Diodes Incorporated PT7M8216B30XZEX

Overview

PT7M8216B30XZEX from Pericom Semiconductor is a 3.0V fixed-output, 300mA low-dropout linear regulator in a 1mm×1mm UDFN-4L package, featuring 150mV dropout at 150mA, ±2% initial output accuracy, 75dB PSRR at 1kHz, and auto output discharge-designed for power management in space-constrained portable RF and digital baseband circuits.

For engineers reviewing the PT7M8216B30XZEX datasheet, PT7M8216B30XZEX pinout, PT7M8216B30XZEX application, or PT7M8216B30XZEX equivalent, key selection criteria include guaranteed 300mA load capability with 0.47µF ceramic output capacitance, thermal shutdown at 170°C, EN pin high-active control, and operation across –40°C to +85°C ambient.

Technical Context

The PT7M8216B30XZEX integrates a P-channel MOSFET pass element, internal reference voltage source, error amplifier with phase compensation, and protection circuitry including current limit (400mA typ.) and thermal shutdown (170°C). Its architecture enables stable regulation with ultra-low ESR ceramic capacitors without external compensation.

It operates with input voltages from 1.7V to 5.5V and delivers precise 3.0V output with <±100 ppm/°C temperature coefficient and 60µV_RMS output noise (10Hz–100kHz). The EN pin supports system-level power sequencing, while auto-discharge via 50Ω internal resistor ensures rapid VOUT decay during disable.

Key Specifications

Pinout & Package

PT7M8216B30XZEX is housed in a Pb-free, green 4-pin UDFN package measuring 1.0mm × 1.0mm × 0.5mm (max), with wettable flank leads for automated optical inspection (AOI) and solder joint reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with XC6219B302MR-G and RT9193-30GB, PT7M8216B30XZEX uniquely combines ultra-low dropout (150mV), industry-leading PSRR (75dB), and integrated auto-discharge in a 1mm² footprint-making it optimal for next-gen portable RF and imaging systems demanding both efficiency and signal purity.

Availability

PT7M8216B30XZEX is available at Aetrix Electronics and suitable for smartphone baseband power, RF front-end biasing, and portable audio codec supply requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for PT7M8216B30XZEX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Pericom Semiconductor (now part of Diodes Incorporated) is a fabless provider of high-performance interface, timing, and power management ICs, focused on signal integrity and miniaturization for communications and consumer electronics.

PT7M8216 belongs to Pericom's ultra-low-noise, high-PSRR LDO family engineered specifically for powering noise-sensitive RF, imaging, and audio subsystems in space-constrained portable devices.

FAQ

What is the minimum input voltage required for stable 3.0V output at full 300mA load?

The PT7M8216B30XZEX requires VIN ≥ 3.15V to maintain regulated 3.0V output at 300mA, based on its maximum dropout voltage of 150mV at 150mA and confirmed performance curves showing <10mV droop up to 300mA with VIN = VOUT + 0.2V. At lower currents, it operates down to 1.7V input.

Can PT7M8216B30XZEX operate with only 0.22µF output capacitance?

No-datasheet specifies stability only with ≥0.47µF X5R/X7R ceramic capacitors. Using 0.22µF violates the minimum capacitance requirement and risks oscillation or poor transient response, as confirmed by phase margin analysis in the application note and typical performance graphs.

Is the NC pin (Pin 5) required to be grounded?

Pin 5 is labeled "NC" and explicitly stated as acceptable to leave open; however, grounding it improves noise immunity and thermal dissipation margin. It is not electrically connected internally, so neither configuration affects regulation-but grounding is recommended for robust EMI performance in noisy RF environments.

Does PT7M8216B30XZEX support reverse current blocking?

No-the device uses a P-channel MOSFET pass element that inherently allows reverse current flow from VOUT to VIN when VOUT > VIN. Reverse-blocking functionality is not implemented; external diode or ideal diode controller is required if backfeed prevention is needed beyond the internal auto-discharge path.