Diodes Incorporated DML22990LWG-13

Overview

DML22990LWG from Diodes Incorporated is a single-channel N-channel smart load switch with 3.9mΩ on-resistance, 10A continuous current rating, and adjustable slew-rate control via external CT capacitor. It operates across 0.6V–5.5V input voltage and integrates power-good (PG) indication and quick-output discharge (200Ω internal resistor). Used for controlled power delivery in SSDs and industrial PCs.

For engineers reviewing the DML22990LWG datasheet, DML22990LWG pinout, DML22990LWG application, or DML22990LWG equivalent, key selection criteria include VIN/VBIAS operating range compatibility, PG timing alignment with downstream enable sequencing, CT-based rise-time tuning for bulk-capacitance inrush management, and thermal performance under 10A load conditions.

Technical Context

The DML22990LWG implements an integrated charge-pump gate driver to fully enhance its N-channel MOSFET across low VIN (0.6V) while maintaining stable R_ON ≤ 5mΩ. Its VBIAS supply (2.5V–5.5V) powers internal logic independently of VIN, enabling robust operation even when VIN drops below 1.05V.

Controlled turn-on uses CT-pin capacitance to linearly adjust t_R from 10µs (VIN=0.6V, CT floating) to 325µs (VIN=5V, CT=10nF), directly trading inrush suppression against power-up timing. The open-drain PG output asserts after t_{PG_ON} (162–569µs), tracking VOUT stabilization-not just gate drive-to signal true load readiness.

Key Specifications

Pinout & Package

Package: V-DFN3020-10 (Type C), 3.0mm × 2.0mm × 0.8mm, exposed thermal pad (EPAD) connected to VIN for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar smart load switch applications.

Compared with TPS22919DCKR and RT9742AGQW, the DML22990LWG uniquely combines 10A capability, capacitor-tuned slew control, integrated 200Ω discharge, and sub-1V VIN operation-making it optimal for high-density, multi-rail embedded systems requiring deterministic sequencing and minimal BOM overhead.

Availability

DML22990LWG is available at Aetrix Electronics and suitable for solid-state drives, industrial PCs, notebook subsystems, and telecom gateway modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for DML22990LWG 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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.

The DML22990LWG belongs to Diodes' Smart Load Switch product line, engineered specifically for high-current, low-voltage power delivery in space-constrained computing and storage platforms where precision sequencing and inrush control are critical.

FAQ

What is the minimum input voltage supported by the DML22990LWG?

The DML22990LWG supports VIN as low as 0.6V while maintaining full functionality-including PG assertion and controlled turn-on-due to its independent VBIAS-supplied gate driver architecture. This enables direct interfacing with advanced low-voltage SoC domains without external level shifters.

How does the CT capacitor affect power-good timing?

The CT capacitor linearly increases both output rise time (t_R) and PG turn-on delay (t_{PG_ON}). For example, at VIN=5V, adding 10nF raises t_R from 38µs to 325µs and t_{PG_ON} from 188µs to 569µs. PG asserts only after VOUT stabilizes, so longer CT values delay PG assertion proportionally.

Is an external pull-up required for the PG pin?

Yes-the PG pin is open-drain and requires an external pull-up resistor (≥1kΩ) to a compatible voltage rail (e.g., 3.3V or 5V). Without it, PG cannot assert high and will remain indeterminate. If unused, PG must be tied directly to GND per datasheet guidance.

Can the DML22990LWG replace mechanical relays in hot-swap applications?

No-it is not rated for hot-swap insertion under load. While its 10A rating and fast turn-off (6µs t_OFF) support controlled power cycling, it lacks built-in overcurrent protection, reverse-current blocking, or fault reporting needed for true hot-swap compliance. Use only in pre-charged or sequenced-insertion scenarios.