Product Brief 400 V Depletion MOSFET in SOT-223 Ideal for constant current source applications Infineon has launched a new 400 V Depletion MOSFET in the SOT-223 package, adding to the portfolio up to 600 V. This new space saving, low gate threshold voltage device is ideally suited for a variety of applications including lighting, SMPS and offline low voltage dropout Regulators. The product is qualified to AEC Q101, making it suitable for automotive applications and all applications demanding the highest levels of quality. In constant current source applications the biggest challenge is to maintain the output current at different input voltages, especially in start-up circuits and offline voltage Regulators. A Depletion MOSFET can overcome this issue. Key features ››Low input capacitance ››Low V (-2.1 V to -1.0 V) ››Small package size ››Halogen free ››Qualified according to AEC Q101 GS(th) Key benefits The graph below shows the output currents of a resistive solution and a Depletion MOSFET solution at different input voltages. The Depletion MOSFET solution delivers a constant current irrespective of the input voltage. ››High efficiency ››PCB space and cost saving ››High system reliability ››Easy to design-in Output current versus input voltage Applications ››Lighting ››SMPS ››Low voltage dropout Regulator (LDO) ››Battery charger 1000 Output current [µA] 900 800 700 600 500 80 90 100 110 120 130 Input voltage [VAC] Resistor solution www.infineon.com/depletion Depletion MOSFET solution 140 Product Brief Package information SOT-223 Package outline Engineering drawings Footprint Engineering drawings Wave soldering 3.5 4 1.4 1.7 Reflow soldering B 1 0.25 M A 2 3 2.3 4.6 0.28 ±0.04 0.25 M B 1.7 1.4 3.5 ±0.2 0.5 MIN. 7 ±0.3 4 0.7 ±0.1 4.8 0.1 MAX. 4.8 1.6±0.1 6.5 ±0.2 3 ±0.1 A 1.2 1.1 1.4 0.9 0...10˚ SOT223-PO V04 Product information Product VDS [V] RDS(on) max. [Ω] IDSS min. [A] VGS(th) min. [V] Ciss max. [pF] BSP179 400 24.0 0.04 -2.1 135 Published by Infineon Technologies Austria AG 9500 Villach, Austria © 2016 Infineon Technologies AG. All Rights Reserved. Please note! THIS DOCUMENT IS FOR INFORMATION PURPOSES ONLY AND ANY INFORMATION GIVEN HEREIN SHALL IN NO EVENT BE REGARDED AS A WARRANTY, GUARANTEE OR DESCRIPTION OF ANY FUNCTIONALITY, CONDITIONS AND/OR QUALITY OF OUR PRODUCTS OR ANY SUITABILITY FOR A PARTICULAR PURPOSE. WITH REGARD TO THE TECHNICAL SPECIFICATIONS OF OUR PRODUCTS, WE KINDLY ASK YOU TO REFER TO THE RELEVANT PRODUCT DATA SHEETS PROVIDED BY US. OUR CUSTOMERS AND THEIR TECHNICAL DEPARTMENTS ARE REQUIRED TO EVALUATE THE SUITABILITY OF OUR PRODUCTS FOR THE INTENDED APPLICATION. WE RESERVE THE RIGHT TO CHANGE THIS DOCUMENT AND/OR THE INFORMATION GIVEN HEREIN AT ANY TIME. Order number: B111-I0227-V1-7600-EU-EC-P Date: 02 / 2016 Additional information For further information on technologies, our products, the application of our products, delivery terms and conditions and/or prices please contact your nearest Infineon Technologies office (www.infineon.com). Warnings Due to technical requirements, our products may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies office. Except as otherwise explicitly approved by us in a written document signed by authorized representatives of Infineon Technologies, our products may not be used in any life endangering applications, including but not limited to medical, nuclear, military, life critical or any other applications where a failure of the product or any consequences of the use thereof can result in personal injury.