ST 2stn2540 free download

File name 2stn2540.pdf

2STN2540 Low voltage fast-switching PNP power bipolar transistor Features Very low collector-emitter saturation voltage High current gain characteristic 4 Fast switching speed Surface mounting device in medium power SOT-223 package 3 2 1 Applications Emergency lighting SOT-223 LED CCFL drivers (back lighting) Voltage regulation Figure 1. Internal schematic diagram Relay driver Description The device is a PNP transistor manufactured using new "PB-HCD" (Power Bipolar High Current Density) technology. The resulting transistor shows exceptional high gain performances coupled with very low saturation voltage. Table 1. Device summary Order code Marking Package Packaging 2STN2540 N2540 SOT-223 Tape and reel January 2008 Rev 3 1/9 www.st.com 9 Electrical ratings 2STN2540 1 Electrical ratings Table 2. Absolute maximum rating Symbol Parameter Value Unit VCBO Collector-base voltage (IE = 0) -40 V VCEO Collector-emitter voltage (IB = 0) -40 V VEBO Emitter-base voltage (IC = 0) -6 V IC Collector current -5 A ICM Collector peak current (tP < 5ms) -10 A IBM Base peak current (tP < 5ms) -2 A Ptot Total dissipation at Tamb = 25