TPS73633DCQ

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

The TPS73633DCQ is a low-dropout linear regulator from the Texas Instruments TPS736 series, housed in a surface-mount SOT-223 package with five pins. It delivers a maximum output current of 400 mA with an input voltage range spanning from 1.7 V to 5.5 V. The device operates within an extended temperature range of -40°C to +125°C and features a typical power supply rejection ratio of 58 dB. Designed for high accuracy, it utilizes a BiCMOS process to ensure stable performance under varying load conditions while maintaining low ground pin current.

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

• Cap-Free NMOS topology enables stable operation without requiring external output capacitors.
• High reverse blocking capability minimizes reverse current flow when input voltage drops below output.
• Constant ground pin current across all output current values simplifies biasing requirements.
• Integrated thermal shutdown and foldback current limit protect against overload conditions.

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

• Portable battery-powered consumer electronics
• RF modules requiring low noise power supplies
• Embedded systems with strict space constraints
• Voltage regulation for microcontrollers and sensors

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

Verify the specific suffix and tape-and-reel specifications against the manufacturer's latest datasheet before ordering. Confirm that the SOT-223-5 footprint matches your PCB design constraints. Ensure compliance with RoHS directives if required by your project standards. Cross-reference the part number with authorized distributors to confirm availability and authenticity. Check for any recent engineering change notices that may affect pinout or electrical characteristics.

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

Select this component when a compact, high-current LDO is needed for portable applications. The cap-free feature reduces bill of materials cost and board space. Consider the 400 mA output capability for driving moderate loads. Evaluate the 1.7 V minimum input voltage for efficient battery usage. Verify thermal dissipation capabilities within the SOT-223 package for your specific ambient temperature conditions.

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

This device belongs to the TPS736 family of ultra-low-dropout regulators designed for high-performance analog and RF applications. The family emphasizes precision and stability with minimal external components. The TPS73633 variant specifically offers fixed output options, catering to standard voltage rails. Its NMOS pass element provides superior efficiency compared to traditional PMOS designs.

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

Direct substitutes include TPS73633DBVR1G4 and TPS73633DBVTG4 for SOT-23-5 packages. For SOT-223-6 packages, consider TPS73633DCQR. Verify pin compatibility and thermal performance when swapping between these variants. Ensure the replacement supports the required 400 mA output current and operating temperature range.