BTS441RGATMA1 - 17A Smart High-Side Power Switch TO-263-5
料号： BTS441RGATMA1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.59 | $35.90 |
| 100 | $3.08 | $308.00 |
| 500 | $2.62 | $1,310.00 |
| 1,000 | $2.21 | $2,210.00 |
BTS441RGATMA1 概述
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.
直接替换替代料： BTS441RGATMA1 ——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： BTS441RGATMA1 （相同外形与封装尺寸） ——差异在于 Package, Diagnostic Output, Topology, Product Type, Number of Channels.
快速对比工具——选择替代料号进行并排对比：
BTS442E2
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
BTS450
✅ 直接替换📋 参考替代料（不在目录中）
BTS52004EKAXUMA1
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.65 / 个
查看数据手册 →ITS4040DEPDXUMA1
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.12 / 个
查看数据手册 →BTT60101ERBXUMA1
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.24 / 个
查看数据手册 →BTS70081EPAXUMA1
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.96 / 个
查看数据手册 →BTS70082EPAXUMA1
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.05 / 个
查看数据手册 →BTS70121EPAXUMA1
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.05 / 个
查看数据手册 →BTS441RGATMA1 最大额定值与电气特性
| Manufacturer | Infineon Technologies AG |
| Part Number | BTS441RGATMA1 |
| Switch Type | 1:1 N-Channel High-Side |
| 输出数量 | 1 |
| Continuous Load Current | 17 A |
| 拓扑 | Smart High-Side Switch |
| Input Type | CMOS-compatible, ground referenced |
| Diagnostics | Yes (fault feedback) |
| Technology | Smart SIPMOS (N-channel vertical FET + charge pump) |
| 封装 | PG-TO263-5-2 (TO-263-5) |
| 安装类型 | Surface Mount |
| 引脚数 | 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) |
| RoHS 状态 | Compliant |
| Tape and Reel Quantity | 1000 (per reel) |
BTS441RGATMA1 引脚配置
| 引脚 1 | OUT — Power output to load |
| 引脚 2 | Vbb — Battery/supply voltage input |
| 引脚 3 | GND — Ground reference |
| 引脚 4 | IN — CMOS-compatible control input |
| 引脚 5 | TAB/ST — Status/diagnostic feedback and exposed thermal tab (heat sink) |
典型应用
BTS441RGATMA1 适用于 6 应用s: 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).
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： BTS441RGATMA1 ——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 | 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 |
关键差异点
- Industry-standard 17 A PROFET 24V with diagnostic feedback （对比 BTS52004EKAXUMA1)
- Mature Classic PROFET family with extensive automotive track record （对比 BTS70081EPAXUMA1 (newer PROFET+))
- CMOS-compatible ground-referenced input simplifies MCU interfacing （对比 Discrete N-channel MOSFET + driver)
设计说明
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.
合规信息
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.
