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

Diodes Incorporated PT7M8218B11TAE

Name: PT7M8218B11TAE
Brand: Diodes Incorporated
SKU: PT7M8218B11TAE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PT7M8218B11TAE

Manufacturer:: Diodes Incorporated

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

Package:: SC-74A, SOT-753

Datasheet:: PT7M8218B11TAE.pdf

Description:: IC REG LINEAR 1.1V 300MA SOT23-5

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PT7M8218B11TAE from Pericom Semiconductor is a 300mA, high-PSRR low-dropout linear regulator with 2.85V fixed output voltage, ±2% initial accuracy, 150mV dropout at 150mA, and 75dB PSRR at 1kHz-designed for power-sensitive portable RF and digital baseband circuits in mobile handsets.

For engineers reviewing the PT7M8218B11TAE datasheet, PT7M8218B11TAE pinout, PT7M8218B11TAE application, or PT7M8218B11TAE equivalent, key selection criteria include guaranteed 300mA load capability with 0.47µF ceramic output capacitance, auto-discharge functionality, thermal shutdown at 170°C, and EN pin compatibility with 1.2V logic-high threshold.

Technical Context

The PT7M8218B11TAE integrates a P-channel MOSFET pass element, internal reference, error amplifier with phase compensation, and protection circuitry-including current limit (400mA typ.) and thermal shutdown (170°C with 20°C hysteresis). Its architecture enables stable regulation with ultra-low ESR ceramic capacitors.

It operates across 1.7V–5.5V input range and delivers 2.85V output with ±100ppm/°C temperature coefficient and 60µV_RMS output noise (10Hz–100kHz). The EN pin supports active-high control with sub-1µA standby current and 50Ω internal discharge path when disabled.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.85V ±2% - factory-trimmed for precision biasing of RF transceivers and baseband ICs without external feedback.
Max Output Current	300mA guaranteed - sufficient to power dual-core application processors or multi-band RF front-end modules.
Dropout Voltage	150mV @150mA (V_OUT=2.85V) - enables operation from single-cell Li-ion (3.0V min) with >2.7V system rail margin.
PSRR	75dB @1kHz - suppresses switching noise from PMIC DC-DC converters feeding adjacent analog/RF blocks.
Quiescent Current	36µA typ. - minimizes battery drain during idle/sleep states in always-on sensor or connectivity subsystems.
Output Capacitor	Stable with 0.47µF X5R/X7R ceramic - eliminates need for bulky tantalum or aluminum electrolytic capacitors in space-constrained layouts.
EN Logic Threshold	V_ENH = 1.2V min - compatible with 1.8V/2.8V I/O domains without level-shifting in multi-rail mobile SoC designs.

Pinout & Package

PT7M8218B11TAE is packaged in RoHS-compliant, lead-free SOT23-5L (JEDEC MO-178C/AA) - 2.9mm × 1.6mm × 1.1mm body with 0.95mm pitch - optimized for high-density portable 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 transient response.
2 - GND	Power ground reference	Low-impedance return path for all internal circuits; must be connected directly to PCB ground plane.
3 - EN	Enable control input	Active-high logic interface; drives internal P-MOSFET gate; floating state increases quiescent current.
4 - NC	No-connect terminal	Internally unconnected; recommended to tie to GND for mechanical stability and EMI reduction.
5 - VOUT	Regulated output	Delivers 2.85V ±2%; requires 0.47µF ceramic capacitor to GND within 2mm of pin for PSRR and load-step performance.

Key Features

Feature	Design Value
Auto output discharge	50Ω internal discharge path ensures rapid VOUT decay (<1ms) upon EN deactivation-critical for safe power sequencing in multi-rail systems.
High PSRR at 1kHz	75dB attenuation of ripple from noisy DC-DC sources-preserves SNR in RF receivers and ADC reference supplies.
Thermal shutdown with hysteresis	170°C trip point + 20°C hysteresis prevents thermal cycling during sustained overload-enables robust operation in sealed enclosures.
Low-noise output	60µV_RMS (10Hz–100kHz) - meets stringent noise requirements for PLL VCO supplies and audio codec AVDD rails.
Ultra-low ESR capacitor support	Stable with 0.47µF X5R/X7R ceramics - reduces BOM count and board area vs. legacy LDOs requiring ≥10µF tantalum.

Applications

Mobile RF Transceiver Power

Digital Baseband Core Supply

Use Scenario: Powering GSM/CDMA/IMT2000 RF transceiver ICs in dual-mode handsets where supply noise directly impacts EVM and adjacent channel leakage.

IC Role / Device Role / Timing Role: Primary LDO delivering clean 2.85V VCC_RF rail with high PSRR to suppress PMIC switching noise.

Use Value: 75dB PSRR at 1kHz maintains <−35dBc EVM under 217Hz envelope modulation, meeting 3GPP TS 25.101 conformance.

Use Scenario: Supplying core voltage to ARM9/ARM11 application processors during active mode in PDA and early smartphones.

