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KA78XX/KA78XXA
3-Terminal 1A Positive Voltage Regulator
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
Rev. 1.0.0
(c)2001 Fairchild Semiconductor Corporation
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 RJC RJA 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 ,0C < TJ < 125C, IO = 500mA, VI =10V, CI= 0.33F, CO=0.1F, unless otherwise specified) Parameter Symbol TJ =+25 oC Output Voltage VO 5.0mA Io 1.0A, PO 15W VI = 7V to 20V TJ=+25 oC 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 TJ =+25 C
o oC
Conditions
KA7805 Min. 4.8 4.75 62 Typ. Max. 5.0 5.0 4.0 1.6 9 4 5.0 0.03 0.3 -0.8 42 73 2 15 230 2.2 5.2 5.25 100 50 100 50 8.0 0.5 1.3 -
Unit
V mV mV mA mA mV/ oC V/VO dB V m mA A
Line Regulation (Note1) 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
Regline Regload IQ IQ VO/T VN RR VDrop rO ISC IPK
VO = 7V to 25V VI = 8V to 12V IO = 5.0mA to1.5A IO =250mA to 750mA
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
KA78XX/KA78XXA
Electrical Characteristics (KA7806/KA7806R)
(Refer to test circuit ,0C < TJ < 125C, IO = 500mA, VI =11V, CI= 0.33F, CO=0.1F, unless otherwise specified) Parameter Symbol TJ =+25 oC Output Voltage VO 5.0mA IO 1.0A, PO 15W VI = 8.0V to 21V TJ =+25 oC 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 C
o
Conditions
KA7806 Min. Typ. Max. 5.75 5.7 59 6.0 6.0 5 1.5 9 3 5.0 -0.8 45 75 2 19 250 2.2 6.25 6.3 120 60 120 60 8.0 0.5 1.3 -
Unit
V mV mV mA mA mV/ o C V/Vo dB V m mA A
Line Regulation (Note1) 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
Regline Regload IQ IQ VO/T VN RR VDrop rO ISC IPK
VI = 8V to 25V VI = 9V to 13V IO =5mA to 1.5A IO =250mA to750mA
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 ,0C < TJ < 125C, IO = 500mA, VI =14V, CI= 0.33F, CO=0.1F, unless otherwise specified) Parameter Symbol TJ =+25 oC Output Voltage VO 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 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 Regload IQ IQ VO/T VN RR VDrop rO ISC IPK TJ =+25 oC TJ =+25 oC IO = 5mA to 1.0A VI = 10.5A to 25V IO = 5mA f = 10Hz to 100KHz, TA =+25 C f = 120Hz, VI= 11.5V to 21.5V IO = 1A, TJ=+25 C f = 1KHz VI= 35V, TA TJ =+25 oC =+25 oC
o o
Conditions
KA7808 Min. 7.7 7.6 56 Typ. 8.0 8.0 5.0 2.0 10 5.0 5.0 0.05 0.5 -0.8 52 73 2 17 230 2.2 Max. 8.3 8.4 160 80 160 80 8.0 0.5 1.0 -
Unit
V mV
Line Regulation (Note1)
Regline
IO= 250mA to 750mA
mV mA mA mV/ oC V/Vo dB V m 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.
