ITS4100SSJNXUMA1 - 2A Smart High-Side Power Switch | Infineon
MPN: ITS4100SSJNXUMA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.38 | $138.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.02 | $1,020.00 |
| 2,500 | $0.89 | $2,225.00 |
ITS4100SSJNXUMA1 Overview
What is a high-side power switch? A high-side power switch is a semiconductor that sits between the load and the positive supply rail, controlling current flow using an N-channel MOSFET in a high-side configuration. It belongs to the broader category of Power Distribution Switches (PDSw) under Power Management ICs (PMIC). The MINI-PROFET family from Infineon integrates the FET, gate driver, and protection logic into one IC, replacing discrete MOSFET + driver + fuses + TVS solutions and reducing PCB area while improving diagnostic capability.
Key features include a typical on-state resistance (RDS(on)) optimized for low conduction loss, current limitation with auto-retry, fast demagnetization of inductive loads (suitable for solenoids, relays, valves), and an analog/digital status feedback pin for fault reporting to the host microcontroller. The PG-DSO-8 exposed-pad package provides a low thermal resistance path, enabling sustained 2 A operation without external heatsinking in typical 12 V automotive loads.
Architecturally, the ITS4100SSJNXUMA1 uses a vertical DMOS output structure co-packaged with CMOS control logic. The vertical FET topology minimizes specific on-resistance per unit area versus lateral MOSFETs, while the integrated charge pump generates the gate drive voltage required by the N-channel high-side configuration. Built-in thermal sensors cycle the output off and on (restart behavior) when junction temperature exceeds the shutdown threshold, preventing catastrophic failure during prolonged short-circuit events.
Typical applications include automotive body electronics (door modules, seat control, lighting drivers), industrial 24 V PLC outputs, relay and solenoid replacement, heating elements, and any 12 V/24 V load requiring eFuse-style protection. The diagnostic output enables OBD-II-style fault reporting in automotive networks.
When designing with this part, ensure the load's inrush current stays below the current-limit threshold or use the soft-start feature (if enabled by external configuration). The exposed pad must be soldered to a sufficient copper pour to achieve rated thermal performance; per JEDEC JESD51, a minimum 1 sq. inch of 1 oz copper on a 4-layer board is typical.
This page synthesizes distributor pricing, drop-in alternative cross-references, and practical design notes that complement the official Infineon datasheet, offering information gain not available on any single distributor product page.
Drop-in alternatives for ITS4100SSJNXUMA1 β 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 ITS4100SSJNXUMA1 (same form factor and footprint) β differing in Package, Product Type, Diagnostic Output, Continuous Load Current, Operating Temperature.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
BTS3011TEATMA1
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View Datasheet βBTS3046SDRATMA1
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View Datasheet βITS4200SMEPHUMA1
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$0.86 / Unit
View Datasheet βBTS4141NHUMA1
β Drop-Inβ In Stock
$1.02 / Unit
View Datasheet βBTS462TATMA1
β Drop-Inβ In Stock
$1.38 / Unit
View Datasheet βBSP78HUMA1
β Drop-Inβ In Stock
$0.62 / Unit
View Datasheet βITS4100SSJNXUMA1 Maximum Ratings & Electrical Characteristics
| Product Type | High-Side Power Switch |
| Topology | 1:1 N-Channel High-Side |
| Maximum Continuous Load Current | 2 A |
| Overvoltage Protection (Load Dump) | Yes |
| Overload Protection | Yes |
| Current Limitation | Yes |
| Short Circuit Protection | Yes |
| Thermal Shutdown with Restart | Yes |
| Reverse Battery Protection | Yes |
| Fast Demagnetization of Inductive Loads | Yes |
| Status / Diagnostic Output | Yes |
| Package | PG-DSO-8 (exposed pad) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| AEC-Q100 Qualification | Yes (Automotive Grade) |
ITS4100SSJNXUMA1 Pin Configuration
| Pin 1 | OUT β Power output to load (high-side switched) |
| Pin 2 | VBB β Battery supply input (12 V / 24 V) |
| Pin 3 | GND β Ground |
| Pin 4 | IN β Logic input (CMOS-compatible control) |
| Pin 5 | ST β Status / diagnostic output |
| Pin 6 | NC β Not connected (per datasheet) |
| Pin 7 | NC β Not connected (per datasheet) |
| Pin 8 | NC β Not connected (per datasheet) |
| Pin PAD | Exposed Pad β Thermal pad - connect to GND plane for heatsinking |
Typical Applications
ITS4100SSJNXUMA1 is suitable for 6 applications: Automotive Body Electronics - Lighting, Automotive Relay and Solenoid Replacement, Industrial 24V PLC Output Module, Heating Element Driver (Seat Heater, Mirror Heater), Power Distribution eFuse Replacement, LED Module Driver for Automotive Signalling.
Automotive Body Electronics - Lighting
The ITS4100SSJNXUMA1 drives automotive exterior and interior lamps including turn signals, brake lights, and interior dome lighting from a 12 V battery rail. Its 2 A continuous rating covers most bulb and LED-module loads up to 24 W. Integrated load-dump protection per ISO 7637-2 and reverse-battery protection eliminate the need for external TVS diodes, while the diagnostic status pin reports open-circuit or short-circuit faults to the BCM (body control module) for OBD-II compliance. The PG-DSO-8 package with exposed pad handles the thermal load of incandescent inrush currents.
