BTS441RGATMA1 - 17A Smart High-Side Power Switch TO-263-5
MPN: BTS441RGATMA1 ✓ نشطBTS441RGATMA1 نظرة عامة
A smart high-side power switch is a type of power distribution switch that sits between the supply rail and the load, providing controlled turn-on, current limiting, and protective features. Smart high-side switches belong to the broader family of power distribution switches -> load switches -> power management ICs -> semiconductor devices, replacing discrete fuses and relays with solid-state protection that can be controlled by a microcontroller.
Key features include 17 A continuous load current capability, integrated CMOS-compatible ground-referenced input, diagnostic feedback output, and monolithic charge-pump gate drive. The BTS441RGATMA1 provides short-circuit, overload, and thermal protection as well as over-voltage clamping, enabling reliable switching of resistive, capacitive, and inductive loads in harsh automotive environments.
Architecturally, the part uses an N-channel vertical DMOS output stage driven by an on-chip charge pump, allowing full enhancement at low battery voltages while maintaining low Rds(on). The diagnostic pin reports fault conditions such as overtemperature and open load, simplifying ECU firmware design. According to the manufacturer datasheet, the device operates across the standard 12 V/24 V automotive bus range with reverse-battery robustness.
Typical applications include automotive lighting control (headlamps, tail lamps, turn signals), body electronics (door locks, seat heaters), and industrial 24 V load switching. The device is also used in power distribution modules and relay replacements where solid-state reliability and diagnostics are required.
When designing with this part, ensure the load current does not exceed 17 A continuously and provide adequate copper area on the PCB to dissipate package heat. The exposed tab (pin 5) functions as the main heat path and must be soldered to a sufficiently large copper pour. Use a flyback or free-wheeling diode across inductive loads if the device's internal clamping is insufficient for the energy in the load inductance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
بدائل مباشرة لـ BTS441RGATMA1 — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع BTS441RGATMA1 (نفس عامل الشكل والبصمة) — يختلف في Package, Diagnostic Output, Topology, Product Type, Number of Channels.
BTS442E2
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
BTS450
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
BTS52004EKAXUMA1
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←ITS4040DEPDXUMA1
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←BTT60101ERBXUMA1
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←BTS70081EPAXUMA1
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←BTS70082EPAXUMA1
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←BTS70121EPAXUMA1
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←BTS441RGATMA1 الحدود القصوى والخصائص الكهربائية
| Manufacturer | Infineon Technologies AG |
| Part Number | BTS441RGATMA1 |
| Switch Type | 1:1 N-Channel High-Side |
| عدد المخارج | 1 |
| Continuous Load Current | 17 A |
| البنية الطوبولوجية | Smart High-Side Switch |
| Input Type | CMOS-compatible, ground referenced |
| Diagnostics | Yes (fault feedback) |
| Technology | Smart SIPMOS (N-channel vertical FET + charge pump) |
| العلبة | PG-TO263-5-2 (TO-263-5) |
| نوع التركيب | Surface Mount |
| عدد الدبابيس | 5 |
| Over-Current Protection | Yes (integrated) |
| Thermal Protection | Yes (overtemperature shutdown) |
| Over-Voltage Protection | Yes (inductive load clamping) |
| Automotive Qualified | Yes (AEC-Q100 automotive grade) |
| حالة RoHS | Compliant |
| Tape and Reel Quantity | 1000 (per reel) |
تكوين أطراف BTS441RGATMA1
| دبوس 1 | OUT — Power output to load |
| دبوس 2 | Vbb — Battery/supply voltage input |
| دبوس 3 | GND — Ground reference |
| دبوس 4 | IN — CMOS-compatible control input |
| دبوس 5 | TAB/ST — Status/diagnostic feedback and exposed thermal tab (heat sink) |
التطبيقات النموذجية
BTS441RGATMA1 مناسب لـ 6 التطبيقs: Automotive Headlamp Control, Body Control Module Load Switching, Industrial 24V Solenoid and Valve Drivers, Automotive Seat Heater Control, Power Distribution Module (PDM) Replacement of Fuses, Truck and Heavy-Duty 24V Lighting.
Automotive Headlamp Control
Automotive headlamps (low beam, high beam, and DRL modules) draw 5-10 A per bulb in 12 V systems and require fault detection for open-filament conditions. The BTS441RGATMA1's 17 A continuous rating comfortably drives a single headlamp or pair of lamps, while its integrated diagnostic pin reports filament failure to the BCM. Its over-current and thermal protections are critical for the harsh under-hood thermal environment (-40 C to +125 C junction).
موصى به
Body Control Module Load Switching
Body control modules (BCMs) drive door locks, seat heaters, mirror adjusters, and similar 12 V loads. The BTS441RGATMA1's 1:1 high-side topology with CMOS input integrates cleanly with the BCM microcontroller's GPIO, while diagnostic feedback enables open-load detection during end-of-line testing. Compared to electromechanical relays, the BTS441RGATMA1 eliminates mechanical wear and provides silent PWM dimming capability for interior lighting.
