3-Terminal Negative Voltage Regulator Output Current Excess Outpu
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KA79XX/KA79XXA
3-Terminal Negative Voltage Regulator
Output Current Excess Output Voltages -10, -12, -15, -24V Internal Thermal Overload Protection Short Circuit Protection Output Transistor Safe Operating Area Compensation
Description
KA79XX/KA79XXA series three-terminal negative regulators available TO-220 package with several fixed output voltages, making them useful wide range applications. Each type employs internal current limiting, thermal shutdown safe operating area protection, making essentially indestructible.
TO-220
Input Output
Internal Block Digram
VOLTAGE REFERENCE
Output
PROTECTION CIRCUITRY
Input
Rev. 1.0.1
©2002 Fairchild Semiconductor Corporation
KA79XX/KA79XXA
Absolute Maximum Ratings
Parameter Input Voltage Thermal Resistance Junction-Case (Note1) Thermal Resistance Junction-Air (Note1, Operating Temperature Range Storage Temperature Range
Note: Thermal resistance test board Size: 76.2mm 114.3mm 1.6mm(1S0P) JEDEC standard: JESD51-3, JESD51-7 Assume ambient airflow
Symbol TOPR TSTG
Value +125 +150
Unit °C/W °C/W
Electrical Characteristics (KA7905)
-10V, 500mA, +125°C, =2.2µF, =1µF, unless otherwise specified.) Parameter Output Voltage Symbol +25°C -20V +25°C -25V -12V Conditions Min. Typ. Max. -4.8 -5.0 -5.2 Unit
-4.75 -5.0 -5.25 0.05 -0.4
Line Regulation (Note3) Load Regulation (Note3) Quiescent Current Quiescent Current Change
mV/°C
+25°C, 1.5A =+25°C, 250mA 750mA =+25°C -25V 10Hz 100kHz, +25°C 120Hz, =+25°C, =+25°C, -35V =+25°C
Temperature Coefficient Vo/T Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Electrical Characteristics (KA7906) (Continued)
-11V, 500mA, +125°C, =2.2µF, 1µF, unless otherwise specified.) Parameter Output Voltage Symbol =+25°C -21V +25°C -25V -13V Conditions Min. -5.75 -5.7 Typ. 0.05 -0.5 Max. -6.25 -6.3 Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Temperature Coefficient Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
Vo/T
mV/°C
+25°C, 1.5A +25°C, 250mA 750mA +25°C -25V 10Hz 100kHz, =+25°C 120Hz, +25°C, +25°C, -35V +25°C
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Electrical Characteristics (KA7908) (Continued)
-14V, 500mA, +125°C, =2.2µF, =1µF, unless otherwise specified.) Parameter Output Voltage Symbol =+25°C -10V -23V +25°C -10.5V -25V -11V -17V Conditions Min. -7.7 -7.6 Typ. 0.05 -0.6 Max. -8.3 -8.4 Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Temperature Coefficient Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
Vo/T
mV/°C
+25°C, 1.5A +25°C, 250mA 750mA +25°C -10.5V -25V 10Hz 100kHz, +25°C 120Hz, =+25°C, =+25°C, -35V +25°C
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Electrical Characteristics (KA7909) (Continued)
-15V, 500mA, +125°C, =2.2µF, =1µF, unless otherwise specified.) Parameter Output Voltage Symbol +25°C -1.5V -23V =+25°C -11.5V -26V -12V -18V Conditions Min. -8.7 -8.6 Typ. -9.0 -9.0 0.05 -0.6 Max. -9.3 -9.4 Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Temperature Coefficient Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
Vo/T
mV/°C
=+25°C, 1.5A =+25°C, 250mA 750mA +25°C -11.5V -26V 10Hz 100kHz, +25°C 120Hz, +25°C, +25°C, -35V +25°C
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Electrical Characteristics (KA7910) (Continued)
-17V, 500mA, +125°C, =2.2µF, =1µF, unless otherwise specified.) Parameter Output Voltage Symbol +25°C -12V +25°C -12.5V -28V -14V -20V Conditions Min. -9.6 -9.5 Typ. 0.05 Max. -10.4 -10.5 Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Temperature Coefficient Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
Vo/T
mV/°C
+25°C, 1.5A +25°C, 250mA 750mA +25°C -12.5 -28V 10Hz 100kHz, +25°C 120Hz, +25°C, +25°C, -35V +25°C
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Electrical Characteristics (KA7912) (Continued)
