Diodes Incorporated PT7M8216B09XYEX

Overview

PT7M8216B09XYEX from Pericom Semiconductor is a 0.9V fixed-output, 300mA low-dropout linear regulator in a 0.8mm×0.8mm UDFN-4L package, featuring 150mV dropout at 150mA, ±2% initial output accuracy, 75dB PSRR at 1kHz, and 36μA quiescent current - designed for power-sensitive portable RF and baseband circuits in mobile handsets.

For engineers reviewing the PT7M8216B09XYEX datasheet, PT7M8216B09XYEX pinout, PT7M8216B09XYEX application, or PT7M8216B09XYEX equivalent, key selection criteria include ultra-small footprint compatibility, guaranteed 300mA load capability with 0.47μF ceramic output capacitance, EN-controlled sequencing, and thermal/current protection for battery-powered systems operating from −40°C to +85°C.

Technical Context

The PT7M8216B09XYEX integrates a P-channel MOSFET pass element, precision bandgap reference, error amplifier with internal phase compensation, and active EN control logic. Its architecture enables stable regulation with low-ESR 0.47μF X5R/X7R ceramic capacitors on both input and output.

It implements overcurrent limiting (400mA typical), thermal shutdown at 170°C with 20°C hysteresis, auto output discharge via 50Ω internal path when disabled, and high-accuracy voltage trimming across the 0.9V–3.3V range in 100mV steps - with this variant factory-set to 0.9V output.

Key Specifications

Pinout & Package

PT7M8216B09XYEX is housed in a lead-free, green-compliant 0.8mm × 0.8mm UDFN-4L package (4-pin, bottom-exposed thermal pad). Pin 1 is V_OUT, Pin 2 is GND, Pin 3 is EN, Pin 4 is V_IN. Pin 5 is NC (not connected) and must be tied to GND or left floating per design guidance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6219B092MR-G and RT9013-09GB, PT7M8216B09XYEX delivers superior PSRR and smallest footprint - critical for space-constrained RF modules - while trading off slightly higher dropout and no adjustable enable polarity.

Availability

PT7M8216B09XYEX is available at Aetrix Electronics and suitable for mobile handset power management, RF transceiver biasing, portable imaging systems, and low-voltage audio subsystems requiring stable component supply with consistent parametric performance across production lots.

Supply support for PT7M8216B09XYEX 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) specialized in high-performance interface, timing, and power management ICs for communications and computing markets before its 2016 acquisition.

The PT7M8216 series was developed specifically for ultra-compact, battery-operated wireless devices demanding high PSRR, minimal quiescent current, and factory-trimmed precision in sub-1mm² packages.

FAQ

What is the recommended input and output capacitor configuration for PT7M8216B09XYEX?

Use 0.47μF X5R or X7R ceramic capacitors for both input (C_IN) and output (C_OUT), placed as close as possible to their respective pins. The device is internally compensated for stability with these values - no additional ESR or external compensation components are required. Avoid high-ESR types like tantalum or aluminum electrolytic.

Does PT7M8216B09XYEX support reverse current blocking?

No, PT7M8216B09XYEX does not include reverse current blocking. When V_OUT exceeds V_IN, current can flow backward through the P-MOSFET pass device. For applications requiring reverse polarity or backfeed protection, an external Schottky diode or dedicated reverse-blocking circuit must be added in series with V_IN.

How does the EN pin behave during power-up and power-down sequences?

The EN pin is active-high with 1.2V threshold. During power-up, regulation begins within 20μs after EN rises above V_ENH; during power-down, output discharges via internal 50Ω path once EN falls below V_ENL (≤0.3V), bringing V_OUT to near-zero in <1ms. Floating EN is not recommended due to increased leakage current.

Can PT7M8216B09XYEX operate with input voltage below 1.7V?

No - the absolute minimum input voltage is 1.7V per datasheet specifications. Below this, regulation cannot be guaranteed and the internal reference and error amplifier may cease functioning. For sub-1.7V operation, consider alternative regulators such as the Torex XC6206P092MR (1.0V min) or Ricoh RP111Z091D (0.7V min), though they differ in PSRR, package, and accuracy.