CYStech Electronics Corp.
3-TERMINAL NEGATIVE VOLTAGE REGULATOR
Spec. No. : C535E3
Issued Date : 2003.04.08
Revised Date :
Page No. : 1/4
PL7909XE3
Description
The PL7909XE3 series of three-terminal negative regulators are
available in the TO-220AB package. These regulators can provide
TO-220AB
local on-card regulation, eliminating the distribution problems
associated with single point regulation. Each employs internal current
limiting, thermal shutdown and safe operating area protection, making it essentially indestructible.
If adequate heat sinking is provided, they can deliver over 1A output current. Although designed
primarily as fixed voltage regulators, these devices can be used with external components to
obtain adjustable voltages and currents.
PL7909XE3 is characterized for operation from 0°C to +125°C, and if operating temperature is
always high, please refer to the power dissipation curve.
Absolute Maximum Ratings
(Ta=25°C)
•
Input Voltage ...................................................................................................................... -35 V
•
Total Power Dissipation .................................................................................... Internally limited
•
Operating Junction Temperature ....................................................................... 0
°C
to +125
°C
•
Maximum Junction Temperature ..................................................................................... 125
°C
•
Storage Temperature Range .......................................................................... -55
°C
to +150
°C
•
Lead Temperature (Soldering 10S) ................................................................................. 230
°C
Typical Application
Schematic Diagram
1.4k
GND
Vin
2
PL7909
1
3
Vout
4K
7K
5K
15K
C1
C2
3K
10K
Vout
6.2V
Note:
Bypass Capacitors are
recommended for optimum stability
and transient response and should
be located as close as possible to
the regulator.
750
Vin
1K
6K
20K
20K
20pF
10pF
600
15K
20K
20K
5K
150
0.2
PL7909E3
CYStek Product Specification