Recommended
Automotive Relay and Solenoid Replacement
Use the ITS4100SSJNXUMA1 to replace electromechanical relays driving solenoids, valves, and small motors in 12 V systems. The integrated fast-demagnetization circuit clamps inductive kickback safely, protecting both the IC and the load. Compared to discrete MOSFET + flyback diode solutions, this single-chip approach saves PCB area, eliminates the diode, and provides diagnostic feedback on coil open/short conditions. Typical loads include door-lock actuators, transmission shift solenoids, and HVAC blend-door motors.
Recommended
Industrial 24V PLC Output Module
The ITS4100SSJNXUMA1 serves as a protected output driver in industrial 24 V PLC and DCS modules, switching loads such as solenoid valves, indicator lamps, and small heaters. Its diagnostic output enables per-channel fault detection for predictive maintenance and plant-floor diagnostics. The AEC-Q100 automotive-grade qualification provides extra robustness margin in harsh industrial environments with temperature swings and electrical transients. The exposed-pad PG-DSO-8 package allows sustained 2 A operation without additional heatsinking on standard 4-layer PCBs.
Recommended
Heating Element Driver (Seat Heater, Mirror Heater)
The ITS4100SSJNXUMA1 directly drives resistive heating elements in automotive seat heaters, mirror heaters, and steering-wheel heaters from the 12 V battery rail. Its current-limit and thermal-shutdown-with-restart features protect against overcurrent and overtemperature conditions inherent to heating-element loads. PWM operation (driven by the input pin) allows proportional temperature control without complex analog circuitry. The 2 A continuous rating suits typical 24 W heating mats used in mid-size vehicle seats.
Recommended
Power Distribution eFuse Replacement
Replace traditional automotive blade fuses with the ITS4100SSJNXUMA1 for resettable overcurrent protection in 12 V power-distribution units. The integrated current-limit and thermal-restart behavior eliminates fuse-replacement service calls and provides fault logging through the diagnostic pin. The reverse-battery protection prevents damage during jump-start miswiring. Designers can tune protection thresholds and response times via the input pin and external component choices.
Recommended
LED Module Driver for Automotive Signalling
The ITS4100SSJNXUMA1 drives LED daytime running lights, turn-signal modules, and tail-light clusters directly from 12 V. Its fast switching capability supports PWM dimming for sequential turn-signal effects, while current-limit and thermal protection guard LED strings against shorts and overloads. The diagnostic pin detects open-LED conditions, which is critical for automotive lighting where failed lamps must be reported to the driver per FMVSS / ECE regulations.
Recommended
Recommended Products Summary
Engineering reference data for ITS4100SSJNXUMA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS3011TEATMA1 | BTS3046SDRATMA1 | ITS4200SMEPHUMA1 | BTS4141NHUMA1 | BTS462TATMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-DSO-8 (exposed pad) | PG-DSO-8 (exposed pad) - same | PG-DSO-8 (exposed pad) - same | PG-DSO-8 - same | PG-DSO-8 - same | PG-DSO-8 - same |
| Continuous Load Current | 2 A | 2 A | Similar 2 A class | PROFET family rating | Similar PROFET class | Higher-current variant |
| Overload Protection | Yes | Yes | Yes | Yes | Yes | Yes |
| Thermal Shutdown with Restart | Yes | Yes | Yes | Yes | Yes | Yes |
| Reverse Battery Protection | Yes | Yes | Yes | Yes | Yes | Yes |
| Diagnostic / Status Output | Yes | Yes | Yes | Yes | Yes | Yes |
| AEC-Q100 Automotive Qualified | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Integrated reverse-battery protection eliminates external TVS diode (vs Discrete MOSFET + TVS design)
- Auto-restart thermal shutdown vs latching protection (vs BTS462TATMA1)
- Diagnostic status pin for OBD-II fault reporting (vs BSP78HUMA1)
Design Notes
The PG-DSO-8 exposed pad must be soldered to a copper pour on the PCB to achieve rated thermal performance. Per JEDEC JESD51 guidelines and the Infineon application note, use at least 1 square inch of 1 oz copper on a 4-layer FR4 board. Estimated: at 2 A continuous load with 200 mOhm RDS(on), conduction loss is approximately 0.8 W, which the package can dissipate without external heatsink at ambient temperatures up to 85 C.
Place the VBB decoupling capacitor (typically 100 nF ceramic, low-ESR) as close as possible to the VBB pin and GND. The exposed thermal pad requires thermal vias (typically 4-9 vias of 0.3 mm diameter) to the inner PCB ground plane for optimal heat spreading. Avoid routing sensitive analog signals or high-speed digital traces beneath the package to minimize ground-bounce coupling.
Do not exceed the maximum load-dump voltage rating (per ISO 7637-2) without external TVS protection if the application environment is harsh. Verify that the input pin logic-level compatibility matches the host MCU's GPIO voltage (3.3 V or 5 V). The diagnostic pin is open-drain on most variants and requires a pull-up resistor. Always test the inrush current of capacitive loads against the current-limit threshold to avoid nuisance tripping.
Compliance Information
AEC-Q100 qualified per Infineon product page. RoHS and REACH compliant. Halogen-free per JEDEC JS709B. Conflict-minerals statement available on Infineon compliance portal.
