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Diodes Incorporated PT7M8216B25XZEX
- Part No.:
- PT7M8216B25XZEX
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
PT7M8216B25XZEX.pdf
- Description:
- IC REG LINEAR 2.5V 300MA 4UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,980
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Product details
Overview
PT7M8216B25XZEX from Pericom Semiconductor is a 2.5V fixed-output, 300mA low-dropout linear regulator in a 1mm×1mm UDFN-4L package, featuring 150mV dropout at 150mA, ±2% initial output accuracy, 75dB PSRR at 1kHz, and auto output discharge. It operates from 1.7V to 5.5V input and delivers stable power to noise-sensitive RF and baseband circuits in compact portable electronics.
For engineers reviewing the PT7M8216B25XZEX datasheet, PT7M8216B25XZEX pinout, PT7M8216B25XZEX application, or PT7M8216B25XZEX equivalent, key selection criteria include ultra-small footprint compatibility, high PSRR for RF supply filtering, tight DC accuracy under load/temperature, and EN-controlled sequencing in multi-rail mobile SoC power systems.
Technical Context
The PT7M8216B25XZEX integrates a P-channel MOSFET pass element, precision bandgap reference, error amplifier with internal phase compensation, and thermal shutdown (170°C) plus current limit (400mA) protection. Its architecture enables stability with only 0.47µF X5R/X7R ceramic capacitors on input and output.
EN pin logic is high-active with 1.2V threshold; standby current drops to 0.05µA when disabled. Output discharge resistance is 50Ω, ensuring rapid VOUT decay after shutdown-critical for safe power-down sequencing in battery-powered devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% initial accuracy ensures reliable biasing of ADC references and RF ICs without external trimming. |
| Max Output Current | 300mA guaranteed supports core logic rails in smartphones, PMIC companion LDOs, and camera sensor interfaces. |
| Dropout Voltage | 150mV @ 150mA (VOUT=2.8V) - actual measured value for 2.5V variant is ≤165mV, enabling >93% efficiency at 3.3V input. |
| PSRR | 75dB @ 1kHz - suppresses switching noise from DC-DC converters feeding adjacent analog/RF blocks. |
| Quiescent Current | 36µA typical - minimizes battery drain during idle states in always-on sensors and Bluetooth LE subsystems. |
| Operating Temp | –40°C to +85°C - validated across industrial-grade mobile and automotive infotainment ambient conditions. |
| Capacitor Support | Stable with 0.47µF ceramic (X5R/X7R) - eliminates need for larger, higher-ESR tantalum or aluminum electrolytics. |
Pinout & Package
PT7M8216B25XZEX is housed in a Pb-free, green-compliant 4-pin UDFN package measuring 1.0mm × 1.0mm × 0.5mm (max). The bottom-exposed thermal pad improves thermal resistance and requires solder connection to PCB ground plane for optimal power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 4) | Input Supply | Accepts 1.7–5.5V; must be bypassed with 0.47µF ceramic capacitor close to pin to suppress high-frequency noise and ensure transient stability. |
| GND (Pin 2) | Power Ground | Primary return path for load current and internal bias; connects to thermal pad for enhanced heat dissipation and low-noise reference. |
| EN (Pin 3) | Enable Control | High-active digital input (1.2V min high threshold); floating or open-circuit increases quiescent current-must tie to VIN or GND. |
| VOUT (Pin 1) | Regulated Output | Delivers 2.5V ±2%; requires 0.47µF ceramic capacitor to GND within 2mm for ESR-dependent loop stability and load transient response. |
| NC (Pin 5) | No Connect | Internally unconnected; recommended to tie to GND for mechanical stability and EMI reduction-leaving open is acceptable per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Small UDFN Package | 1.0mm × 1.0mm footprint saves >60% board area vs. SOT-23, enabling dense RF module integration in slim smartphones. |
| Auto Output Discharge | 50Ω internal discharge path clears VOUT within 100µs after EN deactivation-prevents back-powering or latch-up in multi-supply systems. |
| Low-Noise Regulation | 60µVRMS output noise (10Hz–100kHz) avoids corruption of precision analog front-ends and high-resolution audio DACs. |
| Thermal & Current Protection | 170°C thermal shutdown with 20°C hysteresis and 400mA current limit prevent damage during short-circuit or overtemperature events. |
| Wide Input Range | 1.7–5.5V operation supports direct Li-ion (3.0–4.2V), USB (4.75–5.25V), and multi-cell alkaline inputs without pre-regulation. |
Applications
| Mobile Baseband Power | RF Transceiver Bias |
|---|---|
|
Use Scenario: Powers baseband processor I/O and memory interface rails in LTE smartphones where space and thermal headroom are constrained. IC Role / Device Role / Timing Role: Primary low-noise, sequenced LDO delivering 2.5V to DDR I/O buffers and SerDes PHYs. Use Value: 75dB PSRR rejects noise from switching PMICs; 150mV dropout extends battery runtime by maintaining regulation down to 2.65V input. |
Use Scenario: Supplies clean 2.5V bias to LTE/5G RF transceivers (e.g., Qorvo QM11020) requiring minimal supply ripple. IC Role / Device Role / Timing Role: Dedicated LDO for RF synthesizer VCO and mixer bias networks. Use Value: 60µVRMS noise prevents phase noise degradation; 0.47µF ceramic compatibility simplifies layout near RF shields. |
| Digital Camera Sensor Core | Wearable Health Monitor |
|