-19V, 500mA, +125°C, =2.2µF, =1µF, unless otherwise specified.) Parameter Output Voltage Symbol +25°C -15.5V -27V +25°C -14.5V -30V -16V -22V Conditions Min. -11.5 -11.4 Typ. 0.05 -0.8 Max. -12.5 -12.6 Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change
mV/°C
+25°C, 1.5A =+25°C, 250mA 750mA =+25°C -14.5V -30V 10Hz 100kHz, =+25°C 120Hz, +25°C, +25°C, -35V +25°C
Temperature Coefficient Vo/T Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Electrical Characteristics (KA7915) (Continued)
-23V, 500mA, +125°C, =2.2µF, =1µF, unless otherwise specified.) Parameter Output Voltage Symbol +25°C -18V -30V +25°C -17.5V -30V -20V -26V Conditions Min. -14.4 -14.25 Typ. 0.05 -0.9 Max. -15.6 -15.75 Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Temperature Coefficient Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
Vo/T
mV/°C
+25°C, 1.5A =+25°C, 250mA 750mA =+25°C -17.5V -30V 10Hz 100kHz, +25°C 120Hz, +25°C, +25°C, -35V +25°C
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Electrical Characteristics (KA7918) (Continued)
-27V, 500mA, +125°C, =2.2µF, =1µF, unless otherwise specified.) Parameter Output Voltage Symbol +25°C -22.5V -33V +25°C -21V -33V -24V -30V Conditions Min. -17.3 -17.1 Typ. 0.05 Max. -18.7 -18.9 Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Temperature Coefficient Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
Vo/T
mV/°C
+25°C, 1.5A +25°C, 250mA 750mA +25°C -21V -33V 10Hz 100kHz, +25°C 120Hz, +25°C, +25°C, -35V =+25°C
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Electrical Characteristics (KA7924) (Continued)
-33V, 500mA, +125°C, =2.2µF, =1µF, unless otherwise specified.) Parameter Output Voltage Symbol +25°C -27V -38V =+25°C -27V -38V -30V -36V Conditions Min. Typ. Max. -22.8 0.05 -25.2 Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change
mV/°C
+25°C, 1.5A +25°C, 250mA 750mA +25°C -27V -38V 10Hz 100kHz, =+25°C 120Hz, =+25°C, =+25°C, -35V =+25°C
Temperature Coefficient Vo/T Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Electrical Characteristics (KA7905A) (Continued)
-10V, 500mA, +125°C, =2.2µF, =1µF, unless otherwise specified.) Parameter Output Voltage Symbol +25°C -20V -20V -12V Conditions Min. -4.9 -4.8 Typ. -5.0 -5.0 0.05 -0.4 Max. -5.1 -5.2 mV/°C Unit
+25°C Line Regulation (Note1) -7.5V -25V
-12V, IO=1A Load Regulation (Note1) Quiescent Current Quiescent Current Change Temperature Coefficient Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current Vo/T 1.5A +25°C =+25°C, 250mA 750mA =+25°C -25V 10Hz 100kHz, =+25°C 120Hz, +25°C, +25°C, -35V +25°C
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Electrical Characteristics (KA7912A) (Continued)
-19V, 500mA, +125°C, =2.2µF, =1µF, unless otherwise specified.) Parameter Output Voltage Symbol =+25°C -15.5V -27V -14.5V -27V -16V -22V Conditions Min. -11.75 -11.5 Typ. 0.05 -0.8 Max. -12.25 -12.5 mV/°C Unit
+25°C Line Regulation (Note1)
-14.8V -30V -16V -22V, Load Regulation (Note1) Quiescent Current Quiescent Current Change Temperature Coefficient Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current Vo/T =+25°C, 1.5A =+25°C, 250mA 750mA =+25°C -15V -30V 10Hz 100kHz, =+25°C 120Hz, =+25°C, =+25°C, -35V =+25°C
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Electrical Characteristics (KA7915A) (Continued)
-23V, 500mA, +125°C, =2.2µF, =1µF, unless otherwise specified.) Parameter Output Voltage Symbol +25°C -18V -30V -17.5V -30V -20V -26V Conditions Min. Typ. Max. -14.7 -15.3 -14.4 -15.6 0.05 -0.9 mV/°C Unit
=+25°C Line Regulation (Note1)
-17.9V -30V -20V -26V, Load Regulation (Note1) Quiescent Current Quiescent Current Change Temperature Coefficient Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current Vo/T +25°C, 1.5A +25°C, 250mA 750mA =+25°C -18.5V -30V 10Hz 100kHz, =+25°C 120Hz, +25°C, =+25°C, -35V =+25°C
Note Load line regulation specified constant junction temperature. Changes heating effects must taken into account separately. Pulse testing with duty used.
