ITS42K5DLDFXUMA1 - Dual 250mA PROFET High-Side Switch | Infineon
MPN： ITS42K5DLDFXUMA1 ✓ 啟用中ITS42K5DLDFXUMA1 概覽
A PROFET high-side switch is a smart power switch that combines a MOSFET output stage, gate driver, and comprehensive protection circuitry in one IC. It belongs to the power distribution switch category within the broader power management IC (PMIC) hierarchy, sitting between discrete MOSFETs (which need external drivers and protection) and fully-integrated system basis chips (which add CAN/LIN transceivers). PROFET switches are commonly used in automotive body and powertrain modules where they replace discrete relays with PCB-mountable, diagnostically-rich equivalents.
Key features include dual 250 mA continuous current per channel, 2.5 ohm Rds(on) typical, integrated freewheeling diode per output, status feedback, and protection functions (overload, short-circuit, thermal shutdown, overvoltage clamp). The 1:1 input-to-output switch topology provides simple logic-level control from a microcontroller GPIO. Operating voltage range supports both 12 V and 24 V automotive buses with reverse-battery robustness.
Architecturally, each channel uses a vertical P-channel DMOS output transistor driven by a charge-pump-derived gate drive, with current-sensing and temperature-sensing blocks feeding back into a fault-management state machine. The exposed thermal pad on the bottom of the TSON-10-2 package provides a low thermal-resistance path (~30 C/W typical) to the PCB copper, enabling sustained operation at the rated current without external heatsinking.
Typical applications include automotive body control modules (BCM), HVAC actuators, LED lighting drivers, sensor power distribution, and industrial 24V PLC outputs. The dual-channel design is particularly efficient for paired loads such as bidirectional motors or two indicator lamps sharing one IC.
When designing with this part, place the exposed pad on a copper pour of at least 1 square centimeter to keep junction temperature within rating at full load. The status pin requires a pull-up resistor; consult the datasheet for diagnostic truth-table behavior in fault conditions.
This page synthesizes Infineon datasheet parameters, distributor pricing, drop-in alternatives, and practical design notes not found on a single distributor product page, giving engineers a one-stop reference for evaluation and BOM decisions.
直接替換替代品，適用於 ITS42K5DLDFXUMA1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ITS42K5DLDFXUMA1 （相同外形與佔位） — 差異在於 Package, Diagnostic Output, Continuous Load Current, Protection Features, Topology.
ITS4142NHUMA1
✅ 直接替換聯絡詢價
查看資料表 →BTS3011TEATMA1
✅ 直接替換聯絡詢價
查看資料表 →ITS41K0SMENHUMA1
✅ 直接替換聯絡詢價
查看資料表 →ITS42K5DLDFXUMA1 最大額定值與電氣特性
| Switch Type | High-side, dual channel |
| 輸出數量 | 2 |
| 拓撲 | 1:1 (one input per output) |
| 輸出配置 | P-Channel high-side |
| Continuous Output Current (per channel) | 250 mA |
| On-State Resistance (Rds(on)) | 2.5 ohm typical |
| Supply Voltage (Vbb) | 5 V to 13.5 V (operating); 24 V load-dump tolerant |
| Overvoltage Clamp | Integrated |
| Freewheeling Diode | Integrated per channel |
| Protection Features | Overload, short-circuit, thermal shutdown, overvoltage |
| Diagnostic Output | Status feedback |
| 工作溫度範圍 | -40 C to +125 C (junction) |
| 封裝 | PG-TSON-10-2 (TSON Exposed Pad) |
| 安裝類型 | Surface Mount |
| Family | PROFET 24V/48V Smart High-Side Switch |
| RoHS 狀態 | Compliant |
ITS42K5DLDFXUMA1 腳位配置
| 腳位 1 | IN1 — Logic input for channel 1 (active high) |
| 腳位 2 | GND — Ground |
| 腳位 3 | OUT1 — Channel 1 high-side output |
| 腳位 4 | Vbb — Battery supply input |
| 腳位 5 | ST — Status / diagnostic feedback |
| 腳位 6 | NC — Not connected (per datasheet) |
| 腳位 7 | IN2 — Logic input for channel 2 (active high) |
| 腳位 8 | OUT2 — Channel 2 high-side output |
| 腳位 9 | NC — Not connected (per datasheet) |
| 腳位 10 | Vbb — Battery supply (second bond pad) |
| 腳位 EP | Exposed Pad — Thermal pad - connect to copper pour for heat dissipation |
典型應用
ITS42K5DLDFXUMA1 適用於 7 應用s: Automotive Body Control Modules, HVAC Actuator Drivers, Automotive LED Lighting Drivers, Industrial 24V Sensor Power Distribution, Relay Replacement in 12V Systems, Battery Management Peripheral Switching, Power Distribution Switches (USB/Peripheral Rails).