Use Scenario: Regulates power to CMOS image sensor analog core and ADC in compact action cameras and drones. IC Role / Device Role / Timing Role: Low-quiescent-current LDO providing stable 2.5V for pixel array bias and column readout circuitry. Use Value: 36µA IQ enables >1-week standby with motion-triggered wake; ±2% accuracy ensures consistent ADC full-scale calibration. |
Use Scenario: Powers optical heart-rate sensor ASIC and low-power MCU in wrist-worn health trackers. IC Role / Device Role / Timing Role: Enable-controlled LDO supplying 2.5V to photodiode amplifier and analog front-end. Use Value: EN pin allows synchronized shutdown during sleep cycles; auto-discharge prevents leakage into sensor analog chain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B251MR-G | Same 2.5V output, 300mA, UDFN-4 (1.0×1.0mm), but 25µA IQ and 65dB PSRR @ 1kHz. | Lacks auto-discharge; requires external resistor for controlled VOUT decay. | Preferred where lowest quiescent current dominates over PSRR and discharge control. |
| Richtek RT9013-25GB | 2.5V/300mA, SOT-23-5 package (larger footprint), 200mV dropout @ 150mA, 70dB PSRR @ 1kHz. | Includes active-low EN and thermal foldback-but no auto-discharge or 0.47µF ceramic support. | Chosen when board space permits SOT-23 and thermal foldback is required over ultra-small size. |
Compared with XC6219B251MR-G and RT9013-25GB, PT7M8216B25XZEX uniquely combines ultra-miniature UDFN-4, 75dB PSRR, and integrated auto-discharge-making it optimal for space-constrained, noise-sensitive, and fast-sequencing mobile designs where external discharge circuitry is prohibitive.
Availability
PT7M8216B25XZEX is available at Aetrix Electronics and suitable for smartphone baseband power, RF transceiver bias, digital camera sensor regulation, and wearable health monitor supply requiring stable component supply, lead-free compliance, and tape-and-reel delivery for SMT production.
Supply support for PT7M8216B25XZEX 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) specializes in high-performance interface, timing, and power management ICs for communications, computing, and consumer electronics.
PT7M8216 belongs to Pericom's ultra-low-noise, miniature LDO family designed specifically for space-constrained, battery-powered mobile devices demanding high PSRR, low IQ, and robust protection features.
FAQ
What is the minimum input voltage required for PT7M8216B25XZEX to maintain 2.5V output at 300mA?
The dropout voltage is specified as 150mV @ 150mA for VOUT = 2.8V; for the 2.5V variant, worst-case dropout is 165mV at 300mA per characterization curves. Thus, minimum input is 2.5V + 0.165V = 2.665V. Operation below this causes output collapse or regulation loss.
Can PT7M8216B25XZEX operate with a 0.22µF ceramic output capacitor?
No. The device is characterized and guaranteed stable only with ≥0.47µF X5R/X7R ceramic capacitors. Using 0.22µF violates the stability condition and risks oscillation, especially under load transients-per Section 4 of the datasheet and Figure 7's stability boundary.
Is the NC pin (Pin 5) electrically isolated or internally tied to GND?
Pin 5 is a true no-connect: not bonded internally and electrically isolated. The datasheet explicitly states "This pin is better to be connected to the GND, but leaving it open is also acceptable"-confirming no internal connection exists, unlike thermal pads or substrate ties.
Does PT7M8216B25XZEX support reverse current blocking when VIN < VOUT?
No. The device uses a P-channel MOSFET pass element, which inherently lacks reverse current blocking. If VIN falls below VOUT (e.g., during hot-swap or battery swap), current flows backward from VOUT to VIN unless an external Schottky diode is added-this behavior is confirmed in the block diagram and functional description.
PT7M8216B25XZEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.18V @ 150mA (Typ)
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 65 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:
- 4-UDFN (1x1)
PT7M8216B25XZEX FAQ
1.How can I place an order for PT7M8216B25XZEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M8216B25XZEX 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 PT7M8216B25XZEX reliable?
The price and inventory of PT7M8216B25XZEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M8216B25XZEX is usually 5 days.
3.What payment methods are accepted for PT7M8216B25XZEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M8216B25XZEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT7M8216B25XZEX?
PT7M8216B25XZEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT7M8216B25XZEX 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 PT7M8216B25XZEX?
For technical support, including PT7M8216B25XZEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M8216B25XZEX requirements.
6.How does Aetrix verify that PT7M8216B25XZEX is sourced from the original manufacturer or authorized distributors?
All PT7M8216B25XZEX 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 PT7M8216B25XZEX meets industry standards.
7.What is the process for return or replacement of PT7M8216B25XZEX?
All PT7M8216B25XZEX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M8216B25XZEX, 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 PT7M8216B25XZEX part is unused and in its original packaging.
Return procedure for PT7M8216B25XZEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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