Renesas SLG59M1780V

Overview

SLG59M1780V from Renesas is a single-channel N-channel high-side load switch optimized for 2.5 V to 5.5 V power rail control, delivering 4 A continuous current with ultra-low 4.2 mΩ R_DS(ON) at V_IN = 5 V and T_A = 25 °C. It integrates a charge pump, capacitor-controlled slew rate, output discharge, and protection features including UVLO, ACL, SCL, and thermal shutdown. It is used in notebook PCs and enterprise networking equipment for reliable, space-efficient power sequencing.

For engineers reviewing the SLG59M1780V datasheet, SLG59M1780V pinout, SLG59M1780V application, or SLG59M1780V equivalent, key selection criteria include its 4.2 mΩ R_DS(ON), -40 °C to +85 °C industrial temperature rating, STQFN-16 (1.6 × 2.5 mm) package, capacitor-set slew rate, and integrated output discharge circuit - all critical for low-loss, thermally robust high-side switching in compact portable and embedded systems.

Technical Context

The SLG59M1780V employs an integrated charge pump to drive the N-channel MOSFET gate above V_IN, enabling full enhancement across its 2.5–5.5 V input range. Its capacitor-controlled slew rate ensures controlled inrush current during turn-on, while the internal output discharge FET actively pulls V_OUT to GND when disabled.

Protection architecture includes undervoltage lockout (UVLO) below ~0.9 V V_IN, fixed active current limit (ACL) at 7 A, fixed short-circuit current limit (SCL), and thermal shutdown (TSD) with auto-restart. No current monitor or power-good signaling is implemented.

Key Specifications

Pinout & Package

SLG59M1780V is housed in a 16-pin STQFN package (1.6 mm × 2.5 mm, 0.5 mm pitch) with wettable flanks and exposed thermal pad. The package supports high-current routing and efficient heat dissipation via PCB thermal vias.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side load switch applications.

Compared with SLG59M1709V and SLG59M1713V, the SLG59M1780V uniquely balances 4 A capability, 4.2 mΩ conduction loss, and integrated output discharge in a 4 mm² footprint - making it the optimal choice for industrial-grade, high-density power sequencing where both current capacity and controlled turn-off timing are mandatory.

Availability

SLG59M1780V is available at Aetrix Electronics and suitable for enterprise networking switches, notebook PC power rails, and multifunction printer subsystems requiring stable component supply, industrial temperature qualification, and ultra-low R_DS(ON) performance.

Supply support for SLG59M1780V 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

Renesas Electronics Corporation is a global semiconductor leader delivering trusted embedded design innovation, with expertise in microcontrollers, analog, power management, and timing solutions.

The GreenFET family, including SLG59M1780V, was designed specifically for high-efficiency, high-reliability high-side power rail control in portable, enterprise, and industrial systems - emphasizing ultra-low R_DS(ON), small footprint, and integrated protection.

FAQ

What is the maximum continuous current rating for SLG59M1780V?

The SLG59M1780V is rated for 4 A continuous current under typical PCB thermal conditions (2-layer board, 1 oz copper, 2 cm² thermal pad). Derating applies above +85 °C ambient or with reduced copper area; full 4 A operation is guaranteed from -40 °C to +85 °C with adequate heatsinking. The device also features fixed 7 A active current limit and short-circuit protection.

Does SLG59M1780V support adjustable current limiting?

No, SLG59M1780V implements a fixed 7 A active current limit (ACL) and fixed short-circuit current limit (SCL); neither is adjustable via external components. Unlike variants such as SLG59M1717V or SLG59M1714V, SLG59M1780V does not support resistor-based ACL(R) configuration - its protection thresholds are factory-trimmed and non-configurable.

Is output discharge functionality enabled by default on SLG59M1780V?

Yes, SLG59M1780V has output discharge enabled by default. The DIS pin is internally pulled high, activating the internal 120 Ω discharge FET whenever EN is low. To disable discharge, the DIS pin must be driven LOW externally - no pull-down resistor is required, as the pin has no internal bias when actively controlled.

What package type and dimensions does SLG59M1780V use?

SLG59M1780V uses a 16-pin STQFN package measuring 1.6 mm × 2.5 mm with 0.5 mm pitch and wettable flanks. The exposed thermal pad (TP1–TP8) occupies the center-bottom area and must be soldered to a PCB ground plane with ≥6 thermal vias for optimal thermal performance and current handling.

Does SLG59M1780V provide power-good or fault signaling?

No, SLG59M1780V does not include power-good (PG) or fault (FAULT) signaling. Pin 5 (labeled PG in the pinout) is a no-connect (NC) terminal - the device lacks open-drain status outputs. For applications requiring fault reporting, consider SLG59M1717V (PG output) or SLG59M1707V (FAULT output), both in the same STQFN-16 package.