4
KA78XX/KA78XXA
Electrical Characteristics (KA7809/KA7809R)
(Refer to test circuit ,0C < TJ < 125C, IO = 500mA, VI =15V, CI= 0.33F, CO=0.1F, unless otherwise specified) Parameter Symbol TJ =+25 oC Output Voltage VO 5.0mA IO 1.0A, PO 15W VI= 11.5V to 24V TJ=+25 oC 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 TJ= +25 oC =+25 oC VI = 11.5V to 25V VI = 12V to 17V IO = 5mA to 1.5A IO = 250mA to 750mA Conditions KA7809 Min. 8.65 8.6 56 Typ. 9 9 6 2 12 4 5.0 -1 58 71 2 17 250 2.2 Max. 9.35 9.4 180 90 180 90 8.0 0.5 1.3 V mV mV mA mA mV/ oC V/Vo dB V m mA A Unit
Line Regulation (Note1) 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
Regline Regload IQ IQ VO/T VN RR VDrop rO ISC IPK
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 ,0C < TJ < 125C, IO = 500mA, VI =16V, CI= 0.33F, CO=0.1F, unless otherwise specified) Parameter Symbol TJ =+25 oC Output Voltage VO 5.0mA IO 1.0A, PO 15W VI = 12.5V to 25V TJ =+25 oC 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 TJ =+25 oC =+25 oC VI = 12.5V to 25V VI = 13V to 25V IO = 5mA to 1.5A IO = 250mA to 750mA Conditions KA7810 Min. 9.6 9.5 56 Typ. Max. 10 10 10 3 12 4 5.1 -1 58 71 2 17 250 2.2 10.4 10.5 200 100 200 400 8.0 0.5 1.0 V mV mV mA mA mV/ oC V/Vo dB V m mA A Unit
Line Regulation (Note1) 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
Regline Regload IQ IQ VO/T VN RR VDrop rO ISC IPK
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 ,0C < TJ < 125C, IO = 500mA, VI =19V, CI= 0.33F, CO=0.1F, unless otherwise specified) Parameter Symbol TJ =+25 oC Output Voltage VO 5.0mA IO1.0A, PO15W VI = 14.5V to 27V TJ =+25 oC VI = 14.5V to 30V VI = 16V to 22V IO = 5mA to 1.5A IO = 250mA to 750mA Conditions KA7812/KA7812R Min. Typ. 11.5 11.4 55 =+25 oC 12 12 10 3.0 11 5.0 5.1 0.1 0.5 -1 76 71 2 18 230 2.2 Max. 12.5 12.6 240 120 240 120 8.0 0.5 1.0 V mV mV mA mA mV/ oC V/Vo dB V m mA A Unit
Line Regulation (Note1) 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
Regline
Regload TJ =+25 oC IQ IQ VO/T VN RR VDrop rO ISC IPK TJ =+25 oC IO = 5mA to 1.0A VI = 14.5V to 30V IO = 5mA
f = 10Hz to 100KHz, TA =+25 oC f = 120Hz VI = 15V to 25V IO = 1A, TJ=+25 oC f = 1KHz VI = 35V, TA 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.
7
KA78XX/KA78XXA
Electrical Characteristics (KA7815)
(Refer to test circuit ,0C < TJ < 125C, IO = 500mA, VI =23V, CI= 0.33F, CO=0.1F, unless otherwise specified) Parameter Symbol TJ =+25 oC Output Voltage VO 5.0mA IO1.0A, PO15W 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 TJ =+25 oC =+25 oC VI = 17.5V to 30V VI = 20V to 26V IO = 5mA to 1.5A IO = 250mA to 750mA Conditions KA7815 Min. 14.4 14.25 54 Typ. Max. 15 15 11 3 12 4 5.2 -1 90 70 2 19 250 2.2 15.6 15.75 300 150 300 150 8.0 0.5 1.0 V mV mV mA mA mV/ oC V/Vo dB V m mA A Unit
Line Regulation (Note1) 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
Regline Regload IQ IQ VO/T VN RR VDrop rO ISC IPK
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
KA78XX/KA78XXA
Electrical Characteristics (KA7818)
(Refer to test circuit ,0C < TJ < 125C, IO = 500mA, VI =27V, CI= 0.33F, CO=0.1F, unless otherwise specified) Parameter Symbol TJ =+25 oC Output Voltage VO 5.0mA IO 1.0A, PO 15W VI = 21V to 33V TJ =+25 oC TJ =+25 oC TJ =+25 oC IO = 5mA to 1.0A VI = 21V to 33V IO = 5mA f = 10Hz to 100KHz, TA =+25 oC f = 120Hz VI = 22V to 32V IO = 1A, TJ=+25 oC f = 1KHz VI = 35V, TA TJ =+25 oC =+25 oC VI = 21V to 33V VI = 24V to 30V IO = 5mA to 1.5A IO = 250mA to 750mA Conditions KA7818 Min. 17.3 17.1 53 Typ. Max. 18 18 15 5 15 5.0 5.2 -1 110 69 2 22 250 2.2 18.7 18.9 360 180 360 180 8.0 0.5 1 V mV mV mA mA mV/ oC V/Vo dB V m mA A Unit
Line Regulation (Note1) 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
Regline Regload IQ IQ VO/T VN RR VDrop rO ISC IPK
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.
