TC1269-2.5VUA

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

The TC1269-2.5VUA is a fixed-output, high-accuracy CMOS low dropout regulator manufactured by Microchip Technology. It provides a nominal output voltage of 2.5 V with a maximum output current capability of 300 mA. The device operates within an input voltage range of 2.7 V to 6.0 V and maintains stability with a minimum output capacitance of 1 µF. Key electrical specifications include a typical supply current of 50 µA at full load and a shutdown supply current of 0.05 µA. Voltage accuracy is typically ±0.5%, with line regulation at 0.05% and load regulation at 0.5%. Dropout voltages are specified as 80 mV at 100 mA and 480 mV at 300 mA. The component is housed in an 8-pin MSOP package and supports an operating temperature range from -40°C to +125°C.

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

• Integrates power-saving shutdown mode that reduces supply current to 0.05 µA when disabled.
• Includes a bypass input pin designed for ultra-quiet operation by reducing internal reference noise.
• Incorporates integrated over-current and over-temperature protection circuitry for enhanced reliability.

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

• Battery operated systems
• Portable computers
• Medical instruments
• Instrumentation
• Linear post-regulator for SMPS

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

Verify the specific part number suffix against official documentation to confirm package type and temperature grade. Ensure compatibility with required output voltage and current ratings for the target application. Confirm RoHS compliance status through manufacturer datasheets or environmental documents before procurement. Validate that the supplier source provides authentic Microchip Technology components to avoid counterfeit risks.

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

Select this regulator for applications requiring low ground current and high output voltage accuracy. Consider the 8-pin MSOP package for space-constrained designs. Evaluate thermal performance using junction-to-air resistance calculations if ambient temperatures approach limits. Verify that the external capacitor meets ESR requirements for stability. Check if the shutdown control logic aligns with system power management strategies.

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

The TC1269 series serves as a CMOS upgrade for older bipolar low dropout regulators, offering significantly lower supply currents. This specific variant delivers a fixed 2.5 V output. It belongs to the broader family of precision LDOs designed for portable and battery-powered electronics. The device replaces legacy solutions while maintaining similar form factors and functionality.

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

Public confirmed substitute part numbers: TC1269-2.5VUATR