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KA78XX/KA78XXA 3-Terminal 1A Positive Voltage Regulator www.fairchildsemi.com Features • Output Current up to 1A • Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V • Thermal Overload Protection • Short Circuit Protection • Output Transistor Safe Operating Area Protection Description The KA78XX/KA78XXA series of three-terminal positive regulator are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents. TO-220 1 D-PAK 1 1. Input 2. GND 3. Output Internal Block Digram ©2001 Fairchild Semiconductor Corporation Rev. 1.0.0

KA78XX/KA78XXA Absolute Maximum Ratings Parameter Input Voltage (for VO = 5V to 18V) (for VO = 24V) Thermal Resistance Junction-Cases (TO-220) Thermal Resistance Junction-Air (TO-220) Operating Temperature Range (KA78XX/A/R) Storage Temperature Range Symbol VI VI RθJC RθJA TOPR TSTG Value 35 40 5 65 0 ~ +125 -65 ~ +150 Unit V V °C/W °C/W °C °C Electrical Characteristics (KA7805/KA7805R) (Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =10V, CI= 0.33µF, CO=0.1µF, unless otherwise specified) Parameter Symbol Conditions Output Voltage VO TJ =+25 oC 5.0mA ≤ Io ≤ 1.0A, PO ≤ 15W VI = 7V to 20V Line Regulation (Note1) Regline TJ=+25 oC VO = 7V to 25V VI = 8V to 12V IO = 5.0mA to1.5A IO =250mA to 750mA Load Regulation (Note1) Regload Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current IQ ∆IQ ∆VO/∆T VN RR VDrop rO ISC IPK TJ=+25 oC TJ =+25 oC IO = 5mA to 1.0A VI= 7V to 25V IO= 5mA f = 10Hz to 100KHz, TA=+25 oC f = 120Hz VO = 8V to 18V IO = 1A, TJ =+25 oC f = 1KHz VI = 35V, TA =+25 oC TJ =+25 oC KA7805 Min. Typ. Max. 4.8 5.2 5.0 4.75 - - - - - - - - - 62 - - - - 5.0 4.0 1.6 9 4 5.0 0.03 0.3 -0.8 42 73 2 15 230 2.2 5.25 100 50 100 50 8.0 0.5 1.3 - - - - - - - Unit V mV mV mA mA mV/ oC µV/VO dB V mΩ mA A Note: 1. 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. 2

Electrical Characteristics (KA7806/KA7806R) (Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =11V, CI= 0.33µF, CO=0.1µF, unless otherwise specified) KA78XX/KA78XXA Parameter Symbol Conditions Output Voltage VO Line Regulation (Note1) Regline Load Regulation (Note1) Regload Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current IQ ∆IQ ∆VO/∆T VN RR VDrop rO ISC IPK TJ =+25 oC 5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W VI = 8.0V to 21V TJ =+25 oC VI = 8V to 25V VI = 9V to 13V IO =5mA to 1.5A IO =250mA to750mA TJ =+25 oC TJ =+25 oC IO = 5mA to 1A VI = 8V to 25V IO = 5mA f = 10Hz to 100KHz, TA =+25 oC f = 120Hz VI = 9V to 19V IO = 1A, TJ =+25 oC f = 1KHz VI= 35V, TA=+25 oC TJ =+25 oC KA7806 Min. Typ. Max. 6.25 5.75 6.0 Unit 5.7 - - - - - - - - - 59 - - - - 6.0 5 1.5 9 3 5.0 - - -0.8 45 75 2 19 250 2.2 6.3 120 60 120 60 8.0 0.5 1.3 - - - - - - - V mV mV mA mA mV/ oC µV/Vo dB V mΩ mA A Note: 1. 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. 3

KA78XX/KA78XXA Electrical Characteristics (KA7808/KA7808R) (Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =14V, CI= 0.33µF, CO=0.1µF, unless otherwise specified) Parameter Symbol Conditions KA7808 Min. Typ. Max. 8.3 7.7 8.0 7.6 - - - - - - - - - 56 - - - - 8.0 5.0 2.0 10 5.0 5.0 0.05 0.5 -0.8 52 73 2 17 230 2.2 8.4 160 80 160 80 8.0 0.5 1.0 - - - - - - - Unit V mV mV mA mA mV/ oC µV/Vo dB V mΩ mA A Output Voltage VO Line Regulation (Note1) Regline TJ =+25 oC 5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W VI = 10.5V to 23V TJ =+25 oC VI = 10.5V to 25V VI = 11.5V to 17V IO = 5.0mA to 1.5A IO= 250mA to 750mA Load Regulation (Note1) Regload TJ =+25 oC Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current IQ ∆IQ ∆VO/∆T VN RR VDrop rO ISC IPK TJ =+25 oC IO = 5mA to 1.0A VI = 10.5A to 25V IO = 5mA f = 10Hz to 100KHz, TA =+25 oC f = 120Hz, VI= 11.5V to 21.5V IO = 1A, TJ=+25 oC f = 1KHz VI= 35V, TA =+25 oC TJ =+25 oC Note: 1. 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. 4

