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參數(shù)資料
| 型號(hào)： | SP4414EU |
| 英文描述： | Low Cost Electroluminescent Lamp Driver |
| 中文描述： | 低成本電致發(fā)光燈驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大?。?/td> | 137K |
| 代理商： | SP4414EU |
SP4414DS/17
SP4414 Electroluminescent Lamp Driver
4
Copyright 2000 Sipex Corporation
DESCRIPTION
The
SP4414
Electroluminescent Lamp Driver
is a low-cost low power device ideal for the
replacement of LED backlighting designs. The
32kHz external oscillator drives controls signals
for the coil and EL lamp circuitry. The
SP4414
32kHz operation is synchronized with existing
system clock designs in single cell applications
such as pagers, cell phones, PDAs, etc.
The
SP4414
contains a DC-AC inverter that
can produce an AC output of 180V
(maximum)
from a +2.2V to +4.5V input voltage. An
external clock provides the
SP4414
with
the control signals for the coil and EL lamp.
An internal block diagram of the
SP4414
can
be found in
Figure 1
.
The
SP4414
is built on
Sipex's
dielectrically
isolated BiCMOS process that provides the
isolation required to separate the high voltage
AC signal used to drive the EL lamp from the
low voltage logic and signal processing circuitry.
This ensures latch-up free operation in the
interface between the low voltage CMOS
circuitry and the high voltage bipolar circuitry.
A total of only four external components are
required for the standard operation of the
SP4414
: an inductor, a fast recovery diode, and
two capacitors. A diagram of the
SP4414
in a
typical application can be found in
Figure 2
.
Figure 1. Internal Diagram of the SP4414
f
COIL
f
LAMP
f
LAMP
FF6
Q
Q
V
BATTERY
L1
2.7mH
EL Lamp
SCR1
SCR2
6
3
2
V
SS
C
INT
COIL
EL2
EL1
C
100pF
FF1
ELEN
SP4414
C
1
10nF
*D1
1N4148
V
DD
1
CLK
8
4
5
* optional device
7
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP4414NEB | Low Cost Electroluminescent Lamp Driver |
| SP4414UEB | Low Cost Electroluminescent Lamp Driver |
| SP4415 | Electroluminescent Lamp Driver with Selectable Level Outputs |
| SP4415CN | Electroluminescent Lamp Driver with Selectable Level Outputs |
| SP4416UEB | Electroluminescent Lamp Driver with 4-Level Light Intensity Selection Feature |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP4414NEB | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Cost Electroluminescent Lamp Driver |
| SP4414UEB | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Cost Electroluminescent Lamp Driver |
| SP4415 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Electroluminescent Lamp Driver with Selectable Level Outputs |
| SP4415CN | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Electroluminescent Lamp Driver with Selectable Level Outputs |
| SP4416 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Electroluminescent Lamp Driver with 4-Level Light Intensity Selection Feature |
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