Datasheet > HV832

HV832

更新时间： 2024-11-03 22:33:43

品牌	Logo	应用领域
超科 - SUPERTEX		驱动器
页数	文件大小	规格书
6页	51K
描述
Dual High Voltage, Low Noise EL Lamp Driver

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HV832 数据手册

HV832

Dual High Voltage, Low Noise EL Lamp Driver

Features

General Description

❏ 8-pin dual EL driver IC

The Supertex HV832 is a high voltage driver designed for driving

two EL lamps with a combined area of 3.5 square inches. The

input supply voltage range is from 2.0V to 5.0V. The device is

designed to reduce the amount of audible noise emitted by the

lamp. 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.

❏ Input control for lamp selection

❏ Split supply capability

❏ Patented output timing

❏ One minature inductor to power both lamps

❏ 150nA shutdown current

The HV832 has an internal oscillator, a switching MOSFET, and

twohighvoltageELlampdrivers. Thefrequencyfortheswitching

MOSFETis set at 51KHz nominal. The ELlamp driver frequency

is set by dividing the MOSFET switching frequency by 128. An

external inductor is connected between the L_Xand V_DDpins or

V_INfor split supply applications. A 0.001 to 0.01µF, 100V

capacitor is connected between C_Sand Ground. The EL lamps

are connected between EL₁to Com and EL₂to Com.

❏ Wide input voltage range (2.0V to 5.0V)

❏ Output voltage regulation

❏ No SCR output

Applications

❏ Dual display cell phones

❏ Keypad and LCD backlighting

❏ Dual segment lamps

An input control pin is available to select various modes of the

device. Each logic pulse applied to the control pin will cause the

device to change to the next mode. The sequence for the modes

is: (1) EL₁on only, (2) EL₂on only, (3) both EL₁and EL₂on, and

(4) device shuts down. During power up of the device, the mode

will default to shut down.

❏ Handheld wireless communication devices

The switching MOSFET charges the external inductor and

discharges it into the capacitor at Cs. The voltage at C_Swill start

to increase. Once the voltage at Cs reaches a nominal value of

90V, the switching MOSFETis turned off to conserve power. The

outputs EL₁to Com and EL₂to Com are configured as H bridges

EL1/EL2 and Com are switching in opposite states to achieve

180V across the EL lamp.

Typical Application

V_DD

Logic Input Pulse

EL Lamp 1

EL₂

EL₁

V_DD

EL Lamp 2

Com

C_S

Control

GND

L_X

V_IN

C_S

HV832MG

C_IN

L_X

12/13/01

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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与HV832相关器件

型号	品牌	获取价格	描述	数据表
HV832DB1	SUPERTEX	获取价格	Dual EL Lamp Driver
HV832MG	SUPERTEX	获取价格	Dual High Voltage, Low Noise EL Lamp Driver
HV832MG-G	SUPERTEX	获取价格	EL Driver, 3-Segment, PDSO8, 3 X 3 MM, 1.10 MM HEIGHT, 0.65 MM PITCH, GREEN, MO-187AA, MSO
HV832X	SUPERTEX	获取价格	Dual High Voltage, Low Noise EL Lamp Driver
HV833	SUPERTEX	获取价格	High Voltage EL Lamp Driver
HV833	MICROCHIP	获取价格	HV833 is a high voltage driver designed for driving EL lamps of up to 35nF (10-12in2). The
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

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