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KA78R12C

Fairchild
Part Number KA78R12C
Manufacturer Fairchild
Description 1A Output Low Dropout Voltage Regulators
Published Jul 19, 2015
Detailed Description www.fairchildsemi.com KA78RXXC-Series 1A Output Low Dropout Voltage Regulators Features • 1A/3.3V, 5V, 8V, 9V, 12V, 15V...
Datasheet PDF File KA78R12C PDF File

KA78R12C
KA78R12C

Overview
www.
fairchildsemi.
com KA78RXXC-Series 1A Output Low Dropout Voltage Regulators Features • 1A/3.
3V, 5V, 8V, 9V, 12V, 15V output low dropout voltage regulator • TO-220 full-mold package (4pin) • Overcurrent protection, thermal shutdown • Overvoltage protection, short circuit protection • With output disable function Description The KA78RXXC is a low-dropout voltage regulator suitable for various electronic equipments.
It provides constant voltage power source with TO-220-4 lead full mold package.
Dropout voltage of KA78RXXC is below 0.
5V in full rated current(1A).
This regulator has various functions such as peak current protection, thermal shut down, overvoltage protection and output disable function.
TO-220F-4L Internal Block Diagram Vin 1 THERMAL SHUTDOWN BANDGAP REFERENCE Vdis HIGH / LOW 4 + OUTPUT ON / OFF 1.
4V 1 1.
Vin 2.
VO 3.
GND 4.
Vdis OVERVOLTAGE PROTECTION + SOA PROTECTION Q1 R1 SHSOHORRT-TCCIIRCCUUIITT PROTECTION R2 2 Vo ©2011 Fairchild Semiconductor Corporation 3 GND Rev.
1.
0.
1 KA78RXXC-SERIES Absolute Maximum Ratings KA78RXXC Parameter Input voltage Disable voltage Output current Power dissipation 1 Power dissipation 2 Junction temperature Operating temperature Thermal resistance, junction-to case (Note2) Thermal resistance, junction-to-air (Note2) Symbol Vin Vdis Io Pd1 Pd2 Tj Topr Rθjc Rθja Value 35 35 1.
0 1.
5 15 +150 -20 ~ +80 4.
31 48.
83 Unit V V A W W °C °C °C/W °C/W Remark - No heatsink With heatsink - 2 Electrical Characteristics (Vin = Note3, Io = 0.
5A, Ta = 25°C, unless otherwise specified) Parameter KA78R33C KA78R05C Output voltage KA78R08C KA78R09C KA78R12C KA78R15C Load regulation Line regulation Ripple rejection ratio Dropout voltage Disable voltage high Disable voltage low Disable bias current high Disable bias current low Quiescent current Symbol Vo Rload Rline RR Vdrop VdisH VdisL IdisH IdisL Iq Conditions - 5mA < Io < 1A Note4 Note1 Io = 1A Output active Output disabled Vdis = 2.
7V Vdis = 0.
4V ...


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