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Diodes Incorporated DMP31D7LQ-13
- Part No.:
- DMP31D7LQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DMP31D7LQ-13.pdf
- Description:
- MOSFET BVDSS: 25V~30V SOT23 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:3,933
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Product details
Overview
DMP31D7LQ-13 from Diodes Incorporated is a P-channel enhancement-mode MOSFET in SOT23 package, rated for -30V VDSS, 0.9Ω RDS(ON) @ VGS = -10V, and -0.58A continuous drain current at +25°C. It serves as a low-side load switch or synchronous rectifier in compact DC-DC converters for portable and automotive power management systems.
For engineers reviewing the DMP31D7LQ-13 datasheet, DMP31D7LQ-13 pinout, DMP31D7LQ-13 application, or DMP31D7LQ-13 equivalent, key selection criteria include verified AEC-Q101 qualification, gate threshold voltage (-1 to -2.6V), thermal resistance (290°C/W), body diode forward voltage (-0.8 to -1.2V), and ESD-protected gate structure.
Technical Context
This MOSFET operates in enhancement mode with negative gate control logic, requiring VGS ≤ -1V to initiate conduction and fully enhancing at VGS = -10V. Its low RDS(ON) and 19pF Ciss support high-efficiency switching in space-constrained buck regulators and load-switching circuits.
The device integrates an intrinsic body diode with -0.8V forward voltage at -0.23A, enabling bidirectional current handling in flyback and reverse-polarity protection topologies. Thermal design is constrained by its 0.43W steady-state power dissipation on FR-4 PCB with minimum pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | -30V - maximum blocking voltage before avalanche breakdown |
| RDS(ON) | 0.9Ω @ VGS = -10V - determines I2R conduction loss in load-switch applications |
| ID (continuous) | -0.58A @ TA = +25°C - usable current limit under natural convection cooling |
| Ciss | 19pF - governs gate drive energy requirement and switching speed |
| VGS(TH) | -1 to -2.6V - defines minimum gate voltage needed to turn on device reliably |
| tR | 74ns - rise time limiting factor for PWM frequency in DC-DC stages |
| Qg | 0.36nC - total gate charge determining driver IC sizing and switching loss |
Pinout & Package
Package: SOT23 - surface-mount plastic package with 3 terminals, 0.009g mass, UL 94V-0 rating, and matte tin–annealed copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Source (S) | Reference node for gate control and current return path | Connected to system ground or higher potential rail in high-side configurations |
| Gate (G) | Control electrode for channel formation | ESD-protected input requiring <±10μA leakage and ±20V absolute max rating |
| Drain (D) | Current output terminal and primary voltage stress point | Handles full VDSS and carries load current; connects to switched output or inductor node |
Key Features
| Feature | Design Value |
|---|---|
| Low RDS(ON) | 0.9Ω @ -10V enables <300mW conduction loss at 0.5A in portable battery switches |
| Fast switching | 74ns rise time supports >1MHz PWM operation in miniaturized DC-DC converters |
| AEC-Q101 qualified | Validated for automotive temperature range (-55°C to +150°C) and PPAP-capable manufacturing |
| ESD-protected gate | HBM rating ≥2kV ensures robustness during board assembly and handling |
| Green packaging | Halogen- and antimony-free compound compliant with RoHS 3 and IATF 16949 production |
Applications
| Battery Protection Circuit | USB Power Delivery Switch |
|---|---|
Use Scenario: Reverse-current blocking and over-discharge cutoff in single-cell Li-ion battery packs. IC Role / Device Role / Timing Role: P-channel MOSFET used as low-side disconnect switch controlled by battery management IC. Use Value: 0.9Ω RDS(ON) limits voltage drop to <530mV at 0.58A, preserving battery runtime and thermal margin. | Use Scenario: Input power path control in USB-C PD sink devices with 5–20V input range. IC Role / Device Role / Timing Role: Load switch isolating VBUS from system rails during fault conditions or hot-plug events. Use Value: -30V VDSS and -2.6V VGS(TH) ensure reliable turn-on with standard 3.3V GPIO control across full input range. |
| Automotive Body Control Module | Industrial Sensor Node Power Gating |
Use Scenario: Local 12V load switching for LED lighting, window motors, or HVAC actuators. IC Role / Device Role / Timing Role: AEC-Q101-qualified discrete switch driven by microcontroller GPIO with level-shifting. Use Value: 290°C/W RθJA and -55°C to +150°C operating range meet automotive ambient and transient thermal requirements. | Use Scenario: Power gating of analog front-end and RF transceiver in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Low-leakage (≤1μA IDSS) shutdown switch minimizing standby current in sleep mode. Use Value: -1μA IDSS at -24V ensures <10nA system-level quiescent current contribution per switch. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar P-channel MOSFET switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN3026LSD-13 | Higher RDS(ON) (1.2Ω @ -4.5V), same SOT23 package, no AEC-Q101 rating | Not qualified for automotive use; suitable only for commercial-grade consumer power switches | Select when AEC-Q101 compliance is unnecessary and cost sensitivity outweighs thermal performance |
| SI2301DS-T1-BE3 | Lower VDSS (-20V), similar RDS(ON) (0.95Ω @ -4.5V), no ESD protection | Limited to 5–12V systems; requires external gate protection in noisy environments | Choose for non-automotive 3.3V/5V logic-controlled switches where gate robustness is secondary |
Compared with DMN3026LSD-13 and SI2301DS-T1-BE3, DMP31D7LQ-13 delivers superior thermal capability (290°C/W vs. ~320°C/W), guaranteed AEC-Q101 qualification, and integrated ESD protection-critical for automotive and industrial field reliability.