Electrical Characteristics (KA7809/KA7809R) (Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =15V, CI= 0.33µF, CO=0.1µF, unless otherwise specified) KA78XX/KA78XXA Parameter Symbol Conditions Output Voltage VO Line Regulation (Note1) Regline TJ =+25 oC 5.0mA≤ IO ≤1.0A, PO ≤15W VI= 11.5V to 24V TJ=+25 oC VI = 11.5V to 25V VI = 12V to 17V IO = 5mA to 1.5A IO = 250mA to 750mA Load Regulation (Note1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current ∆VO/∆T Regload TJ=+25 oC TJ=+25 oC IO = 5mA to 1.0A VI = 11.5V to 26V IO = 5mA f = 10Hz to 100KHz, TA =+25 oC f = 120Hz VI = 13V to 23V IO = 1A, TJ=+25 oC f = 1KHz VI= 35V, TA =+25 oC TJ= +25 oC rO ISC IPK VN RR IQ ∆IQ VDrop KA7809 Min. Typ. Max. 9.35 8.65 9 8.6 - - - - - - - - - 56 - - - - 9 6 2 12 4 5.0 - - -1 58 71 2 17 250 2.2 9.4 180 90 180 90 8.0 0.5 1.3 - - - - - - - Unit V mV mV mA mA mV/ oC µV/Vo dB V mΩ mA A Note: 1. 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. 5

KA78XX/KA78XXA Electrical Characteristics (KA7810) (Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =16V, CI= 0.33µF, CO=0.1µF, unless otherwise specified) Parameter Symbol Conditions Output Voltage VO Line Regulation (Note1) Regline TJ =+25 oC 5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W VI = 12.5V to 25V TJ =+25 oC VI = 12.5V to 25V VI = 13V to 25V IO = 5mA to 1.5A IO = 250mA to 750mA Load Regulation (Note1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current ∆VO/∆T Regload TJ =+25 oC TJ =+25 oC IO = 5mA to 1.0A VI = 12.5V to 29V IO = 5mA f = 10Hz to 100KHz, TA =+25 oC f = 120Hz VI = 13V to 23V IO = 1A, TJ=+25 oC f = 1KHz VI = 35V, TA=+25 oC TJ =+25 oC rO ISC IPK VN RR IQ ∆IQ VDrop KA7810 Min. Typ. Max. 10.4 9.6 10 9.5 - - - - - - - - - 56 - - - - 10 10 3 12 4 5.1 - - -1 58 71 2 17 250 2.2 10.5 200 100 200 400 8.0 0.5 1.0 - - - - - - - Unit V mV mV mA mA mV/ oC µV/Vo dB V mΩ mA A Note: 1. 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. 6

KA78XX/KA78XXA Electrical Characteristics (KA7812/KA7812R) (Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =19V, CI= 0.33µF, CO=0.1µF, unless otherwise specified) Parameter Symbol Conditions Output Voltage VO TJ =+25 oC 5.0mA ≤ IO≤1.0A, PO≤15W VI = 14.5V to 27V Line Regulation (Note1) Regline TJ =+25 oC VI = 14.5V to 30V VI = 16V to 22V IO = 5mA to 1.5A IO = 250mA to 750mA Load Regulation (Note1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current IQ Regload TJ =+25 oC TJ =+25 oC IO = 5mA to 1.0A VI = 14.5V to 30V ∆IQ ∆VO/∆T IO = 5mA VN RR VDrop rO ISC IPK f = 10Hz to 100KHz, TA =+25 oC f = 120Hz VI = 15V to 25V IO = 1A, TJ=+25 oC f = 1KHz VI = 35V, TA=+25 oC TJ = +25 oC KA7812/KA7812R Min. Typ. Max. 12.5 11.5 12 11.4 - - - - - - - - - 55 - - - - 12 10 3.0 11 5.0 5.1 0.1 0.5 -1 76 71 2 18 230 2.2 12.6 240 120 240 120 8.0 0.5 1.0 - - - - - - - Unit V mV mV mA mA mV/ oC µV/Vo dB V mΩ mA A Note: 1. 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. 7

Electrical Characteristics (KA7815) (Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =23V, CI= 0.33µF, CO=0.1µF, unless otherwise specified) KA78XX/KA78XXA Parameter Symbol Conditions Output Voltage VO Line Regulation (Note1) Regline Load Regulation (Note1) Regload Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current IQ ∆IQ ∆VO/∆T VN RR VDrop rO ISC IPK VI = 17.5V to 30V VI = 20V to 26V IO = 5mA to 1.5A IO = 250mA to 750mA TJ =+25 oC 5.0mA ≤ IO≤1.0A, PO≤15W VI = 17.5V to 30V TJ =+25 oC TJ =+25 oC TJ =+25 oC IO = 5mA to 1.0A VI = 17.5V to 30V IO = 5mA f = 10Hz to 100KHz, TA =+25 oC f = 120Hz VI = 18.5V to 28.5V IO = 1A, TJ=+25 oC f = 1KHz VI = 35V, TA=+25 oC TJ =+25 oC KA7815 Min. Typ. Max. 15.6 14.4 15 Unit 14.25 - - - - - - - - - 54 - - - - 15 11 3 12 4 5.2 - - -1 90 70 2 19 250 2.2 V mV mA mV 15.75 300 150 300 150 8.0 0.5 1.0 - mV/ oC µV/Vo - mA - - - - - dB V mΩ mA A Note: 1. 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. 8

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