ka278r12 Fairchild Semiconductor, ka278r12 Datasheet - Page 2

• Manufacturer Part Number: ka278r12
• Description: Low Dropout Voltage Regulator
• Manufacturer: Fairchild Semiconductor

KA278R12
Absolute Maximum Ratings
Electrical Characteristics
(Vin=15V, Io=1.0A, Ta=25 C , unless otherwise specified)
Note:
1. These parameters, although guaranteed, are not 100% tested in production.
2. Junction -to -case thermal resistance test enviroments.
-. Pneumatic heat sink fixture.
-. Clamping pressure 60psi through 12mm diameter cylinder.
-. Thermal grease applied between PKG and heat sink fixture
2
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)
Thermal Shutdown Temperature
Parameter
Output Voltage
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
Rload
Vdrop
VdisH
VdisL
Rline
IdisH
IdisL
RR
Vo
Iq
5mA < Io < 2A
13V < Vin < 29V
note1
Output Active
Output Disabled
Io = 2A
Vdis = 2.7V
Vdis = 0.4V
Io = 0A
Symbol
Topr
R jc
R ja
Vdis
Ttsd
Pd1
Pd2
Vin
Conditions
Io
Tj
-
-20~80
Value
48.51
150
150
2.0
1.5
2.9
35
35
15
Min.
11.7
2.0
45
Unit
-
-
-
-
-
-
-
C/W
C/W
W
W
V
V
A
C
C
C
Typ.
0.1
0.5
12
55
-
-
-
-
-
-
With Heatsink
No Heatsink
Max.
12.3
Remark
-0.4
2.0
2.5
0.8
0.5
20
10
-
-
-
-
-
-
-
-
-
-
Unit
mA
mA
dB
%
%
V
V
V
V
A