Availability
DMP31D7LQ-13 is available at Aetrix Electronics and suitable for battery protection circuits, USB power delivery switches, and automotive body control modules requiring stable component supply and long-term manufacturability.
Supply support for DMP31D7LQ-13 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 sales operations across Asia, Europe, and North America.
The DMP31D7LQ belongs to Diodes' automotive-qualified power MOSFET product line, engineered specifically for high-reliability, low-RDS(ON) switching in 12V and 24V vehicle subsystems and portable power architectures.
FAQ
Is DMP31D7LQ-13 suitable for high-frequency switching above 1 MHz?
Yes. With 74ns rise time, 31ns fall time, and 19pF input capacitance, DMP31D7LQ-13 supports clean switching up to 2 MHz in buck converter topologies when paired with a low-impedance gate driver. Its 0.36nC total gate charge minimizes driver power consumption and propagation delay.
What is the maximum safe operating temperature for continuous operation?
The junction temperature must not exceed +150°C. At ambient +70°C, the device supports -0.46A continuous drain current with its 290°C/W thermal resistance on standard FR-4 PCB. Derating curves in Figure 6 confirm RDS(ON) remains stable up to 150°C, ensuring predictable conduction loss.
Does DMP31D7LQ-13 require external gate resistors for stability?
No external gate resistor is required for basic switching, but a 10Ω series resistor is recommended per the datasheet's test condition (RL = 47Ω, RG = 10Ω) to dampen ringing caused by parasitic inductance in high-speed layouts. This improves EMI and prevents false triggering during fast transients.
Can DMP31D7LQ-13 replace N-channel MOSFETs in high-side configurations?
No. As a P-channel device, DMP31D7LQ-13 is inherently suited for low-side switching or high-side configurations with gate drive referenced to the source. For true high-side N-channel replacement, a dedicated gate driver with bootstrap or isolated supply is required-DMP31D7LQ-13 does not integrate such functionality.
DMP31D7LQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- FET Type:
- P-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 580mA (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 900mOhm @ 420mA, 10V
- Vgs(th) (Max) @ Id:
- 2.6V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 0.36 nC @ 4.5 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 19 pF @ 15 V
- FET Feature:
- -
- Power Dissipation (Max):
- 430mW (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DMP31D7LQ-13 FAQ
1.How can I place an order for DMP31D7LQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMP31D7LQ-13 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 DMP31D7LQ-13 reliable?
The price and inventory of DMP31D7LQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMP31D7LQ-13 is usually 5 days.
3.What payment methods are accepted for DMP31D7LQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMP31D7LQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMP31D7LQ-13?
DMP31D7LQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMP31D7LQ-13 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 DMP31D7LQ-13?
For technical support, including DMP31D7LQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMP31D7LQ-13 requirements.
6.How does Aetrix verify that DMP31D7LQ-13 is sourced from the original manufacturer or authorized distributors?
All DMP31D7LQ-13 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 DMP31D7LQ-13 meets industry standards.
7.What is the process for return or replacement of DMP31D7LQ-13?
All DMP31D7LQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMP31D7LQ-13, 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 DMP31D7LQ-13 part is unused and in its original packaging.
Return procedure for DMP31D7LQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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