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Document overview
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- PDF pages: 18
Technical content
Features
- 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
Ordering Information
Product Number Output Voltage Tolerance Package Packing Method Operating Temperature KA7905TU ±4% TO-220 (Dual Gauge) Rail 0 to +125 °C KA7906TU KA7908TU KA7909TU KA7912TU KA7915TU KA7918TU KA7924TU KA7912ATU ±2% KA7915ATU LM7905CT ±4% TO-220 (Single Gauge) LM7908CT LM7909CT LM7910CT LM7912CT LM7915CT LM7918CT
Description
The KA79XX / KA79XXA / LM79XX series of three-termi- nal negative regulators are available in a TO-220 pack- age 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 1. GND 2. Input 3. Output Input
Figure 1. Block Diagram A = 25°C unless otherwise noted.
- Thermal resistance test board, size: 76.2 mm x 114.3 mm x 1.6 mm(1S0P), JEDEC standard:
- Assume no ambient airflow.
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KA79XX / KA79XXA / LM79XX Rev. 1.1.0 3 (VI = -10 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Note: 3. Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Symbol Parameter Conditions Min. Typ. Max. Unit VO Output Voltage VIO = 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 mV VI = -8 V to -12 V 8 50 ΔVO Load Regulation(3) TJ = +25°C, IO = 5 mA to 1.5 A 10 100 mV TJ =+25°C, IO = 250 mA to 750 mA 3 50 IQ Quiescent Current T J =+25°C3 6 m A ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 mA VI = -8 V to -25 V 0.10 0.80 ΔVo/ΔT Temperature Coefficient of VD IO = 5 mA -0.4 mV/ °C VN Output Noise Voltage f = 10 Hz to 100 kHz, T A = +25°C4 0 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 54 60 dB VD Dropout Voltage T J =+25°C, IO = 1 A 2 V ISC Short-Circuit Current T J =+25°C, VI = -35 V 300 mA IPK Peak Current T J =+25°C2 . 2 A
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KA79XX / KA79XXA / LM79XX Rev. 1.1.0 4 (VI = -11 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Note: 4. Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Symbol Parameter Conditions Min. Typ. Max. Unit VO Output Voltage VIO = 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 mV VI = -9 V to -13 V 5 60 ΔVO Load Regulation(4) TJ = +25°C, IO = 5 mA to 1.5 A 10 120 mV TJ = +25°C, IO = 250 mA to 750 mA 3 60 IQ Quiescent Current T J = +25°C3 6 m A ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 mA VI = -8 V to -25 V 0.10 1.30 ΔVo/ΔT Temperature Coefficient of VD IO = 5 mA -0.5 mV/ °C VN Output Noise Voltage f = 10 Hz to 100 kHz, T A =+25°C1 3 0 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 54 60 dB VD Dropout Voltage T J = +25°C, IO = 1 A 2 V ISC Short-Circuit Current T J = +25°C, VI = -35 V 300 mA IPK Peak Current T J = +25°C2 . 2 A
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KA79XX / KA79XXA / LM79XX Rev. 1.1.0 5 (VI = -14 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF; unless otherwise specified.) Note: 5. Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Symbol Parameter Conditions Min. Typ. Max. Unit VO Output Voltage VIO = 5 mA to 1 A, PO ≤ 15 W, ΔVO Line Regulation(5) TJ = +25°C VI = -10.5 V to -25 V 10 160 mV VI = -11 V to -17 V 5 80 ΔVO Load Regulation(5) TJ = +25°C, IO = 5 mA to 1.5 A 12 160 mV TJ = +25°C, IO = 250 mA to 750 mA 4 80 IQ Quiescent Current T J = +25°C3 6 m A ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 mA VI = -10.5 V to -25 V 0.10 1.00 ΔVo/ΔT Temperature Coefficient of VD IO = 5 mA -0.6 mV/ °C VN Output Noise Voltage f = 10 Hz to 100 kHz, T A = +25°C1 7 5 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 54 60 dB VD Dropout Voltage T J =+25°C, IO = 1 A 2 V ISC Short-Circuit Current T J =+25°C, VI = -35 V 300 mA IPK Peak Current T J = +25°C2 . 2 A
