
50
0
VIN = 5.5V
RUN = 0V
MAIN SWITCH
SYNCHRONOUS SWITCH
INPUT VOLTAGE (V)
0
0
20
40
60
80
120
1
23
4
3408 G14
56
100
TA = 25°C
RUN = 0V
SYNCHRONOUS
SWITCH
MAIN
SWITCH
RUN
2V/DIV
VOUT
1V/DIV
IL
500mA/DIV
40
µs/DIV
VIN = 3.6V
VREF = 0.6V
RLOAD = 3Ω
3408 G15



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