Diodes Incorporated DGD05463FN-7

Overview

DGD05463FN-7 from Diodes Incorporated is a high-frequency half-bridge gate driver IC designed to drive two N-channel MOSFETs in synchronous buck, motor control, and Class-D amplifier topologies. It features 1.5A source / 2.5A sink output current, programmable deadtime (40–560 ns), and 50V floating high-side capability. Its TTL/CMOS-compatible 3.3V logic inputs interface directly with microcontrollers in battery-powered hand tools and DC-DC converters.

For engineers reviewing the DGD05463FN-7 datasheet, DGD05463FN-7 pinout, DGD05463FN-7 application, or DGD05463FN-7 equivalent, key selection criteria include propagation delay matching (≤50 ns), ultra-low standby current (<1 µA), dual UVLO protection, internal bootstrap diode integration, and W-DFN3030-10 thermal performance (R_θJA = 64 °C/W).

Technical Context

The DGD05463FN-7 implements cross-conduction prevention logic to enforce non-overlapping HO and LO outputs, eliminating shoot-through risk in half-bridge configurations. Its programmable deadtime is set via external resistor (R_DT) between DT pin and COM, enabling precise timing control across 40–560 ns range depending on resistance value.

It integrates an internal bootstrap diode (V_F = 0.67 V at 100 µA) and supports high dV/dt tolerance (50 V/ns) on the VS node. Dual independent undervoltage lockout circuits monitor both V_CC (3.3–4.4 V threshold) and V_BS (3.3–4.4 V threshold) to disable outputs during supply brownout.

Key Specifications

Pinout & Package

Package: W-DFN3030-10 (Type TH), 3.0 × 3.0 mm, 0.75 mm height, exposed thermal pad connected to COM.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge gate driver applications.

Compared with IRS2004STRPBF and LM5109BMAX/NOPB, the DGD05463FN-7 uniquely balances programmable deadtime, integrated bootstrap diode, and ultra-low quiescent current-making it optimal for space-constrained, battery-sensitive, and high-frequency half-bridge designs where BOM reduction and thermal efficiency are critical.

Availability

DGD05463FN-7 is available at Aetrix Electronics and suitable for DC-DC converters, motor control modules, and battery-powered hand tools requiring stable component supply and long-term industrial availability.

Supply support for DGD05463FN-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, specializing in high-performance power management, signal integrity, and timing solutions.

The DGD05463 belongs to Diodes' high-frequency gate driver product line, engineered for compact, efficient half-bridge switching in portable and thermally constrained applications such as eCig, power tools, and POL converters.

FAQ

What is the purpose of the DT pin on the DGD05463FN-7?

The DT pin sets deadtime duration by connecting an external resistor to COM. Resistance values from 10 kΩ to 100 kΩ yield deadtimes from 40–100 ns or 300–560 ns respectively. This hardware-programmable feature prevents simultaneous conduction of high-side and low-side MOSFETs, eliminating shoot-through risk without software intervention or complex timing circuitry.

Can the DGD05463FN-7 drive 5V logic-level MOSFETs directly?

Yes-the DGD05463FN-7 provides 1.5A source / 2.5A sink peak output current and rail-to-rail voltage swing (0 V to V_B or V_CC), enabling direct drive of logic-level N-MOSFETs with gate thresholds ≤2.5 V. Its 0.15–0.22 V low-level output voltage at 100 mA ensures strong turn-off even under load, critical for reliable switching in high-noise motor and converter environments.

Is the internal bootstrap diode sufficient for all operating conditions?

The internal bootstrap diode is sufficient when V_CC ≥ 4.9 V, per datasheet Note 9. At V_CC = 4.5–4.9 V, an external Schottky diode (0.3 V V_F, 1 A rating) is required to maintain adequate bootstrap capacitor recharge. The internal diode's 0.67 V forward drop at 100 µA confirms its suitability for low-quiescent-current biasing but not high-frequency, high-duty-cycle recharging.

Why does the datasheet state "NOT RECOMMENDED FOR NEW DESIGNS"?

This notice reflects Diodes' internal roadmap-not obsolescence. The DGD05463 remains fully manufactured and supported, with no announced discontinuance. Customers initiating new designs should contact Diodes or Aetrix for guidance on potential next-generation alternatives (e.g., enhanced thermal variants or AEC-Q100 qualified versions), though DGD05463FN-7 continues to meet all published specifications and is widely deployed in production.