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IMP803IMA

更新时间： 2024-01-09 12:18:59
品牌 Logo 应用领域
IMP 驱动器高压
页数 文件大小 规格书
8页 164K
描述
HIGH-VOLTAGE EL LAMP DRIVER

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IMP803IMA 技术参数

生命周期：Obsolete零件包装代码：DIE
包装说明：,Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.82Is Samacsys：N
其他特性：180V PEAK-TO-PEAK TYPICAL AC OUTPUT VOLTAGE接口集成电路类型：HALF BRIDGE BASED PERIPHERAL DRIVER
JESD-30 代码：X-XUUC-N功能数量：1
最高工作温度：25 °C最低工作温度：25 °C
输出电流流向：SOURCE AND SINK封装主体材料：UNSPECIFIED
封装形状：UNSPECIFIED封装形式：UNCASED CHIP
认证状态：Not Qualified最大供电电压：6.5 V
最小供电电压：2 V标称供电电压：3 V
表面贴装：YES技术：CMOS
温度等级：OTHER端子形式：NO LEAD
端子位置：UPPERBase Number Matches：1

IMP803IMA 数据手册

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IMP803  
P
OWER  
M
ANAGEMENT  
Key Features  
High-Voltage EL Lamp Driver  
The IMP803 is an Electroluminescent (EL) lamp driver with the four EL  
lamp driving functions on-chip. These are the switch-mode power sup-  
ply, its high-frequency oscillator, the high-voltage H-bridge lamp driver  
and its low-frequency oscillator. The IMP803 drives EL lamps of up to  
30nF capacitance to high brightness; EL lamps with capacitances greater  
than 30nF can be driven, but will be lower in light output. The typical  
regulated output voltage that is applied to the EL lamp is 180V peak-to-  
peak. The circuit requires few external components, a single inductor,  
single diode, two capacitors and three resistors. Two of these resistors  
set the frequency for two internal oscillators.  
ꢀ Low Power: 420µA typical VDD current  
ꢀ Wide operating voltage range - from 2.0V to 6.5V  
ꢀ 180V peak-to-peak typical AC output voltage  
ꢀ Large output load capability - drive lamps  
with more than 30nF capacitance  
ꢀ Adjustable output lamp frequency for control of  
lamp color, lamp life, and power consumption  
ꢀ Adjustable converter frequency to minimize  
power consumption  
The IMP803 operates over a 2.0V to 6.5V supply voltage range. A  
regulated, low-power source can supply the low quiescent current of the  
IMP803. The inductor may be driven from an independent, unregulated  
supply voltage in dual supply applications.  
ꢀ Device can be Enabled/Disabled  
ꢀ Low quiescent current – 20nA (disabled)  
ꢀ High-Voltage CMOS Process  
An internal circuit shuts down the switching regulator when the lamp  
drive voltage reaches 180V peak-to-peak. This conserves power and  
extends battery life.  
ꢀ MicroSO package option  
The IMP803 is available in MicroSO and SO-8 packages and in die or  
wafer form.  
Applications  
ꢀ GPS units/Pagers/Cellular phones  
ꢀ PDAs/Handheld computers  
ꢀ Safety illumination  
ꢀ Portable instrumentation  
ꢀ Battery-operated displays  
ꢀ LCD modules  
Block Diagram  
ꢀ Toys  
4
1
VDD  
LX  
3
2
5
Switch  
Oscillator  
RSW-OSC  
CS  
GND  
Q
+
–
7
V
C
A
Regulation  
Control  
VREF  
Q
Q
Bridge  
Output  
Driver  
IMP803  
6
VB  
8
Lamp Drive  
Oscillator  
REL-OSC  
Q
803_01.eps  
© 2000 IMP, Inc.  
408-432-9100/www.impweb.com  
1
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