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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated PT7M8216B12XZEX

Name: PT7M8216B12XZEX
Brand: Diodes Incorporated
SKU: PT7M8216B12XZEX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PT7M8216B12XZEX

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 4-XDFN Exposed Pad

Datasheet:: PT7M8216B12XZEX.pdf

Description:: IC REG LINEAR 1.2V 300MA 4UDFN

Quantity:: RFQ Add To RFQ list

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Inventory:1,846

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Product details

Overview

PT7M8216B12XZEX from Pericom Semiconductor is a 300mA, high-PSRR low-dropout regulator with 2.8V fixed output voltage, 150mV dropout at 150mA, ±2% initial accuracy, and stable operation with 0.47µF ceramic output capacitors. It delivers precision power to noise-sensitive RF and digital baseband circuits in compact portable devices.

For engineers reviewing the PT7M8216B12XZEX datasheet, PT7M8216B12XZEX pinout, PT7M8216B12XZEX application, or PT7M8216B12XZEX equivalent, key selection criteria include its 75dB PSRR at 1kHz, 36µA quiescent current, thermal shutdown (170°C), auto output discharge, and UDFN-4L 1mm×1mm package compatibility with space-constrained PCB layouts.

Technical Context

The PT7M8216B12XZEX integrates a P-channel MOSFET pass element, error amplifier with internal phase compensation, reference voltage source, and protection circuitry including current limit (400mA) and thermal shutdown. Its architecture enables stability with ultra-low-ESR 0.47µF X5R/X7R ceramic capacitors on both input and output.

EN pin control is high-active with V_ENH ≥1.2V and V_ENL ≤0.3V; standby current drops to 0.05µA when EN = GND. Output voltage accuracy is maintained across –40°C to +85°C ambient via ±100ppm/°C temperature coefficient and ±2% initial tolerance.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	2.8V fixed - factory-trimmed for precision biasing of RF transceivers and core logic without external feedback.
Max Output Current	300mA - sufficient to power dual-core application processors or multi-rail PMIC subsystems in handheld devices.
Dropout Voltage	150mV @ 150mA - enables regulation from 2.95V input down to 2.8V output, critical for battery-powered systems near end-of-discharge.
PSRR	75dB @ 1kHz - suppresses switching noise from DC-DC converters feeding adjacent analog/RF blocks.
Quiescent Current	36µA - minimizes battery drain during sleep modes in always-on sensor or connectivity ICs.
Operating Temp	–40°C to +85°C - validated for consumer-grade mobile and industrial edge node environments.
Output Accuracy	±2% initial - ensures reliable startup and stable operation of voltage-sensitive peripherals like image sensors and ADCs.

Pinout & Package

PT7M8216B12XZEX is housed in a Pb-free, green-compliant 4-pin UDFN-4L package measuring 1.0mm × 1.0mm × 0.5mm (max height), optimized for high-density portable PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1 - VOUT	Regulator output	Delivers regulated 2.8V; requires 0.47µF X5R/X7R ceramic capacitor placed within 2mm of pin for stability and transient response.
2 - GND	Power ground	Primary return path for load current and internal bias; must be connected to low-impedance PCB ground plane.
3 - EN	Enable control input	High-active logic interface (1.2V min high, 0.3V max low); drives internal P-MOSFET gate to enable/disable output.
4 - VIN	Input supply	Accepts 1.7V–5.5V input; bypassed with 0.47µF ceramic capacitor to GND to suppress supply ripple and prevent oscillation.
5 - NC	No-connect terminal	Internally unconnected; recommended to tie to GND for mechanical stability and EMI reduction, though floating is acceptable.

Key Features

Feature	Design Value
Stable with 0.47µF ceramic capacitors	Eliminates need for large tantalum or aluminum electrolytic caps-reduces board area by >60% and improves reliability over temperature.
Auto output discharge	Internal 50Ω discharge path activates when EN = low, ensuring rapid VOUT decay to prevent latch-up or back-powering of upstream circuitry.
Low noise (60µV_rms)	Enables clean power delivery to PLLs, VCOs, and high-resolution ADCs without requiring additional filtering stages.
Thermal shutdown + current limit	Protects against sustained overload or PCB-level thermal runaway-shuts down at 170°C with 20°C hysteresis for safe recovery.
High PSRR (75dB @ 1kHz)	Maintains output integrity when co-located with noisy DC-DC converters, enabling single-supply partitioning in RF front-end modules.

Applications

Mobile Baseband Power

RF Transceiver Bias

Use Scenario: Powers ARM-based application processor cores and memory interfaces in LTE smartphones during active data transmission.

IC Role / Device Role / Timing Role: Primary LDO supplying 2.8V to processor I/O banks and DDR termination, synchronized with system power sequencing via EN pin.

Use Value: 36µA quiescent current extends standby time; 150mV dropout preserves headroom as Li-ion battery discharges from 4.2V to 3.0V.

Use Scenario: Provides clean 2.8V bias to PA driver stages and LNA modules in 5G NR sub-6GHz front-end modules.

IC Role / Device Role / Timing Role: Low-noise, high-PSRR post-regulator decoupling LDO placed immediately before RF IC power pins.

