參數(shù)資料
型號(hào): SP4438UEB
英文描述: RECTIFIER BRIDGE 25A 100V 300A-ifsm 1.1V-vf 5uA-ir GBPCW 100/TRAY
中文描述: 超靜音電致發(fā)光燈為蜂窩電話應(yīng)用程序
文件頁(yè)數(shù): 1/19頁(yè)
文件大?。?/td> 223K
代理商: SP4438UEB
1
Rev.11/13/00
SP4438 Ultra-Quiet Electroluminescent Lamp Driver Copyright 2000 Sipex Corporation
I
Patent Pending Output Waveshaping
I
Waveshaped Output Optimized For Low
Acoustic Noise And Maximum Efficiency
I
Reduced Supply Current And Standby
Current
I
Up to15cd/m
2
For Cell Phone Sized EL
Lamps (2 to 3 sq. in.)
I
Waveshaped Output And Low Frequency
Operation Minimize Stress On EL Lamp To
Extend Its Lifetime
I
Uses 820
μ
H, Sub-2mm Coils
I
Gradual Rising And Falling Edges Minimizes
EMI
I
+2.7V To +3.3V Battery Operation
I
Space-Saving 8-pin MSOP package
APPLICATIONS
I
Cellular Radios
I
Wireless Communication Products
DESCRIPTION
The SP4438 device is a low noise, high voltage output DC-AC inverter designed to drive
electroluminescent lamps to backlight liquid crystal display and keypads used in cellular
phones, cordless phones, 2-way radios, and other wireless communication products. The
output waveform of the SP4438
device is ideal for cell phone applications requiring low
acoustic noise performance. One external resistor is used to set the internal oscillator
frequency and one inductor is required to generate the high voltage AC output to drive an EL
lamp up to 3 square inches in size. The SP4438
operates from a +3.0V battery source and
has a low power standby mode that draws less than 1
μ
A, making it ideal for low-power cellular
applications. All input pins are ESD protected with internal diodes to V
DD
and V
SS
. The SP4438
is offered in a space-saving 8-pin MSOP package.
V
DD
C
INT
EL1
ELEN
R
OSC
V
SS
COIL
EL2
SP4438
8
7
4
3
2
1
5
6
V
SS
COIL
C
INT
SP4438
V
BATT
C1
0.1
μ
F
L1
820
μ
H/14
5
1
2
6
4
ELEN
1D1
INT
C
V
DD
EL2
EL1
EL Lamp
7
8
3
R
OSC
714k
C2
1nF
R
OSC
Ultra-Quiet Electroluminescent Lamp Driver
For Cellular Phone Applications
SP4438
相關(guān)PDF資料
PDF描述
SP4438 Ultra-Quiet Electroluminescent Lamp Driver For Cellular Phone Applications
SP4438EU Ultra-Quiet Electroluminescent Lamp Driver For Cellular Phone Applications
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