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

Diodes Incorporated PT7M8218B12CE

Name: PT7M8218B12CE
Brand: Diodes Incorporated
SKU: PT7M8218B12CE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PT7M8218B12CE

Manufacturer:: Diodes Incorporated

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

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: PT7M8218B12CE.pdf

Description:: IC REG LINEAR 1.2V 300MA SC70-5

Quantity:: RFQ Add To RFQ list

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Inventory:1,545

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Product details

Overview

PT7M8218B12CE from Pericom Semiconductor is a 300mA, high-PSRR low-dropout regulator with 2.8V fixed output voltage, ±2% initial accuracy, 150mV dropout at 150mA, and 75dB PSRR at 1kHz-designed for power-sensitive portable RF and imaging subsystems in mobile handsets and digital cameras.

For engineers reviewing the PT7M8218B12CE datasheet, PT7M8218B12CE pinout, PT7M8218B12CE application, or PT7M8218B12CE equivalent, key selection criteria include guaranteed 300mA load capability with 0.47µF ceramic output capacitance, auto-discharge functionality, thermal shutdown at 170°C, and dual SC70-5L/SOT23-5L package support.

Technical Context

The PT7M8218B12CE integrates a P-channel MOSFET pass element, internal reference voltage source, error amplifier with phase compensation, and EN-controlled ON/OFF circuitry. Its architecture enables stable regulation with ultra-low ESR ceramic capacitors and supports fast transient response under dynamic load conditions.

It delivers precise 2.8V output via factory-trimmed feedback, operates across –40°C to +85°C, and features active current limiting (400mA typical) and thermal shutdown with 20°C hysteresis-ensuring robust protection during overload or elevated ambient conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.8V ±2% initial accuracy ensures stable core logic or sensor biasing without external resistor networks.
Max Output Current	300mA guaranteed minimum supports baseband processors, camera ISPs, or RF front-end ICs in compact portable designs.
Dropout Voltage	150mV @ 150mA (V_OUT=2.8V) enables operation down to 2.95V input-critical for single-cell Li-ion battery systems.
PSRR	75dB @ 1kHz suppresses switching noise from PMICs or DC-DC converters feeding adjacent analog/RF blocks.
Quiescent Current	36µA typical enables >100-hour standby in always-on sensor nodes or Bluetooth LE peripherals.
Output Capacitor	Stable with 0.47µF X5R/X7R ceramic-reduces BOM count and PCB area versus tantalum or larger MLCC solutions.
EN Pin Logic	High-active enable (V_ENH ≥1.2V) simplifies interface with GPIOs or power sequencers without level-shifting.

Pinout & Package

PT7M8218B12CE is packaged in SC70-5L (JEDEC MO-203B/AA) and SOT23-5L (JEDEC MO-178C/AA) outlines-both 5-pin surface-mount packages with identical pin assignment and thermal performance optimized for space-constrained mobile PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1 - VIN	Input supply rail	Accepts 1.7–5.5V; requires local 0.47µF ceramic bypass to GND for stability and noise rejection.
2 - GND	Power ground reference	Low-impedance return path for both input and output currents; must be connected directly to system ground plane.
3 - EN	Enable control input	High-active logic: drives regulator ON when ≥1.2V; draws ≤0.1µA in both states for minimal leakage impact.
4 - NC	No-connect terminal	Internally unconnected; recommended to tie to GND for mechanical stability and EMI reduction.
5 - VOUT	Regulated output	Delivers 2.8V ±2% with auto-discharge path (50Ω typical) when EN = LOW-prevents floating voltage on powered-down rails.

Key Features

Feature	Design Value
Ultra-low quiescent current	36µA typical enables multi-day battery life in always-on wearable sensors and IoT edge nodes.
Auto output discharge	50Ω internal discharge path ensures rapid VOUT decay (<1ms) upon disable-critical for safe power sequencing.
Thermal shutdown with hysteresis	170°C trip point with 20°C hysteresis prevents thermal cycling during sustained high-load operation.
Low-noise output	60µV_RMS (10Hz–100kHz) supports noise-sensitive analog circuits like ADC references or RF synthesizers.
Current limit protection	400mA typical foldback limit protects against short-circuit faults while minimizing thermal stress on PCB traces.

Applications

Mobile Baseband Power

Digital Camera Sensor Bias

Use Scenario: Powering 2.8V I/O banks of 3G/4G baseband processors in smartphones and feature phones.

IC Role / Device Role / Timing Role: Primary LDO supplying clean, regulated voltage to processor I/O interfaces with tight voltage tolerance.

Use Value: ±2% output accuracy and 75dB PSRR prevent signal integrity degradation and timing margin loss in high-speed serial links.

