Press release BoxID: 103027 (PREMA Semiconductor GmbH)
  • PREMA Semiconductor GmbH
  • Robert-Bosch-Str. 6
  • 55129 Mainz
  • Contact person
  • Anne Stroot
  • +49 (6131) 5062-202

Driving White LEDs out of one Battery Cell: 0.9V Boost Driver PR4402 for Currents up to 40mA

(PresseBox) (Mainz, ) With PR4402 PREMA Semiconductor offers the next IC in a family of 0.9V LED boost drivers, operating white LEDs from one battery cell. While PR4401 is best suited for LED currents of up to 20mA, PR4402 is capable of 40mA. The current is set by the inductor value, resulting in a low number of external components. Applications are pocket torches, key ring pendants or head lights and LCD back lighting in single-cell devices like MP3 players.

The one-cell battery operation is very attractive. It allows design of smaller and light weighted products at lower cost. In multiple-cell operation of rechargeable batteries often one cell can be destroyed by a deep discharge. With the PR4401/4402 there is no more reason for using several battery cells or for implementing the classical light bulb. With one battery cell and depending on the application one inductor only as external component, a very small-sized circuitry can be realized with the PR4401/4402, both SOT23 packaged. The driven LED current is almost independent from the supply voltage, which guarantees a constant brightness even with a discharging battery.

PR4401 and PR4402 samples are available upon request. Data sheets can be downloaded from our web site

General information about PREMA Semiconductor GmbH, Mainz - Germany PREMA offers design and production of mixed-signal ASICs and ASSPs - with supply voltages from 0.9V up to 100V - for the ultra low power range up to medium power - development, design, production with in-house fab and test, all in one hand

ASICs and ASSPs created and produced by PREMA can be found in - low noise audio electronics - battery management for consumer goods and household devices - mobile phones and moving sensors - bar code readers and sensors (light and magnetic field) - LED drivers We cordially invite you to visit our website: for more information about us and our services.

PREMA Semiconductor GmbH

PREMA bietet Lösungen für Analog- und Mixed-Signal-ASICs
- mit Versorgungsspannungen von 0,9V bis 100V
- für den Ultra-Low-Power-Bereich bis zu mittleren Leistungen
- Entwicklung, Design, Produktion und Test, alles aus einer Hand

ASICs von PREMA findet man zum Beispiel
- in rauscharmer Audioelektronik
- im Batteriemanagement in Haushaltsgeräten
- in Mobiltelefonen und Bewegungsmeldern
- in Bar-Code-Lesern und Sensorik (Licht, Magnetfeld)

Wir laden Sie herzlich ein uns am Stand Nr. 12-345 zu besuchen, oder für mehr Informationen einen Blick auf unsere Webseite zu werfen.