SP4405UEB

更新时间： 2024-11-18 22:18:55

品牌	Logo	应用领域
西伯斯 - SIPEX		驱动器
页数	文件大小	规格书
20页	162K
描述
Low Voltage Electroluminescent Lamp Driver with Regulated Output Voltage

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中文翻译

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数据手册

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SP4405UEB 数据手册

SP4405

Low Voltage Electroluminescent Lamp Driver

with Regulated Output Voltage

■ +2.2V to +4.5V Battery Operation

■ DC-to-AC Converter Produces

160V_PPtypical for EL Display Panels

■ Single Resistor Controlled Internal

Oscillator

■ Low Current Standby Mode

■ Internal Feedback Loop Maintains

a Constant Regulated EL Lamp

Voltage Output

APPLICATIONS

■ Pagers

■ Cellular Phones

■ PDAs

DESCRIPTION

The SP4405 is a high voltage output DC-AC inverter specifically designed to drive

electroluminescent lamps to backlight liquid crystal displays, keypads, and backlit readouts

used in battery operated portable equipment. The SP4405 will operate from a +2.2V to +4.5V

battery source. The device features an internal feedback loop that regulates the lamp voltage

output to 160V_PP(typical) with varying supply voltages to maintain constant EL lamp brightness

over the life of the battery. The device also has a low power shutdown mode which draws less

than 50nA (typical), ideal for low power portable products. One external inductor is required

to generate the high voltage AC output. One external resistor is used to set the internal

oscillator frequency. The SP4405 is ideal for portable applications such as pagers, cellular

phones, PDAs, and other portable applications using LCDs in dim or low light environments.

The SP4405 is offered in 8-pin SOIC and 8-pin µSOIC packages.

V_BATTERY

ELEN

R_OSC

ELEN

V_SS

470µH

SP4405

V_DD

COIL

C_INT

7 C_INT

SP4405

R_OSC

450kΩ

*D1

1N4148

R_OSC

COIL

V_DD

C_INT

0.1µF

1nF

EL1 4

EL2

V_SS

EL1

EL2

EL Lamp

*optional device

SP4405DS/18

SP4405 Low Voltage Electroluminescent Lamp Driver

12 3 4 5 6 7...20

中文翻译

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