LD6815TD/28P,125

Overview

The LD6815TD/28P,125 is a low dropout regulator (LDO) from the NXP LD6815 series, featuring a fixed nominal output voltage of 2.8 V and housed in an SOT753 (TSOP5) package. It supports an input voltage range of 2.3 V to 5.5 V with a maximum output current of 150 mA. The device provides high power supply rejection ratio (PSRR) of 75 dB at 1 kHz and maintains a typical dropout voltage of 250 mV at full load. It includes an auto discharge function via a pull-down switching transistor for low-ohmic output states during shutdown.

Feature Summary

• Integrates an auto discharge function using a pull-down switching transistor to ensure a low-ohmic output state when disabled.
• Provides high-level electrostatic discharge protection rated at 6 kV under the Human Body Model standard.
• Features ultra-high power supply rejection ratio capability to effectively suppress input noise and ripples.
• Maintains extremely low quiescent current consumption in shutdown mode to optimize system power efficiency.

Applications

• Smartphones
• Tablet PCs
• Mobile handsets

Procurement Notes

Verify the specific suffix 'P' confirms the inclusion of the pull-down auto discharge function rather than the high-ohmic variant. Ensure the ordering code matches the required 2.8 V nominal output specification. Confirm that the SOT753 package dimensions align with the target PCB footprint requirements before finalizing procurement decisions.

Selection Notes

Select this component when a fixed 2.8 V rail is required alongside active output discharge capabilities. The LD6815TD/28P is suitable for designs needing high PSRR performance in space-constrained environments utilizing the TSOP5 package. Consider the thermal resistance characteristics and external capacitor ESR requirements to maintain stability across the specified operating temperature range.

Part Context

This part belongs to the NXP LD6815 series of small-size low dropout regulators designed for portable electronics. The series offers various fixed output voltages ranging from 1.2 V to 3.6 V within the same compact plastic surface-mounted package format. The LD6815TD/28P specifically addresses applications requiring precise 2.8 V regulation with enhanced shutdown behavior compared to standard LDOs.

Replacement Considerations

LD6815TD/28H,125