KA79XX / KA79XXA / LM79XX 3-Terminal 1 A Negative Voltage Regulator Features Description • Output Current in Excess of 1 A • Output Voltages of: -5 V, -6 V, -8 V, -9 V, -12 V, -15 V, -18 V, -24 V • Internal Thermal Overload Protection • Short-Circuit Protection • Output Transistor Safe Operating Area Compensation The KA79XX / KA79XXA / LM79XX series of three-terminal negative regulators are available in a TO-220 package with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shutdown, and safe operating area protection. TO-220 Input 1 1. GND 2. Input 3. Output Ordering Information Product Number Output Voltage Tolerance Package Packing Method Operating Temperature Rail 0 to +125°C KA7905TU KA7906TU KA7908TU KA7909TU KA7912TU ±4% TO-220 (Dual Gauge) KA7915TU KA7918TU KA7924TU KA7912ATU KA7915ATU ±2% LM7905CT LM7908CT LM7909CT LM7910CT ±4% TO-220 (Single Gauge) LM7912CT LM7915CT LM7918CT © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 1 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator August 2013 GND R1 VOLTAGE REFERENCE R2 Out Output + Q1 Q2 I1 PROTECTION CIRCUITRY I2 Rsc In Input Figure 1. Block Diagram Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless otherwise noted. Symbol VI Parameter Value Input Voltage Unit -35 V RθJC Thermal Resistance, Junction-Case(1) 5 °C/W RθJA Thermal Resistance, Junction-Air(1, 2) 65 °C/W TOPR Operating Temperature Range 0 to +125 °C TSTG Storage Temperature Range - 65 to +150 °C Notes: 1. Thermal resistance test board, size: 76.2 mm x 114.3 mm x 1.6 mm(1S0P), JEDEC standard: JESD51-3, JESD51-7. 2. Assume no ambient airflow. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 2 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Block Diagram (VI = -10 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Symbol Parameter Conditions Min. Typ. Max. Unit TJ = +25°C -4.80 -5.00 -5.20 Output Voltage IO = 5 mA to 1 A, PO ≤ 15 W, VI = -7 V to -20 V -4.75 -5.00 -5.25 ΔVO Line Regulation(3) TJ = +25°C VI = -7 V to -25 V 35 100 VI = -8 V to -12 V 8 50 ΔVO Load Regulation(3) TJ = +25°C, IO = 5 mA to 1.5 A 10 100 TJ =+25°C, IO = 250 mA to 750 mA 3 50 IQ Quiescent Current TJ =+25°C 3 6 Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 VI = -8 V to -25 V 0.10 0.80 Temperature Coefficient of VD IO = 5 mA -0.4 mV/°C VN Output Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C 40 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 60 dB VO ΔIQ ΔVo/ΔT 54 V mV mV mA mA VD Dropout Voltage TJ =+25°C, IO = 1 A 2 V ISC Short-Circuit Current TJ =+25°C, VI = -35 V 300 mA IPK Peak Current TJ =+25°C 2.2 A Note: 3. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 3 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7905 / LM7905) (VI = -11 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Symbol Parameter Conditions Min. Typ. Max. Unit TJ =+25°C -5.75 -6.00 -6.25 Output Voltage IO = 5 mA to 1 A, PO ≤ 15 W, VI = -9 V to -21 V -5.70 -6.00 -6.30 ΔVO Line Regulation(4) TJ = +25°C VI = -8 V to -25 V 10 120 VI = -9 V to -13 V 5 60 ΔVO Load Regulation(4) TJ = +25°C, IO = 5 mA to 1.5 A 10 120 TJ = +25°C, IO = 250 mA to 750 mA 3 60 IQ Quiescent Current TJ = +25°C 3 6 Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 VI = -8 V to -25 V 0.10 1.30 Temperature Coefficient of VD IO = 5 mA -0.5 mV/°C VN Output Noise Voltage f = 10 Hz to 100 kHz, TA =+25°C 130 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 60 dB VO ΔIQ ΔVo/ΔT 54 V mV mV mA mA VD Dropout Voltage TJ = +25°C, IO = 1 A 2 V ISC Short-Circuit Current TJ = +25°C, VI = -35 V 300 mA IPK Peak Current TJ = +25°C 2.2 A Note: 4. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 4 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7906) (VI = -14 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF; unless otherwise specified.) Symbol Parameter Conditions Min. Typ. Max. Unit TJ =+25°C -7.7 -8.0 -8.3 Output Voltage IO = 5 mA to 1 A, PO ≤ 15 W, VI = -10 V to -23 V -7.6 -8.0 -8.4 ΔVO Line Regulation(5) TJ = +25°C VI = -10.5 V to -25 V 10 160 VI = -11 V to -17 V 5 80 ΔVO Load Regulation(5) TJ = +25°C, IO = 5 mA to 1.5 A 12 160 TJ = +25°C, IO = 250 mA to 750 mA 4 80 IQ Quiescent Current TJ = +25°C 3 6 Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 VI = -10.5 V to -25 V 0.10 1.00 Temperature Coefficient of VD IO = 5 mA -0.6 mV/°C VN Output Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C 175 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 60 dB VO ΔIQ ΔVo/ΔT 54 V mV mV mA mA VD Dropout Voltage TJ =+25°C, IO = 1 A 2 V ISC Short-Circuit Current TJ =+25°C, VI = -35 V 300 mA IPK Peak Current TJ = +25°C 2.2 A Note: 5. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 5 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7908 / LM7908) (VI = -15 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF; unless otherwise specified.) Symbol Parameter Conditions Min. Typ. Max. Unit TJ = +25°C -8.7 -9.0 -9.3 Output Voltage IO = 5 mA to 1 A, PO ≤ 15 W, VI = -1.5 V to -23 V -8.6 -9.0 -9.4 ΔVO Line Regulation(6) TJ =+25°C VI = -11.5 V to -26 V 10 180 VI = -12 V to -18 V 5 90 ΔVO Load Regulation(6) TJ =+25°C, IO = 5 mA to 1.5 A 12 180 TJ =+25°C, IO = 250 mA to 750 mA 4 90 IQ Quiescent Current TJ = +25°C 3 6 Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 VI = -11.5 V to -26 V 0.10 1.00 Temperature Coefficient of VD IO = 5 mA -0.6 mV/°C VN Output Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C 175 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 60 dB VO ΔIQ ΔVo/ΔT 54 V mV mV mA mA VD Dropout Voltage TJ = +25°C, IO = 1 A 2 V ISC Short-Circuit Current TJ = +25°C, VI = -35 V 300 mA IPK Peak Current TJ = +25°C 2.2 A Note: 6. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 6 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7909 / LM7909) (VI = -17 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF; unless otherwise specified.) Symbol VO ΔVO ΔVO Parameter Conditions Min. Typ. Max. TJ = +25°C -9.6 -10.0 -10.4 Output Voltage IO = 5 mA to 1A, Pd ≤ 15 W, VI = -12 V to -28 V -9.5 -10.0 -10.5 Line Regulation(7) TJ = +25°C VI = -12.5 V to -28 V 12 200 VI = -14 V to -20 V 6 100 TJ = +25°C, IO = 5 mA to 1.5 A 12 200 TJ = +25°C, IO = 250 mA to 750 mA 4 100 3 6 Load Regulation(7) Quiescent Current TJ = +25°C ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 VI = -12.5 V to -28 V 0.10 1.00 Temperature Coefficient of VO IO = 5 mA V mV mV IQ ΔVo/ΔT Unit mA mA -1 mV/°C 280 μV 60 dB 2 V VN Output Noise Voltage 10 Hz ≤ f ≤ 100 kHz, TA =+25°C RR Ripple Rejection f = 120 Hz, ΔVI = 10 V VD Dropout Voltage TJ = +25°C, IO = 1 A ISC Short-Circuit Current TJ = +25°C, VI = -35 V 300 mA IPK Peak Current TJ = +25°C 2.2 A 54 Note: 7. