Datasheet > HV860

HV860

更新时间： 2022-04-23 23:00:11

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

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

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

下载PDF

与HV860相关器件

型号	品牌	描述	获取价格	数据表
HV860K7-G	SUPERTEX	Low Noise Dimmable EL Lamp Driver	获取价格
HV861	SUPERTEX	Dimmable, Low Noise, Dual EL Lamp Driver	获取价格
HV861	MICROCHIP	HV861 is a low noise, dimmable, high voltage, dual EL Lamp driver designed for driving two	获取价格
HV861K7-G	SUPERTEX	Dimmable, Low Noise, Dual EL Lamp Driver	获取价格
HV862	SUPERTEX	Dimmable, Low Noise, Dual EL Lamp Driver	获取价格
HV862K7-G	SUPERTEX	Dimmable, Low Noise, Dual EL Lamp Driver	获取价格