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Diodes Incorporated PT7M8218B11CE
- Part No.:
- PT7M8218B11CE
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
PT7M8218B11CE.pdf
- Description:
- IC REG LINEAR 1.1V 300MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,718
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Product details
Overview
PT7M8218B11CE 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 electronics requiring stable, low-noise supply rails.
For engineers reviewing the PT7M8218B11CE datasheet, PT7M8218B11CE pinout, PT7M8218B11CE application, or PT7M8218B11CE equivalent, this LDO delivers verified performance in mobile RF front-ends, camera sensor biasing, and audio codec power domains where low quiescent current (36µA), auto output discharge, and SC70-5L/SOT23-5L footprint compatibility are critical selection criteria.
Technical Context
The PT7M8218B11CE integrates a P-channel MOSFET pass element, internal reference, error amplifier with phase compensation, and EN-controlled shutdown logic. Its stability with 0.47µF X5R/X7R ceramic capacitors eliminates need for external compensation networks.
Thermal shutdown activates at 170°C with 20°C hysteresis; current limit is 400mA typical with short-circuit current of 40mA. EN pin is high-active (VENH ≥1.2V), enabling precise system-level power sequencing in multi-rail architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85V ±2% - factory-trimmed for precision biasing of RF ICs and image sensors without external feedback. |
| Max Output Current | 300mA - sufficient to power baseband processors, PMIC sub-regulators, or dual-core microcontrollers in compact handhelds. |
| Dropout Voltage | 150mV @ 150mA (VOUT=2.85V) - enables operation down to VIN=3.0V, supporting single-cell Li-ion (3.0–4.2V) input range. |
| PSRR | 75dB @ 1kHz - suppresses switching noise from DC/DC converters feeding adjacent analog blocks like ADCs or PLLs. |
| Quiescent Current | 36µA - minimizes standby power loss in always-on subsystems such as Bluetooth LE radios or real-time clocks. |
| Operating Temp | −40°C to +85°C - qualified for consumer and industrial portable equipment operating across ambient extremes. |
| Capacitor Support | Stable with 0.47µF ceramic (X5R/X7R) - reduces BOM count and PCB area vs. larger tantalum or electrolytic solutions. |
Pinout & Package
PT7M8218B11CE is available in SC70-5L (JEDEC MO-203B/AA) and SOT23-5L (JEDEC MO-178C/AA) packages - both 5-pin surface-mount outlines with identical pin assignment and thermal pad omitted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Input Supply | Accepts 1.7–5.5V; requires local 0.47µF ceramic bypass to GND for EMI suppression and transient response. |
| 2 - GND | Ground Reference | Primary return path for load current and internal circuitry; must be low-impedance connection to system ground plane. |
| 3 - EN | Enable Control | High-active digital input (1.2–5.5V); pulls regulator into ultra-low 0.05µA standby when driven low. |
| 4 - NC | No Connect | Internally unconnected; recommended to tie to GND for mechanical stability and noise immunity. |
| 5 - VOUT | Regulated Output | Delivers 2.85V ±2%; requires 0.47µF ceramic capacitor to GND within 2mm for stability and ripple rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Auto Output Discharge | Internal 50Ω discharge path activates on EN deassertion - prevents floating VOUT during power-down sequencing. |
| Low-Noise Operation | 60µVrms output noise (10Hz–100kHz) - suitable for powering precision analog circuits without additional filtering. |
| Thermal Shutdown Protection | 170°C trip point with 20°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Current Limit Protection | 400mA foldback limit - maintains safe junction temperature while allowing brief peak loads beyond 300mA nominal. |
| High Accuracy Trim | ±2% initial output tolerance - eliminates need for post-assembly calibration in battery-powered devices. |
Applications
| Mobile RF Front-End | Digital Camera Sensor Bias |
|---|---|
|
Use Scenario: Powering GSM/CDMA PA drivers and LNA stages in dual-mode handsets. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO supplying clean 2.85V bias to RF transceivers. Use Value: 75dB PSRR at 1kHz rejects switching noise from nearby buck converters, preserving EVM and ACLR performance. |
Use Scenario: Providing regulated bias to CMOS image sensor analog front-end and ADC reference. IC Role / Device Role / Timing Role: Precision 2.85V source with <±2% tolerance and 60µVrms noise. Use Value: Enables >10-bit effective resolution in image capture by minimizing supply-induced quantization error. |
| Portable Audio Codec | Bluetooth LE SoC Core Supply |
|
Use Scenario: Supplying VDDIO and AVDD rails for stereo audio codecs in MP3 players and wireless headsets. IC Role / Device Role / Timing Role: Low-quiescent-current (36µA) LDO enabling long battery life in always-listening mode. Use Value: Auto output discharge ensures rapid VDDIO ramp-down during sleep transitions, preventing latch-up in I²S interfaces. |