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 7 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (LM7910) (VI = -19 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Symbol Parameter Conditions Min. Typ. Max. Unit TJ = +25°C -11.5 -12.0 -12.5 Output Voltage IO = 5 mA to 1 A, PO ≤ 15 W VI = -15.5 V to -27 V -11.4 -12.0 -12.6 ΔVO Line Regulation(8) TJ = +25°C VI = -14.5 V to -30 V 12 240 VI = -16 V to -22 V 6 120 ΔVO Load Regulation(8) TJ = +25°C, IO = 5 mA to 1.5 A 12 240 TJ =+25°C, IO = 250 mA to 750 mA 4 120 IQ Quiescent Current TJ =+25°C 3 6 Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 VI = -14.5 V to -30 V 0.10 1.00 Temperature Coefficient of VD IO = 5 mA -0.8 mV/°C VN Output Noise Voltage f = 10 Hz to 100 kHz, TA =+25°C 200 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 60 dB VO ΔIQ ΔVo/ΔT 54 V mV mV mA mA VD Dropout Voltage TJ = +25°C, IO = 1 A 2 V ISC Short-Circuit Current TJ = +25°C, VI = -35 V 300 mA IPK Peak Current TJ = +25°C 2.2 A Note: 8. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 8 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7912 / LM7912) (VI = -23 V, IO = 500 mA, 0°C ≤TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Symbol Parameter Conditions Min. Typ. Max. Unit TJ = +25°C -14.40 -15.00 -15.60 Output Voltage IO = 5 mA to 1 A, PO ≤ 15 W VI = -18 V to -30 V -14.25 -15.00 -15.75 ΔVO Line Regulation(9) TJ = +25°C VI = -17.5 V to -30 V 12 300 VI = -20 V to -26 V 6 150 ΔVO Load Regulation(9) TJ = +25°C, IO = 5 mA to 1.5 A 12 300 TJ =+25°C, IO = 250 mA to 750 mA 4 150 IQ Quiescent Current TJ =+25°C 3 6 Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 VI = -17.5 V to -30 V 0.10 1.00 Temperature Coefficient of VD IO = 5 mA -0.9 mV/°C VN Output Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C 250 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 60 dB VO ΔIQ ΔVo/ΔT 54 V mV mV mA mA VD Dropout Voltage TJ = +25°C, IO = 1 A 2 V ISC Short-Circuit Current TJ = +25°C, VI = -35 V 300 mA IPK Peak Current TJ = +25°C 2.2 A Note: 9. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 9 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7915 / LM7915) (VI = -27 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF, unless otherwise specified.) Symbol Parameter Conditions Min. Typ. Max. TJ = +25°C -17.3 -18.0 -18.7 Output Voltage IO = 5 mA to 1 A, PO ≤ 15 W VI = -22.5 V to -33 V -17.1 -18.0 -18.9 ΔVO Line Regulation(10) TJ = +25°C VI = -21 V to -33 V 15 360 VI = -24 V to -30 V 8 180 ΔVO Load Regulation(10) TJ = +25°C, IO = 5 mA to 1.5 A 15 360 TJ = +25°C, IO = 250 mA to 750 mA 5 180 IQ Quiescent Current TJ = +25°C 3 6 Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 VI = -21 V to -33 V 0.10 1.00 VO ΔIQ Temperature Coefficient of VD IO = 5 mA VN Output Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C RR Ripple Rejection f = 120 Hz, ΔVI = 10 V ΔVo/ΔT 54 Unit V mV mV mA mA -1 mV/°C 300 μV 60 dB VD Dropout Voltage TJ = +25°C, IO = 1 A 2 V ISC Short-Circuit Current TJ = +25°C, VI = -35 V 300 mA IPK Peak Current TJ =+25°C 2.2 A Note: 10. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 10 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7918 / LM7918) (VI = -33 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Symbol Parameter Conditions Min. Typ. Max. TJ = +25°C -23.0 -24.0 -25.0 Output Voltage IO = 5 mA to 1 A, PO ≤ 15 W, VI = -27 V to -38 V -22.8 -24.0 -25.2 ΔVO Line Regulation(11) TJ =+25°C VI = -27 V to -38 V 15 480 VI = -30 V to -36 V 8 180 ΔVO Load Regulation(11) TJ = +25°C, IO = 5 mA to 1.5 A 15 480 TJ = +25°C, IO = 250 mA to 750 mA 5 240 IQ Quiescent Current TJ = +25°C 3 6 Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 VI = -27 V to -38 V 0.10 1.00 VO ΔIQ Temperature Coefficient of VD IO = 5 mA VN Output Noise Voltage f = 10 Hz to 100 kHz, TA =+25°C RR Ripple Rejection f = 120 Hz, ΔVI = 10 V ΔVo/ΔT 54 Unit V mV mV mA mA -1 mV/°C 400 μV 60 dB VD Dropout Voltage TJ =+25°C, IO = 1 A 2 V ISC Short-Circuit Current TJ =+25°C, VI = -35 V 300 mA IPK Peak Current TJ =+25°C 2.2 A Note: 11. