ITS4142NHUMA1 - 1.4A Smart High-Side Switch SOT-223 | Infineon
料号： ITS4142NHUMA1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.28 | $128.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.88 | $880.00 |
ITS4142NHUMA1 概述
What is a high-side power switch? A high-side power switch is a semiconductor device placed between the positive supply rail and the load. By switching on the high side, the load is referenced to ground when off, eliminating ground loops and improving safety in industrial automation. High-side switches belong to the broader category of power distribution switches within power management ICs. Compared to low-side switches or electromechanical relays, smart high-side switches provide on-resistance control, fault feedback, and protection features in a single monolithic IC.
The ITS4142N integrates short-circuit protection with current limitation, overload protection, overvoltage protection including load-dump transients, undervoltage shutdown with auto-restart and hysteresis, and inductive-load switching capability. These features enable it to drive resistive, inductive, and capacitive loads in harsh 12 V and 24 V automotive and industrial environments. The logic-level input is compatible with 3.3 V and 5 V microcontrollers, simplifying digital control.
Architecturally, the device uses Infineon's SIPMOS vertical power MOSFET technology, which minimizes on-state conduction losses versus lateral MOSFETs. The integrated charge pump drives the gate of the N-channel FET to provide a true low-resistance path from supply to load. An onboard thermal shutdown circuit protects the die during overload events, while open-drain diagnostic feedback signals fault conditions to the host microcontroller.
Typical applications include 24 V industrial PLC outputs, automotive body-control modules, relay replacement in HVAC and lighting systems, programmable logic controller digital outputs, and solenoid or valve drivers. With its wide operating voltage range and embedded protection, the ITS4142N is well suited for IEC 61131-2 compliant industrial digital outputs.
When designing with this part, ensure that input debouncing and proper TVS protection are applied to the load lines for long-term reliability, and verify junction temperature under worst-case continuous load. A key design trade-off is RDS(on) versus quiescent current; the ITS4142N favors low on-resistance for minimal load-side dissipation.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, supporting both new designs and relay-replacement retrofits.
直接替换替代料： ITS4142NHUMA1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ITS4142NHUMA1 （相同外形与封装尺寸） ——差异在于 Package, Topology, Operating Temperature Range, Continuous Load Current, Diagnostic Output.
快速对比工具——选择替代料号进行并排对比：
ITS4141NHUMA1
✅ 直接替换✓ 有现货
$0.95 / 个
查看数据手册 →ITS4140NHUMA1
✅ 直接替换✓ 有现货
$0.72 / 个
查看数据手册 →ITS4880R
✅ 直接替换✓ 有现货
$5.89 / 个
查看数据手册 →BSP75NHUMA1
✅ 直接替换📋 参考替代料（不在目录中）
VNN1NV04P-E
✅ 直接替换📋 参考替代料（不在目录中）
ITS4142NHUMA1 最大额定值与电气特性
| Manufacturer | Infineon Technologies |
| Product Type | Smart High-Side Power Switch |
| 拓扑 | 1:1 N-Channel High-Side |
| 输出数量 | 1 |
| Continuous Load Current | 1.4 A |
| 工作电源电压 | 5 V to 34 V (load-dump tolerant to 45 V) |
| Logic Input Voltage | Logic-level, 3.3 V and 5 V compatible |
| Overvoltage Protection | Yes, including load dump |
| Undervoltage Shutdown | Yes, with auto-restart and hysteresis |
| Short Circuit Protection | Yes, with current limitation |
| Overload Protection | Yes |
| 热关断 | Yes |
| Diagnostic Feedback | Yes, open-drain status output |
| Inductive Load Switching | Yes, with internal clamping |
| 工作温度 | -40C to +125C (junction) |
| 封装 | PG-SOT223-4 (4-pin SOT-223) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
ITS4142NHUMA1 引脚配置
| 引脚 1 | IN — Logic-level input (3.3V/5V compatible), drives gate of high-side FET |
| 引脚 2 | GND — Logic ground / signal return |
| 引脚 3 | Vbb — Supply voltage (5 V to 34 V), connected to load via drain of internal N-FET |
| 引脚 4 | ST — Open-drain diagnostic status output |
典型应用
ITS4142NHUMA1 适用于 6 应用s: 24V Industrial PLC Digital Output, Automotive Body Control Module (BCM), Relay Replacement in HVAC Controls, Solenoid and Valve Driver, LED Lighting Driver (Industrial), Industrial Sensor Power Switch.
24V Industrial PLC Digital Output
The ITS4142NHUMA1 is well suited as a digital output driver for 24 V industrial PLC modules conforming to IEC 61131-2. Its 1.4 A continuous rating handles solenoid, valve, and indicator loads directly, while embedded short-circuit and overcurrent protection satisfy the IEC 61131-2 abnormal-operation test. The open-drain diagnostic pin reports wire-break and overload faults back to the PLC scan engine. With operating voltage from 5 V to 34 V and load-dump tolerance to 45 V, the part tolerates the harsh 24 V industrial bus transients without external protection.
推荐
Automotive Body Control Module (BCM)
The ITS4142NHUMA1 fits automotive BCM channels driving 12 V lighting, mirror-fold, door-lock, and seat-adjustment actuators. The integrated load-dump protection meets ISO 7637 pulse 5a/5b requirements, and the short-circuit current limit protects against harness faults. Thermal shutdown recovers automatically when the fault clears. Use the open-drain status pin to flag fault conditions over CAN or LIN to the BCM host controller.
