参数资料
型号: LTC3450EUD#TRPBF
厂商: Linear Technology
文件页数: 7/12页
文件大小: 0K
描述: IC CONV PS TRIPLE TFT/LCD 16QFN
标准包装: 2,500
应用: 转换器,TFT,LCD
输入电压: 1.5 V ~ 4.6 V
输出数: 3
输出电压: 5.1V,-5V,±10V,±15V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-WFQFN 裸露焊盘
供应商设备封装: 16-QFN-EP(3x3)
包装: 带卷 (TR)
LTC3450
PI FU CTIO S
V3X (Pin 15): Charge Pump Tripler Output. This output is
15.3V (nom) at no load and is capable of delivering up to
500 μ A to a load. V3X should be bypassed to GND with a
0.1 μ F X5R type ceramic capacitor.
V INV (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 V INV .
BLOCK DIAGRA
L1
Connecting V INV to 5V or 10V will generate –5V or –10V
respectively on V NEG . See Applications section for –15V
generation.
Exposed Pad (Pin 17): The exposed pad must be con-
nected to V NEG (Pin 3) on the PCB. Do not connect the
exposed pad to GND.
V IN
1.5V TO
4.6V
C1
2.2 μ F
47 μ H
8
SW
7
V OUT
C2
2.2 μ F
AV DD
5.1V/10mA
V IN
6
SYNCHRONOUS
PWM BOOST
CONVERTER
SHUTDOWN
CHARGE PUMP
DOUBLER
IN
11
10
C1 +
C1 –
CF1
0.1 μ F
OUT
12
V2X
10V
C7
OSCILLATOR
550kHz
SHUTDOWN
1 μ F
BLANK SCAN
MODE
4
69kHz
CHARGE PUMP
TRIPLER
IN
14
13
C2 +
C2 –
CF2
0.1 μ F
OFF ON
SHDN
5
GLOBAL SHUTDOWN
OUT
15
V3X
C8
VGH (3 × AV DD )
15V/500 μ A
SHUTDOWN
16
V INV
0.47 μ F
CHARGE PUMP
INVERTER
IN
1
2
C3 +
C3 –
CF3
0.1 μ F
OUT
3
V NEG
C11
VGL
–10V/500 μ A
9
SHUTDOWN
3450 TA01
0.47 μ F
GND
3450fa
7
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