LT1935
TYPICAL APPLICATIO S
8V, 16V and –8V TFT LCD Power Supply
C5
0.1µF
D2B
D2A
C3
1µF
16V
10mA
V
IN
3.3V
C1
4.7µF
ON OFF
V
IN
V
IN
3.2V TO 9V
C1
4.7µF
ON OFF
V
IN
RELATED PARTS
PART NUMBER
LT1618
LT1930/LT1930A
LT1943
LT1946/LT1946A
DESCRIPTION
1.5A (I
SW
), 1.25MHz, High Efficiency Step-Up DC/DC Converter
1A (I
SW
), 1.2MHz/2.2MHz, High Efficiency Step-Up DC/DC Converter
Quad Output, 2.6A Buck, 2.6A Boost, 0.3A Boost,
0.4A Inverter 1.2MHz TFT DC/DC Converter
1.5A (I
SW
), 1.2MHz/2.7MHz, High Efficiency Step-Up DC/DC Converter
COMMENTS
V
IN
: 1.6V to 18V, V
OUT(MAX)
: 35V, I
Q
: 1.8mA,
I
SD
: <1µA, MS, DFN Packages
V
IN
: 2.6V to 16V, V
OUT(MAX)
: 34V, I
Q
: 4.2mA/5.5mA
I
SD
: <1µA, ThinSOT Package
V
IN
: 4.5V to 22V, V
OUT(MAX)
: 40V, I
Q
: 10mA,
I
SD
: <35µA, TSSOP-28E Package
V
IN
: 2.45V to 16V, V
OUT(MAX)
: 34V, I
Q
: 3.2mA,
I
SD
: <1µA, MS8 Package
V
IN
: 0.85V to 5V, V
OUT(MAX)
: 5V, I
Q
: 19µA/300µA
I
SD
: <1µA, ThinSOT Package
V
IN
: 0.5V to 5V, V
OUT(MAX)
: 6V, I
Q
: 38µA,
I
SD
: <1µA, MS Package
V
IN
: 0.5V to 4.5V, V
OUT(MAX)
: 5.25V, I
Q
: 12µA,
I
SD
: <1µA, QFN Package
V
IN
: 3V to 25V, V
OUT(MAX)
: 34V, I
Q
: 0.9mA,
I
SD
: <6µA, TSSOP-16E Package
V
IN
: 2.6V to 16V, V
OUT(MAX)
: 40V, I
Q
: 1.2mA,
I
SD
: <1µA, ThinSOT Package
1935f
LT/TP 0604 1K • PRINTED IN USA
LTC3400/LTC3400B 600mA (I
SW
), 1.2MHz, Synchronous Step-Up DC/DC Converter
LTC3401/LT3402
LTC3425
LT3436
LT3467/LT3467A
1A/2A(I
SW
), 3MHz, Synchronous Step-Up DC/DC Converter
5A (I
SW
), 8MHz, Multi-Phase Synchronous Step-Up DC/DC Converter
3A (I
SW
), 1MHz, 34V Step-Up DC/DC Converter
1.1A (I
SW
), 1.3MHz/2.1MHz, High Efficiency Step-Up DC/DC Converter
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
U
L1
2.2µH
8V
450mA
D1
SW
R1
100k
C2
10µF
R2
18.7k
C6
0.1µF D3A
C4
1µF
–8V
10mA
1935 TA03
LT1935
SHDN
GND
FB
C1: X5R OR X7R 6.3V
C2, C4, C5, C6: X5R OR X7R 10V
C3: X5R OR X7R 25V
D1: MBRM120 OR EQUIVALENT
D2, D3: BAT-54S OR EQUIVALENT
L1: SUMIDA CDRH4D28-2R2
D3B
5V SEPIC Converter
L1
4.7µH
C3
2.2µF
D1
V
OUT
5V
425mA, V
IN
>3.2V
500mA, V
IN
>3.6V
550mA, V
IN
>4V
C2
47µF
R2
10k
L2
4.7µH
SW
LT1935
R1
29.4k
47pF
SHDN
GND
FB
C1, C3: X5R OR X7R 10V
C2: X5R OR X7R 6.3V
D1: ON SEMI MBRM120
L1, L2: SUMIDA CDRH4D18-4R7
1935 TA04
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©
LINEAR TECHNOLOGY CORPORATION 2004
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
