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

Diodes Incorporated PT7M8202B12TA5EX

Name: PT7M8202B12TA5EX
Brand: Diodes Incorporated
SKU: PT7M8202B12TA5EX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PT7M8202B12TA5EX

Manufacturer:: Diodes Incorporated

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

Package:: SC-74A, SOT-753

Datasheet:: PT7M8202B12TA5EX.pdf

Description:: IC REG LINEAR 1.2V 300MA SOT23-5

Quantity:: RFQ Add To RFQ list

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Inventory:3,501

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Product details

Overview

PT7M8202B12TA5EX from Pericom Semiconductor is a high-accuracy, ultra-low-noise LDO regulator delivering 300mA output current with 270mV dropout at 300mA (for 3.3V output), 30µVRMS output noise at 1.2V, and 80dB PSRR at 1kHz-designed for RF-sensitive portable devices including GSM/CDMA mobile phones and digital cameras.

For engineers reviewing the PT7M8202B12TA5EX datasheet, PT7M8202B12TA5EX pinout, PT7M8202B12TA5EX application, or PT7M8202B12TA5EX equivalent, key selection criteria include low-noise performance under 30µVRMS, EN-controlled standby current of 0.1µA, SOT23-5L package compatibility, and BP-pin-enabled noise bypassing for RF subsystems.

Technical Context

The PT7M8202B12TA5EX uses a P-channel MOSFET pass element with internal phase compensation optimized for stability with 1µF ceramic input/output capacitors. Its error amplifier compares a resistive-divided output voltage against a precision internal reference to maintain regulation across load, line, and temperature variations.

It integrates dedicated circuitry for quick start-up (~50µs), thermal shutdown at 170°C with 40°C hysteresis, and current-limit protection activating at 450mA. The BP pin accepts a 22nF capacitor to shunt reference noise, directly reducing output voltage ripple in RF power rails.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	1.2V fixed (factory-trimmed); stable ±2% over load/line/temp
Max Output Current	300mA continuous; supports peak loads in portable audio/video ICs
Dropout Voltage	270mV @ 300mA (for 3.3V variant); enables operation from single Li-ion cell down to ~2.0V input
Output Noise	30µVRMS (10Hz–100kHz); meets stringent RF front-end supply requirements
PSRR	80dB @ 1kHz; suppresses switching noise from adjacent DC/DC converters
Standby Current	0.1µA @ EN = low; extends battery life in sleep-mode handheld devices
Operating Range	1.8V–5.5V input; supports wide-battery and multi-rail system integration

Pinout & Package

PT7M8202B12TA5EX is housed in a lead-free, RoHS-compliant SOT23-5L (TA5) package per JEDEC MO-178C/AA, measuring 2.9mm × 1.6mm × 1.15mm with 0.95mm pitch.

Pin/Terminal	Circuit Role	Design Meaning
1 - VIN	Input Supply	Accepts 1.8–5.5V; requires local 1µF X5R/X7R ceramic bypass to GND
2 - GND	Ground Reference	Common return for input, output, and BP paths; critical for noise control
3 - EN	Enable Control	Active-high logic (V_ENH ≥ 1.5V); controls 0.1µA standby mode
4 - BP	Noise Bypass	Connects 22nF capacitor to GND to reduce reference noise and improve PSRR
5 - VOUT	Regulated Output	Delivers stable 1.2V; requires local 1µF ceramic capacitor to GND

Key Features

Feature	Design Value
Ultra-Low Output Noise	30µVRMS at 1.2V enables clean power for RF transceivers and ADCs
Quick Start-Up Time	~50µs enables fast wake-up in burst-mode wireless systems
Bypass Pin (BP)	Dedicated 22nF-capacitor node reduces output noise without external op-amp
Thermal Shutdown Protection	170°C trip with 40°C hysteresis prevents damage during sustained overload
Ceramic Capacitor Compatibility	Stable with 1µF X5R/X7R ceramics on IN/OUT-no ESR requirements or tantalum dependency

Applications

Mobile Phone RF Power Rail

Digital Camera Image Sensor Bias

Use Scenario: Supplies low-noise bias to GSM/CDMA power amplifier modules and RF transceivers.

IC Role / Device Role / Timing Role: Primary LDO for RF signal chain; replaces noisier switching regulators in Tx/Rx paths.

Use Value: 30µVRMS noise and 80dB PSRR prevent reciprocal mixing and SNR degradation in cellular receivers.

Use Scenario: Powers CMOS image sensor analog core and ADC reference in compact digital still/video cameras.

IC Role / Device Role / Timing Role: Low-noise analog supply rail; synchronized with sensor frame timing via EN pin.

Use Value: Sub-100ppm/°C output drift and <0.2%/V line regulation preserve color fidelity and dynamic range.

