7815 Datasheet – 15V, Voltage Regulator ( PDF )

art Number : 7815

Function : 15V, 3-terminal 1A positive voltage regulator

Package : TO-220 Type

Manufacturers : National Semiconductor, Motorola, KEC



Description :

The 7815 series of three terminal regulators is available with several fixed output voltages making them useful in a wide range of applications. One of these is local on card regulation, eliminating the distribution problems associated with single point regulation. The voltages available allow these regulators to be used in logic systems, instrumentation, HiFi, and other solid state electronic equipment. Although designed primarily as fixed voltage regulators these devices can be used with external components to obtain adjustable voltages and currents.

7815 voltage regulator is monolithic integrated circuits designed as fixed-voltage regulators for a wide variety of applications including local, on-card regulation.

The LM78XX series is available in an aluminum TO-3 package which will allow over 1.0A load current if adequate heat sinking is provided. Current limiting is included to limit the peak output current to a safe value. Safe area protection for the output transistor is provided to limit internal power dissipation. If internal power dissipation becomes too high for the heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating.

Pinouts :

1. Output current in excess of 1A
2. Internal thermal overload protection
3. No external components required
4. Output transistor safe area protection
5. Internal short circuit current limit

Reference site : https://www.onsemi.com/PowerSolutions/product.do?id=MC7815

7815 Datasheet PDF Download


KA7815 pdf

Other data sheets within the file : LM7815, KA7815, MC7815

LM339 Datasheet – Quad Voltage Comparator ( PDF )

Part Number : LM339

Function : Quad Voltage Comparator for Industrial, Commercial and Military Applications

Package : SOIC, DIP, 14 Pin type

Manufacturers : Intersil

Pinouts :

LM339 datasheet


Description :

The LM339 is Quad Voltage Comparator.

The devices in this series consist of four independent single or dual supply voltage comparators on a single monolithic substrate. The common mode input voltage range includes ground even when operated from a single supply, and the low power supply current drain makes these comparators suitable for battery operation. These types were designed to directly interface with TTL and CMOS.

Type CA139A, has a lower input offset voltage than the CA139. Some of the SOIC parts are available on tape and reel (see Ordering Information table). Replace the M suffix in
the part number with M96 when ordering (e.g.,CA0239M96).

LM339 Schematic


1. Operation from Single or Dual Supplies
2. Common Mode Input Voltage Range to GND
3. Output Voltage Compatible with TTL, DTL, ECL, MOS and CMOS
4. Differential Input Voltage Range Equal to the Supply Voltage


1. Square Wave Generator
2. Time Delay Generators
3. Pulse Generators
4. Multivibrators
5. High Voltage Digital Logic Gates
6. A/D Converters
7. MOS Clock Timers

LM339 Datasheet PDF Download

LM339 pdf

Other data sheets within the file : CA0139E, CA0139M, CA0239E, CA0239M96, CA0339E