ITS4141NHUMA1 - 700mA Smart High-Side Switch | Infineon PROFET
MPN: ITS4141NHUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.05 | $2.05 |
| 10 | $1.88 | $18.80 |
| 100 | $1.62 | $162.00 |
| 500 | $1.38 | $690.00 |
| 1,000 | $1.15 | $1,150.00 |
| 3,000 | $0.95 | $2,850.00 |
ITS4141NHUMA1 Overview
What is a high-side power switch? A high-side power switch is a type of power distribution switch (sub-category: load driver) that sits between the positive supply rail and the load, controlling current flow by turning the integrated MOSFET on and off in response to a logic-level input. Within the broader taxonomy, the high-side switch belongs to: PMIC -> Power Distribution Switch -> Load Driver -> High-Side Switch. Infineon's PROFET family is the industry-leading implementation using a vertical N-channel FET for low R_DS(on) and high energy robustness.
Key features include short-circuit protection with current limitation, overload protection, overvoltage protection including load-dump, undervoltage shutdown with auto-restart and hysteresis, plus an open-drain status diagnostic pin. The 200 mΩ R_DS(on) at 25 °C minimizes conduction losses, while the integrated charge pump drives the gate of the N-channel FET for true high-side switching with a standard 3.3 V or 5 V CMOS logic input. PG-SOT223-4 provides a low thermal resistance path via the central tab, enabling continuous 700 mA operation without external heatsinking.
The architecture is built on Infineon's Smart Power technology - a vertical DMOS output stage with monolithic CMOS control logic. The diagnostic pin reports open-load, overtemperature, and overcurrent events back to the microcontroller, while the auto-restart behavior allows the part to recover automatically once a fault clears, reducing firmware complexity in PLC and process-control applications.
Typical applications include 24 V industrial PLC digital outputs, factory-automation I/O modules, sensor and actuator power distribution, building-automation relay drivers, and battery-protected low-side-of-24V systems. The wide V_S range with load-dump tolerance makes it especially suited for 24 V truck and bus body-controller applications.
When designing with this part, respect the 700 mA continuous current limit and place the tab solder pad on at least 1 cm² of copper pour to keep R_thJA low enough for the SOA. The status pin requires a pull-up resistor and is open-drain; ensure input transitions are below 5 V CMOS thresholds for noise-immune switching.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
Drop-in alternatives for ITS4141NHUMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ITS4141NHUMA1 (same form factor and footprint) — differing in Package, Continuous Load Current, Topology, Output Configuration, Diagnostic Output.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BTS4141NHUMA1
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →ITS4140NHUMA1
✅ Drop-In✓ In Stock
$0.72 / Unit
View Datasheet →BTS4140NHUMA1
✅ Drop-In✓ In Stock
$0.58 / Unit
View Datasheet →ITS4141NHUMA1 Maximum Ratings & Electrical Characteristics
| Topology | High-side N-channel MOSFET switch with charge pump |
| Output Configuration | 1:1 (single channel) |
| Load Supply Voltage (V_S) | -10 V to 48 V (operational); 12 V to 45 V nominal per datasheet |
| Continuous Output Current | 700 mA |
| On-State Resistance R_DS(on) | 200 mΩ (typ, 25 °C) |
| Input Logic Level | CMOS-compatible 3.3 V / 5 V |
| Overvoltage Protection | Load-dump tolerant |
| Short-Circuit Protection | Current limitation |
| Undervoltage Shutdown | Auto-restart with hysteresis |
| Status Output | Open-drain diagnostic pin |
| Operating Temperature | -40 °C to +85 °C |
| Package | PG-SOT223-4 (TO-261-4, 3 leads + tab) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Product Family | PROFET Industrial (ITS41x1N) |
ITS4141NHUMA1 Pin Configuration
| Pin 1 | IN — Logic-level input (3.3 V / 5 V CMOS) |
| Pin 2 | GND — Ground reference |
| Pin 3 | V_S — Load supply voltage (battery / 24 V rail) |
| Pin 4 | OUT (Tab) — Switched output (drain); central tab |
Safe Operating Area (DC)
Typical Applications
ITS4141NHUMA1 is suitable for 6 applications: 24 V PLC Digital Output Module, Industrial Sensor Power Distribution, Building Automation Relay Driver, 24 V Truck / Bus Body Controller, Process Control Valve Actuator, Battery-Backed 24 V System Power Switch.
