TPS79912DDCR

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

The TPS79912DDCR is a fixed-output linear low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It provides a fixed output voltage of 1.2V with a maximum continuous output current of 200mA. The device operates from an input voltage range up to 6.5V and features a typical dropout voltage of 100mV at full load. Quiescent current is specified at 40µA, contributing to efficient power management in battery-powered applications. The regulator includes comprehensive protection mechanisms such as overcurrent limiting, thermal shutdown, reverse polarity protection, and undervoltage lockout (UVLO). It is housed in a compact SOT-23-THIN package suitable for space-constrained designs.

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

• Ultra-low quiescent current consumption for extended battery life
• High power supply rejection ratio (PSRR) for noise-sensitive circuits
• Integrated protection against overcurrent, thermal overload, and reverse polarity
• Compact surface-mount packaging for dense board layouts

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

• Portable consumer electronics requiring stable low-voltage rails
• Battery-operated devices prioritizing energy efficiency
• Noise-sensitive analog or RF circuit power supplies
• Embedded systems utilizing single-cell lithium-ion or alkaline batteries

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

Verify the specific suffix 'DDCR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 1.2V fixed output aligns precisely with the target system voltage requirements before integration. Ensure compatibility with the SOT-23-THIN footprint on the printed circuit board layout. Cross-reference the manufacturer's latest datasheet for any updates regarding pin configurations or recommended external capacitor values to maintain stability under varying load conditions.

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

Select this component when a stable 1.2V rail is needed with minimal static power draw. The 200mA current capability suits moderate load applications without requiring external pass transistors. Consider the low dropout characteristic if the input voltage source is close to the output level, such as in single-cell battery systems. The inclusion of reverse polarity protection adds robustness against incorrect wiring during manufacturing or field maintenance phases.

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

This part belongs to the TPS799 family of high-performance LDO regulators designed for portable applications. The family offers various fixed output voltages while maintaining consistent electrical characteristics like low noise and high PSRR. The TPS79912DDCR specifically targets applications needing a 1.2V supply, distinguishing it from other variants offering different voltage levels within the same series.

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

TPS79912DDCT is a verified substitute offering identical electrical specifications but available in cut-tape packaging instead of reel.