KA79XX/KA79XXA
Typical Performance Characteristics
5.05 4.95
4.85
Vin=25V Io=100mA
Load Regulation[mV]
Output Voltage[-V]
Vin=10V Io=40mA
Io=1.5A
Io=0.75A
Ambient Temperature
Ambient Temperature
Figure Output Voltage
Figure Load Regulation
Ambient Temperature [oC]
Quiescent Current [mA]
Dropout Voltage
Io=1A
Ambient Temperature [oC]
Figure Quiescent Current
Figure Dropout Voltage
Short Circuit Current[A]
0.45 0.35 0.25 0.15 0.05
0.55
-0.05 -0.1
Ambient Temperature
Figure Short Circuit Current
KA79XX/KA79XXA
Typical Applications
2.2uF
Input
KA79XX
Output
Figure Negative Fixed output regulator
+15V
KA7812
0.33uF
+12V 1N4001
2.2uF -15V
1N4001 -12V
KA7912
Figure Split power supply 12V/1A) Note: specify output voltage, substitute voltage value Required stability. value given, capacitor must solid tantalum. aluminium electronics used, least times value shown should selected. required regulator located appreciable distance from power supply filter. improve transient response. large capacitors used, high current diode from input output (1N400l similar) should introduced protect device from momentary input short circuit.
KA79XX/KA79XXA
Mechanical Dimensions
Package Dimensions millimeters
TO-220
9.90 ±0.20
1.30 ±0.10 2.80 ±0.10
4.50 ±0.20
(8.70) ±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
KA79XX/KA79XXA
Ordering Information
Product Number KA7905 KA7906 KA7908 KA7909 KA7910 KA7912 KA7915 KA7918 KA7924 KA7905A KA7912A KA7915A TO-220 +125°C Output Voltage Tolerance Package Operating Temperature
KA79XX/KA79XXA
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES RIGHT MAKE CHANGES WITHOUT FURTHER NOTICE PRODUCTS HEREIN IMPROVE RELIABILITY, FUNCTION DESIGN. FAIRCHILD DOES ASSUME LIABILITY ARISING APPLICATION PRODUCT CIRCUIT DESCRIBED HEREIN; NEITHER DOES CONVEY LICENSE UNDER PATENT RIGHTS, RIGHTS OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS AUTHORIZED CRITICAL COMPONENTS LIFE SUPPORT DEVICES SYSTEMS WITHOUT EXPRESS WRITTEN APPROVAL PRESIDENT FAIRCHILD SEMICONDUCTOR CORPORATION. used herein: Life support devices systems devices systems which, intended surgical implant into body, support sustain life, whose failure perform when properly used accordance with instructions provided labeling, reasonably expected result significant injury user.
www.fairchildsemi.com 11/12/02 0.0m Stock#DSxxxxxxxx 2002 Fairchild Semiconductor Corporation
critical component component life support device system whose failure perform reasonably expected cause failure life support device system, affect safety effectiveness.
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