Renesas SLG5NT1533V

Overview

SLG5NT1533V from Renesas Electronics is a single-channel 2.5 A load switch IC with 20 mΩ R_DS(ON) at 5 V, configurable slew rate control via external CAP pin, integrated discharge resistor (100–300 Ω), and fast turn-on time (32 μs with 0.1 nF CSLEW). It operates from 2.5 V to 5.5 V input and supports power rail switching in space-constrained mobile and portable devices.

For engineers reviewing the SLG5NT1533V datasheet, SLG5NT1533V pinout, SLG5NT1533V application, or SLG5NT1533V equivalent, key selection criteria include its ultra-small 1.0 × 1.6 mm FC-STDFN package, thermal shutdown at 125 °C, logic-level ON pin (VIH ≥ 0.85 V), and programmable slew rate for inrush current limiting in high-capacitance load scenarios.

Technical Context

The SLG5NT1533V integrates an n-channel MOSFET with fused drain (pins 3,4) and source (pins 5,6) terminals, enabling 2.5 A continuous current with low conduction loss. Its internal control circuitry implements fast state-machine activation on the ON pin and automatic thermal shutoff at 125 °C ±20 °C accuracy.

Slew rate and total turn-on time are externally set by a ceramic capacitor (CSLEW) on the CAP pin, allowing precise tuning of VS ramp rate (13–78 V/ms) and T_{Total_ON} (32–123 μs) across varying C_LOAD (up to 10 μF) and load current conditions.

Key Specifications

Pinout & Package

SLG5NT1533V uses an 8-pin FC-STDFN package measuring 1.0 × 1.6 × 0.55 mm, with fused pins for high-current paths: pins 3 & 4 (Drain), pins 5 & 6 (Source).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22916BLYFPR and NIS5132MN, the SLG5NT1533V uniquely combines programmable slew rate, integrated discharge, and thermal shutdown in a 1.0 × 1.6 mm footprint - making it optimal for compact, thermally sensitive, and high-reliability portable designs requiring precise inrush control.

Availability

SLG5NT1533V is available at Aetrix Electronics and suitable for mobile power sequencing, USB-C port management, wearable sensor hub gating, IoT edge node subsystem enable, and industrial embedded power control requiring stable component supply and long-term lifecycle support.

Supply support for SLG5NT1533V 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, and IoT markets.

The SLG5NT1533V belongs to Renesas' GreenFET family of intelligent load switches, designed specifically for energy-efficient, space-constrained portable and battery-powered systems requiring precise power rail control and robust protection.

FAQ

What is the maximum load capacitance supported by the SLG5NT1533V?

The SLG5NT1533V supports up to 10 μF of output load capacitance (C_LOAD) connected between the S pin and GND. This value is validated in the Electrical Characteristics table and confirmed across multiple test conditions including 10 μF with 2.5 A load and 0.5 nF CSLEW, yielding T_{Total_ON} ≤ 123 μs. Exceeding 10 μF may result in longer turn-on times and potential violation of slew rate specifications.

Does the SLG5NT1533V require an external discharge resistor?

No, the SLG5NT1533V does not require an external discharge resistor. It integrates an internal discharge path between the S pin and GND with a nominal resistance of 150 Ω (range 100–300 Ω), as specified in the Electrical Characteristics table. This feature ensures automatic discharge of output capacitance when the device is disabled, eliminating the need for additional components and reducing PCB area.

What is the purpose of the CAP pin on the SLG5NT1533V?

The CAP pin on the SLG5NT1533V sets the slew rate and total turn-on time of the output voltage (VS) by connecting an external ceramic capacitor (CSLEW). As shown in the datasheet's VS(SR) vs. CSLEW and T_{Total_ON} vs. CSLEW graphs, values from 0.1 nF to 0.5 nF tune VS ramp rate from 65 V/ms down to 13 V/ms and T_{Total_ON} from 32 μs to 102 μs - enabling precise inrush current control for diverse load capacitances.

Can the SLG5NT1533V operate with a 1.8 V logic controller?

Yes, the SLG5NT1533V can be directly driven by a 1.8 V logic controller. Its ON pin has a guaranteed VIH threshold of ≥0.85 V and VIL ≤0.3 V, with typical operation verified down to 0.85 V CMOS logic levels. Since 1.8 V exceeds the 0.85 V VIH requirement and maintains sufficient noise margin, no level-shifter is needed - simplifying interface design in low-voltage microcontroller systems.

What thermal derating applies to the SLG5NT1533V at elevated ambient temperatures?

The SLG5NT1533V has a θ_JA of 75 °C/W under standard FR4 PCB conditions (1 in², 1 oz. copper pads). At 70 °C ambient, its maximum allowable power dissipation before reaching 125 °C thermal shutdown is approximately 0.73 W - calculated as (125 − 70) / 75. With R_DS(ON) = 23.5 mΩ at 70 °C, this corresponds to a continuous current limit of ~1.76 A. Derating curves in the datasheet confirm this relationship across temperature and load conditions.