Date: 8/3/06 Rev H

SP78LXX 00mA 3-Terminal Positive Voltage Regulator

© 2006 Sipex Corporation

general Description

The S

P78LXX series are three terminal positive regulators with several fixed output voltages. These regulators can pro-

vide local on-card regulation, eliminating distribution problems associated with single point regulation. The S

P78LXX

can be used in logic systems, instrumentation, HiFi, and other solid state electronic equipment. When used as a Zener

diode/resistor combination replacement, the S

P78LXX usually results an effective output impedance improvement of

two orders of magnitude, and lower quiescent current.

With adequate heat sinking the S

P78LXX can deliver 100 mA output current. Current limiting is included to limit the peak

output current to a safe value. Thermal protection is also provided. If internal power dissipation becomes too high for the

heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating.

The S

P78LXX are available in the plastic TO-92, NSOIC-8, SOT-223 and SOT-89 packages.

Features

Output Current up to 100 mA

Fixed Output Voltage of 5V and 12V

Output Voltage Tolerances of

5% over the Full

Temperature Range

Internal Short Circuit Current-Limiting

Internal Thermal Overload Protection

No External Components

Available in Lead Free, RoHS Compliant Packaging

Applications

High Efficiency Linear Regulator

Post Regulation for Switching Supply

Microprocessor Power Supply

Mother Board I/O Power Supply

NSOIC-8

Figure . Package Types of the SP78LXX

TO-2

SOT-223

SOT-8

SOT-8 Package

OUTPUT

GND

2

3

1

INPUT

GND



SP78LXX

Solved by

TM

100mA 3-Terminal Positive Voltage Regulator