ltc3405a Linear Technology Corporation, ltc3405a Datasheet - Page 16

• Manufacturer Part Number: ltc3405a
• Description: 1.5mhz, 300ma Synchronous Step-down Regulator In Thinsot
• Manufacturer: Linear Technology Corporation

LTC3405A
RELATED PARTS
PART NUMBER
LTC1174/LTC1174-3.3
LTC1174-5
LTC1265
LTC1474/LTC1475
LTC1504A
LT1616
LTC1627
LTC1701
LTC1707
LTC1767
LTC1779
LTC1877
LTC1878
LTC3404
LTC3405A-1.5/
LTC3405A-1.8
16
TYPICAL APPLICATIO
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
90
80
70
60
50
40
30
0.1
V
OUT
= 1.5V
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 Regulators
OUTPUT CURRENT (mA)
1
●
FAX: [phone]
V
V
IN
IN
= 4.2V
= 2.7V
10
Using All Ceramic Capacitors Optimized for Smallest Footprint
V
IN
U
= 3.6V
100
TO 4.2V
2.7V
3405A TA03b
●
V
IN
www.linear.com
Single Li-Ion to 1.5V/150mA Regulator
1000
**
C
2.2µF
CER
*
IN
TAIYO YUDEN LB2012T2R2M
TAIYO YUDEN CERAMIC LMK212BJ225MG
**
4
1
6
V
RUN
MODE
IN
LTC3405A
GND
2
V
SW
FB
3
5
AC COUPLED
COMMENTS
Monolithic Switching Regulators, I
Burst Mode Operation
Constant Off-Time, Monolithic, Burst Mode Operation
Low Cost, Voltage Mode I
6-Pin ThinSOT, V
Regulation, V
V
1.19V V
V
3V to 25V Input, 8-Lead MSOP Package
1.4MHz, MS8, V
Fixed Output Versions of the LTC3405A
100mV/DIV
200mA/DIV
100mA/DIV
Monolithic, I
Constant Frequency, I
Constant Off-Time, I
550kHz, 6-Lead ThinSOT, V
550kHz, MS8, V
550kHz, MS8, V
1M
IN
IN
3405A TA03a
2.2µH*
22pF
887k
from 2.5V to 5.5V
from 2.65V to 8.5V
I
V
LOAD
OUT
REF
I
L
V
V
I
LOAD =
Pin, Constant Frequency, I
IN
OUT
OUT
IN
= 3.6V
from 2.65V to 8.5V
IN
IN
= 1.5V
IN
to 250mA, I
IN
50mA TO 150mA
Up to 10V, I
Up to 6V, I
Up to 6V, I
C
2.2µF
CER
from 3.6V to 25V
OUT
OUT
OUT
**
to 500mA, 1MHz Operation,
OUT
to 500mA, Secondary Winding
V
1.5V
IN
OUT
20µs/DIV
Q
Q
Q
to 500mA, V
from 2.5V to 9.8V
= 10µA, 8-Pin MSOP
Q
= 10µA, I
= 10µA, I
© LINEAR TECHNOLOGY CORPORATION 2002
= 10µA, I
OUT
LT/TP 0604 1K REV A • PRINTED IN USA
to 450mA,
OUT
OUT
OUT
OUT
IN
to 600mA,
to 600mA at V
to 600mA at V
from 4V to 10V
to 600mA at V
3405A TA03c
IN
IN
IN
= 3.3V
= 3.3V
= 5V
3405afa