BSP452HUMA1 - 700mA Smart High-Side Switch SOT-223 | Infineon
料号： BSP452HUMA1 ✓ 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 | $0.92 | $920.00 |
| 3,000 | $0.78 | $2,340.00 |
BSP452HUMA1 概述
A smart high-side switch is a type of power distribution switch that connects a load to the positive supply rail and integrates the power MOSFET with protection and diagnostic circuitry. Smart high-side switches sit within the broader category of power management ICs and load drivers, and are widely used to replace discrete MOSFETs plus fuse arrangements in body electronics and industrial control modules.
Key features include short-circuit protection, overvoltage protection (clamp), overtemperature shutdown with hysteresis, overload protection, input protection (ESD), and inductive-load switching capability with negative output clamp. The part is qualified to AEC-Q100 standards for automotive applications and offers diagnostic feedback through the STATUS pin. The integrated charge pump generates the gate drive for the N-channel FET while keeping the load referenced to ground.
The BSP452HUMA1 belongs to Infineon's Classic PROFET 12V family, which uses a vertical DMOS process to minimize RDS(on) for a given die area. Internal current limiting, thermal shutdown, and an active clamp structure for inductive loads allow reliable switching of solenoids, lamps, relays, and motors in 12 V vehicle electrical systems.
Typical applications include automotive body modules (lighting, door modules, seat control), industrial PLC digital I/O, smart relay replacement, and any 12 V/24 V load-switching circuit where fault protection, low quiescent current, and small PCB area are required.
When designing with this part, always observe the maximum 34 V supply rating, derate output current versus ambient temperature, and place the tab solder pad on sufficient copper area to meet the SOT-223 thermal resistance of approximately 65 K/W for reliable thermal performance.
This page synthesizes distributor pricing, drop-in alternatives within the PROFET family, and practical design notes not consolidated in any single datasheet.
直接替换替代料： BSP452HUMA1 ——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： BSP452HUMA1 （相同外形与封装尺寸） ——差异在于 Package, Product Type.
快速对比工具——选择替代料号进行并排对比：
BSP452
✅ 直接替换✓ 有现货
$0.78 / 个
查看数据手册 →BSP452 E6327
✅ 直接替换📋 参考替代料（不在目录中）
BSP452HUMA2
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
BSP318S
✅ 直接替换📋 参考替代料（不在目录中）
BSP450
✅ 直接替换📋 参考替代料（不在目录中）
BSP452P
✅ 直接替换📋 参考替代料（不在目录中）
BSP452G
✅ 直接替换📋 参考替代料（不在目录中）
BSP452HUMA1 最大额定值与电气特性
| Product Type | Smart High-Side Power Switch |
| Family | Classic PROFET 12V |
| Number of Channels | 1 |
| Switch Type | N-Channel (integrated vertical power FET) |
| 工作电源电压 | 5 V to 34 V |
| Continuous Load Current | 700 mA |
| On-State Resistance (RDS(on)) | 0.16 ohm (typical) |
| 封装 | PG-SOT223-4 (3+Tab) |
| 安装类型 | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified |
| Short-Circuit Protection | Yes (integrated) |
| Overvoltage Protection | Yes (clamp) |
| Overtemperature Protection | Yes (shutdown with hysteresis) |
| Overload Protection | Yes |
| ESD Protection | Yes (input pin) |
| Inductive Load Switching | Yes (with negative output clamp) |
| 工作温度 | -40 C to +150 C (junction) |
| MSL 等级 | 1 (per JEDEC J-STD-020) |
| RoHS 状态 | Compliant |
BSP452HUMA1 引脚配置
| 引脚 1 | IN — Supply voltage input (5 V to 34 V) |
| 引脚 2 | GND — Ground reference |
| 引脚 3 | NC — Not connected (per datasheet) |
| 引脚 4 | OUT — Switched output to load |
| 引脚 Tab | STATUS — Diagnostic feedback / thermal pad |
典型应用
BSP452HUMA1 适用于 7 应用s: Automotive Lighting Modules, Automotive Door Module Actuators, Industrial 24V PLC Digital Outputs, Smart Relay Replacement, Solenoid and Valve Drivers, Battery-Powered IoT Load Switch, HVAC Blower and Fan Speed Control.
Automotive Lighting Modules
The BSP452HUMA1 is ideally suited for driving automotive lamps in body electronics modules. With 700 mA continuous current and 0.16 ohm RDS(on), it can switch headlamp level loads via PWM dimming without thermal stress. The integrated short-circuit and overtemperature protections automatically isolate wiring faults that would otherwise blow fuses, and the STATUS pin reports fault conditions back to the body controller. AEC-Q100 qualification supports use in passenger compartment and underhood lighting circuits across the 12 V vehicle electrical system.
推荐
Automotive Door Module Actuators
Door modules require multiple high-side switches for window lifters, mirror adjusters, and lock actuators. The BSP452HUMA1 fits each individual load channel with its 700 mA rating handling small motors and mirror heaters comfortably. The 5 V to 34 V supply range accommodates cranking and load-dump transients on the vehicle bus, while the integrated inductive clamp handles the back-EMF from DC loads. STAR topology: the integrated STATUS pin simplifies diagnostics by reporting open-load and short-circuit faults without additional wiring.
