Datasheet
LT3461/LT3461A
8
3461af
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2003
LT/TP 1004 1K • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT1615/LT1615-1 300mA/80mA (I
SW
) Constant Off-Time, V
IN
: 1.2V to 15V, V
OUT(MAX)
= 34V, I
Q
= 20µA,
High Efficiency Step-Up DC/DC Converter I
SD
<1µA, ThinSOT Package
LT1944/LT1944-1 Dual Output 350mA/100mA (I
SW
), Constant Off-Time, V
IN
: 1.2V to 15V, V
OUT(MAX)
= 34V, I
Q
= 20µA,
High Efficiency Step-Up DC/DC Converter I
SD
<1µA, MS Package
LTC3400/LTC3400B 600mA (I
SW
), 1.2MHz, Synchronous Step-Up DC/DC Converter V
IN
: 0.85V to 5V, V
OUT(MAX)
= 5V, I
Q
= 19µA/300µA,
I
SD
<1µA, ThinSOT
LT3460 0.32A (I
SW
), 1.3MHz, High Efficiency Step-Up DC/DC Converter V
IN
: 2.5V to 16V, V
OUT(MAX)
= 36V, I
Q
= 2mA,
I
SD
<1µA, SC70, ThinSOT Packages
LT3465/LT3465A Constant Current, 1.2MHz/2.7MHz, High Efficiency White LED V
IN
: 2.7V to 16V, V
OUT(MAX)
= 34V, I
Q
= 1.9mA,
Boost Regulator with Integrated Schottky Diode I
SD
<1µA, ThinSOT Package
TYPICAL APPLICATIO S
U
Low Profile (1mm) 3.3V to 15V Step-Up Converter 3.3V to 15V Efficiency
V
IN
3.3V
L1
10µH
332k
30.1k
C2
2.2µF
22pF
C1
1µF
V
OUT
15V
25mA
1
2
V
IN
V
OUT
SW
3
4
5
6
FB
SHDN
GND
LT3461A
C1: TAIYO YUDEN LMK107BJ105KA
C2: TAIYO YUDEN EMK316BJ225KD (X5R)
L1: MURATA LQH2MCN100K02
3461a TA04a
OFF ON
LOAD CURRENT (mA)
0
EFFICIENCY (%)
75
70
65
60
55
50
3461a TA04b
105203015 25
V
IN
5V
L1
47µH
280k
10k
C2
0.47µF
50V
22pF
C1
1µF
V
OUT
36V
18mA
1
2
V
IN
V
OUT
SW
3
4
5
6
FB
SHDN
GND
LT3461
C1: TAIYO YUDEN X7R LMK212BJ105
C2: MURATA GRM42-6X7R474K50
L1: MURATA LQH32CN470
3461 TA05a
OFF ON
LOAD CURRENT (mA)
0
EFFICIENCY (%)
16
3461 TA05b
81214624 10
80
75
70
65
60
55
50
18
5V to 36V Step-Up Converter (LT3461) 5V to 36V Efficiency
3.3V to ±5V Dual Output Converter
V
IN
3.3V
L1
4.7µH
45.3k
15k
15pF
C1
1µF
1
2
V
IN
V
OUT
SW
3
4
5
6
FB
SHDN
GND
LT3461A
OFF ON
3461 TA06
C4
1µF
C2
1µF
C3
1µF
–5V
15mA
D1
D2
V
OUT
5V
100mA
C1, C2, C3, C4: TAIYO YUDEN JMK107BJ105
D1, D2: PHILIPS PMEG2005EB
L1: MURATA LQH2MCN4R7M02
10Ω