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| MC79xxCT Series New Product Vishay formerly General Semiconductor 3-Terminal Fixed Negative Voltage Regulators Pin Arrangement Description These voltage regulators are intended as complements to the popular MC78xx Series devices. These negative regulators are available in the same seven-voltage options as the MC78xx devices. In addition, one extra voltage option commonly employed in MECL systems is also available in the negative MC79xx Series. Available in fixed output voltage options from -5.0 to -24 volts, these regulators employ current limiting, thermal shutdown, and safe-area compensation - making them remarkably rugged under most operating conditions. With adequate heatsinking they can deliver output currents in excess of 1.5 ampere. TO-220 1. Ground 3 2. Input 2 1 3. Output (heatsink connected to pin 2) Standard Application Features Input MC79xx Output Co 0.1F * Output current in excess of 1.5 Ampere * No external components required * Internal thermal overload protection * Internal short-circuit current limiting * Output transistor safe-area compensation * Output voltage offered in 2% tolerance Cin 0.33F Notes: A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0V more negative even during the high point on the input ripple voltage. xx = these two digits of the part number indicate output voltage. Cin is required if regulator is located an appreciable distance from power supply filter. Co improves stability and transient response. Mechanical Data Case: TO-220 Package Weight: approx. 2.24g Case outline is on the back page Internal Block Diagram GND R1 R2 Reference Voltage + -Q1 Q2 Short Circuit Protection Output I1 I2 RSC Input Document Number 74814 11-Jun-02 www.vishay.com 1 MC79xxCT Series Vishay formerly General Semiconductor Maximum Ratings Parameter Input Voltage Input Voltage (1) (2) (3) Ratings at 25C ambient temperature unless otherwise specified. Symbol Vin Vin PD TJ Tstg Value -30 -40 15 -20 to +150 -65 to +150 Unit V V W C C Power Dissipation Operating Junction Temperature Range Storage Junction Temperature Range Notes: (1) MC7905 to MC7918 (2) MC7924 (3) Follow the derating curve. When TJ exceeds 150C, the internal circuit cuts off the output Electrical Characteristics - MC7905 Vin = -10V, Iout = 500mA, Cin = 2F, Cout = 1F; TJ = 0C to 125C, unless otherwise noted. Parameter Symbol Test Circuit 1 Conditions TJ = 25C Output Voltage Vo Vin = -7 to -20V, Io = 5mA to 1A Vin = -7 to -25V Vin = -8 to -12V Io = 5mA to 1.5A Io = 250mA to 750mA TJ = 25C Vin = -7 to -25V Io = 5mA to 1A f = 10Hz to 100KHz Vin = -8 to -18V Io = 100mA, f = 120Hz Io = 1.0A, TJ = 25C 1 1 TJ = 25C Io = 5mA, TJ = 0 to125C Min. -4.90 -4.85 -- -- -- -- -- -- -- -- 62 -- -- -- Typ. -5.0 -- 3 1 10 3 2 -- -- 40 74 1.1 2.1 -0.4 Max. -5.10 -5.15 100 50 100 50 4 1.3 0.5 -- -- -- -- -- V Unit Line Regulation (TJ = 25C) Load Regulation (TJ = 25C) Quiescent Current Quiescent Current Change (TJ = 25C) Output Noise Voltage (TJ = 25C) Ripple Rejection Ratio Dropout Voltage