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Diodes Incorporated DMP1081UCB4-7
- Part No.:
- DMP1081UCB4-7
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- 4-UFBGA, WLBGA
- Datasheet:
-
DMP1081UCB4-7.pdf
- Description:
- MOSFET P-CH 12V 3A U-WLB1010-4
- Quantity:
- Payment:
- Shipping:
Inventory:5,255
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Product details
Overview
DMP1081UCB4-7 from Diodes Incorporated is a P-channel enhancement-mode MOSFET in a U-WLB1010-4 chip-scale package, rated for -12V VDSS, 0.065Ω RDS(ON) at VGS = -4.5V, and -3.3A continuous drain current at +25°C; it serves as a low-loss load switch or battery protection device in space-constrained portable electronics.
For engineers reviewing the DMP1081UCB4-7 datasheet, DMP1081UCB4-7 pinout, DMP1081UCB4-7 application, or DMP1081UCB4-7 equivalent, key selection criteria include gate threshold voltage (-0.5V typ.), ultra-low Qg (2.5nC), CSP footprint (1.0mm × 1.0mm), thermal resistance (RθJA = 150°C/W), and ESD rating (3kV HBM).
Technical Context
This MOSFET employs LD-MOS technology to achieve a low figure of merit (RDS(ON) × Qg), enabling high-efficiency power switching with minimal conduction and switching losses. Its -0.5V typical VGS(TH) allows direct interface with low-voltage logic controllers.
The U-WLB1010-4 package integrates source, drain, and gate terminals on a 1.0mm × 1.0mm die with 0.62mm height and 0.5mm pitch, supporting high-density PCB layouts while maintaining thermal performance via copper pad exposure under the die.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | -12V - maximum blocking voltage for battery-side protection circuits |
| RDS(ON) | 0.065Ω @ VGS = -4.5V - enables <100mW conduction loss at 1.3A load current |
| Qg | 2.5nC - supports fast turn-on with minimal gate drive energy and reduced switching loss |
| VGS(TH) | -0.5V typ. - ensures reliable turn-on from 1.8V/2.5V I/O without level-shifting |
| ID (cont.) | -3.3A @ TA = +25°C - sufficient for USB-C PD load switches and smart battery packs |
| ESD HBM | 3kV - protects gate integrity during board assembly and handling |
| Package | U-WLB1010-4 - 1.0mm × 1.0mm CSP footprint with exposed copper for thermal relief |
Pinout & Package
U-WLB1010-4 is a 4-terminal wafer-level chip-scale package with bottom-side solderable terminals. The device uses a standard S-D-G-D configuration: Source (S) and Drain (D) are duplicated for current sharing and thermal spreading, while Gate (G) is isolated on one corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| S (Terminal 1 & 4) | Source | Dual-source terminals reduce effective RDS(ON) and improve thermal dissipation via parallel copper paths |
| D (Terminal 2 & 3) | Drain | Dual-drain layout minimizes current crowding and enhances pulse current capability (IDM = 20A) |
| G (Terminal 3 corner) | Gate | Isolated gate terminal with low capacitance (Ciss = 213pF) enables stable high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Low RDS(ON) × Qg FoM | 0.16 Ω·nC - optimizes trade-off between conduction loss and switching loss in DC-DC and load-switching topologies |
| Ultra-low VGS(TH) | -0.5V typ. - eliminates need for external gate bias in single-supply systems powered by Li-ion batteries (2.5–4.2V) |
| 0.62mm profile | Enables stacking with thin batteries or placement under connectors in ultra-thin wearables and hearing aids |
| JEDEC-qualified reliability | Qualified per AEC-Q standards for high-reliability industrial and consumer applications, not automotive-grade |
Applications
| Battery Protection Circuit | USB-C Load Switch |
|---|---|
Use Scenario: Reverse-current and overcurrent protection in single-cell Li-ion battery packs for Bluetooth earbuds. IC Role / Device Role / Timing Role: High-side P-channel MOSFET acting as bidirectional blocking switch controlled by battery management IC. Use Value: 0.065Ω RDS(ON) limits voltage drop to <85mV at 1.3A, preserving battery runtime and thermal margin. | Use Scenario: Hot-swap control for USB-C power delivery ports in portable monitors. IC Role / Device Role / Timing Role: Low-impedance load switch enabling inrush current limiting and fault isolation. Use Value: 2.5nC Qg allows clean 10μs turn-on with minimal gate driver overhead and no overshoot. |
| Smartphone Power Path | Wireless Charging Receiver |
Use Scenario: Power path management between wireless charging input and system rail in compact smartphones. IC Role / Device Role / Timing Role: P-channel switch isolating charging circuitry during system sleep to prevent leakage. Use Value: -0.5V VGS(TH) ensures full enhancement using baseband processor's 1.8V GPIO, eliminating level shifters. | Use Scenario: Secondary-side synchronous rectification and output regulation in Qi-compliant receivers. IC Role / Device Role / Timing Role: Low-RDS(ON) switch controlling regulated 5V output to battery charging IC. Use Value: 1.0mm × 1.0mm footprint fits within tight coil-to-PCB clearance constraints (<1.2mm height budget). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar P-channel load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN10H015LQ-7 | RDS(ON) = 0.015Ω @ -4.5V but larger 2mm × 2mm SO-8 package; higher Qg (12nC) | Requires more PCB area and higher gate drive energy; better suited for high-current (>5A) industrial loads | Select when lower RDS(ON) outweighs size and switching speed requirements |
