Renesas SLG59H1341C

Overview

SLG59H1341C from Renesas Electronics is a self-powered, high-side n-channel MOSFET load switch with 70 mΩ R_DS(ON), 1.3 A continuous current rating, reverse-current blocking, and resistor-adjustable active current limit (0.16 A with 6.49 kΩ R_SET). It operates from 2.5 V to 5.5 V and delivers fast turn-on/turn-off for power-rail switching in space-constrained portable devices.

For engineers reviewing the SLG59H1341C datasheet, SLG59H1341C pinout, SLG59H1341C application, or SLG59H1341C equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative load switches with documented functional and parametric differences.

Technical Context

The SLG59H1341C integrates a single high-side nFET with true reverse-current blocking via back-to-back FET architecture and dynamic reverse-voltage detection (V_OUT > V_IN + 50 mV triggers shutdown in ≤2 µs). Its state machine manages ACL response in ≤7 µs, OVP trip at 5.8 V (300 mV hysteresis), and thermal shutdown at 150 °C with automatic restart at 130 °C.

Control is implemented through a CMOS-compatible ON input (V_IH ≥ 1.15 V, V_IL ≤ 0.65 V), open-drain FLT output asserting within 8 ms of ACL detection, and R_SET-based current limit tuning across 0.16–1.62 A with ±10% accuracy above 0.2 A. The device uses internal charge pump and linear ramp control to manage inrush.

Key Specifications

Pinout & Package

SLG59H1341C is housed in a Pb-free, halogen-free, RoHS-compliant 9-pin WLCSP package measuring 1.21 mm × 1.21 mm × 0.586 mm (1.46 mm² footprint, 0.4 mm pitch), optimized for ultra-compact mobile designs with low θ_JA = 76 °C/W using standard 0.5 in² copper pads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22916BLYFPR and NCP45780AMUTBG, the SLG59H1341C uniquely combines resistor-programmable current limiting, 50 mV reverse-voltage detection, and integrated 5.8 V OVP in a 1.46 mm² package-enabling single-chip protection for compact, safety-critical power rails.

Availability

SLG59H1341C is available at Aetrix Electronics and suitable for mobile devices, USB-C power delivery systems, wearable electronics, and industrial sensor nodes requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for SLG59H1341C 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, automotive SoCs, analog power solutions, and timing devices for industrial and consumer applications.

The SLG59H1341C belongs to Renesas' GreenFET family of intelligent load switches, designed specifically for ultra-compact, high-efficiency power gating in battery-powered and space-constrained electronics.

FAQ

What is the minimum R_SET resistor value supported by the SLG59H1341C?

The SLG59H1341C supports R_SET values from 680 Ω to 6.49 kΩ. A 680 Ω resistor sets the active current limit to 1.62 A (typical), with ±10% accuracy. Values below 680 Ω are not specified and may cause undefined behavior or exceed internal design limits. Always use ±1% metal-film resistors for accurate current limiting in the SLG59H1341C.

Does the SLG59H1341C provide overvoltage protection on the IN pin?

No-the SLG59H1341C provides overvoltage protection only on the OUT pin (V_OUT), with a 5.8 V threshold and 300 mV hysteresis. The IN pin has an absolute maximum rating of 6 V but no active OVP circuitry. System-level input overvoltage protection must be implemented externally if required. This design choice allows the SLG59H1341C to remain functional during upstream supply transients while safeguarding downstream loads.

How does reverse-current blocking work in the SLG59H1341C during system power-down?

During system power-down, when V_OUT exceeds V_IN by >50 mV, the SLG59H1341C's internal reverse-voltage detector triggers within 2 µs and opens the FET path. When OFF, its back-to-back nFET structure inherently blocks reverse current flow, limiting leakage to ≤7 µA. This dual-stage mechanism ensures zero hold-up current from powered peripherals back into a shut-down rail-critical for battery longevity in the SLG59H1341C.

Can the SLG59H1341C be used with input voltages below 2.5 V?

No-the SLG59H1341C has a specified operating input voltage range of 2.5 V to 5.5 V. Below 2.5 V, UVLO activates (threshold ~2.2–2.4 V), disabling the FET and preventing reliable operation. Attempting to operate the SLG59H1341C at 1.8 V or other sub-2.5 V rails will result in unpredictable switching behavior, failure to turn on, or violation of absolute maximum ratings. Use only within the validated 2.5–5.5 V window.

What is the maximum output capacitance the SLG59H1341C can safely drive?

The SLG59H1341C is characterized to drive up to 220 µF of output capacitance (C_LOAD) while maintaining stable turn-on behavior and thermal integrity. Larger capacitors increase inrush stress and may extend turn-on time beyond datasheet limits or trigger current-limit mode prematurely. For C_LOAD > 100 µF, verify thermal performance under worst-case ambient and load conditions, as power dissipation scales with (V_IN − V_OUT) × I_ACL during current-limit operation in the SLG59H1341C.