TC1262-2.8VDB

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The TC1262-2.8VDB is a fixed output, high accuracy CMOS low dropout regulator manufactured by Microchip Technology. It provides a regulated 2.8 V output with a maximum current of 500 mA. The device operates within an input voltage range of 2.7 V to 6.0 V and features a typical supply current of 80 μA at full load. It incorporates overcurrent and overtemperature protection mechanisms. The component is housed in a 3-Pin SOT-223 package and supports an operating temperature range from -40°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• CMOS construction eliminates wasted ground current to extend battery life
• Integrated thermal shutdown and overcurrent protection circuits
• Stable operation with minimum 1 μF output capacitors

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery operated systems
• Portable computers
• Medical instruments
• Instrumentation
• Cellular/GSM/PHS phones

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'DB' confirms the 3-Pin SOT-223 package configuration. Confirm the 'V' designation indicates the -40°C to +125°C junction temperature range. Ensure the absence of the 'TR' suffix matches tube packaging requirements rather than tape and reel. Cross-reference the part number against the latest Microchip Product Identification System documentation for accurate ordering details.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 2.8 V rail is required with up to 500 mA load capability. The SOT-223 package is suitable for surface mount applications requiring moderate power dissipation. Consider the 80 μA quiescent current for efficiency in battery-powered designs. Verify that the input voltage remains above the dropout threshold across the entire operating temperature range.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The TC1262 belongs to a family of 500 mA fixed output CMOS LDO regulators designed specifically for battery-operated systems. This series offers high output voltage accuracy and ultra-low noise operation. The device serves as a direct upgrade to older bipolar regulators, providing significantly lower total supply current while maintaining stable regulation across the full load range.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

TC1262-2.8VAB (TO-220 Package)

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the minimum required output capacitance for stability?

A minimum of 1 μF capacitor from VOUT to ground is required. The capacitor should have an effective series resistance greater than 0.1 Ω and less than 5 Ω.

How does the TC1262 handle excessive heat?

The device includes integrated thermal protection circuitry that shuts the regulator off when the die temperature exceeds 160°C. It remains off until the temperature drops to approximately 150°C.