PDA Baseband Processor Core

MP3 Player Audio DAC Supply

Use Scenario: Delivers regulated 1.2V to baseband SoC cores in legacy PDAs requiring low quiescent current.

IC Role / Device Role / Timing Role: Always-on core LDO; enabled only during active processing cycles via EN pin.

Use Value: 0.1µA standby current extends battery runtime between user interactions in intermittent-use devices.

Use Scenario: Provides clean 1.2V supply to stereo DAC and headphone amplifier in portable audio players.

IC Role / Device Role / Timing Role: Dedicated analog LDO; decoupled from noisy digital supplies using BP pin filtering.

Use Value: 30µVRMS noise ensures >95dB THD+N in 16-bit audio playback without post-regulation LC filtering.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Torex XC6206P122MR	1.2V fixed, 300mA, 250mV dropout, but no BP pin; 45µVRMS noise	Lacks BP noise-bypass capability; unsuitable for RF front-end use	Select when cost sensitivity outweighs RF noise requirements
Ricoh RP108L121B-TR	1.2V fixed, 300mA, 200mV dropout, 25µVRMS, but requires 2.2µF output cap	Lower dropout and noise, but incompatible with 1µF ceramic-only design	Prefer where board space allows larger output capacitance and lower dropout is critical

Compared with XC6206P122MR and RP108L121B-TR, the PT7M8202B12TA5EX uniquely balances ultra-low noise, BP-enabled filtering, and strict 1µF ceramic compatibility-making it optimal for space-constrained RF designs where reference noise coupling must be minimized at layout level.

Availability

PT7M8202B12TA5EX is available at Aetrix Electronics and suitable for mobile phone RF power rails, digital camera image sensor bias, and portable audio DAC supplies requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for PT7M8202B12TA5EX 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 consumer electronics before its 2016 acquisition.

The PT7M8202 series was developed specifically for portable RF applications demanding ultra-low-noise, fast transient response, and minimal external components-targeting GSM, CDMA, and IMT-2000 handset designs.

FAQ

What is the function of the BP pin on PT7M8202B12TA5EX?

The BP (Bypass) pin connects to a 22nF capacitor tied to GND and provides a low-impedance path for reference voltage noise, reducing output voltage noise by up to 50%. PCB layout requires a direct, short trace between BP and GND to preserve this benefit-any added inductance degrades noise suppression.

Can PT7M8202B12TA5EX operate with only 1µF ceramic capacitors?

Yes-it is internally compensated for stability with 1µF X5R/X7R ceramic capacitors on both input and output, eliminating need for higher-ESR tantalum or aluminum electrolytic types. This simplifies BOM, reduces footprint, and improves reliability in portable devices subject to mechanical shock.

What is the minimum input voltage required for 1.2V output regulation?

With a 270mV dropout at full 300mA load, the minimum input voltage is 1.47V. However, the absolute operating minimum is 1.8V per datasheet specifications-ensuring guaranteed regulation, PSRR, and thermal margin across temperature and process variation.

How does the EN pin behave during power sequencing?

The EN pin is active-high with V_ENH ≥ 1.5V and V_ENL ≤ 0.3V. It must not float: an unconnected EN increases standby current due to internal inverter leakage. Tie to VIN through a resistor or drive actively to ensure predictable startup/shutdown timing in multi-rail systems.

PT7M8202B12TA5EX Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

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

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):: -

Current - Output:: 300mA

Current - Quiescent (Iq):: 100 µA

Current - Supply (Max):: -

PSRR:: 80dB (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

PT7M8202B12TA5EX FAQ

1.How can I place an order for PT7M8202B12TA5EX through Aetrix?

Please submit a Request for Quotation (RFQ) for PT7M8202B12TA5EX 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 PT7M8202B12TA5EX reliable?

The price and inventory of PT7M8202B12TA5EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M8202B12TA5EX is usually 5 days.

3.What payment methods are accepted for PT7M8202B12TA5EX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M8202B12TA5EX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PT7M8202B12TA5EX?

PT7M8202B12TA5EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PT7M8202B12TA5EX 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 PT7M8202B12TA5EX?

For technical support, including PT7M8202B12TA5EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M8202B12TA5EX requirements.

6.How does Aetrix verify that PT7M8202B12TA5EX is sourced from the original manufacturer or authorized distributors?

All PT7M8202B12TA5EX 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 PT7M8202B12TA5EX meets industry standards.

7.What is the process for return or replacement of PT7M8202B12TA5EX?

All PT7M8202B12TA5EX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M8202B12TA5EX, 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 PT7M8202B12TA5EX part is unused and in its original packaging.

Return procedure for PT7M8202B12TA5EX:

1.Submit a request within 90 days.

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

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