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參數(shù)資料
| 型號(hào)： | SP4439 |
| 英文描述： | Ultra-Quiet Electroluminescent Lamp Driver with Programmable Wave Shape(超靜場(chǎng)致發(fā)光燈驅(qū)動(dòng)器（可編程波形）) |
| 中文描述： | 超靜音電致發(fā)光燈帶可編程波形（超靜場(chǎng)致發(fā)光燈驅(qū)動(dòng)器（可編程波形）驅(qū)動(dòng)程序） |
| 文件頁(yè)數(shù)： | 3/13頁(yè) |
| 文件大小： | 193K |
| 代理商： | SP4439 |
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Rev. 2/15/01 SP4439 Ultra-Quiet Electroluminescent Lamp Driver With Programmable Waveshape Copyright 2000 Sipex Corporation
PIN ASSIGNMENTS
PINOUT
V
DD
C
INT
EL1
ELEN
R
OSC
COIL
EL2
V
SS
R
C
R
D
1
2
10
9
8
7
6
3
4
5
SP4439
10 Pin MSOP
1
R
D
Discharge Rate Set Resistor. Connect the discharge rate set
resistor from this pin to ground.
Positive Battery Power Supply. Connect such that +2.2V < V
DD
< +5.0V.
Electroluminescent Lamp Enable. When driven HIGH, this input
pin enables the EL driver outputs for EL1 and EL2. This pin has
an internal pulldown resistor.
Oscillator Resistor. Connecting a resistor to this input pin sets the
frequency of the internal clock.
Power Supply Common. Connect to the lowest circuit potential,
typically ground.
The inductor for the EL lamp is connected from V
DD
to this input
pin.
Integrating Capacitor. An integrating capacitor (47nF typical)
connected from this pin to ground filters out any coil switching
spikes or ripple present in the output waveform to the EL lamp.
Connecting a fast recovery diode from COIL to C
INT
increases the
light output of the EL lamp.
Electroluminescent Lamp Output 2. This is a high voltage lamp
driver output pin to connect to the EL lamp.
Charge Rate Set Resistor. Connect the charge rate set resistor
from this pin to pin 7, the integrating capacitor.
Electroluminescent Lamp Output 1. This is a high voltage lamp
driver output pin to connect to the EL lamp.
2
V
DD
3
ELEN
4
R
OSC
5
V
SS
6
COIL
7
C
INT
8
EL2
9
R
C
10
EL1
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