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Diodes Incorporated DMN2991UTQ-7
- Part No.:
- DMN2991UTQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- SOT-523
- Datasheet:
-
DMN2991UTQ-7.pdf
- Description:
- MOSFET BVDSS: 8V~24V SOT523 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:2,630
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Product details
Overview
DMN2991UTQ from Diodes Incorporated is an N-channel enhancement-mode MOSFET in SOT523 package, rated for 20V VDSS, 0.3A continuous drain current at 25°C, with RDS(ON) = 3Ω @ VGS = 4.5V and gate threshold voltage ≤1.0V. It serves as a low-voltage load switch in space-constrained automotive and portable power management circuits.
For engineers reviewing the DMN2991UTQ datasheet, DMN2991UTQ pinout, DMN2991UTQ application, or DMN2991UTQ equivalent, key selection criteria include ultra-low VGS(TH), sub-1Ω typical RDS(ON) at 4.5V, AEC-Q101 qualification, SOT523 footprint compatibility, and ESD-protected gate integrity under 1.8V control.
Technical Context
This MOSFET employs planar silicon process technology optimized for low gate charge (Qg = 0.35nC) and fast switching (tD(ON) = 5.6ns), enabling high-efficiency operation in DC-DC converter synchronous rectification and battery-powered load switching. Its 1.0V max VGS(TH) ensures reliable turn-on from single-cell Li-ion or 1.8V logic rails.
The device features integrated ESD protection on the gate terminal, low input capacitance (Ciss = 21.5pF), and thermal resistance RθJA = 439°C/W on FR-4 PCB-critical for thermally isolated layouts in compact automotive modules and wearables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 20V - supports input rails up to 18V after derating, suitable for 12V automotive subsystems and USB PD auxiliary power paths |
| RDS(ON) @ VGS = 4.5V | 3Ω max - enables <100mW conduction loss at 0.18A, critical for low-power always-on circuitry |
| VGS(TH) max | 1.0V - guarantees full enhancement with 1.2V GPIO outputs, eliminating need for level shifters in MCU-driven switches |
| Qg | 0.35nC - reduces gate drive power and switching transition time, lowering dynamic losses in 1–5MHz DC-DC controllers |
| Ciss | 21.5pF - minimizes Miller effect and improves noise immunity in high-dV/dt environments like motor driver gate drivers |
| TJ range | −55°C to +150°C - validated for under-hood automotive locations and industrial edge sensor nodes without thermal throttling |
Pinout & Package
SOT523 ultra-small surface-mount package (1.60 × 1.60 × 0.55 mm), molded green compound, matte tin–annealed terminals, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G (Gate) | Control electrode | ESD-protected input accepting 0–4.5V logic; ≤1.0V threshold enables direct microcontroller interface without pull-up |
| S (Source) | Reference node | Internally connected to substrate; must be tied to system ground or low-side return path for proper channel formation |
| D (Drain) | Power output node | Carries switched load current up to 0.3A; connects to positive rail or high-side load in reverse-biased body diode configurations |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low gate threshold | VGS(TH) ≤1.0V ensures robust turn-on from 1.2V/1.8V I/O domains, reducing BOM count in mixed-voltage SoC designs |
| Low RDS(ON) at low VGS | 6Ω @ VGS = 1.8V enables efficient operation directly from LDO outputs or battery monitors without gate boosting |
| ESD-protected gate | HBM rating ≥2kV per JEDEC JS-001 - eliminates need for external gate protection in handheld and automotive infotainment modules |
| AEC-Q101 qualified | PPAP-capable production in IATF 16949 facilities - meets automotive electronics reliability requirements for body control and ADAS auxiliary functions |
Applications
| Automotive Body Control Module | USB-C Port Power Switching |
|---|---|
|
Use Scenario: Controlling LED interior lighting and window actuator enable signals in low-voltage domains of BCM ECUs. IC Role / Device Role / Timing Role: Low-side load switch isolating 12V supply from microcontroller GPIOs during sleep mode. Use Value: 1.0V VGS(TH) allows direct drive from 1.2V core logic; 0.28W power dissipation prevents thermal runaway in sealed enclosures. |
Use Scenario: Enabling/disabling VBUS power delivery to downstream USB-C peripherals in portable docking stations. IC Role / Device Role / Timing Role: High-side power switch controlled by USB PD controller's enable signal. Use Value: 3Ω RDS(ON) limits voltage drop to <0.5V at 150mA, preserving USB-C spec compliance for VBUS regulation. |
| Wearable Sensor Node Power Gating | Industrial IoT Edge Node Battery Management |
|
Use Scenario: Power-gating MEMS accelerometers and BLE radios between measurement cycles to extend coin-cell battery life. IC Role / Device Role / Timing Role: Ultra-low-leakage (IDSS ≤1μA) disconnect switch placed between battery and sensor subsystem. Use Value: Sub-1μA off-state leakage preserves >99% of battery capacity over 6-month standby, verified at −40°C to +85°C. |
