kia78m15t Korea Electronics (KEC GROUP), kia78m15t Datasheet - Page 8

• Manufacturer Part Number: kia78m15t
• Description: Bipolar Linear Integrated Circuit Three Terminal Positive Voltage Regulators
• Manufacturer: Korea Electronics (KEC GROUP)

2002. 8. 29
Design Considerations
The KIA78MXX fixed voltage regulator series has
built-in thermal overload protection which prevents
the device from being damaged due to excessive
junction temperature.
The regulators also contain internal short-circuit
protection which limits the maximum output current,
and safe-area protection for the pass transistor which
reduces the short circuit current as the voltage across
the pass transistor is increased. Although the internal
power dissipation is automatically limited, the maximum
junction temperature of the device must be kept
below+150
An adequate heatsink should be provided to assure this
limit is not exceeded under worst-case operating
conditions (maximum input voltage and load current)
if reliable performance is to be obtained.
15
12
9
6
3
0
0
WITHOUT HEAT
Tc=25 C
in order to meet data sheet specifications.
AMBIENT TEMPERATURE Ta ( C)
SINK
40
80
P
D
Revision No : 0
- Ta
THERMAL RESISTANCE
J-C
8.3
(KIA78M00T Series)
120
KIA78M05T KIA78M15T
83.3
J-A
160
C/W
200
V
IN
0.33µF
*
** Optional for improved transient response.
* Required if regulator input is more then 4 inches
form input filter capacitor.
(or if no input filter capacitor is used).
IN
KIA78MXX
GND
OUT
**
0.1µF
V
8/8
OUT