MC7805BDTRKG onsemi 5V 1A Fixed Positive Linear Voltage Regulator 35V Input - TO-252-2

MC7805BDTRKG Product Overview

The MC7805BDTRKG is a fixed-output positive linear voltage regulator from onsemi's MC7800 series, housed in a TO-252-2 (DPAK) surface-mount package. It provides a fixed 5V output with output current in excess of 1.0A (current limit 2.2A) and a maximum input voltage of 35V, with a typical dropout of 2V at 1A. Designed as a monolithic integrated circuit, it incorporates internal current limiting, thermal overload protection, and output transistor safe-area compensation, requiring no external components for stable operation. The MC7805BDTRKG is a pin-compatible replacement for the LM7805 and L7805, widely used in local and on-card regulation, industrial control, consumer electronics, computer peripherals, and battery chargers.

Typical Applications

Embedded system and on-card power regulation

Consumer electronics 5V power supply

Industrial control equipment power

Computer and peripheral power supplies

Battery chargers

Set-top boxes, monitors, TVs and home appliance power

General 5V voltage regulation circuits

FAQ

Q: What are the output voltage and current?
A: Fixed 5V output, 1.0A maximum output current (typical), with peak output current up to 2.2A. With adequate heatsinking, continuous output current in excess of 1.0A can be delivered.

Q: Does the regulator require external components?
A: No. The MC7805BDTRKG is designed as a fixed-voltage regulator requiring no external components. Although primarily designed as a fixed voltage regulator, it can be used with external components to obtain adjustable voltages and currents.

Q: What protection features are integrated?
A: Internal Thermal Overload Protection, Internal Short Circuit Current Limiting, and Output Transistor Safe-Area Compensation for device and system safety under abnormal conditions.

Q: What is the dropout voltage?
A: Typical dropout voltage is 2V at 1A output current. Input voltage range is 10V to 35V, with a typical operating input voltage of 24V.

Q: What is the operating temperature range?
A: -40℃ to +125℃ junction temperature, meeting industrial-grade environmental requirements.

Q: What is the difference between MC7805BDTRKG and MC7805BTG?
A: Both have identical electrical parameters, with the primary difference being package: MC7805BDTRKG uses TO-252-2 (DPAK) surface-mount package for automated SMT production; MC7805BTG uses TO-220 through-hole package for through-hole mounting or applications requiring external heatsinks.

Q: What should be noted for thermal design?
A: The MC7805 generates significant heat at higher output currents. Power dissipation is calculated as P = (VIN - VOUT) × IOUT. Use larger PCB copper area as a heatsink; the TO-252 package tab is connected to pin 2 (GND) and should be soldered to sufficient copper area for enhanced heat dissipation.

Why Choose QIXINWEI

Years of experience in the electronics industry. Trusted by global customers.

Massive In-Stock Inventory – Ready to ship promptly

BOM Matching Service – One-stop solution, save time

PCBA Customization – Professional engineering team creates tailor-made solutions based on your needs

Cost-Effective & Efficient – Better channel, better cost

A dedicated team makes your procurement smoother.

Contact us for BOM quotes or PCBA inquiries