CYStech Electronics Corp.
Three Terminal Low Current Negative Voltage Regulators
Spec. No. : C531A3
Issued Date : 2003.04.08
Revised Date :
. .
Page No. : 1/3
TO-92
PL79L12XA3
Description
The PL79L12XA3 is an inexpensive, easy-to-use device suitable for numerous
applications requiring up to 100mA. Like the higher powered PL7900E3 series
negative regulators, this device features thermal shutdown and current limiting,
making it remarkably rugged. In most applications, no external components are
required for operation.
The PL79L12A3 device is useful for on-card regulation or any other application where a regulated negative voltage
at a modest current level is needed. This regulator offers substantial advantage over the common resistor/zener diode
approach.
•
No external components required
•Internal
short circuit current limiting
•Internal
thermal overload protection
•Low
cost
•Complementary
positive regulators offered(PL78L12A3)
•Available
in either
±3%
or
±5%
selection.
Absolute Maximum Ratings
(Ta=25°C)
•
Input Voltage……………………………………………………………………………………………….-35V
•
Total Power Dissipation……………………………………………………………………. Internally limited
•
Operating Temperature Range……………………………………………………………. 0
°C
to +125
°C
•
Maximum Junction Temperature……………………………………………………………………..+150
°C
•
Storage Temperature Range………………………………………………………………-55
°C
to +150
°C
•
Lead Temperature (Soldering 10S)………………………………..
……………………………...260
°C
Typical Application
Representative Schematic Diagram
Gnd
Vin
PL79L12
Vout
R5
R18
R1
D1
R6
R8
Q10
Q5
Q4
R7
Q8
Q14
Q9
R4
R16
R9
R17
C1
C2
Q1
Outpu
Q12
R2
Z1
C
R3
Q6
R10
R11
Q7
R15
Q2
Q11
R14
Q13
Note:
C1 and C2 are required if regulator is
located far from power supply filter
and load, or oscillation may induced
on the loop.
PL79L12A3
Input
CYStek Product Specification
CYSTEKEC [ CYSTECH ELECTONICS CORP. ]