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 11 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7924) (VI = -19 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF; unless otherwise specified.) Symbol VO Parameter Output Voltage Conditions Min. Typ. Max. TJ =+25°C -11.75 -12.00 -12.25 IO = 5 mA to 1 A, PO ≤ 15 W, VI = -15.5 V to -27 V -11.50 -12.00 -12.50 VI = -14.5 V to -27 V, Io = 1 A 12 120 VI= -16 V to -22 V, Io = 1 A 6 60 12 120 TJ = +25°C ΔVO Line Regulation(12) VI = -14.8 V to -30 V VI = -16 V to -22 V, Io = 1 A 12 120 TJ =+25°C, IO = 5 mA to 1.5 A 12 150 TJ =+25°C, IO = 250 mA to 750 mA 4 75 Unit V mV ΔVO Load Regulation(12) IQ Quiescent Current TJ =+25°C 3 6 Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 VI = -15 V to -30 V 0.10 1.00 Temperature Coefficient of VD IO = 5 mA -0.8 mV/°C Output Noise Voltage f = 10 Hz to 100 kHz, TA =+25°C 200 μV 60 dB 2 V ΔIQ ΔVo/ΔT VN mV mA mA RR Ripple Rejection f = 120 Hz, ΔVI = 10 V VD Dropout Voltage TJ =+25°C, IO = 1 A ISC Short-Circuit Current TJ =+25°C, VI = -35 V 300 mA IPK Peak Current TJ =+25°C 2.2 A 54 Note: 12. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 12 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7912A) (VI = -23 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Symbol VO Parameter Output Voltage Conditions Min. Typ. Max. TJ = +25°C -14.7 -15.0 -15.3 IO = 5 mA to 1 A, PO ≤ 15 W, VI = -18 V to -30 V -14.4 -15.0 -15.6 VI = -17.5 V to -30 V, Io = 1 A 12 150 VI = -20 V to -26 V, Io = 1 A 6 75 12 150 TJ =+25°C ΔVO Line Regulation(13) VI = -17.9 V to -30 V VI = -20 V to -26 V, Io = 1 A 6 150 TJ = +25°C, IO = 5 mA to 1.5 A 12 150 TJ = +25°C, IO = 250 mA to 750 mA 4 75 Unit V mV ΔVO Load Regulation(13) IQ Quiescent Current TJ =+25°C 3 6 Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 VI = -18.5 V to -30 V 0.10 1.00 Temperature Coefficient of VD IO = 5 mA -0.9 mV/°C VN Output Noise Voltage f = 10 Hz to 100 kHz, TA =+25°C 250 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 60 dB VD Dropout Voltage TJ = +25°C, IO = 1 A 2 V ISC Short-Circuit Current TJ =+25°C, VI = -35 V 300 mA IPK Peak Current TJ =+25°C 2.2 A ΔIQ ΔVo/ΔT 54 mV mA mA Note: 13. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 13 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Electrical Characteristics (KA7915A) 15 Vin=10V Io=40mA Ou 5.05 tp 5 ut Vo lta 4.95 ge [- 4.9 V] Load Regulation[mV] Output Voltage[-V] 5.1 Vin=25V Io=100mA 4.85 4.8 -40 -25 0 25 50 75 TA, Ambient Temperature 100 -3 -5 -40 [ oC] -25 0 25 50 75 100 125 TA, Ambient Temperature [ oC] Figure 2. Output Voltage Figure 3. Load Regulation 4 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 V l [V] Dropout Voltage [V] 3.5 D Quiescent Current [mA] Io=0.75A -1 25 125 Io=1.5A Lo 13 ad 11 Re 9 gul 7 ati 5 on 3 [m 1 V] 3 2.5 2 1.5 Io=1A 1 0.5 0 -40 -25 0 25 50 75 100 TA, Ambient Temperature [oC] 125 5 Figure 4. Quiescent Current -40 -25 0 25 50 75 100 125 TA, Ambient Temperature [oC] Figure 5. Dropout Voltage Short Circuit Current[A] 0.6 0.55 Sh 0.5 ort 0.45 Cir 0.4 cui 0.35 0.3 t 0.25 