Datasheet > HV845DB1

HV845DB1

更新时间： 2024-02-25 23:35:46

品牌	Logo	应用领域
超科 - SUPERTEX		驱动器
页数	文件大小	规格书
2页	307K
描述
Low Noise, Dual EL Lamp Driver

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HV845DB1 数据手册

HV845DB1

Low Noise, Dual EL Lamp Driver

General Description

Speciﬁcations

Value

3.0V

V_DDinput voltage:

V_INinductor supply voltage:

Supply Current:

The Supertex HV845DB1 demo board contains all

necessary circuitry to demonstrate the features of the

HV845 dual EL lamp driver.

3.3V - 4.2V

13mA

Simply connect it to a power supply and a lamp as

shown below. For additional assistance in designing

EL driver circuits, please refer to application notes AN-

H33 (effect of external components on performance of

Supertex EL drivers).

Lamp Size:

2.3in²

Lamp Frequency:

Converter frequency:

195Hz

98kHz

Board Layout and Connection Diagram

C₁

V_DD

C₂

Com1

EL₁

GND

V_IN

EL₂

Com2

Actual Size: 17.3mm x 14.4mm

Connections:

Controls C₁and C₂: Lamp Selection

GND: Circuit Ground

Various modes of the device are selected via the C and C₂Connect to V and V_INnegative terminals. Supply bypass

pins. When C₁is connected to V /GND, Lamp 1 (EL¹₁) will be capacitorforb^Do^DthV_DDandV_INareprovidedonthedemoboard.

ON/OFF. When C₂is connected ^Dto^DV_DD/GND, lamp 2 (EL₂) will External supply bypass capacitors are not necessary.

be ON/OFF. When both C₁and C₂are connected to GND,

the device shuts down. These inputs may be connected to EL and EL₂: Lamp Connections

a mechanical switch, or to a logic circuit output that has a Con¹nects to lamps 1 and 2. Polarity is irrelevant.

source impedance of less than 20kΩ.

Com1 and Com2: Lamp Connections

Su^DDpplies the HV845 EL driver IC. The supplied circuit is irrelevant.

optimized for 3.0V operation.

V : IC Supply

Connects to the other side of lamps 1 and 2. Polarity is

V : Inductor Supply

Su^INpplies the high voltage power converter. The demoboard

is optimized for 3.3V to 4.2V operation.

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