Diodes Incorporated DML3012LDC-7A

Overview

DML3012LDC from Diodes Incorporated is a single-channel smart load switch integrating an N-channel MOSFET with 4.8 mΩ typical R_ON at 5 V V_IN, adjustable slew-rate-controlled soft-start, power-good signaling, thermal shutdown, and short-circuit protection. It operates across 0.5 V to 20 V input voltage, supports up to 15 A continuous current, and delivers precise power sequencing for hot-swap and portable power domains.

For engineers reviewing the DML3012LDC datasheet, DML3012LDC pinout, DML3012LDC application, or DML3012LDC equivalent, key selection criteria include verified R_ON vs. V_IN, SR capacitor–dependent rise time tuning, PG timing correlation with slew rate, and BLEED pin integration for controlled output discharge in battery-backed systems.

Technical Context

The DML3012LDC implements a charge-pump–driven gate controller enabling ultra-low R_ON operation down to 0.5 V V_IN, with independent V_CC (3.0–5.5 V) supply for logic-level compatibility. Its SR pin accepts external capacitors (0–4.7 nF) to linearly adjust V_OUT rise time from 0.16 ms to 12.7 ms depending on V_IN, directly governing inrush current into bulk capacitance.

Fault response is hierarchical: short-circuit detection triggers immediate MOSFET turn-off when V_IN–V_BLEED ≥ 100–500 mV (V_IN-dependent), followed by automatic load bleed activation; thermal shutdown activates at +145 °C with +20 °C hysteresis and disables during EN = low to minimize standby current.

Key Specifications

Pinout & Package

Package: V-DFN3030-12 (Type B), 3.0 mm × 3.0 mm × 0.8 mm, exposed thermal pad, RoHS-compliant NiPdAu-plated terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22975DSGT and RT9742GJ5, the DML3012LDC uniquely combines 4.8 mΩ R_ON, programmable slew rate, on-chip BLEED, and PG signaling in a 3 mm × 3 mm package-enabling single-component hot-swap, battery-backed, and precision-sequenced designs without external support components.

Availability

DML3012LDC is available at Aetrix Electronics and suitable for notebook power domain switching, industrial hot-swap modules, and medical imaging subsystems requiring stable component supply, long-lifecycle availability, and guaranteed RoHS/Green compliance.

Supply support for DML3012LDC 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 company specializing in discrete, analog, and mixed-signal solutions, with design centers across Asia, Europe, and the US, and manufacturing in ISO/TS 16949-certified facilities.

The DML3012LDC belongs to Diodes' Smart Load Switch family, engineered specifically for high-current, low-R_ON, and feature-rich power-domain control in portable, computing, and industrial equipment where reliability, thermal efficiency, and board-area reduction are critical.

FAQ

What is the minimum V_IN required for reliable operation?

The DML3012LDC supports input voltages as low as 0.5 V while maintaining functional gate drive and protection features. At 0.5 V V_IN, R_ON increases to ~9 mΩ, and short-circuit threshold drops to 170 mV. Operation below 0.5 V is not guaranteed per absolute maximum ratings and may disable fault protections.

How does the BLEED pin function during normal operation?

The BLEED pin is inactive when the MOSFET is enabled; it only connects the internal 70–150 Ω resistor to V_OUT when EN is low or during fault conditions. The pin must be tied directly or via ≤1 kΩ resistor to V_OUT to enable discharge-floating BLEED disables quick-discharge functionality and may cause unsafe residual voltage.

Can the PG output drive a microcontroller GPIO directly?

Yes-the PG pin is an active-high open-drain output rated for 5 mA sink current. To interface with a 3.3 V microcontroller GPIO, use a ≥1 kΩ pullup to 3.3 V. Do not tie PG directly to V_CC or leave unconnected; if unused, PG must be tied to GND per datasheet requirement to prevent floating state.

What is the thermal performance impact of the exposed pad connection?

The V-DFN3030-12 package's exposed pad must be soldered to a ≥100 mm² copper pour connected to VIN via ≥4 thermal vias. This reduces θ_JA from 30 °C/W to ≤18 °C/W, enabling full 15 A operation at +85 °C ambient. Omitting this connection limits continuous current to ≤8 A due to junction temperature exceeding 125 °C.