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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Diodes Incorporated DMP2170U-7

Name: DMP2170U-7
Brand: Diodes Incorporated
SKU: DMP2170U-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMP2170U-7

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: DMP2170U-7.pdf

Description:: MOSFET P-CH 20V 3.1A SOT23

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Product details

Overview

DMP2170U-7 from Diodes Incorporated is a 20V P-channel enhancement-mode MOSFET in SOT23 package, delivering 90mΩ R_DS(ON) at V_GS = −4.5V and −3.1A continuous drain current at T_A = +25°C. It serves as a low-side load switch or synchronous rectifier in compact DC-DC converters and battery charging circuits.

For engineers reviewing the DMP2170U-7 datasheet, DMP2170U-7 pinout, DMP2170U-7 application, or DMP2170U-7 equivalent, key selection criteria include guaranteed R_DS(ON) at −2.5V/−4.5V gate drive, AEC-Q101 qualification for automotive-grade reliability, and SOT23 thermal performance under pulsed and steady-state conditions.

Technical Context

This P-channel MOSFET operates with a gate threshold voltage (V_GS(TH)) ranging from −0.4V to −1.25V, enabling robust turn-on with logic-level gate drive down to −2.5V. Its low input capacitance (C_iss = 303pF) and fast switching times (t_D(ON) = 5.4ns, t_F = 13.6ns) support high-frequency power conversion up to 1MHz.

The device integrates a body diode with V_SD = −0.8V at −1A and reverse recovery time t_RR = 5.5ns, making it suitable for synchronous buck topologies where diode conduction and recovery losses must be minimized. Thermal resistance R_θJA is 163°C/W on standard FR-4 PCB and improves to 99°C/W with enhanced copper layout.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	−20V - Maximum blocking voltage before avalanche breakdown; sets upper limit for input rail in 12V systems.
R_DS(ON)	90mΩ @ V_GS = −4.5V - Confirmed on-resistance at standard logic-level drive; determines I²R conduction loss in load-switching applications.
I_D (max)	−3.1A @ T_A = +25°C - Continuous drain current rating under standard PCB mounting; defines maximum steady-state load capability.
C_iss	303pF @ V_DS = −10V - Input capacitance governing gate drive energy and switching speed; enables efficient operation with low-power drivers.
t_RR	5.5ns - Body diode reverse recovery time; critical for minimizing shoot-through and switching loss in synchronous rectification.
Q_g	3.6nC @ V_GS = −4.5V - Total gate charge required for full turn-on; directly impacts driver sizing and switching efficiency.
R_θJA	163°C/W - Junction-to-ambient thermal resistance on minimal pad layout; used to calculate junction temperature rise under real operating power dissipation.

Pinout & Package

Package: SOT23 - Surface-mount plastic package with 3 terminals, 0.009g mass, UL 94V-0 rated molding compound, and matte tin–annealed copper leadframe.

Pin/Terminal	Circuit Role	Design Meaning
1 (Drain)	Main current-carrying terminal (high-side connection in high-side switch configuration)	Connected to power rail or load return path; carries full load current and sustains V_DSS during off-state.
2 (Gate)	Control electrode for channel formation	Receives negative gate-source voltage to enhance P-channel conduction; requires <3.6nC charge for full turn-on at −4.5V.
3 (Source)	Reference terminal for gate drive and current return	Biased at higher potential than drain in normal operation; forms source node for body diode cathode and gate reference point.

Key Features

Feature	Design Value
Low R_DS(ON) at −2.5V	250mΩ - Enables reliable operation with weak or battery-depleted gate drive sources in portable power systems.
Fast switching speed	t_F = 13.6ns - Reduces transition losses in high-frequency DC-DC converters operating above 500kHz.
AEC-Q101 qualified	Qualified for automotive-grade reliability - Supports use in infotainment power rails and ADAS subsystems requiring extended temperature and lifetime validation.
Green, halogen-free construction	<900ppm Br, <900ppm Cl, <1000ppm Sb - Meets strict environmental compliance for consumer, industrial, and automotive end equipment.
Low leakage	I_DSS ≤ −1.0μA @ V_DS = −20V - Minimizes standby power loss in always-on battery-powered devices such as USB-C chargers.

Applications

Battery Charging Circuits

Portable Power Adaptors

Use Scenario: Reverse-polarity protection and charge-path control in single-cell Li-ion battery packs using USB or wall adapter input.

IC Role / Device Role: Low-side P-channel MOSFET acting as ideal diode replacement and load switch.

Use Value: Eliminates 0.3–0.4V diode drop, increasing charging efficiency by >3% and reducing thermal load in space-constrained enclosures.

Use Scenario: Output voltage regulation and overcurrent protection in 5V/9V/12V USB PD and QC-compliant compact adaptors.

IC Role / Device Role: Synchronous rectifier in secondary-side synchronous buck or flyback topology.

