Datasheet > HV830

HV830

更新时间： 2024-11-22 14:53:43

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
6页	781K
描述
HV830 is a high-voltage driver designed for driving EL lamps of up to 50nF. EL lamps greater than

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HV830 数据手册

Supertex inc.

HV830

High Voltage EL Lamp Driver IC

Features

General Description

► Processed with HVCMOS^®technology

► 2.0 to 9.5V operating supply voltage

► DC to AC conversion

The Supertex HV830 is a high-voltage driver designed for

driving EL lamps of up to 50nF. EL lamps greater than 50nF

can be driven for applications not requiring high brightness.

The input supply voltage range is from 2.0 to 9.5V. 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 ±100V. The chip can be enabled

by connecting the resistors on the RSW-Osc and REL-Osc

pins to the VDD pin, and disabled when connected to GND.

► 200V peak-to-peak typical output voltage

► Large output load capability typically 50nF

► Permits the use of high-resistance elastomeric lamp

components

► Adjustable output lamp frequency to control lamp

color, lamp life, and power consumption

► Adjustable converter frequency to eliminate harmon-

The HV830 has two internal oscillators, a switching MOSFET

and a high-voltage EL lamp driver. The frequency of the

switching converter MOSFET is set by an external resistor

connected between the RSW-Osc and the VDD pins. The EL

lamp driver frequency is set by an external resistor connected

between the REL-Osc and the VDD pins. An external induc-

tor is connected between the LX and VDD pins. A 0.01µF to

0.1µF capacitor is connected between the CS pin and the

GND. The ELlamp is connected between the VAand VB pins.

ics and optimize power consumption

► Enable/disable function

► Low current draw under no load condition

► Very low standby current - 30nA typical

Applications

► Handheld personal computers

► Electronic personal organizers

► GPS units

The switching MOSFET charges the external inductor and

discharges it into the CS capacitor. The voltage at CS will

start to increase. Once the voltage at CS reaches a nominal

value of 100V, the switching MOSFET is turned OFF to con-

serve power. The output pins VA and VB are conﬁgured as

an H-bridge and are switched in opposite states to achieve

200V peak-to-peak across the EL lamp.

► Pagers

► Cellular phones

► Portable instrumentation

Block Diagram

VDD

Switch

Osc

RSW-Osc

GND

Output

Disable

V_REF

Osc

REL-Osc

Doc. # DSFP-HV830

E072913

Supertex inc.

www.supertex.com

12 3 4 5 6

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