Automotive Body Control Modules
The ITS42K5DLDFXUMA1's dual 250 mA channels and PROFET protection suite make it well-suited to body control modules driving small lamps, LED indicators, and signal-level relays. Each channel's 2.5 ohm Rds(on) keeps conduction loss under 0.16 W at full load, while the integrated freewheeling diode handles the inductive kickback of small solenoids and relay coils. The IC's 24 V load-dump tolerance and -40 C to +125 C junction range match automotive underhood and cabin environments, and the AEC-Q100 qualification streamlines PPAP. In a typical BCM, two adjacent outputs replace two discrete low-side transistors plus their protection, saving PCB area and reducing the BOM by roughly 40%. Status feedback allows the microcontroller to detect open-load and short-to-battery faults, supporting OBD-II diagnostic requirements.
推薦
HVAC Actuator Drivers
In HVAC flap motors and mode-door actuators, the ITS42K5DLDFXUMA1 drives the two windings of small bidirectional DC motors from its dual high-side outputs, with the microcontroller handling H-bridge low-side logic on the opposite leg. The 250 mA per-channel rating suits small 12 V actuators under 3 W mechanical output, and the integrated thermal shutdown prevents winding-fault damage during stalled-rotor events. The exposed thermal pad enables 2-channel continuous operation without external heatsinking at typical HVAC actuator duty cycles. Overvoltage clamping protects the outputs from compressor-load transients on the shared 12 V bus. This pairing reduces BOM count versus discrete MOSFET-plus-relay designs and gives the MCU open-load diagnostics out of the box.
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Automotive LED Lighting Drivers
The ITS42K5DLDFXUMA1 can drive small interior LED strings up to 250 mA per channel, such as dome lights, ambient lighting, and indicator strips. Its PWM-capable input allows microcontroller-driven dimming at frequencies from 100 Hz to 1 kHz without flicker. The 2.5 ohm Rds(on) provides comfortable headroom for 12 V systems with LED forward voltages of 2-3 V per die. The integrated short-to-ground and overload protection prevents the LED string from damaging the driver in fault conditions, and the diagnostic output flags open-load (LED failure) events to the body controller. Using two channels from one IC for left/right or front/rear LED pairs cuts component count and simplifies PCB layout versus dual discrete MOSFETs.
推薦
Industrial 24V Sensor Power Distribution
In industrial PLC and sensor-hub designs, the ITS42K5DLDFXUMA1 serves as a per-channel protected 24 V supply switch for field sensors, providing controlled turn-on/turn-off and fault isolation. The 250 mA per-channel capability covers most proximity, photoelectric, and small flow sensors. Integrated short-circuit protection limits fault current to safe levels, preventing wiring-harness damage on the 24 V bus. Status feedback to the PLC enables predictive maintenance by detecting sensor open-circuit or short-to-ground conditions. The wide operating voltage range (5 V to 13.5 V nominal, with 24 V transient tolerance) handles industrial 24 V bus environments with substantial headroom. Compared to fused sensor power rails, each PROFET-protected channel can be reset electronically, eliminating fuse-replacement downtime.
推薦
Relay Replacement in 12V Systems
The ITS42K5DLDFXUMA1 directly replaces small automotive and industrial signal relays with a solid-state, PCB-mountable equivalent. Each channel switches up to 250 mA - sufficient for relay coils, small solenoids, and indicator lamps. Replacing electromechanical relays eliminates audible click noise, contact bounce, and mechanical wear, while adding diagnostic feedback unavailable from discrete relays. The PROFET's reverse-battery and load-dump protection exceeds typical relay self-protection, and the SMT TSON-10-2 package reduces assembly cost versus through-hole relay sockets. In retrofit or new designs, replacing a relay plus its driver transistor with a single ITS42K5DLDFXUMA1 channel typically halves the BOM cost per switched output.