9
KA78XX/KA78XXA
Electrical Characteristics (KA7824)
(Refer to test circuit ,0C < TJ < 125C, IO = 500mA, VI =33V, CI= 0.33F, CO=0.1F, unless otherwise specified) Parameter Symbol TJ =+25 oC Output Voltage VO 5.0mA IO 1.0A, PO 15W VI = 27V to 38V TJ =+25 oC VI = 27V to 38V VI = 30V to 36V IO = 5mA to 1.5A IO = 250mA to 750mA Conditions KA7824 Min. 23 22.8 50 Typ. 24 24 17 6 15 5.0 5.2 0.1 0.5 -1.5 60 67 2 28 230 2.2 Max. 25 25.25 480 240 480 240 8.0 0.5 1 V mV mV mA mA mV/ o C V/Vo dB V m mA A Unit
Line Regulation (Note1) 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
Regline
Regload TJ =+25 oC IQ IQ TJ =+25 oC IO = 5mA to 1.0A VI = 27V to 38V
VO/T IO = 5mA VN RR VDrop rO ISC IPK f = 10Hz to 100KHz, TA =+25 oC f = 120Hz VI = 28V to 38V IO = 1A, TJ=+25 oC f = 1KHz VI = 35V, TA=+25 oC TJ =+25 C
o
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.
10
KA78XX/KA78XXA
Electrical Characteristics (KA7805A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 10V, C I=0.33F, C O=0.1F, unless otherwise specified) Parameter Output Voltage Symbol TJ =+25 VO Conditions
oC
Min. 4.9 4.8 -
Typ. 5 5 5 3 5 1.5 9 9 4 5.0 -0.8 10 68 2 17 250 2.2
Max. 5.1 5.2 50 50 50 25 100 100 50 6.0 0.5 0.8 0.8 -
Unit V
IO = 5mA to 1A, PO 15W VI = 7.5V to 20V VI = 7.5V to 25V IO = 500mA
Line Regulation (Note1)
Regline
VI = 8V to 12V TJ =+25 oC
oC
mV
VI= 7.3V to 20V VI= 8V to 12V
-
Load Regulation (Note1)
Regload
TJ =+25 IO = 5mA to 1.5A IO = 5mA to 1A IO = 250mA to 750mA TJ =+25 oC IO = 5mA to 1A VI = 8 V to 25V, IO = 500mA VI = 7.5V to 20V, TJ =+25
oC
mV
Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current
IQ IQ V/T VN RR VDrop rO ISC IPK
mA mA mV/ oC V/Vo dB V m mA A
Io = 5mA f = 10Hz to 100KHz TA =+25 oC f = 120Hz, IO = 500mA VI = 8V to 18V IO = 1A, TJ =+25 oC f = 1KHz VI= 35V, TA =+25 oC TJ= +25 C
o
Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.
11
KA78XX/KA78XXA
Electrical Characteristics (KA7806A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 11V, C I=0.33F, C O=0.1F, unless otherwise specified) Parameter Output Voltage Symbol TJ =+25 VO Conditions
oC
Min. 5.58 5.76 -
Typ. 6 6 5 3 5 1.5 9 4 5.0 4.3 -0.8 10 65 2 17 250 2.2
Max. 6.12 6.24 60 60 60 30 100 100 50 6.0 0.5 0.8 0.8 -
Unit V
IO = 5mA to 1A, PO 15W VI = 8.6V to 21V VI= 8.6V to 25V IO = 500mA
Line Regulation (Note1)
Regline
VI= 9V to 13V TJ =+25 oC
oC
mV
VI= 8.3V to 21V VI= 9V to 13V
-
Load Regulation (Note1)
Regload
TJ =+25 IO = 5mA to 1.5A IO = 5mA to 1A IO = 250mA to 750mA TJ =+25 oC IO = 5mA to 1A VI = 9V to 25V, IO = 500mA VI= 8.5V to 21V, TJ =+25 oC IO = 5mA f = 10Hz to 100KHz TA =+25 oC f = 120Hz, IO = 500mA VI = 9V to 19V IO = 1A, TJ =+25 oC f = 1KHz VI= 35V, TA =+25 oC TJ=+25 C
o
mV
Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current
IQ IQ V/T VN RR VDrop rO ISC IPK
mA mA mV/ oC V/Vo dB V m mA A
Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.