Use Scenario: Powering 32-bit ARM Cortex-M0+ core and BLE radio in wearable fitness trackers. IC Role / Device Role / Timing Role: Enable-controlled 2.85V supply synchronized with host MCU wake/sleep states. Use Value: 0.05µA standby current extends coin-cell battery life to >12 months in intermittent-sensing applications. |
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 | 280mV dropout @ 100mA; 2.8V output; no EN pin; 25µA IQ | Lacks enable control and auto-discharge; limited to always-on use cases | Select when board space is constrained and sequencing is not required. |
| Richtek RT9193-28GB | 200mV dropout @ 300mA; 2.8V output; 50µA IQ; EN pin included | Higher dropout and quiescent current; same SC70-5L package | Choose if higher thermal margin is needed under full-load conditions at elevated ambient. |
Compared with XC6206P282MR and RT9193-28GB, PT7M8218B11CE offers the lowest combination of dropout (150mV), PSRR (75dB), and standby current (0.05µA), making it optimal for battery-constrained, noise-sensitive RF and imaging subsystems.
Availability
PT7M8218B11CE is available at Aetrix Electronics and suitable for mobile phones, digital still cameras, and Bluetooth LE wearables requiring stable component supply with consistent parametric performance across production lots.
Supply support for PT7M8218B11CE 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 PT7M8218 series targets portable battery-powered systems needing compact, low-noise, enable-controlled LDOs - emphasizing PSRR, accuracy, and ceramic-capacitor compatibility over legacy tantalum-dependent designs.
FAQ
What is the guaranteed minimum output current for PT7M8218B11CE?
The device guarantees 300mA continuous output current under all operating conditions specified in the datasheet, including worst-case input voltage (VIN = VOUT + 1.0V), temperature (−40°C to +85°C), and load regulation limits. This rating is validated with 0.47µF ceramic output capacitance and proper PCB layout per JEDEC MO-203B/AA thermal guidelines.
Does PT7M8218B11CE require an external resistor divider for output voltage setting?
No. PT7M8218B11CE has a factory-trimmed fixed 2.85V output; no external resistors are needed or supported. The "B11" suffix explicitly denotes the 2.85V variant (per Table 1 in the datasheet), and the internal feedback network is laser-trimmed during wafer test to achieve ±2% initial accuracy.
Can PT7M8218B11CE operate with input voltages below 1.7V?
No. The absolute minimum input voltage is 1.7V as defined in Recommended Operating Conditions. Below this threshold, regulation fails and output voltage collapses. At VIN = 1.7V and VOUT = 2.85V, the device cannot sustain regulation due to insufficient headroom - the minimum functional VIN is VOUT + dropout voltage (≥2.85V + 0.15V = 3.0V).
Is the NC pin (Pin 4) electrically isolated or internally tied?
Pin 4 is confirmed as No Connect - not bonded to any internal node. The datasheet explicitly states it is "better to be connected to GND" for mechanical stability and EMI reduction, but leaving it open does not affect functionality. No internal connection exists; routing it to GND improves thermal dissipation margin in SC70-5L packages.
PT7M8218B11CE 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):
- 1.1V
- 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:
- SC-70-5
PT7M8218B11CE FAQ
1.How can I place an order for PT7M8218B11CE through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M8218B11CE 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 PT7M8218B11CE reliable?
The price and inventory of PT7M8218B11CE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M8218B11CE is usually 5 days.
3.What payment methods are accepted for PT7M8218B11CE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M8218B11CE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT7M8218B11CE?
PT7M8218B11CE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT7M8218B11CE 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 PT7M8218B11CE?
For technical support, including PT7M8218B11CE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M8218B11CE requirements.
6.How does Aetrix verify that PT7M8218B11CE is sourced from the original manufacturer or authorized distributors?
All PT7M8218B11CE 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 PT7M8218B11CE meets industry standards.
7.What is the process for return or replacement of PT7M8218B11CE?
All PT7M8218B11CE units undergo pre-shipment inspection (PSI). If there is an issue with PT7M8218B11CE, 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 PT7M8218B11CE part is unused and in its original packaging.
Return procedure for PT7M8218B11CE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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