Diodes Incorporated DMP4025LK3Q-13

Overview

DMP4025LK3Q-13 from Diodes Incorporated is a 40V P-channel enhancement-mode MOSFET in TO252 (DPAK) package, qualified to AEC-Q101 and PPAP-capable for automotive use. It delivers 25 mΩ R_DS(ON) at V_GS = −10 V, −8.6 A continuous drain current at T_A = +25°C, and supports motor control, DC-DC converters, backlighting, and printer equipment.

For engineers reviewing the DMP4025LK3Q-13 datasheet, DMP4025LK3Q-13 pinout, DMP4025LK3Q-13 application, or DMP4025LK3Q-13 equivalent, key selection criteria include its AEC-Q101 qualification, low R_DS(ON) at −4.5 V (45 mΩ), thermal resistance R_θJA = 45 °C/W on 25 mm × 25 mm PCB, and body diode forward voltage of −0.7 V at −1 A.

Technical Context

This MOSFET operates as a high-side load switch or synchronous rectifier in automotive power stages. Its gate threshold voltage range (−0.8 V to −1.8 V) enables robust turn-on with standard logic-level drivers, while its 14 nC total gate charge at V_GS = −4.5 V supports efficient switching in 100–500 kHz DC-DC topologies.

The device integrates a low-leakage body diode (I_S = −8.6 A pulsed) and exhibits stable R_DS(ON) over −55°C to +150°C ambient, with normalized on-resistance variation ≤1.7× across temperature. Transient thermal resistance R_θJA(t) drops from 70 °C/W (single pulse) to 45 °C/W (steady-state), enabling reliable operation under intermittent load surges.

Key Specifications

Pinout & Package

Package: TO252 (DPAK), surface-mount, single-ended heat sink tab (Drain-connected). Molded plastic body with matte tin annealed terminals; UL 94V-0 rated, MSL Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMT4007LPSQ-13 and IPD80P04P4L-13, DMP4025LK3Q-13 offers optimal balance of cost, thermal performance (45 °C/W), and qualification completeness (PPAP + IATF 16949), making it ideal for mid-power automotive subsystems where footprint and supply-chain continuity are prioritized.

Availability

DMP4025LK3Q-13 is available at Aetrix Electronics and suitable for motor control, DC-DC converters, backlighting, and printer equipment requiring stable component supply across automotive production lifecycles.

Supply support for DMP4025LK3Q-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, specializing in high-reliability components for automotive, industrial, and computing markets.

This device belongs to Diodes' AEC-Q101-qualified PowerMOS family, engineered specifically for automotive power management where robustness, thermal stability, and process traceability are mandatory.

FAQ

What is the maximum allowable junction temperature for DMP4025LK3Q-13?

The absolute maximum junction temperature is +150°C, as specified in the Thermal Characteristics table. Operation beyond this limit risks permanent degradation of the silicon die and bond wires. Derating curves in Figure 1 confirm that at 70°C ambient, maximum continuous power dissipation is 1.7 W on minimum copper PCB, rising to 2.78 W on 25 mm × 25 mm FR4.

Can DMP4025LK3Q-13 be driven directly by a 3.3 V microcontroller GPIO?

No - its gate threshold voltage range (−0.8 V to −1.8 V) requires a negative gate-source voltage to turn on. A 3.3 V GPIO cannot produce the required −4.5 V or −10 V. A dedicated gate driver with negative output capability or a charge pump circuit is necessary for reliable switching.

Is the drain pad electrically isolated from the PCB copper pour in TO252 packaging?

No - the exposed drain pad on the TO252 package is internally connected to the Drain terminal and must be soldered to a large copper area for thermal and electrical performance. This pad is not insulated; isolation requires external design measures such as slotting or clearance around the pad.

Does DMP4025LK3Q-13 support bidirectional current flow in H-bridge configurations?

Yes - its integrated body diode allows reverse current flow from source to drain (e.g., freewheeling during inductive load decay). However, the diode's −0.7 V forward voltage and limited surge rating mean external Schottky diodes may be added for high-repetition, high-current recovery paths in demanding H-bridge motor drives.