LTC3441
16
3441fc
For more information www.linear.com/LTC3441
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
LINEAR TECHNOLOGY CORPORATION 2003
LT 1016 REV C • PRINTED IN USA
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LT
®
1613 550mA (I
SW
) 1.4MHz High Efficiency Step-Up DC/DC Converter V
IN
: 0.9V to 10V, V
OUT(MAX)
: 34V, I
Q
: 3mA,
I
SD
: ≤ 1µA, ThinSOT™
LT1615/LT1615-1 300mA/80mA (I
SW
) Constant Off-Time, High Efficiency Step-Up
DC/DC Converter
V
IN
: 1.2V to 15V, V
OUT(MAX)
: 34V, I
Q
: 20µA,
I
SD
: ≤ 1µA, ThinSOT
LT1616 500mA (I
OUT
) 1.4MHz High Efficiency Step-Down DC/DC Converter High Efficiency, V
IN
: 3.6V to 25V, V
OUT(MIN)
: 1.25V, I
Q
: 1.9mA,
I
SD
: ≤ 1µA, ThinSOT
LT1776 500mA (I
OUT
) 200kHz High Efficiency Step-Down DC/DC Converter High Efficiency, V
IN
: 7.4V to 40V, V
OUT(MIN)
: 1.24V, I
Q
: 3.2mA,
I
SD
: 30µA, N8, S8
LTC1877 600mA (I
OUT
) 550kHz Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.7V to 10V, V
OUT(MIN)
: 0.8V, I
Q
: 10µA,
I
SD
: ≤ 1µA, MS8
LTC1878 600mA (I
OUT
) 550kHz Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.7V to 6V, V
OUT(MIN)
: 0.8V, I
Q
: 10µA,
I
SD
: ≤ 1µA, MS8
LTC1879 1.2A (I
OUT
) 550kHz Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.7V to 10V, V
OUT(MIN)
: 0.8V, I
Q
: 15µA,
I
SD
: ≤ 1µA, TSSOP16
LT1930/LT1930A 1A (I
SW
) 1.2MHz/2.2MHz High Efficiency Step-Up DC/DC Converter V
IN
: 2.6V to 16V, V
OUT(MAX)
: 34V, I
Q
: 5.5mA,
I
SD
: ≤ 1µA, ThinSOT
LTC3405/
LTC3405A
300mA (I
OUT
) 1.5MHz Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.7V to 6V, V
OUT(MIN)
: 0.8V, I
Q
: 20µA,
I
SD
: ≤ 1µA, ThinSOT
LTC3406/
LTC3406B
600mA (I
OUT
) 1.5MHz Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
: 0.6V, I
Q
: 20µA,
I
SD
: ≤ 1µA, ThinSOT
LTC3407 600mA (I
OUT
) ×2 1.5MHz Dual Synchronous Step-Down
DC/DC Converter
96% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
: 0.6V, I
Q
: 40µA,
I
SD
: ≤ 1µA, 10-Lead MS
LTC3411 1.25A (I
OUT
) 4MHz Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
: 0.8V, I
Q
: 60µA,
I
SD
: ≤ 1µA, 10-Lead MS
LTC3412 2.5A (I
OUT
) 4MHz Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
: 0.8V, I
Q
: 60µA,
I
SD
: ≤ 1µA, TSSOP16E
LTC3440 600mA (I
OUT
) 2MHz Synchronous Buck-Boost DC/DC Converter 95% Efficiency, V
IN
: 2.5V to 5.5V, V
OUT(MIN)
: 2.5V, I
Q
: 25µA,
I
SD
: ≤ 1µA, 10-Lead MS
PCMCIA Powered GSM Modem
SW1
PV
IN
V
IN
SHDN/SS
MODE/SYNC
PGND
5
8
12
11
2
6
4
9
10
1
7
3
SW2
V
OUT
FB
V
C
GND
PGND
LTC3441
C1
10µF
C1: TAIYO YUDEN JMK212BJ106MG
C2: SANYO MV-AX SERIES
L1: TOKO A916CY-4R7M
V
IN
2.5V TO 5.5V
1A MAX
R6
24k
R4
1k
AVERAGE INPUT
CURRENT CONTROL
1N914
R
S
0.05Ω
R1
392k
C
OUT
2200µF
V
OUT
3.6V
2A (PULSED)
R2
200k
R5
24k
C4
10nF
3441 TA05
L1
10µH
–
+
1/2 LT1490A
1.22 • R4
R5 • R
S
I
CURRENTLIMIT
=
2N3906
–
+
1/2 LT1490A
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC3441
