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LTC3405 Scheda tecnica(PDF) 4 Page - Linear Technology

Il numero della parte LTC3405
Spiegazioni elettronici  1.5MHz, 600mA Synchronous Step-Down egulator in ThinSOT
PDF  16 Pages
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Produttore elettronici  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo LINER - Linear Technology

LTC3405 Scheda tecnica(HTML) 4 Page - Linear Technology

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4
LTC3406
LTC3406-1.5/LTC3406-1.8
3406fa
TYPICAL PERFOR A CE CHARACTERISTICS
Oscillator Frequency vs
Supply Voltage
Output Voltage vs Load Current
RDS(ON) vs Input Voltage
(From Figure1a Except for the Resistive Divider Resistor Values)
SUPPLY VOLTAGE (V)
2
1.8
1.7
1.6
1.5
1.4
1.3
1.2
34
5
6
3406 G07
LOAD CURRENT (mA)
0
200 300 400 500 600 700 800
1.844
1.834
1.824
1.814
1.804
1.794
1.784
1.774
3406 G08
100
900
VIN = 3.6V
INPUT VOLTAGE (V)
1
0
0.4
0.5
0.7
46
3406 G09
0.3
0.2
23
57
0.1
0
0.6
MAIN
SWITCH
SYNCHRONOUS
SWITCH
RDS(ON) vs Temperature
Supply Current vs Supply Voltage
Supply Current vs Temperature
Switch Leakage vs Temperature
Switch Leakage vs Input Voltage
Burst Mode Operation
TEMPERATURE (°C)
–50
0.4
0.5
0.7
25
75
3406 G10
0.3
0.2
–25
0
50
100
125
0.1
0
0.6
MAIN SWITCH
SYNCHRONOUS SWITCH
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
SUPPLY VOLTAGE (V)
2
0
5
15
20
25
50
35
3
4
3406 G11
10
40
45
30
5
6
VOUT = 1.8V
ILOAD = 0A
TEMPERATURE (°C)
–50
0
5
15
20
25
50
35
0
50
75
3406 G12
10
40
45
30
–25
25
100
125
VIN = 3.6V
VOUT = 1.8V
ILOAD = 0A
TEMPERATURE (°C)
–50
200
250
300
25
75
3406 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
3406 G14
56
100
RUN = 0V
SYNCHRONOUS
SWITCH
MAIN
SWITCH
SW
5V/DIV
IL
200mA/DIV
VOUT
100mV/DIV
AC COUPLED
4µs/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 50mA
3406 G15



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