推薦
Battery Management Peripheral Switching
In 12V/24V battery management systems, the ITS42K5DLDFXUMA1 switches low-current peripheral loads such as cell-monitoring isolators, balance-circuit enable lines, and pre-charge resistors. Each 250 mA channel provides controlled connection of these auxiliary circuits with full PROFET protection. The exposed-pad package enables compact PCB layouts adjacent to high-current battery FETs, where small-signal switches share board space with main power paths. Status feedback allows the BMS MCU to verify peripheral connection before initiating balancing or measurement, improving functional safety. The 5-13.5 V operating range covers the full 12V lead-acid and 24V LiFePO4 bus voltages commonly encountered in industrial and e-mobility battery systems.
推薦
Power Distribution Switches (USB/Peripheral Rails)
The ITS42K5DLDFXUMA1's dual-channel high-side configuration with per-channel protection suits it for USB VBUS power distribution in infotainment head units and industrial HMI panels. Each 250 mA channel can power a USB port or peripheral rail with controlled turn-on, current limiting, and fault feedback. The PROFET's short-to-ground protection prevents VBUS shorts from damaging upstream regulators, and the thermal shutdown contains fault energy. Compared to discrete polyfuse-plus-MOSFET designs, the PROFET provides electronic resettable protection, faster fault response, and a status output for fault indication. The TSON-10-2 footprint fits on the dense PCB of head-unit and HMI designs where board area is at a premium.
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推薦產品摘要
工程參考資料，適用於 ITS42K5DLDFXUMA1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ITS4142NHUMA1 | BTS3011TEATMA1 | ITS41K0SMENHUMA1 |
|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TSON-10-2 (Exposed Pad) | PG-TSON-10-2 (same family) | PG-TSON-10-2 family | PG-TSON-10-2 family |
| Number of Channels | 2 | 1 (single-channel variant) | 1 | 1 |
| Integrated Freewheeling Diode | Yes (per channel) | Yes (per Infineon PROFET family) | Yes | Yes |
| Thermal Shutdown | Yes (per channel) | Yes | Yes | Yes |
| Automotive Grade (AEC-Q100) | Yes | Yes | Yes | Yes |
| Operating Temperature Range | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
主要差異化特點
- Dual 250 mA channels in one TSON-10-2 IC (對比ITS4142NHUMA1 (single channel))
- Integrated freewheeling diode per channel (對比Discrete P-MOSFET + external diode approach)
- Per-channel thermal shutdown with automatic restart (對比Discrete MOSFET without thermal protection)
設計說明
Estimated: With both channels driving 250 mA continuous at 13.5 V Vbb and 0 V load, conduction loss per channel is roughly P = I^2 x R = 0.156 W, totaling ~0.31 W for both channels on. The PG-TSON-10-2 package with exposed pad achieves a thermal resistance of approximately 30 C/W to a 1-square-centimeter copper pour on a 2-layer FR4 board, giving a junction temperature rise of about 9 C above ambient - well within the 125 C maximum. For operation near 125 C ambient, increase the copper pour to 2 cm^2 or use a 4-layer board with internal copper planes to keep theta_JA below 25 C/W.
Solder the exposed thermal pad to a continuous copper pour on the top layer, stitched with thermal vias (8-12 vias, 0.3 mm drill) to the bottom layer and any internal power planes. Place input and output capacitors (>= 100 nF ceramic) within 2 mm of the Vbb and OUT pins to limit switching transients. Route the INx logic traces away from the OUTx power traces to prevent capacitive coupling that could cause false triggering during fast load transients.
Do not connect inductive loads larger than the datasheet maximum energy rating without external snubbers - the integrated freewheeling diode clamps turn-off transients, but exceeding the energy limit causes permanent device damage. Ensure the status pin has a pull-up resistor (typically 10 kohm to 5 V) per the Infineon datasheet, or the diagnostic feedback will be undefined. Avoid reverse-polarity operation beyond the datasheet-specified -Vbb limit; while the IC has reverse-battery protection, sustained reverse voltage can still stress the protection circuitry.
Keep the ground return path between the load and the IC's GND pin short and direct, since the current-sensing circuitry uses this path for fault detection. A long ground return introduces parasitic inductance that can cause false current-limit triggering during load transients. Star-ground the logic ground and power ground at the IC's GND pin to avoid ground-loop noise coupling into the status output.
合規資訊
AEC-Q100 qualified per Infineon PROFET family datasheet. RoHS and REACH compliant per Infineon product page. Lead-free and halogen-free per package materials declaration.
