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Diodes Incorporated PT7M8202B33TA5EX
- Part No.:
- PT7M8202B33TA5EX
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
PT7M8202B33TA5EX.pdf
- Description:
- IC REG LINEAR 3.3V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,639
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Product details
Overview
PT7M8202B33TA5EX from Pericom Semiconductor is a high-accuracy, ultra-low-noise LDO regulator with 3.3V fixed output, 300mA output current capability, 270mV dropout at full load, 30µVRMS output noise (10Hz–100kHz), and 80dB PSRR at 1kHz - designed for RF power supply rails in mobile transceivers and portable wireless systems.
For engineers reviewing the PT7M8202B33TA5EX datasheet, PT7M8202B33TA5EX pinout, PT7M8202B33TA5EX application, or PT7M8202B33TA5EX equivalent, key selection criteria include low-noise performance under RF load transients, EN-controlled standby mode with 0.1µA quiescent current, BP-pin noise bypass support, ceramic capacitor compatibility, and SOT23-5L package thermal limits.
Technical Context
The PT7M8202B33TA5EX uses a P-channel MOSFET pass element with internal phase compensation optimized for stability with 1µF X5R/X7R ceramic input/output capacitors. Its error amplifier compares a resistive-divided output against a precision bandgap reference to maintain regulation across ±100ppm/℃ temperature drift.
It integrates dedicated circuitry for quick start-up (~50µs), current-limit protection (450mA typical), thermal shutdown at 170°C with 40°C hysteresis, and an independent BP pin enabling 22nF capacitor-based noise filtering that reduces output RMS noise by >50% versus standard configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% over load/temperature - ensures stable core voltage for 3.3V logic and RF ICs without external feedback. |
| Dropout Voltage | 270mV @ 300mA - enables operation from 3.57V input, supporting single-cell Li-ion (3.6V nominal) or dual-cell alkaline supplies. |
| Output Noise | 30µVRMS (10Hz–100kHz) - meets stringent RF LNA/VCO supply noise requirements without additional LC filtering. |
| PSRR | 80dB @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Standby Current | 0.1µA @ EN = low - extends battery life in sleep modes of portable devices with periodic wake-up cycles. |
| Operating Range | 1.8V–5.5V input, –40°C to +85°C ambient - supports wide-input industrial and consumer battery-powered applications. |
Pinout & Package
SOT23-5L (TA5) package: 2.9mm × 1.6mm × 1.15mm body, JEDEC MO-178C/AA compliant, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Input Supply Rail | Accepts 1.8–5.5V; requires local 1µF X5R/X7R ceramic decoupling to GND for stability and transient response. |
| 2 - GND | Analog/Digital Ground Reference | Common return path for input/output capacitors and BP bypass; must be low-impedance PCB plane connection. |
| 3 - EN | Enable Control Input | Active-high logic (VENH ≥1.5V); controls regulator on/off state; floating input increases supply current. |
| 4 - BP | Noise Bypass Terminal | Connects to GND via 22nF capacitor to reduce output noise; trace length must be minimized to preserve filtering efficacy. |
| 5 - VOUT | Regulated Output | Delivers 3.3V ±2% at up to 300mA; requires local 1µF X5R/X7R ceramic capacitor to GND for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Noise Regulation | 30µVRMS output noise with BP pin bypass - enables direct powering of sensitive RF front-end components. |
| Fast Start-Up Time | Typical 50µs turn-on delay - supports rapid wake-up sequences in battery-operated communication devices. |
| Ceramic Capacitor Compatibility | Stable with 1µF X5R/X7R input/output - eliminates need for costly tantalum or polymer capacitors. |
| Thermal & Overcurrent Protection | 170°C shutdown with 40°C hysteresis and 450mA current limit - prevents damage during short-circuit or overload events. |
| Low Standby Power | 0.1µA shutdown current - extends shelf life and operational runtime in always-on IoT sensor nodes. |
Applications
| Mobile Transceiver Power | GSM/CDMA Baseband Supply |
|---|---|
Use Scenario: Powering RF power amplifiers and low-noise amplifiers in dual-mode GSM/CDMA handsets. IC Role / Device Role / Timing Role: Primary LDO supplying clean 3.3V bias to PA driver stages and LNA signal chains. Use Value: 30µVRMS noise and 80dB PSRR prevent AM-to-PM distortion and adjacent channel leakage in transmit paths. |
Use Scenario: Providing regulated 3.3V to baseband processors and analog front-ends in legacy cellular modules. IC Role / Device Role / Timing Role: Secondary LDO delivering low-noise supply for ADC reference buffers and DAC output stages. Use Value: ±2% output accuracy and <±100ppm/℃ drift ensure consistent signal conversion performance across temperature. |
