Datasheet > HV833

HV833

更新时间： 2024-11-03 22:48:27

品牌	Logo	应用领域
超科 - SUPERTEX		驱动器高压
页数	文件大小	规格书
9页	501K
描述
High Voltage EL Lamp Driver

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HV833 数据手册

HV833

High Voltage EL Lamp Driver

Features

General Description

❏ 1.8V to 6.5V operating supply voltage

❏ DC to AC conversion

The Supertex HV833 is a high voltage driver designed for driving

EL lamps of up to 35nF (10-12in²). The input supply voltage

range is from 1.8V to 6.5V. 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/disabled by connecting the resistor on

R_SW-OSCto V_DD/ground.

❏ Separately adjustable lamp and converter frequency

❏ Output voltage regulation

❏ Enable/disable function

❏ Patented output timing for high efficiency

❏ <100nA shutdown current

The HV833 has two internal oscillators, a switching MOSFET,

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

switching MOSFET is set by an external resistor connected

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

driverfrequencyissetbyanexternalresistorconnectedbetween

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

between the L_Xand V_DDor V_INpins. A 0.003-0.1µF capacitor is

connected between C_Sand ground. The EL lamp is connected

between V_Aand V_B.

❏ Split supply capability

❏ LCD backlighting

Applications

❏ Portable Transceivers

❏ Remote Control Units

❏ Calculators

The switching MOSFET charges the external inductor and

discharges it into the capacitor at C_S. 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

switching in opposite states to achieve 180V peak-to-peak

across the EL lamp.

❏ PDAs

❏ Global Positioning Systems (GPS)

Typical Application

Enable Signal

ON=V_DD

OFF=0

V_DD

V_A

EL Lamp

R_SW-osc

V_B

C_S

L_X

V_IN

R_EL-osc

Gnd

1N914

HV833MG

100V

05/02/02

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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与HV833相关器件

型号	品牌	获取价格	描述	数据表
HV833_07	SUPERTEX	获取价格	High Voltage EL Lamp Driver
HV833DB1	SUPERTEX	获取价格	EL Lamp Driver
HV833MG	SUPERTEX	获取价格	High Voltage EL Lamp Driver
HV833MG-G	SUPERTEX	获取价格	High Voltage EL Lamp Driver
HV833X	SUPERTEX	获取价格	High Voltage EL Lamp Driver
HV835	SUPERTEX	获取价格	Low Noise Dual EL Lamp Driver
HV835K7-G	SUPERTEX	获取价格	Low Noise Dual EL Lamp Driver
HV839	SUPERTEX	获取价格	High Voltage Dual EL Lamp Driver
HV839K6-G	SUPERTEX	获取价格	High Voltage Dual EL Lamp Driver
HV839MG	SUPERTEX	获取价格	EL Driver, 2-Segment, PDSO10, MSOP-10

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