LD6815TD/33P,125

Overview

The LD6815TD/33P,125 is a low dropout regulator (LDO) from the NXP LD6815 series, featuring a fixed nominal output voltage of 3.3 V and a maximum output current of 150 mA. It operates with an input voltage range of 2.3 V to 5.5 V and delivers a typical power supply rejection ratio (PSRR) of 75 dB at 1 kHz. The device exhibits a typical dropout voltage of 250 mV at full load and maintains an RMS output noise of 40 µV within the 10 Hz to 100 kHz bandwidth. In shutdown mode, it draws a quiescent current as low as 0.1 µA. The component utilizes an auto discharge function via a pull-down switching transistor in disabled states and is housed in a compact SOT753 (TSOP5) plastic package.

Feature Summary

• Integrates an auto discharge function using a pull-down switching transistor to provide a low-ohmic output state when disabled.
• Provides high-level electrostatic discharge protection rated at 6 kV under the Human Body Model standard.
• Features overcurrent protection mechanisms to safeguard against short circuits and excessive load conditions.
• Achieves ultra-high power supply rejection ratio performance to suppress input voltage ripples and noise.

Applications

• Smartphones
• Tablet PCs
• Mobile handsets
• Portable media players

Procurement Notes

Verify the specific suffix '125' against official documentation to confirm tape and reel specifications or marking codes. Ensure the selected variant matches the required pull-down output configuration for system compatibility. Confirm that the operating temperature range aligns with environmental requirements. Cross-reference the ordering information table to validate the part number extension against the desired nominal output voltage.

Selection Notes

Select this component when a stable 3.3 V rail is required with minimal external component count. The LD6815TD/33P is suitable for designs prioritizing low power consumption during standby due to its microampere shutdown current. Consider the SOT753 package dimensions for space-constrained layouts. Verify that the application load does not exceed the 150 mA continuous current rating to maintain regulation accuracy.

Part Context

This device belongs to the LD6815 series of low dropout regulators designed for portable electronics. The series offers various fixed output voltages ranging from 1.2 V to 3.6 V. The 'P' suffix indicates the inclusion of an auto discharge feature, distinguishing it from the 'H' variant which provides a high-ohmic state upon disablement. All devices in the family share similar electrical characteristics and packaging standards.

Replacement Considerations

LD6815TD/33H,125