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 4 1 2 3 SOT-223 Applications ■ Power management in portable equipment ■ Voltage regulation in bias supply circuits ■ Switching regulator in battery charger applications ■ Heavy load driver Figure 1. Internal schematic diagram 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. Table 1. Device summary Order code Marking Package Packaging STN790A N790A SOT-223 Tape and reel June 2008 Rev 4 1/9 www.st.com 9 Electrical ratings 1 STN790A Electrical ratings Table 2. Absolute maximum rating Symbol Parameter Collector-base voltage (IE = 0) -40 V VCER Collector-emitter voltage (R BE = 47 Ω) -40 V VCEO Collector-emitter voltage (IB = 0) -30 V VEBO Emitter-base voltage (IC = 0) -5 V Collector current -3 A ICM Collector peak current (tP < 5 ms) -6 A Ptot Total dissipation at Tamb = 25 °C 1.6 W Tstg Storage temperature -65 to 150 °C 150 °C Value Unit 78 °C/W TJ Table 3. Max. operating junction temperature Thermal data Symbol Rthj-amb 2/9 Unit VCBO IC 1. Value Parameter Thermal resistance junction-ambient (1)__max Device mounted on PCB area of 1 cm 2. STN790A 2 Electrical characteristics Electrical characteristics (Tcase = 25 °C unless otherwise specified) Table 4. Electrical characteristics Symbol Parameter ICBO Collector cut-off current (IE = 0) IEBO Emitter cut-off current (IC = 0) Test conditions Min. Typ. VCB = -30 V VCB = -30 V; TC = 100 °C VEB = -4 V Max. Unit -10 -100 µA µA -10 µA Collector-emitter V(BR)CEO (1) breakdown voltage (IB = 0) IC = -10 mA -30 V Collector-emitter breakdown voltage (RBE = 47 Ω) IC = -10 mA -40 V V(BR)CBO Collector-base breakdown voltage (IE = 0) IC = -100 µA -40 V V(BR)EBO Emitter-base breakdown voltage (IC = 0) IE = -100 µA -5 V V(BR)CER VCE(sat) (1) (1) Collector-emitter saturation voltage IC = -0.5 A IB = -5 mA -0.15 V IC = -1.2 A IB = -20 mA -0.25 V IC = -2 A IB = -20 mA -0.5 V IC = -3 A IB = -100 mA -0.7 V IC = -3 A IB = -100 mA -0.9 V TJ = 100 °C VBE(sat) (1) Base-emitter saturation voltage IC = -1 A IB = -10 mA -0.8 -1 V VBE(on) (1) Base-emitter on voltage IC = -1 A V CE = -2 V -0.8 -1 V IC = -10 mA V CE = -2 V 100 200 400 IC = -500 mA V CE = -2 V 100 200 400 hFE (1) DC current gain IC = -1 A VCE = -2 V 100 IC = -2 A VCE = -1 V 100 160 IC = -3 A VCE = -1 V 90 130 3/9 Electrical characteristics Table 4. Symbol ft STN790A Electrical characteristics (continued) Parameter Transition frequency Test conditions IC = -50 mA Min. V CE = -5 V f = 50 MHz Typ. Max. 100 Unit MHz Resistive load td Delay time tr Rise time ts Storage time tf Fall time IC = -3 A V CC = -20 V 180 220 ns IB1 = -IB2 = -60 mA 160 210 ns see Figure 8 250 300 ns 80 100 ns 1. Pulse duration = 300 µs, duty cycle ≤1.5% 2.1 4/9 Electrical characteristics (curves) Figure 2. DC current gain Figure 3. DC current gain Figure 4. Collector-emitter saturation voltage Figure 5. Base-emitter saturation voltage STN790A Electrical characteristics Figure 6. 2.2 Switching time resistive load Figure 7. Switching time resistive load Test circuit Figure 8. Resistive load switching test circuit 1) Fast electronic switch 2) Non-inductive resistor 5/9 Package mechanical data 3 STN790A Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com 6/9 STN790A Package mechanical data SOT-223 mechanical data mm. DIM. min. typ A max. 1.80 A1 0.02 0.1 B 0.60 0.70 0.85 B1 2.90 3.00 3.15 c 0.24 0.26 0.35 D 6.30 6.50 6.70 e 2.30 e1 4.60 E 3.30 3.50 3.70 H 6.70 7.00 7.30 V 10 o 0046067_L 7/9 Revision history 4 STN790A Revision history Table 5. 8/9 Document revision history Date Revision Changes 24-Mar-2006 3 Updated to new template 26-Jun-2008 4 Updated SOT-223 mechanical data. STN790A Please Read Carefully: Information in this document is provided solely in connection with ST products. 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