ITS4140NHUMA1 - 200mA High-Side Smart Switch | Infineon
MPN: ITS4140NHUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.18 | $11.80 |
| 100 | $0.96 | $96.00 |
| 500 | $0.83 | $415.00 |
| 1,000 | $0.72 | $720.00 |
ITS4140NHUMA1 Overview
A high-side switch is a power-distribution IC that controls a load by switching the positive supply rail rather than ground return; this topology, also called a smart power switch or PROFET, sits in the PMIC (Power Management IC) hierarchy between discrete MOSFETs and fully-integrated system-basis chips. Compared with an electromechanical relay, a high-side switch provides silent, bounce-free switching, integrated diagnostics, and far faster fault response; compared with a discrete MOSFET plus fuse, it self-protects without external components.
The ITS4140N integrates a charge pump that drives the internal N-channel FET, a precise current limit, thermal shutdown, and ground-loss detection. Diagnostic feedback is provided through the IN/status pin, simplifying wire harness troubleshooting. Switching inductive loads such as solenoids, relays, and small motors is handled with internal active clamping that absorbs the back-EMF without external freewheeling diodes, simplifying PCB layout.
Designed for 12 V and 24 V industrial environments, the part withstands load-dump transients per ISO 7637-2 and is suitable for automotive and truck body electronics where the supply bus can swing well above nominal. Its 200 mA continuous current limit makes it ideal for driving small lamps, signal LEDs, sensors, and logic-level loads without external heatsinking.
When designing with this device, observe maximum input voltage (60 V) under worst-case load-dump, derate current with ambient temperature above 25C, and place the input capacitor within 5 mm of the Vbb pin. The exposed tab is the power-dissipation path and must be soldered to a copper pour of at least 100 mm squared.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for ITS4140NHUMA1 — 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 ITS4140NHUMA1 (same form factor and footprint) — differing in Package, Topology, Continuous Load Current, Operating Temperature Range, Protection Features.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BTS4140NHUMA1
✅ Drop-In✓ In Stock
$0.58 / Unit
View Datasheet →BTS452TATMA1
✅ Drop-In✓ In Stock
$1.12 / Unit
View Datasheet →BTS3028SDLATMA1
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →BTS3134NHUMA1
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →ITS4140N
✅ Drop-In📋 Reference alternative (not in catalog)
ITS4140NHUMA1 Maximum Ratings & Electrical Characteristics
| Function | High-Side Power Switch / Load Driver |
| Topology | 1:1 (Input to Output) |
| Switch Type | N-Channel (vertical, integrated) |
| Output Current (Continuous) | 200 mA |
| Supply Voltage Range (Vbb) | 4.9 V to 60 V |
| Short-Circuit Protection | Yes (current limit + thermal shutdown) |
| Overload Protection | Yes |
| Overvoltage Protection | Yes (including load dump) |
| Inductive Load Clamping | Yes (active negative-voltage clamp at output) |
| Diagnostic Output | Yes (status/IN pin feedback) |
| Operating Temperature Range | -40 C to +125 C |
| Package | PG-SOT223-4 (3+Tab) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
ITS4140NHUMA1 Pin Configuration
| Pin 1 | IN/status — Logic input (drives gate of internal FET) and combined diagnostic status output |
| Pin 2 | GND — Ground reference |
| Pin 3 | Vbb — Supply voltage (4.9 V to 60 V); place input decoupling capacitor close to this pin |
| Pin 4 | OUT (Tab) — Switched load output; the metal tab is internally connected to OUT and acts as the thermal pad |
Typical Applications
ITS4140NHUMA1 is suitable for 6 applications: Automotive Body Control Modules (BCM), Industrial 24V Sensor and Actuator Switching, Truck and Heavy-Duty 24V Lighting, Programmable Logic Controller (PLC) Digital Outputs, HVAC and Building Automation Actuators, Battery-Management and Load Disconnect.
Automotive Body Control Modules (BCM)
The ITS4140NHUMA1 fits automotive body-control modules driving small lamps, signal LEDs, and logic-level sensors directly from the 12 V or 24 V vehicle bus. Its 60 V load-dump withstand protects against ISO 7637-2 transients, while 200 mA continuous current covers interior lighting and indicator loads. Integrated short-circuit, overload, and thermal shutdown eliminate external fuses and heatsinks, reducing BOM cost per channel. The IN/status pin provides diagnostic feedback to the BCM microcontroller, enabling wire-harness fault detection. Compared with a discrete N-channel MOSFET plus fuse, the ITS4140N reduces PCB area and improves reliability by replacing four to five discrete parts with one PROFET.
Recommended
Industrial 24V Sensor and Actuator Switching
In industrial 24 V control cabinets, the ITS4140NHUMA1 drives proximity sensors, small solenoid valves, and indicator lamps with built-in ground-loss and short-circuit protection. Its 4.9 V to 60 V supply range tolerates the 24 V nominal rail plus transient excursions typical of factory environments. The integrated negative-voltage clamp allows direct connection to inductive loads such as relay coils without external freewheeling diodes. The status pin reports open-load and short-circuit faults to the PLC, reducing commissioning time. Designers value the PG-SOT223-4 footprint for compact DIN-rail I/O modules where board space is at a premium.
