LT1947 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT1947 Datasheet PDF : 12 Pages
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LT1947
TYPICAL APPLICATIO
TFT-LCD Bias Generator: 7.5V, 15V, – 10V Output
C6
0.68µF
D3
D4
BAT54S
C7
0.68µF
D5
D6
C4
0.68µF
BAT54S
VIN
D7 34k VOFF
3.3V
–10V
20mA
C8
Q1
34k
C1
1µF
CERAMIC
×2
SHUTDOWN
L1
3.3µH
L2
4.7µH
VIN
SW2
D1
SW1
FB1
D2
C3
0.68µF
R3
105k
R4
10k
VO2 LT1947
FB2
VON
SHDN CT GND
C5
10nF
R1
49.9k
R2
10k
AVDD
7.5V
200mA
C2
3.3µF
CERAMIC
×2
VON
15V
10mA
C1: TAIYO YUDEN JMK107BJ105MA
1µF 6.3V X7R ×2
D1: MBRM120
D2: CMDSH-3
1947 TA03
C2: TAIYO YUDEN LMK325BJ335MD
D7: MMBZ5240 10V ZENER
3.3µF 10V X7R ×2
L1: SUMIDA CLQ4D103R3
C3, C7, C8: TAIYO YUDEN EMK212BJ684MD L2: TAIYO YUDEN LB2012B-4R7M
0.68µF 16V X7R
Q1: MMBT3906 PNP
C4, C6: TAIYO YUDEN LMK107BJ684MA
0.68µF 10V X5R
RELATED PARTS
PART NUMBER DESCRIPTION
COMMENTS
LT1310
1.5A ISW, 4.5MHz, High Efficiency
Step-Up DC/DC Converter
VIN = 2.75V to 18V, VOUT Max = 35V, IQ = 12mA, ISHDN = <1µA, MS10E
LT1613
550mA ISW, 1.4MHz, High Efficiency
Step-Up DC/DC Converter
VIN = 0.9V to 10V, VOUT Max = 34V, IQ = 3mA, ISHDN = <1µA, ThinSOT
LT1615/LT1615-1 300mA/80mA ISW, Constant Off-Time,
High Efficiency Step-Up DC/DC Converter
VIN = 1.2V to 15V, VOUT Max = 34V, IQ = 20µA, ISHDN = <1µA, ThinSOT
LT1940
Dual Output 1.4A IOUT, Constant 1.1MHz,
High Efficiency Step-Down DC/DC Converter
VIN = 3V to 25V, VOUT Min = 1.2V, IQ = 2.5mA, ISHDN = <1µA, TSSOP-16E
LT1944
Dual Output 350mA ISW, Constant Off-Time,
High Efficiency Step-Up DC/DC Converter
VIN = 1.2V to 15V, VOUT Max = 34V, IQ = 20µA, ISHDN = <1µA, MS10
LT1944-1
Dual Output 150mA ISW, Constant Off-Time,
High Efficiency Step-Up DC/DC Converter
VIN = 1.2V to 15V, VOUT Max = 34V, IQ = 20µA, ISHDN = <1µA, MS10
LT1945
Dual Output, Pos/Neg 350mA ISW, Constant Off-Time, VIN = 1.2V to 15V, VOUT Max = ±34V, IQ = 20µA, ISHDN = <1µA, MS10
High Efficiency Step-Up DC/DC Converter
LT1946/LT1946A 1.5A ISW, 1.2MHz/2.7MHz, High Efficiency
Step-Up DC/DC Converter
VIN = 2.45V to 16V, VOUT Max = 34V, IQ = 3.2mA, ISHDN = <1µA, MS8
LT1949/LT1949-1 550mA ISW, 600kHz/1.1MHz, High Efficiency
Step-Up DC/DC Converter
VIN = 1.5V to 12V, VOUT Max = 28V, IQ = 4.5mA, ISHDN = <25µA, MS8, S8
LTC3400/LTC3400B 600mA ISW, 1.2MHz, Synchronous
Step-Up DC/DC Converter
VIN = 0.85V to 5V, VOUT Max = 5V, IQ = 19µA/300µA, ISHDN = <1µA, ThinSOT
LTC3401
LTC3402
LTC3423
1A ISW, 3MHz, Synchronous Step-Up DC/DC Converter VIN = 0.5V to 5V, VOUT Max = 6V, IQ = 38µA, ISHDN = <1µA, MS10
2A ISW, 3MHz, Synchronous Step-Up DC/DC Converter VIN = 0.5V to 5V, VOUT Max = 6V, IQ = 38µA, ISHDN = <1µA, MS10
1A ISW, 3MHz, Low VOUT, Synchronous Step-Up
DC/DC Converter
VIN = 0.5V to 5V, VOUT Max = 6V, IQ = 38µA, ISHDN = <1µA, MS10
LTC3424
2A ISW, 3MHz, Low VOUT, Synchronous Step-Up
DC/DC Converter
VIN = 0.5V to 5V, VOUT Max = 6V, IQ = 38µA, ISHDN = <1µA, MS10
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
1947fa
LT/LT 0605 REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2001
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