Use Scenario: Providing stable 2.8V bias to CMOS image sensor analog front-ends in compact digital still/video cameras.

IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupling sensor pixel arrays and column amplifiers.

Use Value: 60µV_RMS noise floor and fast load transient response minimize fixed-pattern noise and image artifacts.

Bluetooth Audio SoC Core

Portable Medical Sensor Node

Use Scenario: Supplying 2.8V core voltage to Bluetooth audio SoCs in wireless earbuds and hearing aids.

IC Role / Device Role / Timing Role: High-efficiency, low-quiescent-current regulator enabling extended playback time from small Li-ion cells.

Use Value: 36µA ISS and 150mV dropout extend usable battery range by >15% compared to legacy 3.3V LDOs in same footprint.

Use Scenario: Powering ultra-low-power biomedical sensors (e.g., pulse oximeters, ECG front-ends) in wearable patches.

IC Role / Device Role / Timing Role: Precision, low-drift voltage source for analog signal conditioning and ADC reference.

Use Value: ±100ppm/°C temperature coefficient ensures <±0.3% output drift over –40°C to +85°C operating range.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Torex XC6206P282MR	280mA max output, 120mV dropout @150mA, no EN pin, 50µA IQ	Lacks enable control and auto-discharge; suitable only for always-on rails	Select when board space is constrained and enable sequencing is not required.
Richtek RT9193-28GB	300mA output, 200mV dropout @150mA, 65dB PSRR @1kHz, 50µA IQ	Lower PSRR and higher dropout reduce noise immunity in RF-rich environments	Prefer for cost-sensitive consumer audio where 75dB PSRR is non-critical.

Compared with XC6206P282MR and RT9193-28GB, PT7M8218B12CE uniquely combines high PSRR (75dB), auto-discharge, and EN control in a 5-pin SC70/SOT23 package-making it optimal for sequenced, noise-sensitive portable power domains.

Availability

PT7M8218B12CE is available at Aetrix Electronics and suitable for mobile baseband power, digital camera sensor bias, Bluetooth audio SoC core, and portable medical sensor node applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for PT7M8218B12CE 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 analog and mixed-signal ICs for communications, computing, and consumer electronics before its 2016 acquisition.

The PT7M8218 series targets portable electronics requiring ultra-low-noise, high-PSRR LDOs with minimal external components-optimized for space- and power-constrained RF, imaging, and audio subsystems.

FAQ

What is the maximum input voltage rating for PT7M8218B12CE?

The absolute maximum input voltage is +6.0V per the datasheet's Maximum Ratings table. Continuous operation above 5.5V violates recommended operating conditions and risks permanent damage due to overstress on internal P-MOSFET and protection circuitry.

Does PT7M8218B12CE require an input capacitor?

Yes-a 0.47µF X5R/X7R ceramic capacitor is required between VIN and GND, placed as close as possible to pins 1 and 2. This stabilizes the input rail, suppresses high-frequency noise, and prevents oscillation during load transients.

Can PT7M8218B12CE operate with a 1.0µF output capacitor?

No-the device is characterized and guaranteed stable only with 0.47µF ceramic output capacitance. Larger values may cause phase margin degradation and instability, especially under light loads or wide temperature ranges.

Is the NC pin (Pin 4) electrically isolated inside the die?

Yes-Pin 4 is internally unconnected. The datasheet explicitly states "This pin is better to be connected to the GND, but leaving it open is also acceptable," confirming no internal bond wire or circuit connection exists to this terminal.

PT7M8218B12CE Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

Packaging:: Bulk

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):: 50 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:: SC-70-5

PT7M8218B12CE FAQ

1.How can I place an order for PT7M8218B12CE through Aetrix?

Please submit a Request for Quotation (RFQ) for PT7M8218B12CE 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 PT7M8218B12CE reliable?

The price and inventory of PT7M8218B12CE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M8218B12CE is usually 5 days.

3.What payment methods are accepted for PT7M8218B12CE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M8218B12CE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PT7M8218B12CE?

PT7M8218B12CE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PT7M8218B12CE 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 PT7M8218B12CE?

For technical support, including PT7M8218B12CE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M8218B12CE requirements.

6.How does Aetrix verify that PT7M8218B12CE is sourced from the original manufacturer or authorized distributors?

All PT7M8218B12CE 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 PT7M8218B12CE meets industry standards.

7.What is the process for return or replacement of PT7M8218B12CE?

All PT7M8218B12CE units undergo pre-shipment inspection (PSI). If there is an issue with PT7M8218B12CE, 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 PT7M8218B12CE part is unused and in its original packaging.

Return procedure for PT7M8218B12CE:

1.Submit a request within 90 days.

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

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