12
KA78XX/KA78XXA
Electrical Characteristics (KA7808A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 14V, C I=0.33F, C O=0.1F, unless otherwise specified) Parameter Output Voltage Symbol TJ VO Conditions =+25 oC IO = 5mA to 1A, PO 15W VI = 10.6V to 23V VI= 10.6V to 25V IO = 500mA Line Regulation (Note1) Regline VI= 11V to 17V TJ =+25 oC =+25 oC VI= 10.4V to 23V VI= 11V to 17V Min. 7.84 7.7 oC
Typ. 8 8 6 3 6 2 12 12 5 5.0 -0.8 10 62 2 18 250 2.2
Max. 8.16 8.3 80 80 80 40 100 100 50 6.0 0.5 0.8 0.8 -
Unit V
mV
Load Regulation (Note1)
Regload
TJ IO = 5mA to 1.5A IO = 5mA to 1A IO = 250mA to 750mA TJ =+25 oC IO = 5mA to 1A VI = 11V to 25V, IO = 500mA VI= 10.6V to 23V, TJ =+25 IO = 5mA f = 10Hz to 100KHz TA =+25 oC f = 120Hz, IO = 500mA VI = 11.5V to 21.5V IO = 1A, TJ =+25 oC f = 1KHz VI= 35V, TA =+25 oC TJ=+25 C
o
mV
Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current
IQ IQ V/T VN RR VDrop rO ISC IPK
mA mA mV/ oC V/Vo dB V m mA A
Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.
13
KA78XX/KA78XXA
Electrical Characteristics (KA7809A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 15V, C I=0.33F, C O=0.1F, unless otherwise specified) Parameter Output Voltage Symbol TJ VO =+25C Conditions IO = 5mA to 1A, PO15W VI = 11.2V to 24V VI= 11.7V to 25V IO = 500mA Line Regulation (Note1) Regline VI= 12.5V to 19V TJ =+25C =+25C VI= 11.5V to 24V VI= 12.5V to 19V Min. 8.82 8.65
Typ. 9.0 9.0 6 4 6 2 12 12 5 5.0 -1.0 10 62 2.0 17 250 2.2
Max. 9.18 9.35 90 45 90 45 100 100 50 6.0 0.8 0.8 0.5 -
Unit V
mV
Load Regulation (Note1)
Regload
TJ IO = 5mA to 1.0A IO = 5mA to 1.0A IO = 250mA to 750mA TJ =+25 C VI = 11.7V to 25V, TJ=+25 C VI = 12V to 25V, IO = 500mA IO = 5mA to 1.0A IO = 5mA f = 10Hz to 100KHz TA =+25 C f = 120Hz, IO = 500mA VI = 12V to 22V IO = 1A, TJ =+25 C f = 1KHz VI= 35V, TA =+25 C TJ=+25 C
mV
Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current
IQ IQ V/T VN RR VDrop rO ISC IPK
mA mA mV/ C V/Vo dB V m mA A
-
Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.
14
KA78XX/KA78XXA
Electrical Characteristics (KA7810A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 16V, C I=0.33F, C O=0.1F, unless otherwise specified) Parameter Output Voltage Symbol TJ VO =+25C Conditions IO = 5mA to 1A, PO 15W VI =12.8V to 25V VI= 12.8V to 26V IO = 500mA Line Regulation (Note1) Regline VI= 13V to 20V TJ =+25 C =+25 C VI= 12.5V to 25V VI= 13V to 20V Min. 9.8 9.6
Typ. 10 10 8 4 8 3 12 12 5 5.0 -1.0 10 62 2.0 17 250 2.2
Max. 10.2 10.4 100 50 100 50 100 100 50 6.0 0.5 0.8 0.5 -
Unit V
mV
Load Regulation (Note1)
Regload
TJ IO = 5mA to 1.5A IO = 5mA to 1.0A IO = 250mA to 750mA TJ =+25 C VI = 13V to 26V, TJ=+25 C VI = 12.8V to 25V, IO = 500mA IO = 5mA to 1.0A IO = 5mA f = 10Hz to 100KHz TA =+25 C f = 120Hz, IO = 500mA VI = 14V to 24V IO = 1A, TJ =+25C f = 1KHz VI= 35V, TA =+25 C TJ=+25 C
mV
Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current
IQ IQ V/T VN RR VDrop rO ISC IPK
mA mA mV/ C V/Vo dB V m mA A
-
Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.
