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Diodes Incorporated PT7M8218B09TAE
- Part No.:
- PT7M8218B09TAE
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
PT7M8218B09TAE.pdf
- Description:
- IC REG LINEAR 0.9V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,725
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Product details
Overview
PT7M8218B09TAE from Pericom Semiconductor is a 300mA, high-PSRR low-dropout regulator with 0.9V fixed output, 150mV dropout at 150mA (VOUT=2.8V), ±2% initial accuracy, and 75dB PSRR at 1kHz - designed for power-sensitive portable electronics requiring stable, low-noise biasing of baseband processors and RF front-ends.
For engineers reviewing the PT7M8218B09TAE datasheet, PT7M8218B09TAE pinout, PT7M8218B09TAE application, or PT7M8218B09TAE 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-controlled sequencing in space-constrained SC70-5L/SOT23-5L footprints.
Technical Context
The PT7M8218B09TAE integrates a P-channel MOSFET pass element, internal reference voltage source, error amplifier with phase compensation, and ON/OFF control circuitry - enabling stable regulation with low-ESR ceramic capacitors without external compensation. Its architecture supports fast transient response and tight line/load regulation across temperature.
It operates over –40°C to +85°C ambient, features active-high enable (VENH ≥1.2V), auto-output discharge via 50Ω internal path when disabled, and dual protection mechanisms: current limit (400mA typ) and thermal shutdown (170°C with 20°C hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.9V ±2% initial accuracy - ensures precise core biasing for ultra-low-voltage logic and memory interfaces. |
| Max Output Current | 300mA guaranteed - sufficient for powering baseband ICs, audio codecs, and sensor hubs in handheld devices. |
| Dropout Voltage | 150mV @150mA (for VOUT ≥2.8V) - enables operation down to VIN = 1.05V while maintaining regulation. |
| PSRR | 75dB @1kHz - suppresses switching noise from adjacent DC/DC converters in mixed-power-rail systems. |
| Quiescent Current | 36µA typical - minimizes standby power loss in battery-backed always-on subsystems. |
| Input Voltage Range | 1.7V to 5.5V - compatible with single-cell Li-ion, Li-polymer, and multi-cell alkaline/NiMH supplies. |
| Output Capacitor | Stable with 0.47µF X5R/X7R ceramic - eliminates need for large tantalum or electrolytic capacitors, saving board area. |
Pinout & Package
PT7M8218B09TAE is available in both SC70-5L (JEDEC MO-203B/AA) and SOT23-5L (JEDEC MO-178C/AA) packages - compact, surface-mount, lead-free, and RoHS-compliant footprints optimized for high-density portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Power input supply rail | Accepts 1.7–5.5V; requires local 0.47µF ceramic bypass to GND for stability and noise filtering. |
| 2 - GND | Analog/digital ground reference | Low-impedance return path for regulator current and error amplifier; must be connected directly to system ground plane. |
| 3 - EN | Active-high enable control | Drives internal pass transistor; logic-high ≥1.2V enables regulation, logic-low ≤0.3V disables output and activates auto-discharge. |
| 4 - NC | No-connect terminal | Internally unconnected; recommended to tie to GND for mechanical stability and EMI reduction - floating is acceptable but not optimal. |
| 5 - VOUT | Regulated output voltage | Delivers stable 0.9V ±2%; requires 0.47µF ceramic capacitor to GND placed adjacent to pin for transient response and PSRR performance. |
Key Features
| Feature | Design Value |
|---|---|
| High PSRR (75dB @1kHz) | Rejects ripple from noisy switchers - critical for clean power to RF transceivers and ADCs. |
| Auto Output Discharge | 50Ω internal discharge path clears VOUT within microseconds after EN deactivation - prevents residual voltage from interfering with downstream power sequencing. |
| Low Dropout (150mV @150mA) | Enables efficient operation near battery end-of-life - extends usable runtime in single-cell applications. |
| ±2% Output Accuracy | Meets tight tolerance requirements for low-voltage I/O and core rails in modern SoCs and FPGAs. |
| Thermal Shutdown + Current Limit | Protects against sustained overload or ambient overheating - ensures safe operation under fault conditions without external circuitry. |
Applications
| Mobile Baseband Power | RF Front-End Biasing |
|---|---|
|
Use Scenario: Powering ARM-based baseband processors and modem subsystems in GSM/CDMA handsets. IC Role / Device Role / Timing Role: Primary LDO delivering stable 0.9V core voltage with fast load transient response during burst-mode transmission. Use Value: Maintains processor stability during high-current CPU bursts while minimizing heat generation in sealed handset enclosures. |
Use Scenario: Supplying bias voltage to power amplifiers and low-noise amplifiers in cellular front-end modules. IC Role / Device Role / Timing Role: Ultra-low-noise LDO providing clean 0.9V supply to sensitive RF analog blocks. Use Value: 75dB PSRR suppresses switching noise from PMIC DC/DC converters, preserving EVM and receiver sensitivity. |
| Digital Camera Sensor Core | Portable Audio Codec Supply |
|
