Datasheet Details
Part number:
PR4402, PR4401
Manufacturer:
PREMA
File Size:
288.47 KB
Description:
(pr4401 / pr4402) 0.9v boost driver.
Note:
This datasheet PDF includes multiple part numbers: PR4402, PR4401.
Please refer to the document for exact specifications by model.
PR4402, PR4401, (PR4401 / PR4402) 0.9V Boost Driver
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
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 b
PR4402 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 Vba
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