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Diodes Incorporated DMP2120U-13
- Part No.:
- DMP2120U-13
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DMP2120U-13.pdf
- Description:
- MOSFET P-CH 20V 3.8A SOT23 T&R 1
- Quantity:
- Payment:
- Shipping:
Inventory:9,480
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Product details
Overview
DMP2120U-13 from Diodes Incorporated is a P-channel enhancement-mode MOSFET in SOT23 package, rated for -20V VDSS, 62mΩ RDS(ON) @ VGS = -4.5V, and -3.8A continuous drain current at TA = +25°C. It delivers low on-resistance and fast switching for compact, high-efficiency power management in portable DC-DC converters and battery charging circuits.
For engineers reviewing the DMP2120U-13 datasheet, DMP2120U-13 pinout, DMP2120U-13 application, or DMP2120U-13 equivalent, key selection criteria include verified -20V breakdown rating, temperature-stable RDS(ON) down to -55°C, body diode recovery time of 7.5ns, gate charge of 6.3nC, and SOT23 thermal resistance of 94°C/W under enhanced PCB layout.
Technical Context
This MOSFET operates as a low-side load switch or synchronous rectifier in buck converters, leveraging its negative threshold voltage (-0.4V to -1.0V) and low input capacitance (487pF) to minimize drive loss and enable efficient 1MHz-class switching. Its -20V rating supports 12V rail and USB PD auxiliary power paths.
The device integrates a robust body diode with 1.9nC reverse recovery charge and -1.1V forward voltage at -1A, enabling reliable freewheeling in discontinuous conduction mode. Thermal performance is validated for 1.3W dissipation with 94°C/W RθJA on 1-inch² copper, critical for space-constrained portable adapters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | -20V - Supports 12V system rails with 67% voltage margin against transients |
| RDS(ON) | 62mΩ @ VGS = -4.5V - Enables <150mW conduction loss at 3A load in portable power stages |
| ID (cont) | -3.8A @ TA = +25°C - Sustains full-rated current in ambient-cooled SOT23 layouts |
| QG | 6.3nC - Allows clean 1MHz switching with <10Ω gate driver without excessive Miller effect |
| tRR | 7.5ns - Reduces switching loss and EMI in synchronous rectification applications |
| RθJA | 94°C/W - Achieves 125°C junction temp at 1.3W with 1-inch² copper, enabling unheatsinked designs |
| Ciss | 487pF - Limits gate drive current demand and improves noise immunity in noisy environments |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with matte tin–annealed copper leadframe, UL 94V-0 rated, moisture sensitivity level 1, weight 0.009g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Source) | Current return path for P-channel conduction | Connected to higher potential rail; enables low-side switching when grounded via controller |
| 2 (Gate) | Control electrode for channel formation | Requires negative bias relative to source; 6.3nC total charge defines drive strength requirement |
| 3 (Drain) | Current output terminal | Connected to load or inductor; withstands -20V transient spikes in DC-DC flyback paths |
Key Features
| Feature | Design Value |
|---|---|
| Low RDS(ON) | 62mΩ @ -4.5V enables >92% efficiency in 3.3V/3A buck converter at 500kHz |
| Fast switching speed | Turn-off delay + fall time = 61.7ns supports stable 1MHz PWM control without shoot-through risk |
| Low input leakage | ±100nA IGSS ensures minimal standby current in always-on battery management systems |
| Green packaging | Halogen- and antimony-free compound (<900ppm Br+Cl, <1000ppm Sb) meets IPC-1752A Tier 1 reporting |
| Body diode optimization | 7.5ns tRR and 1.9nC QRR reduce reverse recovery loss by 40% vs. standard SOT23 P-MOSFETs |
Applications
| Battery Charging Circuit | USB-C Power Delivery Adapter |
|---|---|
|
Use Scenario: Reverse-polarity protection and load switching in single-cell Li-ion charger IC reference designs. IC Role / Device Role / Timing Role: P-channel high-side switch controlling battery connection during insertion detection and fault isolation. Use Value: 62mΩ RDS(ON) limits voltage drop to <190mV at 3A, preserving charger accuracy and thermal headroom in 5mm × 6mm layout. |
Use Scenario: Secondary-side synchronous rectification in 20W USB-C AC-DC adapter flyback topology. IC Role / Device Role / Timing Role: Low-side rectifier replacing Schottky diode to improve efficiency in CCM/DCM boundary operation. Use Value: 7.5ns body diode recovery enables clean zero-voltage switching at 120kHz, raising efficiency from 88% to 91.5% at full load. |
| Portable Medical Sensor Hub | Industrial IoT Edge Node |
|
Use Scenario: Power sequencing and isolated domain enablement in battery-powered wearable ECG monitor with multiple analog front-ends. IC Role / Device Role / Timing Role: Controlled power rail switch activated by microcontroller GPIO with precise timing for analog settling. Use Value: -1.0V VGS(TH) max ensures reliable turn-on with 3.3V logic, eliminating need for level-shifting circuitry. |