Recommended
Truck and Heavy-Duty 24V Lighting
The ITS4140NHUMA1 is well suited to commercial-vehicle marker lamps, side repeaters, and small interior lighting circuits that operate from a 24 V truck battery. Its 60 V load-dump tolerance handles the larger transients seen on heavy-vehicle buses compared with passenger cars. The 200 mA continuous rating covers most LED marker modules, and the integrated thermal shutdown prevents damage if the lamp wiring is miswired or shorted. Replacing a relay + fuse pair with one PROFET improves lifetime because there are no moving contacts to wear out.
Recommended
Programmable Logic Controller (PLC) Digital Outputs
PLC digital-output modules commonly switch 24 V field devices, and the ITS4140NHUMA1 provides a compact, protected high-side driver per channel. Its built-in current limit and diagnostic feedback allow the PLC firmware to detect wire breaks, overloads, and shorts without external sense resistors. The exposed-tab SOT-223 package dissipates heat efficiently, enabling 200 mA continuous operation per channel in dense 16- or 32-channel output cards. Compared with traditional Darlington + relay outputs, the ITS4140N reduces power dissipation by an order of magnitude.
Recommended
HVAC and Building Automation Actuators
Building-automation controllers use 24 VAC or 24 VDC rails to drive small damper actuators, valve solenoids, and relay coils. The ITS4140NHUMA1 replaces electromechanical relays in these applications with silent, solid-state switching rated for millions of cycles. The integrated inductive-load clamp allows direct drive of relay and solenoid coils without external diodes. The status pin reports fault conditions back to the building-management system for predictive maintenance, a key advantage over fuses that only fail after an overcurrent event.
Recommended
Battery-Management and Load Disconnect
In battery-powered systems the ITS4140NHUMA1 functions as a low-side or high-side load-disconnect switch for sub-systems that must be isolated during deep-discharge protection. Its 4.9 V minimum operating voltage allows connection directly to a single-cell Li-Ion or 6 V lead-acid stack, and the 60 V ceiling accommodates 48 V telecom battery rails with margin for transients. The integrated current limit prevents large inrush currents from damaging the disconnect switch, while the status pin confirms successful disconnect to the battery monitor IC.
Recommended
Recommended Products Summary
Engineering reference data for ITS4140NHUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS4140NHUMA1 | BTS452TATMA1 | BTS3028SDLATMA1 | BTS3134NHUMA1 | ITS4140N |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-SOT223-4 (3+Tab) | PG-SOT223-4 (3+Tab) - same | PG-SOT223-4 (3+Tab) - same | PG-SOT223-4 (3+Tab) - same | PG-SOT223-4 (3+Tab) - same | PG-SOT223-4 (3+Tab) - same |
| Supply Voltage Range | 4.9 V to 60 V | 4.9 V to 60 V | 4.5 V to 42 V | 4.5 V to 28 V | 4.5 V to 60 V | 4.9 V to 60 V |
| Continuous Load Current | 200 mA | 200 mA | ~2.6 A | ~700 mA | ~1.2 A | 200 mA |
| Diagnostic Status Pin | Yes | Yes | Yes | Yes | Yes | Yes |
| Inductive Load Clamp | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature Range | -40 C to +125 C | -40 C to +125 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +125 C |
Key Differentiators
- Industrial-grade cost advantage over automotive-grade BTS4140N (vs BTS4140NHUMA1)
- Lower current class fits signal-level loads without oversizing (vs BTS452TATMA1)
- 60 V supply ceiling exceeds 24 V truck rail with full load-dump margin (vs BTS3028SDLATMA1)
Design Notes
Estimated: at 200 mA load and an on-resistance of approximately 1.5 ohm (typical for ITS4140N family), power dissipation is roughly 60 mW - well within the PG-SOT223-4 thermal budget without external heatsink. Solder the exposed tab to a copper pour of at least 100 mm squared to keep theta_JA below 60 C/W. For continuous operation above 150 mA in enclosed housings, derate by 0.6 mA per degree C above 25 C ambient.
Place the Vbb input decoupling capacitor (100 nF ceramic minimum, 1 uF recommended for load-dump survivability) within 5 mm of pin 3 to suppress supply ringing. Keep the high-current OUT trace short and wide; the load return should connect to GND at pin 2 with a low-impedance path. Avoid routing sensitive analog signals under the PG-SOT223-4 tab to prevent ground bounce coupling.
Do not exceed 60 V on Vbb during load-dump - even momentary transients above the absolute maximum permanently damage the internal charge pump. The IN/status pin is a combined logic and diagnostic line; do not drive it from a push-pull driver that exceeds 5.5 V. When driving large inductive loads (over 100 mH), add an external TVS across the load to share the inductive clamp energy and extend device lifetime.
Compliance Information
Industrial-grade PROFET. RoHS and REACH compliant per Infineon product page. AEC-Q100 not applicable for the ITS4140N industrial variant - use BTS4140N for AEC-Q100 qualified designs.
