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PR4401 - (PR4401 / PR4402) 0.9V Boost Driver

General Description

Vcc PIN Name Vcc PIN Function Description Supply voltage Output voltage, LED connection Ground connection UIxx Gnd Vout Gnd Vout top view Topside marking: "UI" (PR4401) or "UJ" (PR4402) with a two-digit lot code Package SOT23-3 or COB on request © PREMA Semiconductor GmbH 2006-2008 Page 1/12

Key Features

  • minimum startup voltage 0.9V 200/250mA peak output current only one external component required battery deep discharge protection.

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Datasheet Details

Part number PR4401
Manufacturer PREMA
File Size 288.47 KB
Description (PR4401 / PR4402) 0.9V Boost Driver
Datasheet download datasheet PR4401 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LED DRIVER PR4401/PR4402 0.9V Boost Driver for White LEDs PR4401/4402 Requires Only One External Component The PR4401 and PR4402* are single cell step-up converters for white LEDs operating from a supply voltage of less than 0.9V. Only one external inductor is needed for operation of a white LED. PR4401 is recommended for mean LED currents of up to 20mA, PR4402 for up to 40mA. This makes PR4401 and PR4402 ideal for use in low-cost or small-sized applications such as LED flashlights or LCD backlighting for portable devices. Features • • • • minimum startup voltage 0.9V 200/250mA peak output current only one external component required battery deep discharge protection Applications • Small-sized LED torches • LCD backlighting • LED indicator lights Typical Application Vbat =1.2V or 1.