Diodes Incorporated DMP1046UFDB-13

Overview

DMP1046UFDB from Diodes Incorporated is a dual P-channel enhancement-mode MOSFET in a U-DFN2020-6 (Type B) package, rated for -12V V_DSS, 61mΩ R_DS(ON) at V_GS = -4.5V, and -3.8A continuous drain current at T_A = +25°C. It serves as a compact, low-profile load switch in portable power adaptors and battery-powered systems requiring efficient bidirectional power control.

For engineers reviewing the DMP1046UFDB datasheet, DMP1046UFDB pinout, DMP1046UFDB application, or DMP1046UFDB equivalent, key selection criteria include its dual-channel P-channel topology, low R_DS(ON) at 2.5V gate drive, 0.6mm max height for space-constrained PCBs, and compliance with AEC-Q200-ready manufacturing processes.

Technical Context

This device integrates two independent P-channel MOSFETs sharing no internal connection-each channel features separate source, drain, and gate terminals. Its enhancement-mode operation requires negative gate-source voltage to conduct, enabling high-side switching without level-shifting circuitry.

The U-DFN2020-6 (Type B) package uses NiPdAu-plated copper leadframe and achieves R_θJA = 92°C/W on 1"×1" FR-4 with 2oz copper. Thermal performance supports pulsed ID up to -15A and avalanche energy rating of 8mJ (L = 0.1mH).

Key Specifications

Pinout & Package

U-DFN2020-6 (Type B) is a 2.0mm × 2.0mm × 0.6mm low-profile, lead-free, halogen-free surface-mount package with exposed thermal pad (non-electrical). Pin numbering follows bottom-view orientation with Pin 1 marked by chamfered corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual P-channel load switch applications.

Compared with DMC2038LSD-13 and SI2301BDS-T1-GE3, DMP1046UFDB delivers superior current density (3.8A in 4mm²), lower thermal resistance (92°C/W vs. ≥150°C/W), and native dual-channel integration-enabling smaller PCB area and tighter thermal design in portable power systems.

Availability

DMP1046UFDB is available at Aetrix Electronics and suitable for portable power adaptors, USB-C power delivery systems, and battery protection circuits requiring stable component supply, RoHS-compliant sourcing, and consistent lead-time visibility.

Supply support for DMP1046UFDB 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.

DMP1046UFDB belongs to Diodes' U-DFN power MOSFET product line, engineered specifically for space-constrained, high-efficiency DC power management in consumer and industrial portable electronics.

FAQ

What is the maximum safe operating junction temperature for DMP1046UFDB?

The absolute maximum junction temperature is +150°C, as specified in the Absolute Maximum Ratings table. Operation above this limit risks permanent parametric degradation or catastrophic failure. Derating begins at +25°C ambient based on R_θJA = 92°C/W; at +70°C ambient, maximum continuous power drops to ~0.87W to maintain T_J ≤ 150°C.

Can DMP1046UFDB be used in back-to-back configuration for reverse-current blocking?

Yes-its dual independent P-channel structure supports back-to-back connection (D1–S2 and D2–S1 tied together) to block reverse current in battery charging paths. Each channel's V_GS(TH) range (-0.4V to -1.0V) ensures reliable turn-on with typical battery voltages, and body diode forward voltage (V_SD = -0.65V typ.) minimizes conduction loss during normal operation.

Is the thermal pad on the U-DFN2020-6 (Type B) package electrically connected?

No-the exposed thermal pad is non-electrical and intended solely for thermal conduction to the PCB copper pour. It must be soldered to a solid thermal land with appropriate stencil aperture (typically 50–70% coverage) but must not be connected to any signal or power net. Electrical isolation prevents unintended shorting in high-density layouts.

Does DMP1046UFDB meet automotive qualification standards?

DMP1046UFDB is manufactured in IATF 16949-certified facilities and supports PPAP documentation, but it is not formally qualified to AEC-Q101. For automotive applications, Diodes offers pin-compatible AEC-Q101 variants such as DMP1046UFDBQ-13 (with "Q" suffix), which undergoes additional stress testing and lot traceability per automotive requirements.