![](http://datasheet.mmic.net.cn/330000/LQH3C100_datasheet_16424478/LQH3C100_8.png)
8
LT1945
1945f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
G
FAX: (408) 434-0507
G
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2001
LT/TP 0802 2K PRINTED IN USA
RELATED PARTS
PART NUMBER
LT1613
DESCRIPTION
550mA I
SW
, 1.4MHz, High Efficiency Step-Up DC/DC Converter V
IN
= 0.9V to 10V, V
OUT
= 34V, I
Q
= 3mA, I
SD
= <1
μ
A,
COMMENTS
ThinSOT Package
V
IN
= 1.2V to 15V, V
OUT
= 34V, I
Q
= 20
μ
A, I
SD
= <1
μ
A,
ThinSOT Package
V
IN
= 3V to 25V, V
OUT
= 1.2V, I
Q
= 2.5mA, I
SD
= <1
μ
A,
TSSOP-16E Package
V
IN
= 1.2V to 15V, V
OUT
= 34V, I
Q
= 20
μ
A, I
SD
= <1
μ
A, MS Package
LT1615/LT1615-1
300mA I
SW
, Constant Off-Time, High Efficiency
Step-Up DC/DC Converter
Dual Output 1.4A (I
OUT
), Constant 1.1MHz, High Efficiency
Step-Down DC/DC Converter
Dual Output 350mA I
SW
, Constant Off-Time, High Efficiency
Step-Up DC/DC Converter
Dual Output 150mA I
SW
, Constant Off-Time, High Efficiency
Step-Up DC/DC Converter
550mA I
SW
, 600kHz/1.1MHz, High Efficiency
Step-Up DC/DC Converter
LTC3400/LTC3400B 600mA I
SW
, 1.2MHz, Synchronous Step-Up DC/DC Converter
LT1940
LT1944
LT1944-1
V
IN
= 1.2V to 15V, V
OUT
= 34V, I
Q
= 20
μ
A, I
SD
= <1
μ
A, MS Package
LT1949/LT1949-1
V
IN
= 1.5V to 12V, V
OUT
= 28V, I
Q
= 4.5mA, I
SD
= <25
μ
A,
S8, MS8 Packages
V
= 0.85V to 5V, V
OUT
= 5V, I
Q
= 19
μ
A/300
μ
A, I
SD
= <1
μ
A,
ThinSOT Package
V
IN
= 0.5V to 5V, V
OUT
= 6V, I
Q
= 38
μ
A, I
SD
= <1
μ
A, MS Package
V
IN
= 0.5V to 5V, V
OUT
= 6V, I
Q
= 38
μ
A, I
SD
= <1
μ
A, MS Package
V
IN
= 0.5V to 5V, V
OUT
= 6V, I
Q
= 38
μ
A, I
SD
= <1
μ
A, MS Package
LTC3401
LTC3402
LTC3423
1A I
SW
, 3MHz, Synchronous Step-Up DC/DC Converter
2A I
SW
, 3MHz, Synchronous Step-Up DC/DC Converter
1A I
SW
, 3MHz, Low V
OUT
,
Synchronous Step-Up
DC/DC Converter
2A I
SW
, 3MHz, Low V
OUT
,
Synchronous Step-Up
DC/DC Converter
LTC3424
V
IN
= 0.5V to 5V, V
OUT
= 6V, I
Q
= 38
μ
A, I
SD
= <1
μ
A, MS Package
Dual Output (
±
32V) Converter
V
IN
SW1
FB2
SW2
LT1945
4
3
L1
10
μ
H
D1
D2
SHDN2
GND
24.9k
604k
C2
1
μ
F
–32V
5mA
V
IN
2.7V
TO 5V
1945 TA02
7
PGND
9
PGND
6
8
10
4.7pF
C1
4.7
μ
F
NFB1
2
5
1
SHDN1
L2
10
μ
H
D3
2M
80.6k
C3
1
μ
F
100pF
C1: TAIYO YUDEN JMK212BJ475
C2, C3: TAIYO YUDEN GMK316BJ105
C4: TAIYO YUDEN UMK212BJ104
D1, D2, D3: ZETEX ZHCS400
L1, L2: MURATA LQH3C100
32V
5mA
C4
0.1
μ
F
(408)573-4150
(408)573-4150
(408)573-4150
(631)543-7100
(814)237-1431
U
TYPICAL APPLICATIO
LOAD CURRENT (mA)
0.1
50
E
55
60
65
70
80
1
10
1945 TA02a
75
+32V OUTPUT
–32V OUTPUT
Efficiency at V
IN
= 3.6V