LTC3405 Linear Technology, LTC3405 Datasheet - Page 16

• Manufacturer Part Number: LTC3405
• Description: Dual DC/DC Converter with USB Power Manager and Li-Ion Battery Charger
• Manufacturer: Linear Technology

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PART NUMBER
LTC1174/LTC1174-3.3
LTC1174-5
LTC1265
LTC1474/LTC1475
LTC1504A
LT1616
LTC1627
LTC1701
LTC1707
LTC1767
LTC1779
LTC1877
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LTC3404
LTC3405A
LTC3405A-1.5/
LTC3405A-1.8
LTC3405
TYPICAL APPLICATIO S
16
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
100
90
80
70
60
50
40
30
0.1
DESCRIPTION
High Efficiency Step-Down and Inverting DC/DC Converters
1.2A, High Efficiency Step-Down DC/DC Converter
Low Quiescent Current Step-Down DC/DC Converters
Monolithic Synchronous Step-Down Switching Regulator
600mA, 1.4MHz Step-Down DC/DC Converter
Monolithic Synchronous Step-Down Switching Regulator
Monolithic Current Mode Step-Down Switching Regulator
Monolithic Synchronous Step-Down Switching Regulator
1.5A, 1.25MHz Step-Down Switching Regulator
Monolithic Current Mode Step-Down Switching Regulator
High Efficiency Monolithic Step-Down Regulator
High Efficiency Monolithic Step-Down Regulator
1.4MHz High Efficiency Monolithic Step-Down Regulator
1.5MHz High Efficiency Monolithic Step-Down Regulator
1.5MHz High Efficiency Monolithic Step-Down Regulator
V
OUTPUT CURRENT (mA)
1
IN
= 3.6V
V
IN
V
10
IN
TO 4.2V
= 4.2V
= 2.7V
2.7V
V
IN
U
100
3405 TA05b
All Ceramic Capacitors with Lowest Parts Count
C
2.2 F
CER
IN
www.linear.com
**
1000
Single Li-Ion to 1.8V/300mA Regulator
4
1
6
V
RUN
MODE
IN
LTC3405
GND
2
SW
V
FB
3
5
887k
3405 TA05a
698k
4.7 H*
22pF
**
*
†
MURATA LQH3C4R7M34
TAIYO YUDEN CERAMIC LMK212BJ225MG
TAIYO YUDEN CERAMIC JMK212BJ475MG
AC COUPLED
COMMENTS
Monolithic Switching Regulators, I
Burst Mode Operation
Constant Off-Time, Monolithic, Burst Mode Operation
Monolithic, I
Low Cost, Voltage Mode I
6-Pin ThinSOT, V
Constant Frequency, I
Regulation, V
Constant Off-Time, I
V
1.19V V
V
3V to 25V Input, 8-Lead MSOP Package
550kHz, 6-Lead ThinSOT, V
550kHz, MS8, V
550kHz, MS8, V
1.4MHz, MS8, V
Stable with Ceramic Output Capacitor
Fixed Output Version of LTC3405A
100mV/DIV
200mA/DIV
200mA/DIV
IN
IN
from 2.5V to 5.5V
from 2.65V to 8.5V
I
V
LOAD
OUT
C
4.7 F
CER
REF
OUT
I
L
V
1.8V
V
I
OUT
Pin, Constant Frequency, I
†
LOAD =
OUT
IN
IN
= 3.6V
from 2.65V to 8.5V
IN
IN
IN
to 250mA, I
IN
100mA TO 250mA
Up to 10V, I
Up to 6V, I
Up to 6V, I
from 3.6V to 25V
OUT
OUT
to 500mA, 1MHz Operation,
OUT
to 500mA, Secondary Winding
IN
40 s/DIV
Q
Q
Q
to 500mA, V
from 2.5V to 9.8V
= 10 A, 8-Pin MSOP
Q
= 10 A, I
= 10 A, I
= 10 A, I
LINEAR TECHNOLOGY CORPORATION 2001
OUT
to 450mA,
OUT
OUT
OUT
OUT
IN
LT/TP 0302 2K • PRINTED IN USA
to 600mA,
to 600mA at V
to 600mA at V
from 4V to 10V
to 600mA at V
3405 TA05c
IN
IN
sn3405 3405fs
IN
= 3.3V
= 3.3V
= 5V