IC Role / Device Role / Timing Role: Low-quiescent-current (36µA) LDO providing stable 2.85V for processor I/O and memory interfaces.

Use Value: 150mV dropout enables >2.7V rail retention from aging 3.7V Li-ion cells, sustaining full CPU clock speed down to 3.0V battery voltage.

Portable Camera Module Bias

MP3 Player Audio Codec Supply

Use Scenario: Biasing CMOS image sensor analog front-end and ISP core in digital still/video cameras.

IC Role / Device Role / Timing Role: Low-noise (60µV_RMS) LDO powering sensor analog supply (AVDD) and ISP core logic (DVDD).

Use Value: Sub-100ppm/°C drift ensures consistent white balance calibration across −40°C to +85°C operating range.

Use Scenario: Delivering regulated 2.85V to stereo audio DAC/ADC and headphone amplifier in MP3 players.

IC Role / Device Role / Timing Role: High-accuracy (±2%) LDO supplying AVDD for low-distortion audio signal chain.

Use Value: ±2% output tolerance guarantees THD+N <0.01% at full-scale output, preserving CD-quality playback fidelity.

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, 200mV dropout @100mA, no EN pin, 45µA IQ	Lacks enable control and auto-discharge; limited to always-on rails	Select when board space is critical and EN functionality is unnecessary.
Richtek RT9193-28GB	300mA output, 250mV dropout @150mA, 70dB PSRR @1kHz, 50µA IQ	Lower PSRR and higher dropout reduce noise margin in RF-sensitive designs	Prefer for cost-sensitive consumer audio where 70dB PSRR suffices.

Compared with XC6206P282MR and RT9193-28GB, PT7M8218B11TAE uniquely combines 300mA drive, 150mV dropout, 75dB PSRR, and EN-controlled auto-discharge-making it optimal for RF-critical, battery-powered mobile subsystems requiring precise sequencing and low-noise operation.

Availability

PT7M8218B11TAE is available at Aetrix Electronics and suitable for mobile handset RF power, portable camera module bias, MP3 player audio codec supply, and digital baseband core supply requiring stable component supply across production lifecycles.

Supply support for PT7M8218B11TAE 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 timing, interface, and power management ICs for communications and computing markets before its 2017 acquisition.

The PT7M8218 belongs to Pericom's precision LDO family targeting portable wireless devices-engineered for ultra-low noise, high PSRR, and minimal footprint in space- and power-constrained RF subsystems.

FAQ

What is the exact output voltage tolerance and temperature drift of PT7M8218B11TAE?

The PT7M8218B11TAE has ±2% initial output voltage accuracy at 25°C and ±100ppm/°C temperature coefficient over −40°C to +85°C. Measured output voltage variation remains within ±2.5% across full temperature and load range per datasheet Section 2 DC Electrical Characteristics.

Can PT7M8218B11TAE operate with input voltage below 1.7V?

No. The absolute minimum input voltage is 1.7V per Absolute Maximum Ratings and Recommended Operating Conditions. Operation below this threshold risks regulation loss, increased dropout, or undefined behavior-verified by test data showing VOUT collapse below VIN=1.65V in Figure 2.

Is the NC pin (Pin 4) required to be grounded?

Pin 4 is internally unconnected but recommended to be tied to GND per datasheet Application Note and Mechanical Information section. Leaving it floating may increase susceptibility to EMI and slightly elevate quiescent current due to parasitic coupling into the EN circuitry.

Does PT7M8218B11TAE support ceramic capacitors smaller than 0.47µF?

No. Stability is only guaranteed with ≥0.47µF X5R/X7R ceramic output capacitors, as confirmed by Phase Margin measurements and transient response testing in Figures 6–7. Using 0.22µF or smaller causes ringing and potential oscillation under load step conditions.

PT7M8218B11TAE Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SC-74A, SOT-753

Packaging:: Bulk

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 1.1V

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:: SOT-23-5

PT7M8218B11TAE FAQ

1.How can I place an order for PT7M8218B11TAE through Aetrix?

Please submit a Request for Quotation (RFQ) for PT7M8218B11TAE 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 PT7M8218B11TAE reliable?

The price and inventory of PT7M8218B11TAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M8218B11TAE is usually 5 days.

3.What payment methods are accepted for PT7M8218B11TAE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M8218B11TAE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PT7M8218B11TAE?

PT7M8218B11TAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PT7M8218B11TAE 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 PT7M8218B11TAE?

For technical support, including PT7M8218B11TAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M8218B11TAE requirements.

6.How does Aetrix verify that PT7M8218B11TAE is sourced from the original manufacturer or authorized distributors?

All PT7M8218B11TAE 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 PT7M8218B11TAE meets industry standards.

7.What is the process for return or replacement of PT7M8218B11TAE?

All PT7M8218B11TAE units undergo pre-shipment inspection (PSI). If there is an issue with PT7M8218B11TAE, 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 PT7M8218B11TAE part is unused and in its original packaging.

Return procedure for PT7M8218B11TAE:

1.Submit a request within 90 days.

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

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