STX790A 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 Applications ■ Power management in portable equipment ■ Voltage regulation in bias supply circuits ■ Switching regulator in battery charger applications ■ Heavy load driver TO-92 Figure 1. TO-92AP 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 STX790A X790A TO-92 Bulk STX790A-AP X790A TO-92 AP Ammopack June 2008 Rev 3 1/10 www.st.com 10 Electrical ratings 1 STX790A Electrical ratings Table 2. Absolute maximum rating Symbol Value Unit VCBO 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 0.9 W Tstg Storage temperature -65 to 150 °C 150 °C Value Unit 44.6 139 °C/W °C/W IC TJ Table 3. Symbol Rthj-case Rthj-amb 2/10 Parameter Max. operating junction temperature Thermal data Parameter Thermal resistance junction-case Thermal resistance junction-amb __max __max STX790A 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 = -1A IB = -10mA -0.8 -1 V VBE(on) (1) Base-emitter on voltage IC = -1A V CE = -2V -0.8 -1 V IC = -10mA V CE = -2V 100 200 400 IC = -500mA V CE = -2V 100 200 400 IC = -1A V CE = -2V 100 IC = -2A V CE = -1V 100 160 IC = -3A V CE = -1V 90 130 hFE (1) DC current gain 3/10 Electrical characteristics Table 4. Symbol ft td tr ts tf STX790A Electrical characteristics (continued) Parameter Transition frequency Resistive load Delay time Rise time Storage time Fall time Test conditions IC = -50 mA Min. V CE = -5 V f = 50 MHz IC = -3 A V CC = -20 V Typ. Max. 100 MHz 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 4/10 Unit 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 STX790A 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 5/10 Package mechanical data 3 STX790A 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 6/10 STX790A Package mechanical data TO-92 bulk shipment mechanical data mm. DIM. MIN. TYP MAX. A 4.32 4.95 b 0.36 0.51 D 4.45 4.95 E 3.30 3.94 e 2.41 2.67 e1 1.14 1.40 L 12.70 15.49 R 2.16 2.41 S1 0.92 1.52 W 0.41 V 0.56 5o 0102782 D 7/10 Package mechanical data STX790A TO-92 ammopack shipment (suffix”-AP”) mechanical data Dim. A1 T T1 T2 d P0 P2 F1,F2 F3 delta H W W0 W1 W2 H H3 H0 H1 D0 t L I1 delta P Min mm Typ 12.50 5.65 2.44 4.98 -2.00 17.50 5.70 8.50 18.00 6.00 9.00 18.50 0.5 15.50 1 16.00 3.80 4.00 Max 4.80 3.80 1.60 2.30 0.48 12.90 7.05 2.94 5.48 2.00 19.00 6.30 9.25 0.50 20.50 1.5 16.50 25.00 4.20 0.90 11.00 12.70 6.35 2.54 5.08 3.00 -1.00 1.00 0050910S 8/10 STX790A 4 Revision history Revision history Table 5. Document revision history Date Revision Changes 24-Mar-2003 1 Initial release. 29-Mar-2006 2 New template. 25-Jun-2008 3 Updated TO-92 mechanical data. 9/10 STX790A Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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