Use Scenario: Isolating backup supercapacitor banks from main Li-ion packs during fault conditions in smart meter power supplies. IC Role / Device Role / Timing Role: Fast-turn-off (tF = 27.6ns) protection switch triggered by analog front-end overvoltage detection. Use Value: 0.35nC Qg enables sub-100ns response to fault signals, preventing capacitor overcharge and thermal damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel low-threshold load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN2004LK3-7 | RDS(ON) = 2.5Ω @ 4.5V, VGS(TH) = 0.7V typ, SOT-723 package (smaller footprint than SOT523) | Higher gate charge (0.45nC) and lower ID rating (0.25A) limit use in higher-current DC-DC sync rectifiers | Select when board area is constrained below 1.2mm² and gate drive voltage is stable ≥2.5V |
| AO3414 | RDS(ON) = 55mΩ @ 4.5V, VGS(TH) = 1.5V min, SOT-23 package (larger, higher thermal mass) | Not AEC-Q101 qualified; lacks ESD protection; unsuitable for automotive PPAP programs | Choose only for non-automotive consumer applications where cost outweighs qualification and reliability requirements |
Compared with DMN2991UTQ, DMN2004LK3-7 offers tighter VGS(TH) but reduced current capability and no AEC-Q101 status, while AO3414 delivers far lower RDS(ON) but fails automotive qualification and requires ≥2.5V gate drive-making DMN2991UTQ optimal for AEC-compliant, ultra-low-voltage, space-limited load switching.
Availability
DMN2991UTQ is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery systems, wearable sensor nodes, and industrial IoT edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DMN2991UTQ 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, headquartered in Plano, Texas, with design, manufacturing, and distribution operations across Asia, Europe, and North America.
The DMN2991UTQ belongs to Diodes' AEC-Q101-qualified small-signal MOSFET product line, engineered specifically for low-voltage, high-reliability load switching in automotive and portable electronics where gate drive headroom is limited.
FAQ
Is DMN2991UTQ suitable for high-frequency PWM switching above 1 MHz?
Yes-its 0.35nC total gate charge and 5.6ns turn-on delay support clean switching up to 5MHz in low-duty-cycle applications. However, thermal limits (0.28W PD on FR-4) require careful layout and current derating above 1MHz to avoid junction overheating.
Can DMN2991UTQ replace a P-channel MOSFET in high-side switching configurations?
No-it is an N-channel device requiring gate voltage above source potential. For high-side switching, it must be used with a charge pump or gate driver that provides ≥VIN + 1.0V at the gate; direct replacement of P-channel devices without level-shifting circuitry will result in incomplete turn-on.
What is the maximum safe operating area (SOA) for pulsed drain current?
Per Figure 12, the SOA supports 1.4A pulsed drain current at 10μs pulse width and 1% duty cycle. At 100μs, maximum current drops to ~0.6A; sustained DC current must remain ≤0.24A at +75°C ambient to stay within RθJA = 291°C/W thermal limit.
Does the SOT523 package support reflow soldering per J-STD-020?
Yes-the device is rated Moisture Sensitivity Level 1 and qualified for standard lead-free reflow profiles (peak 260°C). The matte tin–annealed terminals ensure reliable wetting, and the UL 94V-0 molding compound withstands repeated thermal cycling without delamination.
DMN2991UTQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 20 V
- Current - Continuous Drain (Id) @ 25°C:
- 300mA (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 1.5V, 4.5V
- Rds On (Max) @ Id, Vgs:
- 3Ohm @ 100mA, 4.5V
- Vgs(th) (Max) @ Id:
- 1V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 0.35 nC @ 4.5 V
- Vgs (Max):
- ±10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 21.5 pF @ 15 V
- FET Feature:
- -
- Power Dissipation (Max):
- 280mW (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
DMN2991UTQ-7 FAQ
1.How can I place an order for DMN2991UTQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMN2991UTQ-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 DMN2991UTQ-7 reliable?
The price and inventory of DMN2991UTQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMN2991UTQ-7 is usually 5 days.
3.What payment methods are accepted for DMN2991UTQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMN2991UTQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMN2991UTQ-7?
DMN2991UTQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMN2991UTQ-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 DMN2991UTQ-7?
For technical support, including DMN2991UTQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMN2991UTQ-7 requirements.
6.How does Aetrix verify that DMN2991UTQ-7 is sourced from the original manufacturer or authorized distributors?
All DMN2991UTQ-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 DMN2991UTQ-7 meets industry standards.
7.What is the process for return or replacement of DMN2991UTQ-7?
All DMN2991UTQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMN2991UTQ-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 DMN2991UTQ-7 part is unused and in its original packaging.
Return procedure for DMN2991UTQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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