推荐
Industrial 24V PLC Digital Outputs
The BSP452HUMA1 serves as a solid-state replacement for relay outputs in industrial PLC modules driving 24 V solenoids, valves, and indicator lamps. Its 700 mA rating covers the majority of industrial load types, while the 34 V maximum supply rating accepts 24 V nominal rails with transients. The integrated protection functions eliminate the need for external fuses on each output channel, reducing BOM cost and PCB area. STAR topology: STATUS feedback enables predictive maintenance by reporting partial-load degradation.
推荐
Smart Relay Replacement
Replacing electromechanical relays with the BSP452HUMA1 yields silent operation, microsecond switching speed, and far longer lifetime (no moving contacts to wear). The SOT-223 footprint is far smaller than a typical automotive relay package, enabling miniaturized PCB designs. Integrated thermal and short-circuit protection makes the BSP452HUMA1 tolerant of wiring faults that would weld relay contacts. For new designs targeting 700 mA loads, this part offers a relay-equivalent function with solid-state reliability.
推荐
Solenoid and Valve Drivers
The BSP452HUMA1 efficiently drives small solenoids, pneumatic valves, and hydraulic valves in industrial and automotive systems. The integrated active clamp absorbs inductive kickback from the coil collapse, protecting the switch and allowing direct connection to the load without external freewheel components. With 700 mA continuous current, it can switch most 12 V and 24 V proportional and on/off solenoids. STAR topology: the STATUS pin provides open-load detection for predictive diagnostics.
推荐
Battery-Powered IoT Load Switch
Although optimized for 12 V automotive systems, the BSP452HUMA1 also functions as a low-quiescent load-disconnect switch in battery-powered IoT nodes with 5 V to 34 V supply rails. By sitting between the battery and the load, it cuts quiescent draw to near zero when the load is disabled, extending shelf life and runtime. The 0.16 ohm RDS(on) minimizes conduction loss during active periods. STAR topology: STATUS pin can wake the host MCU on fault conditions via interrupt.
推荐
HVAC Blower and Fan Speed Control
The BSP452HUMA1 paired with PWM control from the body controller can regulate HVAC blower speed and small cooling fans. While high-current blower motors require higher-rated PROFETs (BTS series), the BSP452HUMA1 fits smaller fans and auxiliary ventilation blowers. Integrated thermal shutdown protects against stall conditions where the rotor locks and current spikes. STAR topology: STATUS pin allows the ECU to detect stalled fans and trigger diagnostic trouble codes.
推荐
推荐产品汇总
工程参考数据： BSP452HUMA1 ——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 | BSP452 | BSP452 E6327 | BSP452HUMA2 | BSP318S | BSP450 |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-SOT223-4 (3+Tab) | PG-SOT223-4 - same | PG-SOT223-4 - same | PG-SOT223-4 - same | PG-SOT223-4 - same | PG-SOT223-4 - same |
| Short-Circuit Protection | Yes | Yes | Yes | Yes | Yes | Yes |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes |
| STATUS Pin | Yes (diagnostic) | Yes | Yes | Yes | Yes | Yes |
关键差异点
- Integrated vertical power FET with 0.16 ohm RDS(on) （对比 Discrete N-MOSFET + fuse design)
- AEC-Q100 qualified with full diagnostic STATUS pin （对比 Industrial-only high-side switches)
- Active inductive-load clamp integrated （对比 Discrete MOSFET without clamp)
设计说明
Estimated: the SOT-223 thermal pad must be soldered to at least 1 cm^2 of copper pour to achieve the datasheet-stated 65 K/W junction-to-ambient thermal resistance. At 700 mA continuous load, the conduction loss is approximately 0.16 ohm x (0.7 A)^2 = 0.078 W, producing a junction rise of about 5 C above the tab temperature. For derating at elevated ambient temperatures, calculate T_junction = T_ambient + (0.078 W + P_dynamic) x RthJA and ensure T_junction stays below 150 C.
Place a 100 nF decoupling capacitor close to the IN pin (pin 1) to filter supply transients and load-dump events. Keep the STATUS trace away from the OUT switching node to avoid coupling noise into the diagnostic feedback. The SOT-223 thermal tab should connect to a copper pour on at least one PCB layer (preferably top layer) with thermal via arrays to inner ground planes for additional heat spreading.
Do not exceed 34 V on the IN pin or the internal overvoltage clamp will activate and dissipate significant energy. Avoid operating below 5 V - the internal charge pump cannot generate sufficient gate drive and the FET will operate in the linear region, leading to high dissipation. The STATUS pin is open-drain and requires an external pull-up resistor; leaving it floating will not damage the device but prevents fault diagnostics.
合规信息
AEC-Q100 qualified per Infineon product page. RoHS and REACH compliant per distributor listings. Halogen-free status not explicitly stated in retrieved data - marked unknown per data authenticity rule.
