Renesas SLG59H1009V

Overview

SLG59H1009V from Renesas Electronics is a high-voltage, self-powered NMOS load switch optimized for 4.5 V to 22 V power-rail switching up to 4 A continuous current. It delivers stable 13.1 mΩ R_DSON across voltage and temperature, integrates VIN overvoltage lockout selection (SEL0/SEL1), and provides an analog MOSFET current monitor output (10 µA/A) for real-time load diagnostics in point-of-load distribution.

For engineers reviewing the SLG59H1009V datasheet, SLG59H1009V pinout, SLG59H1009V application, or SLG59H1009V equivalent, this device supports precise inrush control via external CAP capacitor, dual-stage current limiting (resistor-adjustable active limit + internal short-circuit protection), fast 4 kΩ output discharge, and open-drain FAULT signaling for system-level fault management.

Technical Context

The SLG59H1009V implements a proprietary copper-pillar interconnect NMOS FET architecture enabling low thermal resistance (θ_JA = 40 °C/W) and stable R_DSON (<0.05 mΩ/V vs. VIN, <0.06 mΩ/°C vs. temperature). Its state machine governs turn-on slew rate (set by external 10–20 nF CAP), active current limit response (120 µs), and automatic SOA protection triggered at >5 W dissipation for >2.5 ms.

Protection logic includes VIN OVLO (configurable 22.7–25.2 V via SEL0/SEL1), thermal shutdown (125 °C) with hysteresis (restart at 100 °C), and dual-mode current limiting: resistor-set active limit (4.2–4.9 A with 21 kΩ RSET) and fixed internal short-circuit limit (0.5 A). The IOUT monitor operates linearly from 0.5 A to 4 A with 45 µs response time and 0.5–4 V compliance range.

Key Specifications

Pinout & Package

SLG59H1009V is housed in a RoHS-compliant, 1.6 × 3.0 mm STQFN package with 0.40 mm pitch and fused VIN/VOUT power pads for low-inductance, high-current routing. Thermal performance is enhanced by copper pillar interconnects and direct die-to-pad thermal path.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22992DRLR and RT9759GJ6, SLG59H1009V uniquely combines 22 V operation, user-selectable OVLO, and integrated 10 µA/A current monitoring - enabling safer, more observable power sequencing in high-reliability industrial and telecom designs without adding external sensing components.

Availability

SLG59H1009V is available at Aetrix Electronics and suitable for power-rail switching, multifunction printers, and telecommunications equipment requiring stable component supply, long-term lifecycle support, and industrial-grade (-40 °C to 85 °C) reliability.

Supply support for SLG59H1009V 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 microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.

The SLG59H1009V belongs to Renesas' High Voltage GreenFET family, engineered specifically for robust, high-current load switching in demanding industrial and telecom power architectures with integrated protection and telemetry.

FAQ

What is the maximum input voltage the SLG59H1009V can safely handle?

The SLG59H1009V supports continuous operation up to 22 V, with absolute maximum rating of 30 V. Its VIN overvoltage lockout is configurable between 22.7 V and 25.2 V using SEL0/SEL1 pins - ensuring reliable shutdown before reaching destructive levels. Transient pulses up to 32 V (≤0.1 s) are tolerated per absolute ratings, but sustained operation above 22 V is not recommended.

How does the SLG59H1009V implement inrush current control?

The SLG59H1009V uses an external capacitor on the CAP pin (10–20 nF) to set VOUT slew rate and total turn-on time. This capacitor controls the internal linear ramp generator, producing monotonic VOUT rise (0.5–3.9 V/ms) that prevents peak inrush currents from exceeding the active current limit. The design eliminates need for external RC networks or complex timing circuits.

Can the SLG59H1009V be used without connecting the RSET pin?

No - the RSET pin must be connected to a 1%-tolerance 21 kΩ resistor to ground to configure the active current limit at 4.5 A. Leaving RSET unconnected disables active current limiting, leaving only the internal 0.5 A short-circuit clamp. This compromises system-level fault response and violates recommended operating conditions per the datasheet.

What is the purpose of the IOUT pin on the SLG59H1009V?

The IOUT pin delivers a precision 10 µA/A analog current proportional to the main MOSFET load current (IDS), linear from 0.5 A to 4 A. When routed through a ground-referenced resistor (e.g., 84.5 kΩ), it generates a 0.5–4 V voltage for ADC sampling - enabling real-time load monitoring, predictive maintenance, and system-level power budgeting without shunt resistors or signal conditioning.

Does the SLG59H1009V require external capacitors, and where should they be placed?

Yes - SLG59H1009V requires ≥47 µF/50 V low-ESR capacitors at both VIN (pins 4–8) and VOUT (pins 9–13), placed as close as possible to the respective pins. A 180 pF capacitor is also required from IOUT to GND for stability, and the CAP pin needs a 10–20 nF ceramic capacitor. These placements minimize parasitic inductance and ensure stable regulation and protection response.