Datasheet > HV831

HV831

更新时间： 2024-11-04 03:43:11

品牌	Logo	应用领域
超科 - SUPERTEX		驱动器高压
页数	文件大小	规格书
8页	523K
描述
High Voltage Dual EL Lamp Driver

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中文翻译

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HV831 数据手册

HV831

High Voltage Dual EL Lamp Driver

Features

General Description

ꢀ

Independent input control for lamp selection

The Supertex HV831 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. This device

uses a single inductor and minimum number of passive components

to drive two EL lamps. The nominal regulated output voltage of 80V

is applied to the EL lamps. The two EL lamps can be turned on

and off by the two logic input control pins, C and C₂. The device is

disabled when both C₁and C₂(pins 1 and 4)¹are at logic low.

Split supply capability

Patented output timing

One miniature inductor to power both lamps

Low shutdown current

Wide input voltage range 2.0V to 5.0V

Output voltage regulation

No SCR output

Available in 10 - pin MSOP package

The HV831 has an internal oscillator, a switching MOSFET, and two

high voltage ELlamp drivers. An external resistor connected between

the R_SW-OSCand the voltage supply pin V sets the frequency for the

switching MOSFET. The EL lamp driver^Df^Drequency is set by dividing

the MOSFET switching frequency by 128. An external inductor is

connected between the L_Xand the V_DDpins. Depending on the EL

lamp size, a 1.0 to 10.0nF, 100V capacitor is connected between C_S

and Ground. The two EL lamps are connected between EL₁to Com

and EL₂to Com.

Applications

ꢀ

Mobile cellular phones, dual display

Keypad and LCD backlighting

Portable instrumentation

Dual segment lamps

Hand held wireless communication devices

The switching MOSFETcharges the external inductor and discharges

it into the capacitor at C . The voltage at C increases. Once the

voltage at C reaches a n^Sominal value of 80V,^Sthe switching MOSFET

is turned off^Sto conserve power. The outputs EL₁to Com and EL₂to

Com are conﬁgured as H bridges and switch in opposite states to

achieve 160V across the EL lamp.

Typical Application Circuit

V_DD= ON

0 = OFF

EL Lamp 1¹

V_DD= ON

0 = OFF

C₁

EL₁

EL₂

V_DD

R_SW-OSC

EL Lamp 2¹

R_SW-OSC

Com

V_DD

C_DD

C_S

L_X

GND

HV831MG

L_X

C_S

V_IN

C_IN

The bigger sized lamp should be tied to EL1 and the smaller

sized lamp to EL2 terminals (pins 10 and 9 respectively)

A081005

12 3 4 5 6 7 8

中文翻译

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与HV831相关器件

型号	品牌	获取价格	描述	数据表
HV831MG	SUPERTEX	获取价格	High Voltage Dual EL Lamp Driver
HV832	SUPERTEX	获取价格	Dual High Voltage, Low Noise EL Lamp Driver
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

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