Chaves de Distribuição de Energia
Produtos (3)
ITS4090QEPDXUMA1 - 90mΩ Quad Smart High-Side Switch | Infineon
The Infineon ITS4090QEPDXUMA1 is a 90 mΩ quad-channel smart high-side power switch in a PG-TSDSO-14 exposed-pad package, delivering four independent 750 mA outputs from a -0.3 V to 45 V supply range. It belongs to the PROFET 24V/48V family and integrates protection and diagnostic feedback, providing a single-IC solution for switching resistive, capacitive, and inductive industrial loads. A smart high-side switch is a power-distribution semiconductor that sits between a logic-level microcontroller and a ground-referenced load, switching the positive rail rather than ground. Compared with discrete MOSFETs and fuses, these devices integrate over-current, over-temperature, over-voltage, and short-circuit protection, plus a current-sense diagnostic pin. They sit in the hierarchy: load driver -> power distribution switch -> smart high-side switch -> power management IC, replacing legacy electro-mechanical relays and fuses in modern industrial and automotive designs. Key features include typical RDS(ON) of 90 mΩ per channel (140 mΩ at Tj = 125 °C), 750 mA nominal continuous current per channel, integrated reverse-battery protection via GND-path resistor, and a dedicated IS diagnostic pin that delivers a current proportional to load current for fault and load monitoring. The device supports PWM operation up to 1 kHz and offers 4 independent input pins for direct MCU control. Architecturally, the ITS4090Q-EP-D uses four vertical N-channel DMOS output stages driven by charge-pump gate drivers, a central bandgap reference for current sensing, and on-chip thermal sensors. The exposed-pad PG-TSDSO-14 package provides a thermal resistance suitable for 4 × 750 mA simultaneous operation when soldered to adequate copper area, removing the need for external heat sinking in most industrial enclosures. Typical applications include 24 V industrial automation outputs (PLC digital output modules, solenoid and valve drivers), 24 V/48 V building-automation relays and lighting, automotive body controllers for low-power loads, and replacement of electromechanical relays in safety-critical subsystems requiring diagnostic feedback. The wide supply range also tolerates 24 V truck and 48 V mild-hybrid bus voltages. When designing with this part, observe the datasheet recommendation of a 150 Ω resistor between the GND pin and ground for reverse-polarity protection, and ensure PCB copper area keeps junction temperature below 150 °C at maximum concurrent channel load. The IS diagnostic pin requires an external sense resistor and is not intended to drive an ADC directly. This page synthesizes distributor pricing, drop-in PROFET alternatives, and application guidance not collected on any single manufacturer or distributor page, supporting faster selection for industrial and automotive load-driving designs.
TPS2054ADR - Quad USB Power Switch 0.5A | Texas Instruments
The Texas Instruments TPS2054ADR is a quad-channel USB power-distribution switch integrating four N-channel MOSFET high-side power switches with 0.5 A per-channel continuous load capability, 0.9 A overcurrent limit, 2.7 V to 5.5 V input range, and 80 mOhm typical on-resistance, housed in a 16-pin SOIC package supplied on tape and reel. A power-distribution switch, also called a load switch or high-side switch, is a power management IC that controls the delivery of a supply rail to a downstream load. In the system hierarchy it sits between a voltage regulator or USB VBUS source and the port or peripheral, providing controlled turn-on, fault isolation, and overcurrent protection. Power-distribution switches are a subclass of load drivers within the broader PMIC (power management IC) category, and USB power switches like the TPS2054ADR are specifically qualified for bus-powered port applications. Key features include four independently controlled switches in a single package, which reduces board area and BOM count versus four single-channel devices; a precision 0.9 A overcurrent limit per channel that protects upstream supplies during short-circuit events; controlled rise times that limit inrush current when charging heavy capacitive loads; and active-high enable logic with a fault-reporting output for system monitoring. The TPS2054A family is intended for applications where heavy capacitive loads and short circuits are likely to be encountered, according to the manufacturer product overview. Internal charge-pump驱动 of the N-channel MOSFET gates ensures low, flat on-resistance across the 2.7 V to 5.5 V input range, minimizing voltage drop at full 0.5 A load. Thermal and overcurrent protection circuitry shuts the affected channel down under fault conditions and auto-restarts when the fault clears, enabling robust hot-swap behavior in USB ports. Typical applications include USB host and hub port power switching (pairing naturally with hub controllers such as the TUSB8041), multi-port peripheral power distribution, hot-plug card-slot power control, and general-purpose 2.7 V to 5.5 V rail load switching in industrial and consumer systems. When designing with this device, decouple the IN pin with a low-ESR ceramic capacitor close to the package, and size output capacitors so inrush current stays within the 0.9 A current-limit threshold during turn-on. This page synthesizes distributor pricing, verified drop-in alternatives, comparison data, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-03.
TPS22995RZFR - 3.8A, 18mΩ Load Switch | TI | Power Distribution
The Texas Instruments TPS22995RZFR is a single-channel N-channel load switch with a maximum continuous current of 3.8 A, a typical on-resistance of 18 mΩ, and an input operating voltage range of 0.4 V to 5.5 V, housed in a 6-pin WQFN-HR (RZF) package measuring 1.25 mm x 0.85 mm. A load switch is a power management IC that sits between a power rail and its load, using an internal MOSFET pass element to connect or disconnect the rail under logic control. Within the power management hierarchy (load switch -> power distribution switch -> power management IC), load switches handle controlled power sequencing, inrush limiting, and rail isolation in systems where a simple regulator cannot provide on/off control. The TPS22995 belongs to this load switch category and is optimized for low on-resistance and configurable startup behavior. Key features include the 0.4 V to 5.5 V VIN range, a VBIAS supply range of 1.5 V to 5.5 V that keeps the internal gate drive strong even when VIN is very low, and adjustable slew rate control through an external capacitor on the CT pin. The adjustable rise time minimizes inrush current when charging large bulk capacitance, and the device provides overtemperature protection. An active-high ON pin enables straightforward GPIO interfacing. Technically, the TPS22995 uses an N-channel MOSFET pass element with an internal charge-pump-derived gate drive supplied by VBIAS. This architecture delivers 18 mΩ typical on-resistance while maintaining low dropout at 3.8 A loads, and the RC-programmable CT pin allows designers to trade startup time against inrush current precisely. Typical applications include powering core rails of processors and FPGAs, peripheral rail switches in smartphones and tablets, SSD and storage subsystem power sequencing, and battery-powered portable devices where controlled power-up extends battery life. A key design consideration: choose the CT capacitor value so the 10%-90% rise time is long enough to limit inrush below the 3.8 A maximum continuous current when switching large capacitive loads. Oversizing the capacitor unnecessarily slows rail bring-up during power sequencing. This page synthesizes distributor pricing, drop-in alternative data, and practical design notes not found in the manufacturer datasheet alone.