HV825
High Voltage EL Lamp Driver
Ordering Information
Package Options
MSOP-8
Device
Input Voltage
8-Lead SO
Die
HV825
1.0 to 1.6V
HV825LG
HV825MG*
HV825X
* Product supplied on 2500 piece carrier tape reels.
Features
General Description
❏
❏
❏
❏
❏
❏
❏
Processed with HVCMOS® technology
1.0V to 1.6V operating supply voltage
DC to AC conversion
The Supertex HV825 is a high voltage driver designed for driving
EL lamps typically up to 6nF. The input supply voltage range is
from 1.0V to 1.6V. The device uses a single inductor and a
minimum number of passive components. Typical output
voltage that can be applied to the EL lamp is 56V.
Output load of typically up to 6nF
Adjustable output lamp frequency
Adjustable converter frequency
Enable function
The HV825 can be enabled/disabled by connecting the RSW-osc
resistor to VDD/ground.
The HV825 has two internal oscillators, a switching bipolar
junction transistor (BJT), and a high voltage EL lamp driver. The
frequency for the switching BJT is set by an external resistor
connected between the RSW-osc pin and the supply pin VDD. The
EL lamp driver frequency is set by an external resistor connected
between REL-osc pin and the VDD pin. An external inductor is
connected between the LX and VDD pins. A 0.01 to 0.1µF, 100V
capacitor is connected between CS and ground. The EL lamp is
connected between VA and VB.
Applications
❏
❏
❏
❏
❏
Pagers
Portable Transceiver
Cellular phones
Remote control units
Calculators
The switching BJT charges the external inductor and discharges
it into the 0.01 to 0.1µF, 100V capacitor at CS. The voltage at CS
will start to increase. The outputs VA and VB are configured as
an H-bridge and are switching in opposite states to achieve a
peak-to-peak voltage of two times the VCS voltage across the EL
lamp.
Absolute Maximum Ratings*
Supply voltage, VDD
-0.5V to +2.5V
Operating Temperature Range
Storage Temperature Range
MSOP-8 Power Dissipation
SO-8 Power Dissipation
-25°C to +85°C
-65°C to +150°C
300mW
Pin Configuration
1
2
3
4
8
7
6
5
VDD
RSW-osc
Cs
REL-osc
VA
400mW
Note:
VB
*All voltages are referenced to GND.
Lx
GND
top view
SO-8/MSOP-8
For detailed circuit and application information, please refer
to application notes AN-H33 and AN-H34.
11/12/01
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
1
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.
5秒后页面跳转
AT89C51单片机资料手册详细解析及应用示例
CP2102资料手册解读：CP2102引脚说明、关键参数分析
资料手册解读：UC3842参数和管脚说明
一文带你了解无源晶振的负载电容为何要加两颗谐振电容CL1和CL2
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
