CYStech Electronics Corp.
Three Terminal Low Current Positive Voltage Regulators
Spec. No. : C519A3
Issued Date : 2003.03.26
Revised Date :
. .
Page No. : 1/4
TO-92
PL78L12XA3
Description
These regulators employ internal current-limiting and thermal-shutdown,
making them essentially indestructible. They can deliver up to 100mA
output current. if the case temperature can keep in Tc=25°C.
They are intended as fixed voltage regulators in a wide range of appli-
cations including local (on-card) regulation for elimination of noise and
distribution problems associated with single-point regulation. In addition,
they can be used with power pass elements to make high-current
voltage regulators. The PL78L12 used as a Zener diode/resistor com-
bination replacement, offers an effective output impedance improvement
of typically two orders of magnitude, along with lower quiescent current
and lower noise.
Absolute Maximum Ratings
(Ta=25°C)
•
Input Voltage………………………………………………………………………………………………. 35 V
•
Total Power Dissipation……………………………………………………………………. Internally limited
•
Operating Temperature Range……………………………………………………………. 0
°C
to +125
°C
•
Maximum Junction Temperature………………………………………………………………………125
°C
•
Storage Temperature Range………………………………………………………………-55
°C
to +150
°C
•
Lead Temperature (Soldering 10S)………………………………..
……………………………...260
°C
Typical Application
Schematic Diagram
Vin
Vin
PL78L12
Vout
5k
5.7kΩ
100
1.5kΩ
1.9kΩ
5p
3.41kΩ
3.89kΩ
7.8kΩ
13kΩ
2.23kΩ
Vout
100
C1
C2
576Ω
Note:
C1 and C2 are required if regulator is
located far from power supply filter
and load, or oscillation may induced
on the loop.
2.84kΩ
Gnd
PL78L12A3
CYStek Product Specification
CYSTEKEC [ CYSTECH ELECTONICS CORP. ]