| AO3401 | SO-23 package (2.9mm × 1.6mm); RDS(ON) = 0.085Ω @ -4.5V; Qg = 3.5nC; no JEDEC qualification | Higher thermal resistance (RθJA ≈ 200°C/W); less suitable for sustained >2A operation in sealed enclosures | Select for cost-sensitive consumer designs where JEDEC reliability is not mandated |
Compared with DMN10H015LQ-7 and AO3401, DMP1081UCB4-7 uniquely balances ultra-small footprint, low gate charge, and JEDEC-qualified reliability-making it optimal for space- and efficiency-critical battery-powered devices where thermal headroom is limited.
Availability
DMP1081UCB4-7 is available at Aetrix Electronics and suitable for battery management systems, portable medical sensors, and USB-C accessory power control requiring stable component supply across production lifecycles.
Supply support for DMP1081UCB4-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and communications markets.
DMP1081UCB4-7 belongs to Diodes' LD-MOS portfolio, engineered specifically for ultra-compact, high-efficiency load switching in battery-powered portable electronics where thermal density and gate drive simplicity are critical.
FAQ
What is the maximum continuous drain current at +70°C ambient?
The DMP1081UCB4-7 supports -2.7A continuous drain current at TA = +70°C when mounted on FR-4 with 1 inch² copper, per Note 5 in the datasheet. This derating reflects thermal limitations of the U-WLB1010-4 package under natural convection conditions.
Does this MOSFET require a gate resistor for stability?
A gate resistor is recommended to dampen ringing during switching transitions. With Ciss = 213pF and Qgd = 0.6nC, a 10Ω–22Ω series resistor suppresses oscillation when driven by typical 1.8V/3.3V GPIOs, especially in high-frequency load-switching applications.
Can DMP1081UCB4-7 be used in automotive applications?
No-DMP1081UCB4-7 is not AEC-Q101 qualified. Diodes offers automotive-grade equivalents (e.g., DMP1081UCB4Q) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation; this part is intended for industrial and consumer applications only.
How is thermal performance affected by PCB layout?
Thermal resistance drops from RθJA = 150°C/W (minimum pad) to 80.3°C/W with optimized 1 inch² 2oz copper, per Note 7. The U-WLB1010-4's bottom-side thermal pad must be fully soldered to an internal ground plane or thermal via array to realize rated power dissipation (0.82W).
DMP1081UCB4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-UFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- P-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 12 V
- Current - Continuous Drain (Id) @ 25°C:
- 3.3A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 0.9V, 4.5V
- Rds On (Max) @ Id, Vgs:
- 10Ohm @ 100mA, 0.9V
- Vgs(th) (Max) @ Id:
- 650mV @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 5 nC @ 4.5 V
- Vgs (Max):
- -6V
- Input Capacitance (Ciss) (Max) @ Vds:
- 350 pF @ 6 V
- FET Feature:
- -
- Power Dissipation (Max):
- 820mW (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-WLB1010-4
DMP1081UCB4-7 FAQ
1.How can I place an order for DMP1081UCB4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMP1081UCB4-7 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 DMP1081UCB4-7 reliable?
The price and inventory of DMP1081UCB4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMP1081UCB4-7 is usually 5 days.
3.What payment methods are accepted for DMP1081UCB4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMP1081UCB4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMP1081UCB4-7?
DMP1081UCB4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMP1081UCB4-7 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 DMP1081UCB4-7?
For technical support, including DMP1081UCB4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMP1081UCB4-7 requirements.
6.How does Aetrix verify that DMP1081UCB4-7 is sourced from the original manufacturer or authorized distributors?
All DMP1081UCB4-7 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 DMP1081UCB4-7 meets industry standards.
7.What is the process for return or replacement of DMP1081UCB4-7?
All DMP1081UCB4-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMP1081UCB4-7, 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 DMP1081UCB4-7 part is unused and in its original packaging.
Return procedure for DMP1081UCB4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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