LT1935 Linear Technology, LT1935 Datasheet - Page 8

• Manufacturer Part Number: LT1935
• Description: DC/DC Converter
• Manufacturer: Linear Technology

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