LD6806TD/29P,125

Overview

The LD6806TD/29P,125 is a low-dropout regulator in the SOT753 package with a nominal output voltage of 2.9 V. It operates within an input voltage range of 2.3 V to 5.5 V and supports a continuous output current of 200 mA. The device features a typical dropout voltage of 60 mV at full load and maintains a low quiescent current of 1.0 µA in shutdown mode. Electrical characteristics include a typical RMS output noise of 30 µV and a power supply rejection ratio of 55 dB at 1 kHz. The component includes integrated thermal protection, current limiting, and ESD protection rated at 10 kV Human Body Model.

Feature Summary

• Low-ohmic output state when disabled via internal pull-down switching transistor
• Integrated thermal watchdog and overcurrent protection circuits
• High-precision voltage regulation with ultra-low dropout performance
• Robust electrostatic discharge protection for sensitive mobile environments

Applications

• Analog and digital interfaces requiring lower than standard supply voltage in mobile appliances
• Power management for mobile phone handsets and cordless telephones
• Voltage regulation for personal digital devices and media players

Procurement Notes

Verify the specific suffix '125' against official NXP documentation to confirm tape-and-reel packaging specifications or moisture sensitivity level details not explicitly detailed in the general series datasheet. Ensure the ordering code matches the exact SOT753 package variant required for your PCB footprint. Cross-reference the part number with the manufacturer's latest release notes to confirm compliance with current environmental directives such as RoHS and halogen-free status.

Selection Notes

Select this component when a fixed 2.9 V output is required with minimal board space constraints due to the small SOT753 package. The low-ohmic disabled state makes it suitable for applications where the output must be actively pulled to ground during shutdown rather than remaining high-impedance. Ensure the application load does not exceed the 200 mA continuous rating and that the input voltage remains within the specified 2.3 V to 5.5 V window for stable operation.

Part Context

This device belongs to the LD6806 series of ultra low-dropout regulators manufactured by NXP Semiconductors. The series offers multiple package options including WLCSP4, SOT886, and SOT753. The 'TD' suffix identifies the SOT753 plastic surface-mounted package variant, while the '/29P' indicates a 2.9 V nominal output with a low-ohmic disabled state. The series is designed for miniaturization in portable consumer electronics.

Replacement Considerations

Direct substitutes within the same family include other LD6806 variants with different output voltages or package types, such as LD6806F/29P (SOT886) or LD6806CX4/29P (WLCSP4). Verify pin compatibility and package dimensions before substitution. No cross-family replacements are confirmed in the provided documentation.