Use Scenario: Regulating power for CMOS image sensor digital cores and interface logic in compact digital still/video cameras. IC Role / Device Role / Timing Role: Low-quiescent-current LDO supplying 0.9V to sensor logic during standby and active capture modes. Use Value: 36µA IQ enables >72-hour standby time on coin-cell or small Li-ion batteries without compromising startup speed. |
Use Scenario: Providing regulated 0.9V bias to stereo audio codecs in MP3 players and Bluetooth headsets. IC Role / Device Role / Timing Role: Noise-immune LDO ensuring low THD+N in audio signal chain by rejecting digital switching noise. Use Value: Stable 0.9V output with ±2% accuracy preserves DAC/ADC reference integrity and dynamic 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 XC6206P092MR | 0.9V fixed, 300mA, 120mV dropout @100mA, 65dB PSRR @1kHz, no EN pin | Lacks enable control and auto-discharge - unsuitable for sequenced power domains requiring controlled turn-off. | Select when EN functionality is unnecessary and lower cost is prioritized over sequencing flexibility. |
| Richtek RT9193-09GB | 0.9V fixed, 300mA, 200mV dropout @150mA, 70dB PSRR @1kHz, EN pin with 1.0V threshold | Higher dropout and lower PSRR reduce efficiency and noise immunity in RF-critical designs. | Choose only if footprint compatibility with SOT23-5L is required and 75dB PSRR is not mandatory. |
Compared with XC6206P092MR and RT9193-09GB, PT7M8218B09TAE uniquely combines 75dB PSRR, 150mV dropout, and auto-discharge - making it optimal for RF-sensitive, battery-constrained, and multi-rail sequenced systems where noise rejection and controlled shutdown are design-critical.
Availability
PT7M8218B09TAE is available at Aetrix Electronics and suitable for mobile baseband power, RF front-end biasing, digital camera sensor core regulation, and portable audio codec supply requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for PT7M8218B09TAE 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, computing, and consumer electronics before its 2016 acquisition.
PT7M8218 belongs to Pericom's precision LDO family targeting portable and battery-powered applications - engineered for ultra-low IQ, high PSRR, and minimal external components to meet shrinking form factor and extended runtime demands.
FAQ
What is the minimum input voltage required for PT7M8218B09TAE to maintain regulation at full 300mA load?
The minimum input voltage depends on dropout: at 300mA, typical dropout is ~200mV (extrapolated from 150mV @150mA and datasheet curves). Thus, VIN(min) ≈ 0.9V + 0.2V = 1.1V. However, the absolute minimum specified operating VIN is 1.7V - below which regulation, stability, or protection features are not guaranteed per datasheet limits.
Can PT7M8218B09TAE operate with a 0.22µF output capacitor instead of the recommended 0.47µF?
No - the device is characterized and guaranteed stable only with ≥0.47µF X5R/X7R ceramic output capacitance. Using 0.22µF risks instability, excessive overshoot/undershoot during load transients, and degraded PSRR, as confirmed by the manufacturer's stability analysis and application notes.
Is the NC pin (Pin 4) electrically isolated or internally tied to another node?
Pin 4 is a true no-connect: internally unconnected and electrically isolated from all other circuit nodes. The datasheet explicitly states "This pin is better to be connected to the GND" for mechanical and EMI reasons - confirming no internal bond or functional connection exists.
Does PT7M8218B09TAE support reverse current blocking when VIN < VOUT?
No - the device uses a P-channel MOSFET pass element, which inherently allows reverse current flow when VOUT exceeds VIN. Reverse current blocking is not implemented; external diode or ideal diode controller is required if backfeed prevention is needed in multi-rail systems.
PT7M8218B09TAE 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):
- 0.9V
- 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
PT7M8218B09TAE FAQ
1.How can I place an order for PT7M8218B09TAE through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M8218B09TAE 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 PT7M8218B09TAE reliable?
The price and inventory of PT7M8218B09TAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M8218B09TAE is usually 5 days.
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4.How is shipping managed for PT7M8218B09TAE?
PT7M8218B09TAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT7M8218B09TAE 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 PT7M8218B09TAE?
For technical support, including PT7M8218B09TAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M8218B09TAE requirements.
6.How does Aetrix verify that PT7M8218B09TAE is sourced from the original manufacturer or authorized distributors?
All PT7M8218B09TAE 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 PT7M8218B09TAE meets industry standards.
7.What is the process for return or replacement of PT7M8218B09TAE?
All PT7M8218B09TAE units undergo pre-shipment inspection (PSI). If there is an issue with PT7M8218B09TAE, 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 PT7M8218B09TAE part is unused and in its original packaging.
Return procedure for PT7M8218B09TAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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