Renesas SLG59M1658V

Overview

SLG59M1658V from Renesas Electronics is a single-channel nFET load switch with 17 mΩ R_DS(ON), 2.5 A continuous current rating, and integrated two-level overcurrent/thermal protection. It operates from 2.5 V to 5.5 V V_DD, supports output voltages as low as 0.9 V, and features user-configurable slew rate via external capacitor on the CAP pin. Used for power rail switching in portable computing devices.

For engineers reviewing the SLG59M1658V datasheet, SLG59M1658V pinout, SLG59M1658V application, or SLG59M1658V equivalent, key selection criteria include its ultra-small 1.0 mm × 1.6 mm STDFN-8L package, logic-level ON pin (VIH = 0.85 V), active + short-circuit current limiting modes, and guaranteed operation up to 125°C ambient.

Technical Context

The SLG59M1658V integrates a proprietary CuFET n-channel MOSFET with stable 17 mΩ R_DS(ON) across -40°C to 125°C and 2.5–5.5 V V_DD. Its dual-mode current limiting distinguishes behavior based on source voltage: active limit (4.5 A) when V_S > 250 mV, short-circuit limit (~500 mA) when V_S < 250 mV.

Thermal shutdown activates at 150°C (THERMON) and releases at 130°C (THERMOFF), with 1 ms response time. Slew rate and total turn-on time are externally adjustable via a ceramic capacitor (≥1.5 nF) on the CAP pin, enabling precise inrush control for capacitive loads up to 500 µF.

Key Specifications

Pinout & Package

SLG59M1658V is housed in an RoHS-compliant, 1.0 mm × 1.6 mm STDFN-8L package with exposed thermal pad (not electrically connected). Drain and source terminals each use two fused pins for low-inductance, high-current conduction paths and improved thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22916BLYFPR and NCP45780AMUTBG, the SLG59M1658V uniquely combines dual-mode current limiting, active output discharge, and 17 mΩ R_DS(ON) in a 1.6 mm² footprint - making it optimal for thermally constrained, fault-resilient portable power architectures.

Availability

SLG59M1658V is available at Aetrix Electronics and suitable for notebook, tablet, smartphone, and wearable power rail switching applications requiring stable component supply, guaranteed 125°C operation, and robust fault handling.

Supply support for SLG59M1658V 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, and connectivity solutions.

The SLG59M1658V belongs to Renesas' GreenFET family of intelligent load switches - engineered specifically for high-efficiency, space-constrained portable electronics requiring precision power sequencing and comprehensive fault protection.

FAQ

What is the minimum input voltage supported by the SLG59M1658V for powering downstream loads?

The SLG59M1658V supports output voltages as low as 0.9 V while operating from a 2.5–5.5 V V_DD supply. This allows it to regulate power to low-voltage subsystems such as I/O peripherals or memory interfaces without requiring additional DC-DC conversion stages. The SLG59M1658V maintains stable R_DS(ON) and protection functionality across this full output range.

Does the SLG59M1658V require an external capacitor on the CAP pin for basic operation?

Yes - the CAP pin must be connected to GND via a low-ESR ceramic capacitor (≥1.5 nF, ≥10 V rated) to establish defined slew rate and prevent uncontrolled inrush current. Without this capacitor, the SLG59M1658V may exhibit rapid, unregulated turn-on that risks voltage droop or EMI issues. The SLG59M1658V datasheet specifies 4 nF as a typical value for balanced timing and safety.

How does the SLG59M1658V handle a short-circuit event on its output (VS)?

During a short circuit (V_S < 250 mV), the SLG59M1658V engages Short Circuit Current Limit (I_SCL) at ~500 mA and simultaneously monitors die temperature. If thermal shutdown triggers at 150°C, the FET turns off completely; recovery occurs only after cooling to 130°C. This dual-layer response protects both the SLG59M1658V and downstream circuitry without latch-up. The SLG59M1658V does not require external fault signaling circuitry.

Can the SLG59M1658V be used with a 1.8 V logic controller?

Yes - the ON pin has a guaranteed VIH threshold of 0.85 V, making it fully compatible with 1.8 V CMOS outputs. The SLG59M1658V also includes an internal ~4 MΩ pull-down resistor, ensuring reliable OFF-state default even if the driving MCU is in reset or high-impedance mode. No level shifter is needed for direct interface with common application processors.

What is the maximum recommended output capacitance (C_LOAD) for the SLG59M1658V?

The SLG59M1658V is characterized and specified for C_LOAD up to 500 µF, as confirmed in the Electrical Characteristics table. Larger values may extend turn-on time beyond datasheet guarantees and increase stress during fault conditions. For designs exceeding 500 µF, verify stability using the SLG59M1658V's adjustable slew rate (via CAP pin capacitor) and confirm thermal performance under worst-case load transients. The SLG59M1658V's discharge resistance remains effective regardless of C_LOAD size.