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KA79XX / KA79XXA / LM79XX Rev. 1.1.0 6 (VI = -15 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF; unless otherwise specified.) Note: 6. Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Symbol Parameter Conditions Min. Typ. Max. Unit VO Output Voltage VIO = 5 mA to 1 A, PO ≤ 15 W, ΔVO Line Regulation(6) TJ =+25°C VI = -11.5 V to -26 V 10 180 mV VI = -12 V to -18 V 5 90 ΔVO Load Regulation(6) TJ =+25°C, IO = 5 mA to 1.5 A 12 180 mV TJ =+25°C, IO = 250 mA to 750 mA 4 90 IQ Quiescent Current T J = +25°C3 6 m A ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 mA VI = -11.5 V to -26 V 0.10 1.00 ΔVo/ΔT Temperature Coefficient of VD IO = 5 mA -0.6 mV/ °C VN Output Noise Voltage f = 10 Hz to 100 kHz, T A = +25°C1 7 5 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 54 60 dB VD Dropout Voltage T J = +25°C, IO = 1 A 2 V ISC Short-Circuit Current T J = +25°C, VI = -35 V 300 mA IPK Peak Current T J = +25°C2 . 2 A
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KA79XX / KA79XXA / LM79XX Rev. 1.1.0 7 (VI = -17 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF; unless otherwise specified.) Note: 7. Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Symbol Parameter Conditions Min. Typ. Max. Unit VO Output Voltage VIO = 5 mA to 1A, Pd ≤ 15 W, VI = -12 V to -28 V -9.5 -10.0 -10.5 ΔVO Line Regulation(7) TJ = +25°C VI = -12.5 V to -28 V 12 200 mV VI = -14 V to -20 V 6 100 ΔVO Load Regulation(7) TJ = +25°C, IO = 5 mA to 1.5 A 12 200 mV TJ = +25°C, IO = 250 mA to 750 mA 4 100 IQ Quiescent Current T J = +25°C3 6 m A ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 mA VI = -12.5 V to -28 V 0.10 1.00 ΔVo/ΔT Temperature Coefficient of VO IO = 5 mA -1 mV/ °C VN Output Noise Voltage 10 Hz ≤ f ≤ 100 kHz, TA =+25°C2 8 0 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 54 60 dB VD Dropout Voltage T J = +25°C, IO = 1 A 2 V ISC Short-Circuit Current T J = +25°C, VI = -35 V 300 mA IPK Peak Current T J = +25°C2 . 2 A
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KA79XX / KA79XXA / LM79XX Rev. 1.1.0 8 (VI = -19 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Note: 8. Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Symbol Parameter Conditions Min. Typ. Max. Unit VO Output Voltage VIO = 5 mA to 1 A, PO ≤ 15 W ΔVO Line Regulation(8) TJ = +25°C VI = -14.5 V to -30 V 12 240 mV VI = -16 V to -22 V 6 120 ΔVO Load Regulation(8) TJ = +25°C, IO = 5 mA to 1.5 A 12 240 mV TJ =+25°C, IO = 250 mA to 750 mA 4 120 IQ Quiescent Current T J =+25°C3 6 m A ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 mA VI = -14.5 V to -30 V 0.10 1.00 ΔVo/ΔT Temperature Coefficient of VD IO = 5 mA -0.8 mV/ °C VN Output Noise Voltage f = 10 Hz to 100 kHz, T A =+25°C2 0 0 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 54 60 dB VD Dropout Voltage T J = +25°C, IO = 1 A 2 V ISC Short-Circuit Current T J = +25°C, VI = -35 V 300 mA IPK Peak Current T J = +25°C2 . 2 A
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KA79XX / KA79XXA / LM79XX Rev. 1.1.0 9 (VI = -23 V, IO = 500 mA, 0°C ≤TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) Note: 9. Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately. Pulse testing with low duty is used. Symbol Parameter Conditions Min. Typ. Max. Unit VO Output Voltage VIO = 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 mV VI = -20 V to -26 V 6 150 ΔVO Load Regulation(9) TJ = +25°C, IO = 5 mA to 1.5 A 12 300 mV TJ =+25°C, IO = 250 mA to 750 mA 4 150 IQ Quiescent Current T J =+25°C3 6 m A ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 mA VI = -17.5 V to -30 V 0.10 1.00 ΔVo/ΔT Temperature Coefficient of VD IO = 5 mA -0.9 mV/ °C VN Output Noise Voltage f = 10 Hz to 100 kHz, T A = +25°C2 5 0 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 54 60 dB VD Dropout Voltage T J = +25°C, IO = 1 A 2 V ISC Short-Circuit Current T J = +25°C, VI = -35 V 300 mA IPK Peak Current T J = +25°C2 . 2 A
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KA79XX / KA79XXA / LM79XX Rev. 1.1.0 10 (VI = -27 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF, unless otherwise specified.) 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. Symbol Parameter Conditions Min. Typ. Max. Unit VO Output Voltage VIO = 5 mA to 1 A, PO ≤ 15 W ΔVO Line Regulation(10) TJ = +25°C VI = -21 V to -33 V 15 360 mV VI = -24 V to -30 V 8 180 ΔVO Load Regulation(10) TJ = +25°C, IO = 5 mA to 1.5 A 15 360 mV TJ = +25°C, IO = 250 mA to 750 mA 5 180 IQ Quiescent Current T J = +25°C3 6 m A ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 mA VI = -21 V to -33 V 0.10 1.00 ΔVo/ΔT Temperature Coefficient of VD IO = 5 mA -1 mV/ °C VN Output Noise Voltage f = 10 Hz to 100 kHz, T A = +25°C3 0 0 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 54 60 dB VD Dropout Voltage T J = +25°C, IO = 1 A 2 V ISC Short-Circuit Current T J = +25°C, VI = -35 V 300 mA IPK Peak Current T J =+25°C2 . 2 A
