PL79L05XA3 Datasheet, PDF (1/3 Pages) Cystech Electonics Corp. – Three Terminal Low Current Negative Voltage Regulators

CYStech Electronics Corp.
Three Terminal Low Current Negative Voltage Regulators
PL79L05XA3
Spec. No. : C530A3
Issued Date : 2003.04.04
Revised Date : . .
Page No. : 1/3
TO-92
Description
The PL79L05XA3 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 PL79L05A3 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 (PL78L05A3)
•Available in either ±3% or ±5% selection.
Absolute Maximum Ratings (Ta=25°C)
• Input Voltage……………………………………………………………………………………………….-30V
• 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
Vin
Vout
PL79L05
C1
C2
Note:
C1 and C2 are required if regulator is
located far from power supply filter
and load, or oscillation may induced
on the loop.
PL79L05A3
R8
R6
R5
Q10
R9
Q5
R18
Q4
R1
D1
R7
Gnd
R17
Q1
R4
R2
Z1
R3
Q8
Q14
Q9
C
Q2
Q6
Q7
R10
R11
R16
Outpu
Q12
Q13
Q11 R14
R15
Input
CYStek Product Specification