24 V PLC Digital Output Module
The ITS4141NHUMA1 is purpose-built for 24 V PLC digital output cards where each channel must switch a solenoid, relay coil, or indicator lamp to ground-referenced loads. Its 200 mΩ typical R_DS(on) at 25 °C keeps conduction loss below 0.1 W per channel at 700 mA, and the -10 V to 48 V V_S range absorbs inductive kickback and 24 V load-dump transients without external TVS clamps. The open-drain status pin feeds back to the PLC SoC for wire-break and overload diagnostics, satisfying IEC 61131-2 industrial I/O requirements. Recommend pairing with a TLE4296 5 V LDO for MCU rail and a BTS3000SL for higher-current outputs.
Recommended
Industrial Sensor Power Distribution
In factory-automation I/O nodes, the ITS4141NHUMA1 powers 4-20 mA loop sensors, proximity switches, and encoder supplies from a shared 24 V rail. Each output's current limit (around 0.7-1.5 A depending on temperature) protects the harness against sensor short circuits, while the undervoltage auto-restart with hysteresis allows clean recovery after brownout events. The 200 mΩ R_DS(on) drops only ~140 mV at 700 mA, preserving compliance headroom for the sensor's regulated supply. The PG-SOT223-4 footprint is ideal for high-density I/O cards where multiple switches must share a small PCB area.
Recommended
Building Automation Relay Driver
The ITS4141NHUMA1 drives 24 V coil relays and contactor coils in HVAC, lighting, and access-control panels. Its 700 mA continuous rating handles most small-signal relays directly, while the open-drain status pin can be used to confirm the relay actually pulled in (via coil current sense). Load-dump tolerance to 48 V protects the switch from the inductive kick produced when the relay de-energizes, and the auto-restart on thermal shutdown prevents latched fault conditions during commissioning.
Recommended
24 V Truck / Bus Body Controller
The ITS4141NHUMA1 is widely used in 24 V commercial-vehicle body controllers where it switches lighting, door locks, mirror heaters, and HVAC actuators from a 24 V truck battery bus. The -10 V to 48 V V_S rating covers jump-start (24 V -> 28 V), load-dump (up to 48 V per ISO 7637-2), and reverse-battery (-10 V) conditions without external protection. Its 700 mA continuous and ~1 A peak (with thermal foldback) suit most cabin loads, and the diagnostic pin reports open-load wiring faults to the BCM ECU.
Recommended
Process Control Valve Actuator
In process-control valve assemblies and small solenoid valves, the ITS4141NHUMA1 provides the high-side switch for 24 V DC solenoids controlling fluid or pneumatic flow. The 700 mA rating suits standard 5-10 W valve coils, and the short-circuit current limit protects wiring in hazardous-area enclosures. Open-drain status confirms the valve is actually energized - critical for fail-safe system diagnostics. The -40 °C to +85 °C operating range handles outdoor and refrigeration installations.
Recommended
Battery-Backed 24 V System Power Switch
The ITS4141NHUMA1 acts as a load-disconnect switch on 24 V battery-backed systems such as UPS, security panels, and emergency lighting. Its low 200 mΩ R_DS(on) minimizes parasitic drain on the battery when the system is in standby, while the wide V_S range and reverse-battery tolerance protect against wiring faults. The auto-restart on undervoltage prevents lockout when the battery recovers. Pair with the ITS4141N as a primary switch and a Schottky diode for reverse-current blocking if required.
