Datasheet > HV850

HV850

更新时间： 2024-02-10 13:57:44

品牌	Logo	应用领域
超科 - SUPERTEX		驱动器
页数	文件大小	规格书
6页	243K
描述
High Voltage Low Noise Inductorless EL Lamp Driver

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技术参数
数据手册

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HV850 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Transferred	零件包装代码：	DIE
包装说明：	DIE,	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.76	接口集成电路类型：	EL DISPLAY DRIVER
JESD-30 代码：	X-XUUC-N	JESD-609代码：	e0
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	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	最大供电电压：	4.2 V
最小供电电压：	3 V	标称供电电压：	3.5 V
表面贴装：	YES	温度等级：	OTHER
端子面层：	TIN LEAD	端子形式：	NO LEAD
端子位置：	UPPER	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

HV850 数据手册

HV850

________________________________________________________________________________

Initial Release

High Voltage Low Noise Inductorless EL Lamp Driver

Features

General Description

Supertex HV850 is a high voltage electroluminescent

(EL) Lamp Driver IC. It is designed to drive EL lamps

of up to 2.0in², with capacitive values up to 4.5nF.

HV850 converts a low voltage DC input to a high

voltage AC output across an EL lamp. It uses a

charge pump scheme to boost the input voltage

eliminating the need for an external inductor, diode,

and high voltage capacitor commonly found in

conventional topologies.

ꢀ No external components required when using an

external EL clock frequency

ꢀ EL frequency can be set by an external resistor

ꢀ Low Noise

ꢀ DC to AC converter

ꢀ Drives up to 4.5nF load (approx. 2.0²inches)

ꢀ Output voltage regulation

ꢀ Enable function

The charge pump circuit discharges its energy into

an EL lamp through a high voltage H-bridge. Once

the voltage reaches its regulated limit, it is turned off

to conserve power. The EL lamp is then discharged

to ground and the H-bridge changes state to allow

the charge pump to charge the EL lamp in the

opposite direction.

Applications

ꢀ Cell phone keypads and displays

ꢀ Transceivers

ꢀ MP3 Players

ꢀ Watches

The EL lamp frequency can be set either by an

external resistor R_ELor by applying an external clock

where the clock frequency is divided by 128 to set

the EL lamp frequency.

ꢀ Pagers

ꢀ Measuring instruments/gauges

Typical Application Circuits

V_DD=ON

GND=OFF

V_DD=ON

V_A

GND=OFF

V_DD

R_EL

V_DD

R_EL

C_DD

V_B

Lamp

V_A

V_B

V_DD

R_EL

V_DD

GND

C_DD

Lamp

Clk-in

Clk-en

GND

HV850MG

Clk-in

Clk-en

V_DD

GND

HV850MG

EL lamp frequency set by R_EL

EL lamp frequency set by an external clock

Supertex, Inc.

1/21/04

12 3 4 5 6

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