موصى به
Industrial 24V Solenoid and Valve Drivers
Industrial 24 V systems use proportional valves, hydraulic solenoids, and pneumatic actuators requiring fast, protected switching. The BTS441RGATMA1's high-side configuration sources current from the 24 V rail, common-grounding the load simplifies wiring, and its integrated over-voltage clamping protects against inductive flyback from solenoids at turn-off. The 17 A rating covers most industrial valve clusters; for higher currents, the BTS450 family offers more headroom in the same package.
موصى به
Automotive Seat Heater Control
Seat heaters draw 5-15 A per seat at 12 V and require precise PWM control for temperature regulation. The BTS441RGATMA1's CMOS-compatible input enables direct PWM drive from the seat-control module's microcontroller at typical 100-200 Hz heater PWM frequencies. Its thermal protection prevents overheating if the seat cushion is folded or covered, and its diagnostic feedback can detect heater-element open-circuit faults during vehicle diagnostics.
موصى به
Power Distribution Module (PDM) Replacement of Fuses
Modern automotive power distribution modules replace blade fuses with solid-state smart switches to enable remote reset, load monitoring, and diagnostic reporting. The BTS441RGATMA1 fits this role with its 17 A channel current, integrated protection, and digital feedback - eliminating the need for a fuse holder and enabling the BCM to report fault conditions via CAN. Multiple BTS441RGATMA1 units can be combined in a PDM for each protected branch.
موصى به
Truck and Heavy-Duty 24V Lighting
Commercial trucks and heavy-duty vehicles operate on 24 V electrical systems, where lighting loads (marker lamps, brake lights, signal lights) require protected high-side switching. The BTS441RGATMA1's part of Infineon's Classic PROFET 24V family makes it qualified for 24V bus operation with appropriate thermal design. Its monolithic integration reduces PCB complexity in trailer lighting controllers where space is constrained.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ BTS441RGATMA1 — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | BTS442E2 | BTS450 | BTS52004EKAXUMA1 | ITS4040DEPDXUMA1 | BTT60101ERBXUMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TO263-5-2 | PG-TO263-5-2 - same | PG-TO263-5-2 - same | PG-TO263-5-2 - same | PG-TO263-5-2 - same | PG-TO263-5-2 - same |
| Topology | 1:1 N-Channel High-Side | 1:1 N-Channel High-Side | 1:1 N-Channel High-Side | Dual-Channel High-Side | 1:1 High-Side | Dual-Channel High-Side |
| Technology | Smart SIPMOS | Smart SIPMOS | Smart SIPMOS | Smart SIPMOS | Smart SIPMOS | Smart SIPMOS |
| Diagnostics | Yes (fault feedback) | Yes | Yes | Yes | Yes | Yes |
| Over-Current Protection | Integrated | Integrated | Integrated | Integrated | Integrated | Integrated |
| Thermal Protection | Yes | Yes | Yes | Yes | Yes | Yes |
| Automotive Qualified | Yes (AEC-Q100) | Yes | Yes | Yes | Yes | Yes |
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
أبرز الفروقات
- Industry-standard 17 A PROFET 24V with diagnostic feedback (مقابلBTS52004EKAXUMA1)
- Mature Classic PROFET family with extensive automotive track record (مقابلBTS70081EPAXUMA1 (newer PROFET+))
- CMOS-compatible ground-referenced input simplifies MCU interfacing (مقابلDiscrete N-channel MOSFET + driver)
ملاحظات التصميم
The BTS441RGATMA1's PG-TO263-5-2 package dissipates heat primarily through pin 5 (the exposed tab). At 17 A continuous load with Rds(on) in the tens of milliohms, internal dissipation can reach several watts. Estimated: with Rds(on) of approximately 20 mOhm at 25 C and 17 A load, conduction loss is about 5.8 W; the package's theta_JA on a standard 4-layer PCB with ~6 cm^2 copper is roughly 40 C/W, producing a junction temperature rise of ~232 C, exceeding the 150 C limit. Designers MUST use the largest practical copper pour on pin 5, add thermal vias, and verify junction temperature against the application thermal envelope.
Inductive loads (relays, solenoids, motors) can generate flyback voltages that exceed the device's clamping capability if load inductance is high. Estimated: for a 100 mH solenoid at 1 A, stored energy E = 0.5 * L * I^2 = 50 mJ; verify this is within the device's repetitive avalanche energy rating. For larger inductors, add an external TVS diode or flyback diode to protect the switch. Also ensure the input pin (IN) is never left floating - always tie it high or low through the microcontroller, never through a high-impedance node.
Place input and output bypass capacitors as close to the device pins as possible. Use wide copper pours for the Vbb supply trace to minimize parasitic inductance that causes ringing during switching events. Connect the exposed tab (pin 5) to a large copper area on both top and bottom layers, stitched with thermal vias (typically 0.3 mm drill, 0.5 mm pad, 1 mm pitch array). Maintain creepage/clearance distances appropriate for the maximum working voltage per IPC-2221 if the design is for high-voltage transient environments.
معلومات الامتثال
AEC-Q100 qualified per Infineon Classic PROFET 24V family. RoHS and REACH compliant. Halogen-free status not confirmed in verified data - consult manufacturer for confirmation.
