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LTC3450 데이터시트(PDF) 7 Page - Linear Technology

부품명 LTC3450
상세설명  Triple Output Power Supply for Small TFT-LCD Displays
PDF  12 Pages
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LTC3450 데이터시트(HTML) 7 Page - Linear Technology

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LTC3450
7
3450fa
PI FU CTIO S
CF1
0.1µF
C1
2.2µF
VIN
1.5V TO
4.6V
AVDD
5.1V/10mA
VGH (3 × AVDD)
15V/500µA
10V
VGL
–10V/500µA
3450 TA01
C1+
C1–
V2X
VIN
SHDN
GLOBAL SHUTDOWN
MODE
SW
VOUT
OFF ON
BLANK SCAN
L1
47µH
C2
2.2µF
C7
1µF
8
6
4
5
7
9
11
10
12
SHUTDOWN
SYNCHRONOUS
PWM BOOST
CONVERTER
OSCILLATOR
CHARGE PUMP
DOUBLER
IN
OUT
CF2
0.1µF
C2+
C2–
V3X
C8
0.47µF
14
13
15
SHUTDOWN
SHUTDOWN
CHARGE PUMP
TRIPLER
IN
69kHz
550kHz
OUT
CF3
0.1µF
C3+
C3–
VNEG
GND
C11
0.47µF
1
VINV
16
2
3
SHUTDOWN
CHARGE PUMP
INVERTER
IN
OUT
BLOCK DIAGRA
V3X (Pin 15): Charge Pump Tripler Output. This output is
15.3V (nom) at no load and is capable of delivering up to
500µA to a load. V3X should be bypassed to GND with a
0.1µF X5R type ceramic capacitor.
VINV (Pin 16): Positive Voltage Input for the Charge Pump
Inverter. The charge pump inverter will generate a nega-
tive voltage corresponding to the voltage applied to VINV.
Connecting VINV to 5V or 10V will generate –5V or –10V
respectively on VNEG. See Applications section for –15V
generation.
Exposed Pad (Pin 17): The exposed pad must be con-
nected to VNEG (Pin 3) on the PCB. Do not connect the
exposed pad to GND.



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