PT7M8218B25CE

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

The PT7M8218B25CE is a fixed positive LDO regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 2.5V. It supports a guaranteed maximum output current of 300mA with an input voltage range spanning from 1.7V to 5.5V. The device features low dropout characteristics, achieving 150mV at 150mA for the 2.8V variant, and maintains high power supply rejection ratio (PSRR) of 75dB at 1kHz. Quiescent current is typically 36µA, while standby current drops to 0.05µA when disabled. Initial output accuracy is ±2%, and it operates within a temperature range of -40°C to +85°C in SC-70-5L or SOT23-5L packages.

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

• High ripple rejection capability with 75dB PSRR at 1kHz
• Integrated thermal shutdown and current limit protection circuits
• Auto output discharge function upon disablement
• Compatible with low ESR ceramic capacitors

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

• Cell phones and mobile communication devices
• Cordless phones and radio communication systems
• Digital still cameras and video cameras
• Personal digital assistants (PDA)
• MP3 players and portable electronic devices

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

Verify that the specific ordering suffix matches the required package type and output voltage configuration. Confirm RoHS compliance status and lead-free green packaging requirements against project specifications. Ensure the EN pin logic level aligns with system control signals, as this variant utilizes active-high enable functionality. Cross-reference datasheet revision dates to confirm electrical characteristic consistency.

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

Select this component for applications requiring stable regulation with minimal external components due to ceramic capacitor stability. Evaluate thermal dissipation capabilities based on the difference between input and output voltages multiplied by load current. Consider the low quiescent current for battery-operated systems where standby power consumption is critical. Verify that the input voltage remains within the specified operating range under all transient conditions.

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

This part belongs to the PT7M8218 series of low dropout regulators designed for portable electronics. The series offers various factory-trimmed output voltages ranging from 0.9V to 3.3V in 100mV steps. Manufactured originally by Pericom Semiconductor Corporation and now distributed by Diodes Incorporated, these regulators integrate reference voltage sources, error amplifiers, and driver transistors into a compact surface-mount footprint.

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

PT7M8218B25TAE serves as the equivalent alternative utilizing the SOT23-5L package instead of the SC-70-5L form factor. Both variants share identical electrical specifications, pin configurations, and functional characteristics. Designers must verify mechanical footprint compatibility during substitution to ensure proper PCB layout integration.