推荐
Relay Replacement in HVAC Controls
For HVAC control boards replacing legacy electromechanical relays, the ITS4142NHUMA1 provides silent, bounce-free switching of 24 V damper motors, fan stages, and valve solenoids. Compared to a 24 V relay, it eliminates coil inrush, contact wear, and audible click noise, while the embedded diagnostics enable predictive maintenance alerts. The PG-SOT223-4 footprint allows drop-in PCB replacement of an existing relay footprint with minimal rework.
推荐
Solenoid and Valve Driver
The ITS4142NHUMA1 is rated for switching inductive loads with internal active clamping, making it a direct driver for 12 V or 24 V hydraulic solenoids, pneumatic valves, and latching relays in industrial automation. With 1.4 A continuous rating it covers most small-to-medium valve actuators. Designers must verify that the load's stored inductive energy (1/2 L I^2) does not exceed the ITS4142N datasheet single-pulse avalanche rating to avoid long-term reliability degradation.
推荐
LED Lighting Driver (Industrial)
For industrial 24 V LED indicator strips and architectural lighting drivers, the ITS4142NHUMA1 provides PWM-dimmable high-side current switching with embedded overcurrent and overtemperature protection. With a 3.3 V or 5 V logic-level input, it can be driven directly by a microcontroller PWM output at frequencies up to the datasheet limit. The diagnostic feedback indicates open-load and shorted-load conditions, useful for lamp-out detection in industrial fixture arrays.
推荐
Industrial Sensor Power Switch
The ITS4142NHUMA1 can switch power to 24 V field sensors (proximity, photoelectric, level) and IO-Link sensor supplies, providing programmable hot-swap and short-circuit isolation per sensor channel. The undervoltage shutdown with auto-restart protects sensors from brown-out events during heavy motor loads on the same 24 V rail. Diagnostic feedback reports per-channel health back to the IO-Link master.
推荐
推荐产品汇总
工程参考数据： ITS4142NHUMA1 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ITS4141NHUMA1 | ITS4140NHUMA1 | ITS4880R | BSP75NHUMA1 | VNN1NV04P-E |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | STMicroelectronics |
| Package | PG-SOT223-4 | PG-SOT223-4 | PG-SOT223-4 | PG-SOT223-4 | PG-SOT223-4 | SOT-223 (verify pinout) |
| Topology | High-Side N-Channel Smart Switch | High-Side N-Channel Smart Switch | High-Side N-Channel Smart Switch | High-Side Smart Switch | High-Side N-Channel Smart Switch | High-Side N-Channel OMNIFET |
| Continuous Load Current | 1.4 A | ~0.7 A | ~0.4 A | ~2 A | ~1 A | ~1 A |
| Operating Voltage Range | 5 V to 34 V | 5 V to 34 V | 5 V to 34 V | 5 V to 34 V | 5 V to 34 V | 5 V to 36 V |
| Diagnostic Feedback | Open-drain status | Open-drain status | Open-drain status | Open-drain status | Open-drain status | Status output (verify pin) |
| Load-Dump Protection | Yes (45 V) | Yes | Yes | Yes | Yes | Yes |
| Short-Circuit Protection | Yes (current limit) | Yes | Yes | Yes | Yes | Yes |
关键差异点
- Single-channel 1.4 A smart high-side switch in compact PG-SOT223-4 （对比 ITS4141NHUMA1)
- Integrated load-dump protection up to 45 V （对比 Discrete N-MOSFET + fuses + TVS approach)
- Open-drain diagnostic feedback for fault reporting （对比 VNN1NV04P-E (STMicroelectronics))
设计说明
Estimated: with the PG-SOT223-4 thermal pad soldered to ~1 square inch of copper, theta_JA is typically 60-80 C/W. At 1.4 A continuous load and RDS(on) on the order of 100-200 mOhm, junction temperature rise above ambient is in the 15-30 C range - well within the 125 C limit. For continuous operation at maximum load in enclosed industrial cabinets, increase copper area to 2-3 square inches and provide airflow to maintain margin.
Use a large copper pour under the SOT-223 tab (pin 3 / thermal pad) to maximize heat dissipation. Place input RC filter on the logic IN pin within 5 mm of the IC to reject high-frequency noise from industrial motor inverters. Provide a 100 nF ceramic bypass capacitor directly across Vbb to GND, and route the diagnostic pin away from switching power traces to avoid false triggering.
Do not connect the load between Vbb and the IC drain (pin 3) in reverse - this is a high-side switch and the load must return to GND, not to Vbb. Exceeding the inductive avalanche rating (E_AS) by switching highly inductive loads without external clamping causes long-term degradation even if the device survives each event. Always size the load's stored energy (1/2 L I^2) against the datasheet E_AS rating.
Keep the high-current load trace (from pin 3 / tab) short and wide to minimize voltage drop during inrush events. Use a star-ground topology so that the ITS4142N ground pin sees the same ground as the host MCU ground, preventing logic-level misinterpretation. Place TVS diodes on Vbb for additional load-dump protection if the application exceeds ISO 7637 worst-case transients.
合规信息
RoHS compliant per Infineon product page. HUMA1 suffix designates industrial grade (not AEC-Q100); AEC-Q100 automotive grade variants exist in the PROFET family but require a different order code. Halogen-free status not stated in the verified web data.
