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HV829B

更新时间： 2024-02-18 18:39:45
品牌 Logo 应用领域
超科 - SUPERTEX 驱动器高压
页数 文件大小 规格书
4页 44K
描述
High Voltage EL Lamp Driver

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HV829B 技术参数

生命周期：Obsolete零件包装代码：DIE
包装说明：DIE,Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.84接口集成电路类型：EL DISPLAY DRIVER
JESD-30 代码：X-XUUC-N复用显示功能：NO
功能数量：1区段数：1
最高工作温度：85 °C最低工作温度：-25 °C
封装主体材料：UNSPECIFIED封装代码：DIE
封装形状：UNSPECIFIED封装形式：UNCASED CHIP
认证状态：Not Qualified最大供电电压：5.5 V
最小供电电压：2.7 V表面贴装：YES
技术：CMOS温度等级：OTHER
端子形式：NO LEAD端子位置：UPPER
Base Number Matches：1

HV829B 数据手册

 浏览型号HV829B的Datasheet PDF文件第2页浏览型号HV829B的Datasheet PDF文件第3页浏览型号HV829B的Datasheet PDF文件第4页 
HV829A/B  
Advance Information  
High Voltage EL Lamp Driver  
Features  
General Description  
❑ Processed with HVCMOS® technology  
The Supertex HV829A/B are high voltage EL lamp driver inte-  
grated circuits designed for driving EL lamps of up to 70nF at  
1000Hz. The input supply voltage range is from 2.7V to 5.5V.  
These devices use a single inductor, a high voltage switching  
FET and a minimum number of passive components. The  
HV829A/B will supply the EL lamp with an AC square wave with  
a peak-to-peak voltage of two times the set regulated DC  
voltage.  
❑ VDD voltage range = 2.7 to 5.5V DC  
❑ Output load up to 70nF (20 in2 for 3.5nF/ in2 lamp)  
❑ Adjustable DC-DC converter frequency  
❑ Continious output voltage regulation control  
(from 50V to 200V)  
The HV829A/B has one internal oscillator and a high voltage EL  
lamp driver. The frequency for the external switching MOSFET  
is set by an external resistor connected between the RSW-osc pin  
and GND. The EL frequency for the HV829A is equal to the  
switchingfrequencydividedby64wheretheELfrequencyforthe  
HV829B is equal to the switching frequency divided by 128. Gate  
of the external MOSFET is connected to the Gate pin. An  
external inductor is connected between the Drain of external  
MOSFET and VDD pin. A 0.01-2.5µF capacitor is connected  
between Cs and ground. The EL lamp is connected between VA  
and VB. The output voltage regulation level is controlled via the  
VREG pin for dimming and/or conservation of power. The output  
voltage regulation can be controlled continuously between 50V  
and 200V depending on the voltage applied to VREG pin (0.75V  
to 3V).  
Application  
❑ Electronic Organizers  
❑ Handheld Portable Computers  
❑ Display Signs  
❑ Portable Instrumentation Equipment  
The switching MOSFET charges the external inductor and  
discharges it into the capacitor at CS. The voltage at CS will start  
to increase. Once the voltage at CS reaches a nominal value  
chosen by the user, the switching MOSFET is turned OFF to  
conserve power. The outputs VA and VB are configured as an H  
bridge and are switching in opposite states to achieve the AC  
voltage of +/- VREG voltage across the EL lamp.  
Typical Application Circuit  
Off=V  
DD  
On=GND  
VDD  
1
2
3
4
8
7
6
5
VDD  
V
V
A
B
EL Lamp  
Lx  
Vreg  
RSW-osc  
VREG  
GND  
Gate  
BAV21  
C
S
HV829ASG  
+
-
VN2224N3 or  
TN2425N8  
C
VIN  
IN  
C
S
250V  
09/05/02  
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability  
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to  
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the  
Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.  
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