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LTC3405 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3405
Description  1.5MHz, 300mA Synchronous Step-Down Regulator in ThinSOT
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3405 Datasheet(HTML) 4 Page - Linear Technology

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LTC3405
3405fa
RDS(ON) vs Temperature
Dynamic Supply Current
Dynamic Supply Current
vs Temperature
Switch Leakage vs Temperature
Switch Leakage vs Input Voltage
TEMPERATURE (°C)
–50
1.2
1.0
0.8
0.6
0.4
0.2
0
25
75
–25
0
50
100
125
3405 G11
SYNCHRONOUS SWITCH
MAIN SWITCH
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
SUPPLY VOLTAGE (V)
2
1600
1400
1200
1000
800
600
400
200
0
34
5
6
3405 G12
VOUT = 1.8V
ILOAD = 0A
PULSE SKIPPING MODE
Burst Mode OPERATION
TEMPERATURE (°C)
–50
600
500
400
300
200
100
0
25
75
–25
0
50
100
125
VIN = 3.6V
VOUT = 1.8V
ILOAD = 0A
3405 G13
PULSE SKIPPING MODE
Burst Mode OPERATION
TEMPERATURE (°C)
–50
160
140
120
100
80
60
40
20
0
25
75
–25
0
50
100
125
VIN = 5.5V
RUN = 0V
3405 G14
MAIN SWITCH
SYNCHRONOUS
SWITCH
INPUT VOLTAGE (V)
0
60
50
40
30
20
10
0
1
23
4
3405 G15
56
RUN = 0V
MAIN SWITCH
SYNCHRONOUS
SWITCH
SW
5V/DIV
VOUT
50mV/DIV
AC COUPLED
IL
100mA/DIV
3405 G16
5µs/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 20mA
SW
5V/DIV
VOUT
20mV/DIV
AC
COUPLED
IL
100mA/DIV
3405 G17
500ns/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 20mA
RUN
2V/DIV
VOUT
1V/DIV
IL
200mA/DIV
3405 G18
100µs/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 250mA
3405 G19
VOUT
100mV/DIV
AC
COUPLED
ILOAD
200mA/DIV
IL
200mA/DIV
40µs/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 0mA TO 250mA
PULSE SKIPPING MODE
TYPICAL PERFOR A CE CHARACTERISTICS
(From Figure 1a Except for the Resistive Divider Resistor Values)
Burst Mode Operation
Pulse Skipping Mode Operation
Start-Up from Shutdown
Load Step



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