Datasheet > HV860

HV860

更新时间： 2024-11-25 03:43:11

品牌	Logo	应用领域
超科 - SUPERTEX		驱动器
页数	文件大小	规格书
7页	315K
描述
Low Noise Dimmable EL Lamp Driver

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HV860 数据手册

Supertex inc.

HV860

Initial Release

Low Noise Dimmable EL Lamp Driver

The HV860 has two internal oscillators, a switching

MOSFET, and a high voltage EL lamp driver H-bridge. The

frequency for the switching MOSFET is set by an external

resistor connected between the R_SW-OSCpin and the supply

pin V . The EL lamp driver frequency is set by an external

external inductor is connected^ELb^-Oe^St^Cween the L^D_X^Dand V_DD

pins or V_INfor split supply applications. A 3.0nF capacitor

is connected between C_Sand ground. The EL lamp is

connected between V_Aand V_B.

Features

► Adjustable output regulation for dimming

► 220V_PPoutput voltage for higher brightness

► Single cell lithium ion compatible

► 150nA shutdown current

► Separately adjustable lamp and converter frequencies

► 3x3 QFN-12 package

► Split supply capability

resist^Do^Dr connected between R

pin and V pin. An

Applications

► Mobile cellular phone keypads

► PDAs

► Handheld wireless communication products

► Global Positioning Systems (GPS)

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 110V, the switching MOSFET is turned OFF to

conserve power. The outputs V_Aand V are conﬁgured as

an H bridge and are switching in opposi^Bte states to achieve

110V across the EL lamp.

General Description

EL lamp dimming can be accomplished by changing the

input voltage to the V_REGpin. The V_REGpin allows an external

voltage source to control the V amplitude. The V_CSvoltage

The Supertex HV860 is a high voltage driver designed for

driving Electroluminescent, (EL), lamps of up to 5 square

inches. The input supply voltage range is from 2.5V to 4.5V.

The device uses a single inductor and a minimum number of

passive components. Using the internal reference voltage,

the regulated output voltage is at a nominal voltage of 110V.

The EL lamp will therefore see 110V. An enable pin, (EN),

is available to turn the device on and off via a logic signal.

is approximately 87 times the ^Cv^Soltage seen on V_REG

Typical Application Circuit

V_IN

C_IN

L_X

R_REG

C_S

V_REG

V_DD

V_REFL_X

C_S

V_DD

R_SW

C_DD

R_SW-OSC

R_EL-OSC

V_A

V_B

Lamp

R_EL

1.5V = On

0V = Off

GND

HV860K7

NR040306

Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: (408) 222-8888 FAX: (408) 222-4895 www.supertex.com

12 3 4 5 6 7

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与HV860相关器件

型号	品牌	获取价格	描述	数据表
HV860K7-G	SUPERTEX	获取价格	Low Noise Dimmable EL Lamp Driver
HV861	SUPERTEX	获取价格	Dimmable, Low Noise, Dual EL Lamp Driver
HV861	MICROCHIP	获取价格	HV861 is a low noise, dimmable, high voltage, dual EL Lamp driver designed for driving two
HV861K7-G	SUPERTEX	获取价格	Dimmable, Low Noise, Dual EL Lamp Driver
HV862	SUPERTEX	获取价格	Dimmable, Low Noise, Dual EL Lamp Driver
HV862K7-G	SUPERTEX	获取价格	Dimmable, Low Noise, Dual EL Lamp Driver
HV8708DJ	ETC	获取价格	Interface IC
HV8708PJ	ETC	获取价格	Interface IC
HV8708X	ETC	获取价格	Interface IC
HV87SM-42	SPECTRUM	获取价格	Voltage Controlled Oscillator

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