STN790A

STN790A Medium current, high performance, low voltage PNP transistor Features ■ Very low collector to emitter saturation voltage ■ DC current gain, hFE >100 ■ 3 A continuous collector current ■ 40 V breakdown voltage V(BR)CER ■ SOT-223 plastic package for surface mounting circuits in tape and reel packing Applications ■ Power management in portable equipment ■ Voltage regulation in bias supply circuits ■ Switching regulator in battery charger applications ■ Heavy load driver Description The device in manufactured in low voltage PNP planar technology by using a “Base Island” layout. The resulting transistor shows exceptional high gain performance coupled with very low saturation voltage. 4 1 SOT-223 3 2 Figure 1. Internal schematic diagram Table 1. Device summary Order code Marking STN790A N790A June 2008 Package SOT-223 Rev 4 Packaging Tape and reel 1/9 www.st.com 9 Electrical ratings 1 Electrical ratings Table 2. Absolute maximum rating Symbol Parameter VCBO VCER VCEO VEBO IC ICM Ptot Tstg TJ Collector-base voltage (IE = 0) Collector-emitter voltage (RBE = 47 Ω) Collector-emitter voltage (IB = 0) Emitter-base voltage (IC = 0) Collector current Collector peak current (tP < 5 ms) Total dissipation at Tamb = 25 °C Storage temperature Max. operating junction temperature Table 3. Thermal data Symbol Parameter Rthj-amb Thermal resistance junction-ambient (1)__max 1. Device mounted on PCB area of 1 cm2. STN790A Value -40 -40 -30 -5 -3 -6 1.6 -65 to 150 15...