Use Value: Achieves <92% peak efficiency at 2A output due to 90mΩ R_DS(ON) and 5.5ns t_RR, reducing heatsink requirements.

DC-DC Converters

Power Management Functions

Use Scenario: High-efficiency 3.3V/5V point-of-load (POL) regulators in FPGA, MCU, and sensor subsystems.

IC Role / Device Role: High-side switch in buck converter high-side position or low-side switch in boost/buck-boost configurations.

Use Value: Delivers stable 3.1A output with <50mV dropout at 2A load, supporting dynamic current demands of digital ICs.

Use Scenario: System-level power sequencing and rail enable/disable in multi-rail embedded controllers and IoT edge nodes.

IC Role / Device Role: Controlled load switch managing power delivery to peripherals such as displays, sensors, or radios.

Use Value: Enables precise inrush current limiting via gate slew control and supports <100μA quiescent current in shutdown mode.

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMG2305U-7	R_DS(ON) = 48mΩ @ −4.5V (lower), but Q_g = 5.2nC (higher); same SOT23 package	Better conduction loss at high current, but higher gate drive demand limits use with weak microcontroller outputs	Select when system prioritizes efficiency over drive strength and board space allows minor layout revision.
AO3401A	R_DS(ON) = 85mΩ @ −4.5V (slightly lower), t_RR = 12ns (worse), not AEC-Q101 qualified	Lower conduction loss but slower body diode recovery increases switching loss in high-frequency sync rectifiers	Prefer for cost-sensitive consumer applications where automotive qualification is unnecessary and switching frequency ≤300kHz.

Compared with DMG2305U-7 and AO3401A, DMP2170U-7 offers balanced trade-offs: best-in-class R_DS(ON) at −2.5V (250mΩ), AEC-Q101 qualification, and ultra-fast t_RR, making it optimal for automotive and portable power designs demanding both efficiency and reliability.

Availability

DMP2170U-7 is available at Aetrix Electronics and suitable for battery charging circuits, portable power adaptors, and DC-DC converters requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle availability.

Supply support for DMP2170U-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The DMP2170U belongs to Diodes' high-reliability P-channel MOSFET product line, engineered specifically for space-constrained, high-efficiency power management in automotive, industrial, and portable electronics.

FAQ

What is the maximum safe operating junction temperature for DMP2170U-7?

The DMP2170U-7 has a specified junction temperature range of −55°C to +150°C. Its absolute maximum rating is TJ = +150°C, and sustained operation above this value risks permanent degradation of R_DS(ON) and gate oxide integrity. Derating is required above +125°C ambient per the transient thermal resistance curve (Figure 13).

Can DMP2170U-7 be used in high-side switching configurations?

Yes - as a P-channel MOSFET, DMP2170U-7 is inherently suited for high-side switching. Gate drive must be referenced to the source (i.e., V_GS ≤ −2.5V), requiring either a charge pump or level-shifted gate driver when the source is at VIN. Its −20V V_DSS rating supports use in 12V automotive and industrial rails.

Is the body diode in DMP2170U-7 suitable for reverse current protection?

Yes - the integrated body diode has V_SD = −0.8V at −1A and t_RR = 5.5ns, making it effective for reverse-current blocking in battery backup paths and USB OTG applications. However, its forward voltage is higher than Schottky diodes, so conduction loss must be evaluated against system efficiency targets.

Does DMP2170U-7 require external gate resistors for EMI control?

Not strictly required, but recommended - the device's low Q_g (3.6nC) and fast t_F (13.6ns) can generate high dv/dt transients. A 10Ω series gate resistor reduces ringing and EMI without significantly impacting switching speed, especially in layouts with long gate traces or unshielded environments.

DMP2170U-7 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:: 3.1A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 2.5V, 4.5V

Rds On (Max) @ Id, Vgs:: 90mOhm @ 3.5A, 4.5V

Vgs(th) (Max) @ Id:: 1.25V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 7.8 nC @ 10 V

Vgs (Max):: ±12V

Input Capacitance (Ciss) (Max) @ Vds:: 303 pF @ 10 V

FET Feature:: -

Power Dissipation (Max):: 780mW (Ta)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

DMP2170U-7 FAQ

1.How can I place an order for DMP2170U-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DMP2170U-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 DMP2170U-7 reliable?

The price and inventory of DMP2170U-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMP2170U-7 is usually 5 days.

3.What payment methods are accepted for DMP2170U-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMP2170U-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMP2170U-7?

DMP2170U-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMP2170U-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 DMP2170U-7?

For technical support, including DMP2170U-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMP2170U-7 requirements.

6.How does Aetrix verify that DMP2170U-7 is sourced from the original manufacturer or authorized distributors?

All DMP2170U-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 DMP2170U-7 meets industry standards.

7.What is the process for return or replacement of DMP2170U-7?

All DMP2170U-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMP2170U-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 DMP2170U-7 part is unused and in its original packaging.

Return procedure for DMP2170U-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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