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KA79XX / KA79XXA / LM79XX Rev. 1.1.0 11 (VI = -33 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) 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. Symbol Parameter Conditions Min. Typ. Max. Unit VO Output Voltage VIO = 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 mV VI = -30 V to -36 V 8 180 ΔVO Load Regulation(11) TJ = +25°C, IO = 5 mA to 1.5 A 15 480 mV TJ = +25°C, IO = 250 mA to 750 mA 5 240 IQ Quiescent Current T J = +25°C3 6 m A ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 mA VI = -27 V to -38 V 0.10 1.00 ΔVo/ΔT Temperature Coefficient of VD IO = 5 mA -1 mV/ °C VN Output Noise Voltage f = 10 Hz to 100 kHz, T A =+25°C4 0 0 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 54 60 dB VD Dropout Voltage T J =+25°C, IO = 1 A 2 V ISC Short-Circuit Current T J =+25°C, VI = -35 V 300 mA IPK Peak Current T J =+25°C2 . 2 A
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KA79XX / KA79XXA / LM79XX Rev. 1.1.0 12 (VI = -19 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF; unless otherwise specified.) 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. Symbol Parameter Conditions Min. Typ. Max. Unit VO Output Voltage VIO = 5 mA to 1 A, PO ≤ 15 W, VI = -15.5 V to -27 V -11.50 -12.00 -12.50 ΔVO Line Regulation(12) TJ = +25°C VI = -14.5 V to -27 V, Io = 1 A 12 120 mV VI= -16 V to -22 V, Io = 1 A 66 0 VI = -14.8 V to -30 V 12 120 VI = -16 V to -22 V, Io = 1 A 12 120 ΔVO Load Regulation(12) TJ =+25°C, IO = 5 mA to 1.5 A 12 150 mV TJ =+25°C, IO = 250 mA to 750 mA 4 75 IQ Quiescent Current T J =+25°C3 6 m A ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 mA VI = -15 V to -30 V 0.10 1.00 ΔVo/ΔT Temperature Coefficient of VD IO = 5 mA -0.8 mV/ °C VN Output Noise Voltage f = 10 Hz to 100 kHz, T A =+25°C2 0 0 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 54 60 dB VD Dropout Voltage T J =+25°C, IO = 1 A 2 V ISC Short-Circuit Current T J =+25°C, VI = -35 V 300 mA IPK Peak Current T J =+25°C2 . 2 A
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator © 2002 Fairchild Semiconductor Corporation www.fairchildsemi.com KA79XX / KA79XXA / LM79XX Rev. 1.1.0 13 (VI = -23 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO = 1 μF; unless otherwise specified.) 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. Symbol Parameter Conditions Min. Typ. Max. Unit VO Output Voltage VIO = 5 mA to 1 A, PO ≤ 15 W, VI = -18 V to -30 V -14.4 -15.0 -15.6 ΔVO Line Regulation(13) TJ =+25°C VI = -17.5 V to -30 V, Io = 1 A 12 150 mV VI = -20 V to -26 V, Io = 1 A 67 5 VI = -17.9 V to -30 V 12 150 VI = -20 V to -26 V, Io = 1 A 6 150 ΔVO Load Regulation(13) TJ = +25°C, IO = 5 mA to 1.5 A 12 150 mV TJ = +25°C, IO = 250 mA to 750 mA 4 75 IQ Quiescent Current T J =+25°C3 6 m A ΔIQ Quiescent Current Change IO = 5 mA to 1 A 0.05 0.50 mA VI = -18.5 V to -30 V 0.10 1.00 ΔVo/ΔT Temperature Coefficient of VD IO = 5 mA -0.9 mV/ °C VN Output Noise Voltage f = 10 Hz to 100 kHz, T A =+25°C 250 μV RR Ripple Rejection f = 120 Hz, ΔVI = 10 V 54 60 dB VD Dropout Voltage T J = +25°C, IO = 1 A 2 V ISC Short-Circuit Current T J =+25°C, VI = -35 V 300 mA IPK Peak Current T J =+25°C2 . 2 A
Figure 9. TO-220, MOLDED, 3-LEAD, JEDEC VARIATION AB (ACTIVE) warranty therein, which covers Fairchild products. http://www.fairchildsemi.com/dwg/TO/TO220B03.pdf. http://www.fairchildsemi.com/packing_dwg/PKG-TO220B03_TC.pdf .
Figure 10. TO-220, MOLDED, 3LD, JEDEC VARIATION AB (ACTIVE) warranty therein, which covers Fairchild products. http://www.fairchildsemi.com/dwg/TO/TO220Y03.pdf. http://www.fairchildsemi.com/packing_dwg/PKG-TO220Y03.pdf.
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Obsolete Not In Production Datasheet contains specifications on a product that is discontinued by Fairchild Semiconductor. The datasheet is for reference information only. Rev. I65