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KA278R12

Description
Low Dropout Voltage Regulator
CategoryPower/power management    The power supply circuit   
File Size79KB,8 Pages
ManufacturerFairchild
Websitehttp://www.fairchildsemi.com/
Download Datasheet Parametric Compare View All

KA278R12 Overview

Low Dropout Voltage Regulator

KA278R12 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
Parts packaging codeTO-220F
package instruction, SIP4,.06TB
Contacts3
Reach Compliance Codeunknow
ECCN codeEAR99
AdjustabilityFIXED
Maximum drop-back voltage 10.5 V
Maximum absolute input voltage35 V
Maximum input voltage29 V
Minimum input voltage13 V
JESD-30 codeR-PSFM-T4
JESD-609 codee0
Maximum grid adjustment rate0.3%
Maximum load regulation0.24%
Number of functions1
Output times1
Number of terminals4
Working temperatureTJ-Max150 °C
Maximum operating temperature80 °C
Minimum operating temperature-20 °C
Maximum output current 12 A
Maximum output voltage 112.3 V
Minimum output voltage 111.7 V
Nominal output voltage 112 V
Package body materialPLASTIC/EPOXY
Encapsulate equivalent codeSIP4,.06TB
Package shapeRECTANGULAR
Package formFLANGE MOUNT
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Regulator typeFIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mountNO
technologyBIPOLAR
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationSINGLE
Maximum time at peak reflow temperatureNOT SPECIFIED
Maximum voltage tolerance2.4%
Base Number Matches1
www.fairchildsemi.com
KA278R12
Low Dropout Voltage Regulator
Features
2A / 12V Output low dropout voltage regulator
TO220 Full-Mold package (4PIN)
Overcurrent protection, Thermal shutdown
Overvoltage protection, Short-Circuit protection
With output disable function
Description
The KA278R12 is a low-dropout voltage regulator suitable
for various electronic equipments. It provide constant
voltage power source with TO-220F-4 lead full mold
package. Dropout voltage of KA278R12 is below 0.5V in
full rated current(2A). This regulator has various function
such as peak current protection, thermal shut down,
overvoltage protection and output disable function.
TO-220F-4L
1
1. Vin 2. Vo 3. GND 4. Vdis
Internal Block Diagram
Vin
1
Q1
2
Vo
THERMAL SHUTDOWN
OVERVOLTAGE
PROTECTION
BANDGAP REFERENCE
-
+
R1
SOA PROTECTION
HIGH / LOW
Vdis
4
-
+
OUTPUT
ON / OFF
1.4V
SHORT-CIRCUIT
SHORTCIRCUIT
PROTECTION
R2
3
GND
Rev. 1.0.2
©2001 Fairchild Semiconductor Corporation

KA278R12 Related Products

KA278R12 KA278R12YDTU KA278R12TU
Description Low Dropout Voltage Regulator Low Dropout Voltage Regulator Low Dropout Voltage Regulator
Is it Rohs certified? incompatible conform to conform to
Parts packaging code TO-220F TO-220F TO-220F
package instruction , SIP4,.06TB TO-220F, 4 PIN TO-220F, 4 PIN
Contacts 3 3 3
Reach Compliance Code unknow unknow unknow
ECCN code EAR99 EAR99 EAR99
Adjustability FIXED FIXED FIXED
Maximum drop-back voltage 1 0.5 V 0.5 V 0.5 V
Maximum absolute input voltage 35 V 35 V 35 V
Maximum input voltage 29 V 29 V 29 V
Minimum input voltage 13 V 13 V 13 V
JESD-30 code R-PSFM-T4 R-PZFM-T4 R-PSFM-T4
JESD-609 code e0 e3 e3
Maximum grid adjustment rate 0.3% 0.3% 0.3%
Maximum load regulation 0.24% 0.24% 0.24%
Number of functions 1 1 1
Output times 1 1 1
Number of terminals 4 4 4
Working temperatureTJ-Max 150 °C 150 °C 150 °C
Maximum operating temperature 80 °C 80 °C 80 °C
Minimum operating temperature -20 °C -20 °C -20 °C
Maximum output current 1 2 A 2 A 2 A
Maximum output voltage 1 12.3 V 12.3 V 12.3 V
Minimum output voltage 1 11.7 V 11.7 V 11.7 V
Nominal output voltage 1 12 V 12 V 12 V
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
Encapsulate equivalent code SIP4,.06TB ZIP4,.16,.06,100TB SIP4,.06TB
Package shape RECTANGULAR RECTANGULAR RECTANGULAR
Package form FLANGE MOUNT FLANGE MOUNT FLANGE MOUNT
Certification status Not Qualified Not Qualified Not Qualified
Regulator type FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mount NO NO NO
technology BIPOLAR BIPOLAR BIPOLAR
Terminal surface Tin/Lead (Sn/Pb) Matte Tin (Sn) Matte Tin (Sn)
Terminal form THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE
Terminal pitch 2.54 mm 2.54 mm 2.54 mm
Terminal location SINGLE ZIG-ZAG SINGLE
Maximum voltage tolerance 2.4% 2.5% 2.5%
Base Number Matches 1 1 1
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