Use Value: 60µV_rms noise and 75dB PSRR prevent AM-to-PM distortion and EVM degradation in transmit paths.

Digital Camera Sensor Supply

Portable Audio Codec Power

Use Scenario: Supplies 2.8V to CMOS image sensor analog front-end and column ADC in compact action cameras.

IC Role / Device Role / Timing Role: Dedicated LDO for sensor analog rail, enabled only during capture mode to minimize dark current and thermal noise.

Use Value: ±2% output accuracy ensures consistent pixel response; auto discharge prevents ghost images during fast frame-rate transitions.

Use Scenario: Powers stereo audio codec's DAC and headphone amplifier in Bluetooth earbuds with 30-hour battery life.

IC Role / Device Role / Timing Role: Low-quiescent LDO delivering 2.8V to audio signal chain, controlled by SoC GPIO via EN pin for dynamic power gating.

Use Value: 36µA ISS enables <1µA system deep-sleep current; 0.47µF ceramic cap fits within 1.2mm² footprint on tiny earbud PCB.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Torex XC6219B282MR-G	Same 2.8V output, 300mA rating, but 250mV dropout @ 150mA and 50µA IQ; UDFN-4 1.0×1.0mm package.	Lacks auto output discharge and has lower PSRR (65dB @ 1kHz); suitable where cost sensitivity outweighs noise performance.	Select when board-level discharge is handled externally and PSRR >70dB is not required for RF sections.
Richtek RT9013-28GB	2.8V, 300mA, 200mV dropout @ 150mA, 45µA IQ, 70dB PSRR @ 1kHz; SOT-23-5 package (larger footprint).	Includes EN pin but no auto discharge; higher thermal resistance due to SOT-23 package limits continuous 300mA in confined spaces.	Prefer when existing layout uses SOT-23 footprints and thermal derating to 200mA is acceptable.

Compared with XC6219B282MR-G and RT9013-28GB, PT7M8216B12XZEX offers superior PSRR and integrated discharge functionality in the smallest footprint-critical for next-gen ultra-thin mobile designs where noise margin and board area are constrained.

Availability

PT7M8216B12XZEX is available at Aetrix Electronics and suitable for mobile baseband power, RF transceiver bias, digital camera sensor supply, and portable audio codec power requiring stable component supply and long-term lifecycle support.

Supply support for PT7M8216B12XZEX 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) specializes in high-performance interface, timing, and power management ICs for communications, computing, and consumer electronics.

PT7M8216 belongs to Pericom's precision LDO family designed specifically for space-constrained, battery-operated portable devices demanding ultra-low noise, high PSRR, and minimal quiescent current.

FAQ

What is the minimum input voltage required for stable 2.8V output at 300mA?

The PT7M8216B12XZEX requires VIN ≥ VOUT + VDROPOUT. At 300mA, dropout rises to ~220mV (extrapolated from 150mV @ 150mA and typical curve slope). Thus, minimum VIN is 3.02V. Operation below this causes output collapse or current limiting.

Can the NC pin be left floating without affecting performance?

Yes-the NC pin is internally unconnected and may float per datasheet guidance. However, tying it to GND improves mechanical anchoring and reduces potential EMI coupling; no electrical penalty exists for either choice.

Is an input capacitor mandatory, and what value is recommended?

Yes-an input capacitor is mandatory for stability and noise suppression. A 0.47µF X5R or X7R ceramic capacitor placed within 2mm of VIN and GND pins is specified and validated. Omitting it risks oscillation under load transients.

How does the auto output discharge function interact with system power sequencing?

When EN is pulled low, the internal 50Ω discharge path activates, pulling VOUT to GND in ~1.5ms (calculated from 0.47µF × 50Ω). This prevents back-powering of upstream regulators or latch-up in powered-down logic, simplifying multi-rail sequencing.

PT7M8216B12XZEX Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 4-XDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 1.2V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.18V @ 150mA (Typ)

Current - Output:: 300mA

Current - Quiescent (Iq):: 65 µA

Current - Supply (Max):: -

PSRR:: 75dB (1kHz)

Control Features:: Enable

Protection Features:: Over Current, Over Temperature

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 4-UDFN (1.0x1.0)

PT7M8216B12XZEX FAQ

1.How can I place an order for PT7M8216B12XZEX through Aetrix?

Please submit a Request for Quotation (RFQ) for PT7M8216B12XZEX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for PT7M8216B12XZEX reliable?

The price and inventory of PT7M8216B12XZEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M8216B12XZEX is usually 5 days.

3.What payment methods are accepted for PT7M8216B12XZEX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M8216B12XZEX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PT7M8216B12XZEX?

PT7M8216B12XZEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PT7M8216B12XZEX order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for PT7M8216B12XZEX?

For technical support, including PT7M8216B12XZEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M8216B12XZEX requirements.

6.How does Aetrix verify that PT7M8216B12XZEX is sourced from the original manufacturer or authorized distributors?

All PT7M8216B12XZEX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PT7M8216B12XZEX meets industry standards.

7.What is the process for return or replacement of PT7M8216B12XZEX?

All PT7M8216B12XZEX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M8216B12XZEX, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The PT7M8216B12XZEX part is unused and in its original packaging.

Return procedure for PT7M8216B12XZEX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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