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NXP Semiconductors PMXB350UPEZ
- Part No.:
- PMXB350UPEZ
- Manufacturer:
- NXP Semiconductors
- Category:
- FETs, MOSFETs
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
PMXB350UPEZ.pdf
- Description:
- NEXPERIA PMXB350UPE - 20 V, P-CH
- Quantity:
- Payment:
- Shipping:
Inventory:665,986
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Product details
Overview
PMXB350UPEZ from Nexperia is a P-channel enhancement-mode Trench MOSFET in a DFN1010D-3 (SOT1215) package, rated for −20 V drain-source voltage, 350 mΩ RDS(on) at VGS = −4.5 V and ID = −1.2 A, and featuring an exposed drain pad for thermal conduction. It serves as a high-side load switch in portable power management systems.
For engineers reviewing the PMXB350UPEZ datasheet, PMXB350UPEZ pinout, PMXB350UPEZ application, or PMXB350UPEZ equivalent, key selection criteria include its ultra-small 1.1 × 1.0 × 0.37 mm footprint, −1.2 A continuous drain current at 25 °C ambient, ESD rating of 1 kV HBM, and suitability for battery-powered LED drivers and DC-DC converter synchronous rectification.
Technical Context
This P-channel MOSFET uses Trench technology to achieve low on-resistance in an ultra-thin leadless package. Its gate threshold voltage ranges from −0.45 V to −0.95 V, enabling logic-level drive compatibility with 1.8 V and 2.5 V microcontrollers.
The device features dual drain terminals (Pins 3 and 4) connected to an exposed thermal pad, delivering Rth(j-sp) = 17–22 K/W and supporting up to 5.68 W total power dissipation when soldered to a 6 cm² copper pad on FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | −20 V maximum - supports input rails up to 20 V in high-side switching without breakdown |
| RDS(on) | 350 mΩ typical at VGS = −4.5 V - enables <1.2 A continuous load with <0.5 W conduction loss at 25 °C |
| ID | −1.2 A continuous at Tamb = 25 °C - suitable for compact portable device power switches |
| VGS(th) | −0.7 V typical - ensures turn-on with low-voltage GPIOs (e.g., 1.8 V logic with margin) |
| QG(tot) | 1.25–2.3 nC - enables fast switching with low gate drive power in DC-DC applications |
| Rth(j-sp) | 17–22 K/W - allows efficient heat transfer to PCB via exposed drain pad |
| ESD HBM | 1 kV - provides robust handling during assembly without additional protection circuitry |
Pinout & Package
DFN1010D-3 (SOT1215) package: leadless, ultra-thin plastic outline measuring 1.1 × 1.0 × 0.37 mm, with exposed drain pad for thermal performance and mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | G | Gate terminal - accepts logic-level control signals; requires no external level-shifting for 1.8–4.5 V drive |
| 2 | S | Source terminal - connects to system VIN or battery positive in high-side configuration |
| 3 & 4 | D | Drain terminals - both electrically tied to exposed thermal pad; provide low-inductance path to ground/return and primary thermal interface |
Key Features
| Feature | Design Value |
|---|---|
| Trench MOSFET architecture | Delivers 350 mΩ RDS(on) in 1.0 mm × 1.1 mm footprint - maximizes power density for space-constrained designs |
| Exposed drain pad | Reduces thermal resistance to 17 K/W junction-to-solder-point - sustains higher continuous current without derating |
| Ultra-thin 0.37 mm profile | Enables use in slim portable devices (e.g., wearables, hearing aids) where Z-height is critical |
| 1 kV HBM ESD rating | Eliminates need for external ESD protection diodes in handheld product front-end stages |
Applications
| High-Side Load Switch | Portable LED Driver |
|---|---|
Use Scenario: Powering USB-C peripheral detection circuitry or sensor modules only when active. IC Role / Device Role / Timing Role: High-side switch controlling VBAT delivery to downstream circuitry; turned on/off by MCU GPIO. Use Value: Minimizes quiescent current leakage (<1 µA off-state) and enables rapid enable/disable with <3 ns turn-on delay. | Use Scenario: Driving white LEDs in Bluetooth earbuds with adjustable brightness via PWM. IC Role / Device Role / Timing Role: Constant-current sink switch in boost converter feedback path or direct PWM-controlled current path. Use Value: Low RDS(on) reduces voltage drop across switch, preserving headroom for LED forward voltage and improving efficiency at 20–100 mA loads. |
| DC-DC Converter Sync Rectifier | Battery Charging Path Control |
Use Scenario: Replacing Schottky diode in buck converter output stage for improved efficiency. IC Role / Device Role / Timing Role: Synchronous rectifier controlled by converter controller's gate driver signal. Use Value: 350 mΩ RDS(on) cuts conduction loss by >60% vs. 0.4 V Schottky at 1 A, raising conversion efficiency by 2–3% at light-to-moderate loads. | Use Scenario: Isolating charging IC from battery during system sleep or fault conditions. IC Role / Device Role / Timing Role: Reverse-polarity and overvoltage protection switch placed between charger output and battery terminal. Use Value: −20 V VDS rating accommodates 2-cell Li-ion (8.4 V max) with safety margin; source-connected to battery ensures safe blocking during charger disconnect. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar P-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN2011LFG-7 | −20 V VDS, 250 mΩ RDS(on) at −4.5 V, 1.4 A ID, same DFN1010D-3 package | Lower RDS(on) and higher current rating - better for higher-power LED or load-switch applications | Select DMN2011LFG-7 when ≥15% lower conduction loss is required and board layout allows identical footprint. |
| PMZB350UN,215 | −20 V VDS, 380 mΩ RDS(on) at −4.5 V, 1.0 A ID, same DFN1010D-3 package | Slightly higher RDS(on) and lower current - cost-optimized alternative with identical mounting and thermal behavior | Choose PMZB350UN,215 where marginal efficiency loss is acceptable and BOM cost reduction is prioritized. |
Compared with PMXB350UPEZ, DMN2011LFG-7 delivers lower conduction loss at higher currents but shares identical thermal interface and PCB layout; PMZB350UN,215 trades 30 mΩ higher RDS(on) for reduced unit cost while maintaining full pin and package compatibility.