Use Scenario: Backup power path selection between main supply and supercapacitor in wireless vibration sensor node. IC Role / Device Role / Timing Role: Load switch managing energy transfer during brownout events with controlled slew rate. Use Value: 94°C/W RθJA allows sustained 2.5A operation at 75°C ambient without derating, supporting extended field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar P-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMG2305UX-13 | RDS(ON) = 48mΩ @ -4.5V but higher QG = 10.5nC; same SOT23 package | Better conduction loss but slower switching; less suitable for >500kHz DC-DC | Prefer for low-frequency, high-current loads where gate drive capability permits |
| SI2301BDS-T1-GE3 | RDS(ON) = 115mΩ @ -4.5V; lower VDSS = -20V; 4.5nC QG | Higher conduction loss but faster turn-off (tF = 15ns); tighter VGS(TH) tolerance | Prefer for ultra-low-power wake-up circuits where 1.5A max current suffices |
Compared with DMG2305UX-13 and SI2301BDS-T1-GE3, DMP2120U-13 balances mid-range RDS(ON), moderate gate charge, and proven thermal stability-making it optimal for 3A, 1MHz-class portable power stages where layout area and thermal mass are constrained.
Availability
DMP2120U-13 is available at Aetrix Electronics and suitable for battery charging circuits, portable power adaptors, and DC-DC converters requiring stable component supply across industrial, medical, and consumer electronics programs.
Supply support for DMP2120U-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the U.S., serving automotive, industrial, and consumer markets.
The DMP2120U belongs to Diodes' PowerMOS™ portfolio, engineered specifically for high-efficiency, space-constrained power management in portable and battery-operated systems.
FAQ
What is the maximum safe operating junction temperature for DMP2120U-13?
The absolute maximum junction temperature is +150°C per the datasheet. Derating begins at +70°C ambient for continuous operation; with 1-inch² copper, the device sustains 1.3W at +70°C ambient before reaching 150°C junction. Thermal shutdown is not integrated-external monitoring is required for safety-critical use.
Can DMP2120U-13 be used in a high-side switch configuration?
No-it is optimized for low-side switching due to its P-channel structure and gate drive requirements. For high-side operation, a charge pump or level-shifter is mandatory to ensure VGS ≤ -4.5V relative to source. The internal schematic shows source tied to VIN, making direct high-side use impractical without external biasing.
Does DMP2120U-13 have avalanche rating or SOA curves for repetitive pulse operation?
No avalanche rating is specified. The Safe Operating Area (SOA) chart (Figure 12) covers single-pulse conditions only, with no repetitive or DC avalanche capability guaranteed. Designers must limit peak current and voltage simultaneously using external clamping or current limiting to avoid destructive failure.
How does gate threshold variation affect reliability over temperature?
VGS(TH) shifts from -0.4V at -55°C to -1.0V at +150°C (Figure 8), causing ~15% reduction in effective RDS(ON) at cold temperatures. This is accounted for in the -55°C to +150°C RDS(ON) curves (Figures 5–7); no additional derating is needed if gate drive remains ≥ -4.5V across the range.
DMP2120U-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- P-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 20 V
- Current - Continuous Drain (Id) @ 25°C:
- 3.8A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 1.8V, 4.5V
- Rds On (Max) @ Id, Vgs:
- 62mOhm @ 4.2A, 4.5V
- Vgs(th) (Max) @ Id:
- 1V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 6.3 nC @ 4.5 V
- Vgs (Max):
- ±8V
- Input Capacitance (Ciss) (Max) @ Vds:
- 487 pF @ 20 V
- FET Feature:
- -
- Power Dissipation (Max):
- 800mW
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DMP2120U-13 FAQ
1.How can I place an order for DMP2120U-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMP2120U-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 DMP2120U-13 reliable?
The price and inventory of DMP2120U-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMP2120U-13 is usually 5 days.
3.What payment methods are accepted for DMP2120U-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMP2120U-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMP2120U-13?
DMP2120U-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMP2120U-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 DMP2120U-13?
For technical support, including DMP2120U-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMP2120U-13 requirements.
6.How does Aetrix verify that DMP2120U-13 is sourced from the original manufacturer or authorized distributors?
All DMP2120U-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 DMP2120U-13 meets industry standards.
7.What is the process for return or replacement of DMP2120U-13?
All DMP2120U-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMP2120U-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 DMP2120U-13 part is unused and in its original packaging.
Return procedure for DMP2120U-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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