Diodes Incorporated DMC1029UFDB-7

Overview

DMC1029UFDB from Diodes Incorporated is a complementary pair enhancement-mode MOSFET in a single U-DFN2020-6 (Type B) package, integrating an N-channel (12V, 29mΩ @ 4.5V) and P-channel (-12V, 61mΩ @ -4.5V) device for bidirectional power control. It delivers low R_DS(ON), fast switching (t_F = 4.1ns N-ch / 26.4ns P-ch), and operates across -55°C to +150°C junction temperature-used in compact load switch circuits for USB-C PD adapters and portable power banks.

For engineers reviewing the DMC1029UFDB datasheet, DMC1029UFDB pinout, DMC1029UFDB application, or DMC1029UFDB equivalent, key selection criteria include dual-channel voltage rating symmetry, gate threshold matching (±0.4–1.0V), thermal resistance (R_θJA = 91°C/W), low-profile 0.6mm height, and RoHS-compliant NiPdAu terminations.

Technical Context

This dual-MOSFET integrates matched N- and P-channel devices on one die with shared thermal path and tightly coupled gate drive characteristics. Its complementary topology enables synchronous half-bridge operation without external level-shifting, supporting 1.5–4.5V logic-compatible gate drive for both channels.

The device uses trench-gate process technology to achieve low R_DS(ON) at low V_GS, with C_iss values of 914pF (N-ch) and 915pF (P-ch), Crss of 119pF/183pF, and Q_g of 10.5nC/10.7nC-enabling efficient 1–2MHz DC-DC converter control and minimizing shoot-through risk in load-switch timing.

Key Specifications

Pinout & Package

U-DFN2020-6 (Type B) package with exposed thermal pad (no internal connection), 0.65mm pitch, and NiPdAu-plated copper leadframe. Dimensions: 2.0mm × 2.0mm × 0.6mm max height.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar complementary MOSFET pair applications.

Compared with DMC1029UFDB, DMC2038LVT-7 trades efficiency for cost and DMC2038LVT-7 offers no thermal or height advantage, while SIZ270DT-T1-GE3 introduces asymmetry and layout incompatibility-making DMC1029UFDB optimal for compact, symmetric 12V dual-rail load switching.

Availability

DMC1029UFDB is available at Aetrix Electronics and suitable for USB-C power delivery modules, portable power bank load control, and industrial sensor node power gating requiring stable component supply across production lifecycles.

Supply support for DMC1029UFDB 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 centers across Asia and manufacturing in IATF 16949-certified facilities.

The DMC series targets high-efficiency, space-constrained power management-designed specifically for load switching, battery protection, and DC-DC converter applications demanding low R_DS(ON), fast switching, and robust thermal performance.

FAQ

What is the maximum continuous drain current for each channel at +70°C ambient?

At TA = +70°C, the N-channel supports 4.4A and the P-channel supports -3.0A under steady-state conditions with device mounted on a 1" × 1" FR-4 PCB with 2oz copper. These values reflect thermal derating from the +25°C ratings of 5.6A and -3.8A due to reduced heat dissipation at elevated ambient temperatures.

Can DMC1029UFDB be used in a synchronous buck converter high-side/low-side configuration?

No-DMC1029UFDB is not intended for synchronous rectification in buck converters. Its P-channel device has significantly higher R_DS(ON) and slower switching than dedicated low-side N-MOSFETs, and the gate drive architecture lacks bootstrap capability for high-side N-MOS control. It is optimized for load switching, not PWM power stage operation.

Is the thermal pad on the U-DFN2020-6 package electrically connected?

No-the exposed thermal pad on the bottom of the U-DFN2020-6 (Type B) package is not internally connected to any terminal. It is designed solely for thermal conduction to the PCB and must be soldered to a thermal land with appropriate stencil aperture to maximize heat transfer without shorting adjacent pins.

Does DMC1029UFDB meet AEC-Q101 requirements for automotive use?

DMC1029UFDB is not AEC-Q101 qualified. While it operates across -55°C to +150°C and is manufactured in IATF 16949-certified facilities, Diodes Incorporated explicitly states that automotive-grade qualification (including PPAP) requires separate part numbering and change control-contact Diodes directly for AEC-Q101-compliant alternatives like the DMC1029UFDB-A.