HV823X

更新时间： 2024-01-08 18:20:00

品牌	Logo	应用领域
超科 - SUPERTEX		显示驱动器驱动程序和接口接口集成电路高压
页数	文件大小	规格书
8页	392K
描述
High Voltage EL Lamp Driver

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HV823X 技术参数

生命周期：	Obsolete	零件包装代码：	DIE
包装说明：	DIE,	针数：	8
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.74
接口集成电路类型：	EL DISPLAY DRIVER	JESD-30 代码：	R-XUUC-N8
复用显示功能：	NO	功能数量：	1
端子数量：	8	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：	RECTANGULAR
封装形式：	UNCASED CHIP	认证状态：	Not Qualified
最大供电电压：	9.5 V	最小供电电压：	2 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

HV823X 数据手册

HV823

High Voltage EL Lamp Driver

Ordering Information

Package Options

Device

Input Voltage

8-Lead SO

Die

HV823

2.0V to 9.5V

HV823LG

HV823X

Features

General Description

❏

Processed with HVCMOS^®technology

2.0V to 9.5V operating supply voltage

DC to AC conversion

TheSupertexHV823isahigh-voltagedriverdesignedfordriving

EL lamps of up to 50nF. EL lamps greater than 50nF can be

driven for applications not requiring high brightness. The input

supply voltage range is from 2.0 to 9.5V.The device uses a single

inductor and a minimum number of passive components. The

nominal regulated output voltage that is applied to the EL lamp

is 90V.The chip can be enabled by connecting the resistors on

R_SW-oscand R_EL-osctoV_DDand disabled when connected to GND.

180V peak-to-peak typical output voltage

Large output load capability typically 50nF

Permits the use of high-resistance elastomeric lamp

components

The HV823 has two internal oscillators, a switching MOSFET,

and a high-voltage EL lamp driver.The frequency for the switch-

ing converter MOSFET is set by an external resistor connected

between the R_SW-oscpin and the supply pin V_DD. The EL lamp

driver frequency is set by an external resistor connected be-

tween R_EL-oscpin and the V_DDpin. An external inductor is

connected between the L_xand V_DDpins. A 0.01µF to 0.1µF

capacitor is connected between C_Sand GND. The EL lamp is

connected between V_Aand V_B.

❏

Adjustable output lamp frequency to control lamp color,

lamp life, and power consumption

Adjustable converter frequency to eliminate harmonics and

optimize power consumption

❏

Enable/disable function

Low current draw under no load condition

The switching MOSFET charges the external inductor and

discharges it into the C_scapacitor.The voltage at C_swill start to

increase.Once the voltage at C_sreaches a nominal value of 90V,

the switching MOSFET is turned OFF to conserve power. The

outputs V_Aand V_Bare configured as an H-bridge and are

switchedinoppositestatestoachieve180Vpeak-to-peakacross

the EL lamp.

Applications

❏

Handheld personal computers

Electronic personal organizers

GPS units

Pagers

Pin Configuration

Cellular phones

Portable instrumentation

ςΑ

V_DD

R_SW-osc

C_s

R_EL-osc

V_A

Absolute Maximum Ratings*

Supply Voltage, V_DD

-0.5V to +10V

V_B

Output Voltage, V_Cs

-0.5V to +120V

-25°C to +85°C

-65°C to +150°C

400mW

L_x

GND

Operating Temperature Range

Storage Temperature Range

Power Dissipation

SO-8

Note:

*All voltages are referenced to GND.

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

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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