15
KA78XX/KA78XXA
Electrical Characteristics (KA7812A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 19V, C I=0.33F, C O=0.1F, unless otherwise specified) Parameter Output Voltage Symbol TJ VO Conditions =+25 C IO = 5mA to 1A, PO 15W VI = 14.8V to 27V VI= 14.8V to 30V IO = 500mA Line Regulation (Note1) Regline VI= 16V to 22V TJ =+25 C =+25 C VI= 14.5V to 27V VI= 16V to 22V Min. 11.75 11.5
Typ. 12 12 10 4 10 3 12 12 5 5.1
Max. 12.25 12.5 120 120 120 60 100 100 50 6.0 0.8 0.8 0.5
Unit V
mV
Load Regulation (Note1)
Regload
TJ IO = 5mA to 1.5A IO = 5mA to 1.0A IO = 250mA to 750mA TJ =+25C VI = 15V to 30V, TJ=+25 C VI = 14V to 27V, IO = 500mA IO = 5mA to 1.0A IO = 5mA f = 10Hz to 100KHz TA =+25C f = 120Hz, IO = 500mA VI = 14V to 24V IO = 1A, TJ =+25C f = 1KHz VI= 35V, TA =+25 C TJ=+25 C
mV
Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current
IQ IQ V/T VN RR VDrop rO ISC IPK
mA mA mV/C V/Vo dB V m mA A
-1.0 10 60 2.0 18 250 2.2
-
Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.
16
KA78XX/KA78XXA
Electrical Characteristics (KA7815A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I =23V, C I=0.33F, C O=0.1F, unless otherwise specified) Parameter Output Voltage Symbol TJ VO Conditions =+25 C IO = 5mA to 1A, PO 15W VI = 17.7V to 30V VI= 17.9V to 30V IO = 500mA Line Regulation (Note1) Regline VI= 20V to 26V TJ =+25C =+25 C VI= 17.5V to 30V VI= 20V to 26V Min. 14.7 14.4
Typ. 15 15 10 5 11 3 12 12 5 5.2 -1.0 10 58 2.0 19 250 2.2
Max. 15.3 15.6 150 150 150 75 100 100 50 6.0 0.8 0.8 0.5 -
Unit V
mV
Load Regulation (Note1)
Regload
TJ IO = 5mA to 1.5A IO = 5mA to 1.0A IO = 250mA to 750mA TJ =+25 C VI = 17.5V to 30V, TJ =+25 C VI = 17.5V to 30V, IO = 500mA IO = 5mA to 1.0A IO = 5mA f = 10Hz to 100KHz TA =+25 C f = 120Hz, IO = 500mA VI = 18.5V to 28.5V IO = 1A, TJ =+25 C f = 1KHz VI= 35V, TA =+25 C TJ=+25 C
mV
Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current
IQ IQ V/T VN RR VDrop rO ISC IPK
mA mA mV/C V/Vo dB V m mA A
-
Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.
17
KA78XX/KA78XXA
Electrical Characteristics (KA7818A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 27V, C I=0.33F, C O=0.1F, unless otherwise specified) Parameter Output Voltage Symbol TJ VO Conditions =+25 C IO = 5mA to 1A, PO 15W VI = 21V to 33V VI= 21V to 33V IO = 500mA Line Regulation (Note1) Regline VI= 21V to 33V TJ =+25 C =+25C VI= 20.6V to 33V VI= 24V to 30V Min. 17.64 17.3
Typ. 18 18 15 5 15 5 15 15 7 5.2 -1.0 10 57 2.0 19 250 2.2
Max. 18.36 18.7 180 180 180 90 100 100 50 6.0 0.8 0.8 0.5 -
Unit V
mV
Load Regulation (Note1)
Regload
TJ IO = 5mA to 1.5A IO = 5mA to 1.0A IO = 250mA to 750mA TJ =+25 C VI = 21V to 33V, TJ=+25 C VI = 21V to 33V, IO = 500mA IO = 5mA to 1.0A IO = 5mA f = 10Hz to 100KHz TA =+25C f = 120Hz, IO = 500mA VI = 22V to 32V IO = 1A, TJ =+25C f = 1KHz VI= 35V, TA =+25C TJ=+25 C
mV
Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current
IQ IQ V/T VN RR VDrop rO ISC IPK
mA mA mV/ C V/Vo dB V m mA A
-
Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.
18
KA78XX/KA78XXA
Electrical Characteristics (KA7824A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 33V, C I=0.33F, C O=0.1F, unless otherwise specified) Parameter Output Voltage Symbol TJ VO Conditions =+25 C IO = 5mA to 1A, PO 15W VI = 27.3V to 38V VI= 27V to 38V IO = 500mA Line Regulation (Note1) Regline VI= 21V to 33V TJ =+25 C =+25 C VI= 26.7V to 38V VI= 30V to 36V Min. 23.5 23
Typ. 24 24 18 6 18 6 15 15 7 5.2 -1.5 10 54 2.0 20 250 2.2
Max. 24.5 25 240 240 240 120 100 100 50 6.0 0.8 0.8 0.5 -
Unit V
mV
Load Regulation (Note1)
Regload
TJ IO = 5mA to 1.5A IO = 5mA to 1.0A IO = 250mA to 750mA TJ =+25 C VI = 27.3V to 38V, TJ =+25 C VI = 27.3V to 38V, IO = 500mA IO = 5mA to 1.0A IO = 5mA f = 10Hz to 100KHz TA = 25 C f = 120Hz, IO = 500mA VI = 28V to 38V IO = 1A, TJ =+25 C f = 1KHz VI= 35V, TA =+25 C TJ=+25 C
mV
Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current
IQ IQ V/T VN RR VDrop rO ISC IPK
mA mA mV/ C V/Vo dB V m mA A
-
Note: 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.