Peak Output Current Temp. Coefficient of Output Voltage REG line REG load Iq Iq Vn RR Vdrop Io-peak Vo/TA 1 mV 1 2 2 1 3 mV mA mA V dB V A mV/C 2 of 8 Note: Where the condition TJ = 25C is specified, pulse testing (<10ms) with low duty cycle is required to maintain junction temperature stability. www.vishay.com 2 Document Number 74814 11-Jun-02 MC79xxCT Series Vishay formerly General Semiconductor Electrical Characteristics - MC7906 Vin = -11V, Iout = 500mA, Cin = 2F, Cout = 1F; TJ = 0C to 125C, unless otherwise noted. Parameter Symbol Test Circuit 1 Conditions TJ = 25C Output Voltage Vo Vin = -8 to -21V, Io = 5mA to 1A Vin = -8 to -25V Vin = -9 to -13V Io = 5mA to 1.5A Io = 250mA to 750mA TJ = 25C Vin = -8 to -25V Io = 5mA to 1A f = 10Hz to 100KHz Vin = -9 to -19V Io = 100mA, f = 120Hz Io = 1.0A, TJ = 25C 1 1 TJ = 25C Io = 5mA, TJ = 0 to125C Min. -5.88 -5.82 -- -- -- -- -- -- -- -- 60 -- -- -- Typ. -6.0 -- 4 1.5 10 3 2 -- -- 44 73 1.1 2.1 -0.5 Max. -6.12 -6.18 120 60 120 60 4 1.3 0.5 -- -- -- -- -- V Unit Line Regulation (TJ = 25C) Load Regulation (TJ = 25C) Quiescent Current Quiescent Current Change (TJ = 25C) Output Noise Voltage (TJ = 25C) Ripple Rejection Ratio Dropout Voltage Peak Output Current Temp. Coefficient of Output Voltage REG line 1 mV REG load Iq Iq Vn RR Vdrop Io-peak Vo/TA 1 2 2 1 3 mV mA mA V dB V A mV/C Electrical Characteristics - MC7908 Vin = -14V, Iout = 500mA, Cin = 2F, Cout = 1F; TJ = 0C to 125C, unless otherwise noted. Parameter Symbol Test Circuit 1 Conditions TJ = 25C Output Voltage Vo Vin = -10.5 to -23V, Io = 5mA to 1A Vin = -10.5 to -25V Vin = -11 to -15V Io = 5mA to 1.5A Io = 250mA to 750mA TJ = 25C Vin = -10.5 to -25V Io = 5mA to 1A f = 10Hz to 100KHz Vin = -11 to -21V Io = 100mA, f = 120Hz Io = 1.0A, TJ = 25C 1 1 TJ = 25C Io = 5mA, TJ = 0 to125C Min. -7.84 -7.76 -- -- -- -- -- -- -- -- 56 -- -- -- Typ. -8.0 -- 6 2 12 4 2.2 -- -- 52 71 1.1 2.1 -0.6 Max. -8.16 -8.24 160 80 160 80 4.5 1 0.5 -- -- -- -- -- V Unit Line Regulation (TJ = 25C) Load Regulation (TJ = 25C) Quiescent Current Quiescent Current Change (TJ = 25C) Output Noise Voltage (TJ = 25C) Ripple Rejection Ratio Dropout Voltage Peak Output Current Temp. Coefficient of Output Voltage Document Number 74814 11-Jun-02 REG line 1 mV REG load Iq Iq Vn RR Vdrop Io-peak Vo/TA 1 2 2 1 3 mV mA mA V dB V A mV/C www.vishay.com 3 MC79xxCT Series Vishay formerly General Semiconductor Electrical Characteristics - MC7909 Vin = -15V, Iout = 500mA, Cin = 2F, Cout = 1F; TJ = 0C to 125C, unless otherwise noted. Parameter Symbol Test Circuit 1 Conditions TJ = 25C Output Voltage Vo Vin = -11.5 to -24V, Io = 5mA to 1A Vin = -11.5 to -27V Vin = -12 to -16V Io = 5mA to 1.5A Io = 250mA to 750mA TJ = 25C Vin = -11.5 to -27V Io = 5mA to 1A f = 10Hz to 100KHz Vin = -12 to -22V Io = 100mA, f = 120Hz Io = 1.0A, TJ = 25C 1 1 TJ = 25C Io = 5mA, TJ = 0 to125C Min. -8.82 -8.73 -- -- -- -- -- -- -- -- 56 -- -- -- Typ. -9.0 -- 7 2 12 4 2.2 -- -- 58 71 1.1 2.1 0.6 Max. -9.18 -9.27 180 90 180 90 4.5 1 0.5 -- -- -- -- -- V Unit Line Regulation (TJ = 25C) Load Regulation (TJ = 25C) Quiescent Current Quiescent Current Change (TJ = 25C) Output Noise Voltage (TJ = 25C) Ripple Rejection Ratio Dropout Voltage Peak Output Current Temp. Coefficient of Output Voltage REG line 1 mV REG load Iq Iq Vn RR Vdrop Io-peak Vo/TA 1 2 2 1 3 mV mA mA V dB V A mV/C Electrical Characteristics - MC7912 Vin = -19V, Iout = 500mA, Cin = 2F, Cout = 1F; TJ = 0C to 125C, unless otherwise noted. Parameter Symbol Test Circuit 1 Conditions TJ = 25C Output Voltage Vo Vin = -14.5 to -27V, Io = 5mA to 1A Vin = -14.5 to -30V Vin = -15 to -19V Io = 5mA to 1.5A Io = 250mA to 750mA TJ = 25C Vin = -14.5 to -30V Io = 5mA to 1A f = 10Hz to 100KHz Vin = -15 to -25V Io = 100mA, f = 120Hz Io = 1.0A, TJ = 25C 1 1 TJ = 25C Io = 5mA, TJ = 0 to125C Min. -11.76 -11.64 -- -- -- -- -- -- -- -- 55 -- -- -- Typ. -12.0 -- 10 3 12 4 2.5 -- -- 75 70 1.1 2.1 -0.8 Max. -12.24 -12.36 240 120 240 120 5 1 0.5 -- -- -- -- -- V Unit Line Regulation (TJ = 25C) Load Regulation (TJ = 25C) Quiescent Current Quiescent Current Change (TJ = 25C) Output Noise Voltage (TJ = 25C) Ripple Rejection Ratio Dropout Voltage Peak Output Current Temp. Coefficient of Output Voltage REG line 1 mV REG load Iq Iq Vn RR Vdrop Io-peak Vo/TA 1 2 2 1 3 mV mA mA V dB V A mV/C www.vishay.com 4 Document Number 74814 11-Jun-02 MC79xxCT Series Vishay formerly General Semiconductor Electrical Characteristics - MC7915 Vin = -23V, Iout = 500mA, Cin = 2F, Cout = 1F; TJ = 0C to 125C, unless otherwise noted. Parameter Symbol Test Circuit 1 Conditions TJ = 25C Output Voltage Vo Vin = -17.5 to -30V, Io = 5mA to 1A Vin = -17.5 to -30V Vin = -18 to -22V Io = 5mA to 1.5A Io = 250mA to 750mA TJ = 25C Vin = -17.5 to -30V Io = 5mA to 1A f = 10Hz to 100KHz Vin = -18 to -28V Io = 100mA, f = 120Hz Io = 1.0A, TJ = 25C 1 1 TJ = 25C Io = 5mA, TJ = 0 to125C Min. -14.7 -14.55 -- -- -- -- -- -- -- -- 54 -- -- -- Typ. -15 -- 11 3 12 4 2.5 -- -- 90 69 1.1 2.1 0.9 Max. -15.3 -15.45 300 150 300 150 5 1 0.5 -- -- -- -- -- V Unit Line Regulation (TJ = 25C) Load Regulation (TJ = 25C) Quiescent Current Quiescent Current Change (TJ = 25C) Output Noise Voltage (TJ = 25C) Ripple Rejection Ratio Dropout Voltage Peak Output Current Temp. Coefficient of Output Voltage REG line 1 mV REG load Iq Iq Vn RR Vdrop Io-peak Vo/TA 1 2 2 1 3 mV mA mA V dB V A mV/C Electrical Characteristics - MC7918 Vin = -27V, Iout = 500mA, Cin = 2F, Cout = 1F; TJ = 0C to 125C, unless otherwise noted. Parameter Symbol Test Circuit 1 Conditions TJ = 25C Output Voltage Vo Vin = -21 to -33V, Io = 5mA to 1A Vin = -21 to -33V Vin = -22 to -26V Io = 5mA to 1.5A Io = 250mA to 750mA TJ = 25C Vin = -21 to -33V Io = 5mA to 1A f = 10Hz to 100KHz Vin = -21 to -31V Io = 100mA, f = 120Hz Io = 1.0A, TJ = 25C 1 1 TJ = 25C Io = 5mA, TJ = 0 to125C Min. -17.64 -17.46 -- -- -- -- -- -- -- -- 53 -- -- -- Typ. -18.0 -- 15 5 12 4 2.5 -- -- 110 68 1.1 2.1 -1 Max. -18.36 -18.54 360 180 360 180 5 1 0.5 -- -- -- -- -- V Unit Line Regulation (TJ = 25C) Load Regulation (TJ = 25C) Quiescent Current Quiescent Current Change (TJ = 25C) Output Noise Voltage (TJ = 25C) Ripple Rejection Ratio Dropout Voltage Peak Output Current Temp. Coefficient of Output Voltage REG line 1 mV REG load Iq Iq Vn RR Vdrop Io-peak Vo/TA 1 2 2 1 3 mV mA mA V dB V A mV/C Document Number 74814 11-Jun-02 www.vishay.com 5 MC79xxCT Series Vishay formerly General Semiconductor Electrical Characteristics - MC7924 Vin = -33V, Iout = 500mA, Cin = 2F, Cout = 1F; TJ = 0C to 125C, unless otherwise noted. Parameter Symbol Test Circuit 1 Conditions TJ = 25C Output Voltage Vo Vin = -26 to -38V, Io = 5mA to 1A Vin = -26 to -38V Vin = -27 to -32V Io = 5mA to 1.5A Io = 250mA to 750mA TJ = 25C Vin = -26 to -38V Io = 5mA to 1A f = 10Hz to 100KHz Vin = -26 to -36V Io = 100mA, f = 120Hz Io = 1.0A, TJ = 25C 1 1 TJ = 25C Io = 5mA, TJ = 0 to125C Min. -23.52 -23.28 -- -- -- -- -- -- -- -- 50 -- -- -- Typ. -24 -- 18 6 12 4 3 -- -- 170 65 1.1 2.1 -1 Max. -24.48 -24.72 480 240 480 240 5 1 0.5 -- -- -- -- -- V Unit Line Regulation (TJ = 25C) Load Regulation (TJ = 25C) Quiescent Current Quiescent Current Change (TJ = 25C) Output Noise Voltage (TJ = 25C) Ripple Rejection Ratio Dropout Voltage Peak Output Current Temp. Coefficient of Output Voltage REG line 1 mV REG load Iq Iq Vn RR Vdrop Io-peak Vo/TA 1 2 2 1 3 mV mA mA V dB V A mV/C Test Circuit 1 1 Test Circuit 2 1 A MC79xx 2 3 MC79xx 2 3 + 2F 1F V + Io + 2F 1F + Io Test Circuit 3 1 MC79xx 2 3 + 2F 1F + V Io www.vishay.com 6 Document Number 74814 11-Jun-02 MC79xxCT Series Vishay formerly General Semiconductor Ratings and Characteristic Curves (TA = 25C unless otherwise noted) Fig. 1 - Power Dissipation vs. Ambient Temperature 20 10 Infinite Heatsink Vin = -11V VO = -6.0V IO = 20mA Fig. 2 - Quiescent Current IIB -- Input Bias Current (mA) PO -- Power Dissipation (W) HS = 5C/W HS = 15C/W 2.0 1.0 No Heatsink JC = 5C/W JA = 65C/W PD(max) = 15W 1.9 0.1 25 1.8 50 75 100 125 150 0 25 50 75 100 125 TA -- Ambient Temperature (C) TJ -- Junction Temperature (C) Fig. 3 - Peak Output Current 2.5 100 Fig. 4 -Ripple Rejection Ratio vs. Frequency Vin = --11V Vo = --6.0V Io = 20mA 2.0 RR -- Ripple Rejection (db) 80 Io -- Output Current (A) 1.5 60 1.0 40 0.5 20 0 0 6.0 12 18 24 30 0 10 100 1.0K 10K 100K Input -- Output Voltage Differential (V) f -- Frequency (HZ) Fig. 5 - Ripple Rejection vs. Output Voltage 80 f = 120Hz Io = 20mA Vin = 1.0V(RMS) 70 6.26 Fig. 6 - Output Voltage vs. Junction Temperature RR -- Ripple Rejection (db) VO -- Output Voltage (-V) 6.22 6.18 60 6.14 Vin = --11V Vo = --6.0V Io = 20mA 50 6.10 40 4.0 8.0 12 16 20 24 6.06 --25 0 25 50 75 100 125 150 175 Vo -- Output Voltage (V) Document Number 74814 11-Jun-02 TJ -- Junction Temperature (C) www.vishay.com 7 MC79xxCT Series Vishay formerly General Semiconductor TO-220 Case Outline 4.85 0.375 1.27 0.12 10.25 0.25 3.84 0.6 Dia. 2.69 0.25 6.26 0.25 14.8 0.51 8.54 0.26 28.7 0.92 3.94 0.375 13.9 0.41 Dimensions in millimeters 2.53 0.185 1.3 0.185 0.8 0.12 0.387 0.09 2.55 0.375 www.vishay.com 8 Document Number 74814 11-Jun-02 |
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