HV833MG datasheet(1/10 Pages) SUTEX

部品番号	HV833MG

部品情報	High Voltage EL Lamp Driver

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メーカー	SUTEX [Supertex, Inc]

ホームページ	http://www.supertex.com

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HV833

Features

1.8V to 6.5V operating supply voltage

DC to AC conversion

Separately adjustable lamp and converter

frequency

Output voltage regulation

Enable/disable function

Patented output timing for high efﬁciency

<100nA shutdown current

Split supply capability

LCD backlighting

Applications

Portable Transceivers

Remote Control Units

Calculators

PDAs

Global Positioning Systems (GPS)

►

General Description

The Supertex HV833 is a high voltage driver designed for driving EL

lamps of up to 35nF (10-12in2). The input supply voltage range is

from 1.8V to 6.5V. 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 ±90V. The chip can be enabled/

disabled by connecting a resistor between the R

SW-Osc pin and the

V

DD/GND pins.

The HV833 has two internal oscillators, a switching MOSFET, and a

high voltage EL lamp driver. The frequency for the switching MOSFET

is set by an external resistor connected between the R

SW-Osc pin and

the V

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

resistor connected between the R

EL-Osc pin and the VDD pin. An external

inductor is connected between the L

X pin and VDD or VIN pin. A 0.003-

0.1µF capacitor is connected between the C

S pin and the GND pin.

The EL lamp is connected between the V

A pin and the VB pin.

The switching MOSFET charges the external inductor and discharges

it into the capacitor at C

S. The voltage at CS will start to increase.

Once the voltage at C

S reaches a nominal value of 90V, the switching

MOSFET is turned OFF to conserve power. The outputs V

A and VB

are conﬁgured as an H bridge and are switching in opposite states to

achieve 180V peak-to-peak across the EL lamp.

Typical Application Circuit

High Voltage EL Lamp Driver

+

_

CS

100V

VIN

LX

1N914

Enable Signal

ON = VDD

OFF = 0

EL Lamp

1

2

3

4

8

6

5

HV833MG

7

VDD

VA

VB

CS

LX

VDD

RSW-Osc

REL-Osc

GND

同様の部品番号 - HV833MG

メーカー	部品番号	データシート	部品情報
Supertex, Inc	HV833MG	501Kb / 9P	High Voltage EL Lamp Driver
	HV833MG-G	1,009Kb / 8P	High Voltage EL Lamp Driver
	HV833MG-G	673Kb / 5P	High Voltage EL Lamp Driver IC

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同様の説明 - HV833MG

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