| Digital Camera Image Sensor Bias | Portable Audio Codec Supply |
Use Scenario: Biasing CMOS image sensors and ISP cores in compact digital still/video cameras. IC Role / Device Role / Timing Role: Dedicated LDO for analog pixel array and column ADC reference rails. Use Value: 50µs start-up allows synchronization with frame capture timing; 270mV dropout preserves headroom from 3.6V Li-ion. |
Use Scenario: Supplying 3.3V to stereo audio codecs in MP3 players and voice recorders. IC Role / Device Role / Timing Role: Low-noise LDO for DAC output filters and headphone amplifier bias rails. Use Value: 0.1µA standby current minimizes battery drain during pause/play transitions; ceramic cap compatibility reduces BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P332MR | 300mA, 3.3V fixed, 350mV dropout @300mA, no BP pin, 45µVRMS noise | Lacks BP noise-bypass capability; lower PSRR (70dB @1kHz) | Preferred where board space is constrained and RF noise sensitivity is moderate. |
| Richtek RT9193-33GB | 300mA, 3.3V fixed, 250mV dropout @300mA, 50µVRMS noise, no BP pin | Better dropout but higher noise; no dedicated noise-reduction terminal | Selected when lowest possible dropout is prioritized over RF-grade noise suppression. |
Compared with XC6206P332MR and RT9193-33GB, the PT7M8202B33TA5EX uniquely delivers 30µVRMS noise with BP-pin support - making it the only option among the three qualified for direct LNA/VCO biasing in high-performance RF designs.
Availability
PT7M8202B33TA5EX is available at Aetrix Electronics and suitable for mobile transceivers, portable imaging systems, battery-powered audio devices, and wireless sensor nodes requiring stable component supply with guaranteed long-term availability.
Supply support for PT7M8202B33TA5EX 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 PT7M8202 series was developed specifically for RF-sensitive portable electronics - emphasizing ultra-low noise, fast transient response, and ceramic-capacitor stability in space-constrained SOT23-5L packaging.
FAQ
What is the recommended BP capacitor value and placement for optimal noise reduction?
A 22nF ceramic capacitor must be placed directly between the BP pin and GND with minimal trace length - ideally ≤2mm - to achieve the specified 30µVRMS output noise. Longer traces degrade high-frequency bypass effectiveness and may increase output ripple above 100kHz.
Can the PT7M8202B33TA5EX operate stably with 0.47µF output capacitance?
No - the device requires ≥1µF X5R/X7R ceramic output capacitance for guaranteed stability per the datasheet. Using 0.47µF risks oscillation under load transients due to insufficient phase margin from reduced ESR and capacitance.
Does the EN pin require a pull-up or pull-down resistor in normal operation?
EN is CMOS-compatible and does not require external biasing if driven actively high (≥1.5V) or low (≤0.3V). Floating EN increases supply current; a 100kΩ pull-down is recommended only in systems where the control signal may be undriven during power-up.
How does thermal shutdown hysteresis affect recovery behavior after overheating?
After junction temperature exceeds 170°C, the regulator shuts down and remains off until temperature falls to ~130°C (170°C − 40°C hysteresis), preventing repeated cycling during sustained overload - ensuring safe cooldown before resuming regulation.
PT7M8202B33TA5EX 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 300mA
- 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
PT7M8202B33TA5EX FAQ
1.How can I place an order for PT7M8202B33TA5EX through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M8202B33TA5EX 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 PT7M8202B33TA5EX reliable?
The price and inventory of PT7M8202B33TA5EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M8202B33TA5EX is usually 5 days.
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Once your PT7M8202B33TA5EX 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 PT7M8202B33TA5EX?
For technical support, including PT7M8202B33TA5EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M8202B33TA5EX requirements.
6.How does Aetrix verify that PT7M8202B33TA5EX is sourced from the original manufacturer or authorized distributors?
All PT7M8202B33TA5EX 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 PT7M8202B33TA5EX meets industry standards.
7.What is the process for return or replacement of PT7M8202B33TA5EX?
All PT7M8202B33TA5EX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M8202B33TA5EX, 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 PT7M8202B33TA5EX part is unused and in its original packaging.
Return procedure for PT7M8202B33TA5EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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