LM78L12PKR

The LM78L series (collectively referred to as LM78Lxx in this document) positive linear regulators offer multiple fixed output voltages, making these devices suitable for a wide range of applications. As a replacement for zener diode-resistor combinations, the LM78Lxx typically achieves up to two orders of magnitude improvement in effective output impedance while reducing quiescent current. This regulator series supports on-board local regulation, eliminating power distribution issues associated with single-point regulation. The available voltage options make the LM78Lxx suitable for logic systems, instrumentation, and industrial power delivery applications. The LM78Lxx with new die is available in SOIC (D) and SOT-89 (PK) packages. The LM78Lxx series regulators provide output current up to 100mA. Built-in current limiting restricts peak output current to a safe value. A thermal shutdown circuit prevents IC overheating in the event of excessive internal power dissipation.

Applications

• Servo and stepper drives
• Battery chargers
• Portable instruments
• LED lighting
• Appliances
• Logic systems
• Instrumentation
• Industrial power delivery

Key features

• Maximum 30V operating voltage; new chip maximum 45V, legacy chip maximum 35V
• Multiple fixed output voltage options: new chip offers 3.3V, 5V, 6V, 12V, 15V; legacy chip offers 5V, 6.2V, 8.2V, 9V, 12V, 15V
• 100mA output current
• Internal thermal overload protection
• Output current limiting
• Stable operation without external components
• New chip junction temperature range: -40℃ to 150℃; legacy chip maximum junction temperature: refer to Maximum Ratings
• Multiple package options: SOIC; SOT-89 (new chip only); TO-92 (legacy chip only); DSBGA (legacy chip only)