19
KA78XX/KA78XXA
Typical Perfomance Characteristics
I
Figure 1. Quiescent Current
Figure 2. Peak Output Current
Figure 3. Output Voltage
Figure 4. Quiescent Current
20
KA78XX/KA78XXA
Typical Applications
Input
Output
Figure 5. DC Parameters
Input
Output
Figure 6. Load Regulation
Input
Output
Figure 7. Ripple Rejection
Input
Output
Figure 8. Fixed Output Regulator
21
KA78XX/KA78XXA
Input CI CO
Output
Figure 9. Constant Current Regulator Notes: (1) To specify an output voltage. substitute voltage value for "XX." A common ground is required between the input and the Output voltage. The input voltage must remain typically 2.0V above the output voltage even during the low point on the input ripple voltage. (2) CI is required if regulator is located an appreciable distance from power Supply filter. (3) CO improves stability and transient response.
Input
Output
CI CO
I RI 5IQ VO = VXX(1+R2/R1)+IQR2 Figure 10. Circuit for Increasing Output Voltage
Input
Output
CO CI
IRI 5 IQ VO = VXX(1+R2/R1)+IQR2 Figure 11. Adjustable Output Regulator (7 to 30V)
22
KA78XX/KA78XXA
Input
Output
Figure 12. High Current Voltage Regulator
Input
Output
Figure 13. High Output Current with Short Circuit Protection
Figure 14. Tracking Voltage Regulator
23
KA78XX/KA78XXA
Figure 15. Split Power Supply ( 15V-1A)
Output Input
Figure 16. Negative Output Voltage Circuit
Input
Output
Figure 17. Switching Regulator
24
KA78XX/KA78XXA
Mechanical Dimensions
Package
TO-220
9.90 0.20 4.50 0.20
1.30 0.10
2.80 0.10
(8.70) o3.60 0.10
(1.70)
1.30 -0.05
+0.10
9.20 0.20
(1.46)
13.08 0.20
(1.00)
(3.00)
15.90 0.20
1.27 0.10
1.52 0.10
0.80 0.10 2.54TYP [2.54 0.20] 2.54TYP [2.54 0.20]
10.08 0.30
18.95MAX.
(3.70)
(45 )
0.50 -0.05
+0.10
2.40 0.20
10.00 0.20
25
KA78XX/KA78XXA
Mechancal Dimensions (Continued)
Package
D-PAK
6.60 0.20 5.34 0.30 (0.50) (4.34) (0.50)
0.70 0.20
2.30 0.10 0.50 0.10
0.60 0.20
6.10 0.20
2.70 0.20
9.50 0.30
0.91 0.10
0.80 0.20
MAX0.96 2.30TYP [2.300.20]
0.76 0.10 2.30TYP [2.300.20]
0.89 0.10
0.50 0.10 1.02 0.20 2.30 0.20
(0.70)
(0.90) (0.10) (3.05)
6.10 0.20
9.50 0.30
2.70 0.20
(2XR0.25)
0.76 0.10
26
(1.00)
6.60 0.20 (5.34) (5.04) (1.50)
MIN0.55
KA78XX/KA78XXA
Ordering Information
Product Number KA7805 / KA7806 KA7808 / KA7809 KA7810 KA7812 / KA7815 KA7818 / KA7824 KA7805A / KA7806A KA7808A / KA7809A KA7810A / KA7812A KA7815A / KA7818A KA7824A KA7805R / KA7806R KA7808R / KA7809R KA7812R 4% D-PAK 2% TO-220 0 ~ + 125C 4% Output Voltage Tolerance Package Operating Temperature
27
KA78XX/KA78XXA
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.
www.fairchildsemi.com 6/1/01 0.0m 001 Stock#DSxxxxxxxx 2001 Fairchild Semiconductor Corporation
2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

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