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LTC3405 Datasheet(PDF) 14 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) 14 Page - Linear Technology

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LTC3405
3405fa
TYPICAL APPLICATIO S
VIN
CIN**
2.2µF
CER
VIN
2.7V
TO 4.2V
LTC3405
RUN
MODE
3
4.7µH*
22pF
887k
698k
3405 TA02a
5
4
6
1
2
SW
VFB
GND
COUT1***
1µF
CER
COUT2†
22µF
TANT
VOUT
1.8V
+
*
**
***
†
MURATA LQH3C4R7M34
TAIYO YUDEN CERAMIC LMK212BJ225MG
TAIYO YUDEN CERAMIC JMK107BJ105MA
AVX TAJA226M006R
Single Li-Ion to 1.8V/300mA Regulator
Using Ceramic and Tantalum Output Capacitors
VIN
CIN**
1µF
CER
*
**
†
TAIYO YUDEN LB2016T3R3M
TAIYO YUDEN CERAMIC JMK107BJ105MA
TAIYO YUDEN CERAMIC JMK212BJ475MG
VIN
2.7V
TO 4.2V
LTC3405
RUN
MODE
3
3.3µH*
22pF
200k
1M
3405 TA03a
5
4
6
1
2
SW
VFB
GND
COUT†
4.7µF
CER
VOUT
1.8V
332k
Single Li-Ion to 1.8V/200mA Regulator
Using All Ceramic Capacitors Optimized for Smallest Footprint
OUTPUT CURRENT (mA)
0.1
10
1000
100
90
80
70
60
50
40
30
3405 TA02b
1
100
VIN = 2.7V
VIN = 4.2V
VIN = 3.6V
OUTPUT CURRENT (mA)
0.1
10
1000
100
90
80
70
60
50
40
30
3405 TA03b
1
100
VIN = 2.7V
VIN = 4.2V
VIN = 3.6V
VOUT
100mV/DIV
AC COUPLED
ILOAD
200mA/DIV
IL
200mA/DIV
3405 TA03c
40µs/DIV
VIN = 3.6V
ILOAD = 100mA TO 250mA
VOUT
100mV/DIV
AC COUPLED
ILOAD
200mA/DIV
IL
200mA/DIV
40µs/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 100mA TO 250mA
3405 TA02c



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