Cu 0.2 rre 0.15 nt 0.1 [A] 0.05 0 -0.05 -0.1 -40 -25 0 25 50 75 100 TA, Ambient Temperature [ oC] 125 Figure 6. Short-Circuit Current © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 14 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Typical Performance Characteristics + 2.2 μF + 1 μF Co CI 1 2 Input 3 KA79XX LM79XX Output Figure 7. Negative Fixed Output Regulator 1 +15 V KA7812 LM7812 + C1 3 Co + 2 0.33 μF +12 V 1 μF 1N4001 * GND + 2.2 μF C1 1 2 -15 V 1 μF + Co KA7912 LM7912 3 1N4001 * -12 V Figure 8. Split Power Supply (±12 V / 1 A) Notes: 14. To specify an output voltage, substitute voltage value for "XX". 15. CI is required if the regulator is located an appreciable distance from the power supply filter. For value given, capacitor must be solid tantalum. If aluminium electronics are used, at least ten times the value shown should be selected. 16. CO improves stability and transient response. If large capacitors are used, a high-current diode from input to output (1N4001 or similar) should be introduced to protect the device from momentary input short circuit. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 15 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Typical Applications KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Physical Dimensions TO-220 (SINGLE GAUGE) Figure 9. TO-220, MOLDED, 3-LEAD, JEDEC VARIATION AB (ACTIVE) Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/dwg/TO/TO220B03.pdf. For current tape and reel specifications, visit Fairchild Semiconductor’s online packaging area: http://www.fairchildsemi.com/packing_dwg/PKG-TO220B03_TC.pdf. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 16 KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator Physical Dimensions (Continued) TO-220 (DUAL GAUGE) Figure 10. TO-220, MOLDED, 3LD, JEDEC VARIATION AB (ACTIVE) Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/dwg/TO/TO220Y03.pdf. For current tape and reel specifications, visit Fairchild Semiconductor’s online packaging area: http://www.fairchildsemi.com/packing_dwg/PKG-TO220Y03.pdf. © 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.0 www.fairchildsemi.com 17 TRADEMARKS The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not intended to be an exhaustive list of all such trademarks. 2Cool¥ AccuPower¥ AX-CAP®* BitSiC¥ Build it Now¥ CorePLUS¥ CorePOWER¥ CROSSVOLT¥ CTL¥ Current Transfer Logic¥ DEUXPEED® Dual Cool™ EcoSPARK® EfficientMax¥ ESBC¥ FPS¥ F-PFS¥ FRFET® SM Global Power Resource GreenBridge¥ Green FPS¥ Green FPS¥ e-Series¥ Gmax¥ GTO¥ IntelliMAX¥ ISOPLANAR¥ Making Small Speakers Sound Louder and Better™ MegaBuck¥ MICROCOUPLER¥ MicroFET¥ MicroPak¥ MicroPak2¥ MillerDrive¥ MotionMax¥ mWSaver® OptoHiT¥ OPTOLOGIC® OPTOPLANAR® ® Fairchild® Fairchild Semiconductor® FACT Quiet Series¥ ® FACT FAST® FastvCore¥ FETBench¥ Sync-Lock™ ® PowerTrench® PowerXS™ Programmable Active Droop¥ QFET® QS¥ Quiet Series¥ RapidConfigure¥ ¥ Saving our world, 1mW/W/kW at a time™ SignalWise¥ SmartMax¥ SMART START¥ Solutions for Your Success¥ SPM® STEALTH¥ SuperFET® SuperSOT¥-3 SuperSOT¥-6 SuperSOT¥-8 SupreMOS® SyncFET¥ ®* TinyBoost® ® TinyBuck TinyCalc¥ TinyLogic® TINYOPTO¥ TinyPower¥ TinyPWM¥ TinyWire¥ TranSiC¥ TriFault Detect¥ TRUECURRENT®* PSerDes¥ ® UHC Ultra FRFET¥ UniFET¥ VCX¥ VisualMax¥ VoltagePlus¥ XS™ * Trademarks of System General Corporation, used under license by Fairchild Semiconductor. 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