Availability
PMXB350UPEZ is available at Aetrix Electronics and suitable for high-side load switching, portable LED driving, DC-DC converter synchronous rectification, and battery charging path control requiring stable component supply and long-term industrial availability.
Supply support for PMXB350UPEZ 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for consumer, industrial, and communications markets.
The PMXB350UPEZ belongs to Nexperia's TrenchMOS portfolio, engineered specifically for space- and power-constrained portable electronics requiring ultra-small, thermally efficient P-channel switches with logic-level gate drive capability.
FAQ
What is the maximum continuous drain current for PMXB350UPEZ at 100 °C ambient temperature?
The PMXB350UPEZ supports −1.0 A continuous drain current at Tamb = 100 °C, as specified in Table 5 (Limiting values). This derating reflects thermal limits under standard FR4 PCB mounting with single-sided copper and tin plating. At 25 °C ambient, the rating increases to −1.2 A, and peak pulse current reaches −5 A for ≤10 µs pulses.
Does PMXB350UPEZ require a gate resistor for stable operation in high-frequency switching?
No external gate resistor is required for basic on/off operation of PMXB350UPEZ, as its gate resistance is internally 0.8 Ω and total gate charge is only 1.25–2.3 nC. However, a small series resistor (e.g., 2–10 Ω) is recommended in high-frequency DC-DC sync rectifier applications to damp ringing and control dV/dt, especially when driven by fast controllers.
Can PMXB350UPEZ be used in automotive applications?
No - PMXB350UPEZ is not automotive-qualified. The datasheet explicitly states "Non-automotive qualified products" in Section 15.3, and it lacks AEC-Q101 qualification, extended temperature testing, or automotive-specific reliability data. It is intended for commercial portable and industrial equipment only.
What is the thermal resistance from junction to ambient for PMXB350UPEZ on a standard FR4 PCB?
On a standard FR4 PCB (single-sided copper, tin-plated, no enhanced thermal pad), the PMXB350UPEZ has Rth(j-a) = 303–348 K/W per Table 6. When mounted with a 6 cm² drain pad, this improves to 116–134 K/W - a critical design consideration for sustained current operation above 500 mA.
How is the marking code '11 10 00' interpreted on PMXB350UPEZ devices?
The marking code '11 10 00' on PMXB350UPEZ corresponds to binary-encoded date and vendor information per Figure 1: '11' = vendor code, '10' = year code (2010), '00' = week code (week 00). This matches the January 2014 datasheet revision and confirms traceability to Nexperia's manufacturing batch records.
PMXB350UPEZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 3-XDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- FET Type:
- P-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 20 V
- Current - Continuous Drain (Id) @ 25°C:
- 1.2A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 1.2V, 4.5V
- Rds On (Max) @ Id, Vgs:
- 447mOhm @ 1.2A, 4.5V
- Vgs(th) (Max) @ Id:
- 950mV @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 2.3 nC @ 4.5 V
- Vgs (Max):
- ±8V
- Input Capacitance (Ciss) (Max) @ Vds:
- 116 pF @ 10 V
- FET Feature:
- -
- Power Dissipation (Max):
- 360mW (Ta), 5.68W (Tc)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1010D-3
PMXB350UPEZ FAQ
1.How can I place an order for PMXB350UPEZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PMXB350UPEZ 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 PMXB350UPEZ reliable?
The price and inventory of PMXB350UPEZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMXB350UPEZ is usually 5 days.
3.What payment methods are accepted for PMXB350UPEZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMXB350UPEZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMXB350UPEZ?
PMXB350UPEZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMXB350UPEZ 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 PMXB350UPEZ?
For technical support, including PMXB350UPEZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMXB350UPEZ requirements.
6.How does Aetrix verify that PMXB350UPEZ is sourced from the original manufacturer or authorized distributors?
All PMXB350UPEZ 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 PMXB350UPEZ meets industry standards.
7.What is the process for return or replacement of PMXB350UPEZ?
All PMXB350UPEZ units undergo pre-shipment inspection (PSI). If there is an issue with PMXB350UPEZ, 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 PMXB350UPEZ part is unused and in its original packaging.
Return procedure for PMXB350UPEZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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