Recommended
Recommended Products Summary
Engineering reference data for ITS4141NHUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS4141NHUMA1 | ITS4140NHUMA1 | BTS4140NHUMA1 | BSP752RXUMA2 |
|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-SOT223-4 (TO-261-4) | PG-SOT223-4 - same | PG-SOT223-4 - same | PG-SOT223-4 - same | PG-DSO-8 - different |
| Topology | High-side N-channel (charge pump) | High-side N-channel | High-side N-channel | High-side N-channel | High-side N-channel |
| Continuous Output Current | 700 mA | 700 mA | 700 mA | 600 mA (-14%) | 700 mA |
| R_DS(on) (typ at 25 °C) | 200 mΩ | ~250 mΩ (+25%) | 200 mΩ | ~300 mΩ (+50%) | ~250 mΩ |
| Load Supply V_S Range | -10 V to 48 V | -10 V to 48 V | Narrower (5 V to 18 V) | -10 V to 48 V | -10 V to 48 V |
| Load-Dump Tolerance | Yes | Yes | No | Yes | Yes |
| Status / Diagnostic Pin | Yes (open-drain) | Yes (open-drain) | Yes (open-drain) | Yes (open-drain) | Yes (open-drain) |
| Automotive Grade (AEC-Q100) | Industrial (no) | Industrial | Industrial | Industrial | Industrial |
| Unit Price (qty 100, as of 2026-09-11) | $1.62 | ~$1.55 | ~$1.50 | ~$1.30 | ~$1.80 |
Key Differentiators
- Widest V_S operating range in the PG-SOT223-4 PROFET family (vs ITS4140NHUMA1)
- Lower R_DS(on) at same current rating (vs BTS4140NHUMA1)
- Smaller PCB footprint than classic PROFET packages (vs BSP752RXUMA2)
Design Notes
Estimated: at 700 mA continuous, R_DS(on) 200 mΩ, and V_S = 24 V, conduction loss is P = I²R = 0.7² × 0.2 = 0.098 W; with thermal foldback the PG-SOT223-4 (θJA ~80 K/W on 1 cm² copper) sustains this comfortably. However, during a short-to-ground the current limit engages at ~1-2 A for milliseconds and the part dissipates P_short = I_lim × V_S. Always solder the central tab to a continuous copper pour (≥1 cm²) to keep R_θJA low and avoid thermal shutdown on inductive kick recovery.
Place the status pin pull-up resistor close to the MCU GPIO to minimize noise pickup on long traces. Add a 100 nF ceramic decoupling capacitor directly on the V_S pin to the tab, plus a 1 µF bulk cap on the shared 24 V rail. The IN pin has an internal pull-down, but if the input trace runs more than 25 mm in electrically noisy industrial environments, add a 1 nF filter cap to ground to reject 50/60 Hz and motor-commutation EMI. Keep the ground return path directly under the V_S trace to minimize parasitic inductance in the discharge loop.
Do not float the input pin - if left open the part defaults to OFF (internal pull-down) but an open trace can pick up noise and self-trigger the output. Do not exceed the 48 V absolute maximum on V_S even momentarily - load-dump on a poorly-regulated 24 V truck battery can spike well above 48 V. The status pin is open-drain and requires a pull-up; never tie it directly to V_S without a current-limiting resistor. Finally, when paralleling multiple ITS4141NHUMA1 outputs to a single load, ensure all input pins are driven simultaneously to avoid circulating current between channels.
Route the high-current OUT trace (drain tab) on the top layer with a wide trace or polygon pour - the tab is the main thermal path. Use thermal vias under the central tab to inner-layer copper spreads. Place the input and status traces on the opposite side of the board from the V_S/OUT loop to minimize capacitive coupling. If the part sits near a switching converter, keep at least 5 mm clearance between the ITS4141NHUMA1 ground pour and the converter's switching node to avoid ground-bounce false triggering of the input comparator.
Compliance Information
RoHS and REACH compliant per Infineon product page. Halogen-free per Infineon PROFET datasheet. Not AEC-Q100 qualified - for automotive use, look at the ITS4141N-Q1 sibling. Conflict-minerals statement compliant with Section 1502 of the Dodd-Frank Act.
