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LTC3405A Scheda tecnica(PDF) 14 Page - Linear Technology

Il numero della parte LTC3405A
Spiegazioni elettronici  1.5MHz, 300mA Synchronous Step-Down Regulator in ThinSOT
PDF  16 Pages
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Produttore elettronici  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo LINER - Linear Technology

LTC3405A Scheda tecnica(HTML) 14 Page - Linear Technology

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LTC3405A
3405afa
Single Li-Ion to 1.2V/300mA Regulator
Using Ceramic and Tantalum Output Capacitors
VIN
CIN**
2.2µF
CER
VIN
2.7V
TO 4.2V
LTC3405A
RUN
MODE
3
4.7µH*
22pF
887k
1.774M
3405A TA01a
5
4
6
1
2
SW
VFB
GND
COUT1***
1µF
CER
COUT2†
22µF
TANT
VOUT
1.2V
+
*
**
***
†
MURATA LQH3C4R7M34
TAIYO YUDEN CERAMIC LMK212BJ225MG
TAIYO YUDEN CERAMIC JMK107BJ105MA
AVX TAJA226M006R
OUTPUT CURRENT (mA)
0.1
10
1000
100
90
80
70
60
50
40
30
3405A TA01b
1
100
VIN = 2.7V
VIN = 4.2V
VIN = 3.6V
VOUT
100mV/DIV
AC COUPLED
ILOAD
200mA/DIV
IL
200mA/DIV
20µs/DIV
VIN = 3.6V
VOUT = 1.2V
ILOAD = 100mA TO 300mA
3405A TA01c
TYPICAL APPLICATIO S
Single Li-Ion to 1V/200mA Regulator
Using All Ceramic Capacitors Optimized for Small Footprint
VIN
CIN**
4.7µF
CER
VIN
2.7V
TO 4.2V
LTC3405A
RUN
MODE
3
3.3µH*
22pF
249k
1M
3405A TA02a
*
**
TAIYO YUDEN LM2016T3R3M
TAIYO YUDEN CERAMIC JMK212BJ475MG
5
4
6
1
2
SW
VFB
GND
COUT**
4.7µF
CER
VOUT
1V
OUTPUT CURRENT (mA)
0.1
10
1000
90
80
70
60
50
40
30
3405A TA02b
1
100
VIN = 2.7V
VIN = 4.2V
VIN = 3.6V
VOUT
100mV/DIV
AC COUPLED
ILOAD
100mA/DIV
IL
100mA/DIV
20µs/DIV
VIN = 3.6V
VOUT = 1V
ILOAD = 100mA TO 200mA
3405A TA02c



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