BTS3028SDLATMA1 - 5A Low-Side Smart Switch | Infineon
MPN: BTS3028SDLATMA1 ✓ Hoạt độngBTS3028SDLATMA1 Tóm tắt
A low-side switch is a power switch placed between the load and ground, allowing the load to be grounded on one terminal. Smart low-side switches integrate the MOSFET and protection logic into a single IC, replacing discrete MOSFET-plus-driver solutions. They sit hierarchically within the broader category of power distribution switches, which are sub-classes of power management ICs used in 12 V/24 V automotive and industrial buses.
Key specifications include an operating voltage range of 2 V to 10 V (load supply), a typical on-state resistance of 28 mΩ at 25 °C, continuous drain current up to 5 A, and a junction temperature range of -40 °C to +150 °C. The device is AEC-Q100 qualified for automotive environments and offers status feedback via a STATUS pin, supporting fault detection and load diagnostics. Its monolithic integration reduces PCB area versus a discrete MOSFET plus a fuse or external current-sense circuit.
Typical applications include automotive body and chassis loads (lighting, solenoids, motors), industrial 24 V relay and valve drivers, PLC digital outputs, and any 12 V/24 V load requiring resettable overcurrent protection. The device is particularly useful where a fuse-replacement function is desired, since its current limit and thermal shutdown provide automatic fault recovery without fuse replacement.
When designing with this part, observe the SOA limits in the datasheet, ensure the STATUS pull-up is correctly biased, and provide sufficient copper area on the tab for heatsinking. Compared with discrete MOSFETs, the integrated protection reduces BOM count, but the on-resistance is higher than the lowest-RDS(on) discrete parts — a trade-off in favor of protection and diagnostic features.
This page synthesizes distributor pricing across six channels, drop-in alternatives in the same DPAK footprint, and practical design notes for both automotive and industrial 24 V buses — practical context not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho BTS3028SDLATMA1 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với BTS3028SDLATMA1 (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature Range, Technology, Topology, Continuous Load Current.
BTS3028SDL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
BTS452TATMA1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →BTS3134NHUMA1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →BTS3030SDL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
BSL215CH6327XTSA1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →BSS316NH6327XTSA1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →BTS3028SDLATMA1 Tỷ lệ tối đa & tính chất điện
| Product Type | Smart Low-Side Power Switch |
| Cấu trúc | 1:1 N-Channel, Single Channel |
| Load Supply Voltage Range | 2 V to 10 V |
| Continuous Drain Current (I_D) | 5 A |
| On-State Resistance (R_DS(on)) | 28 mΩ (typ at 25 °C, V_IN = 5 V) |
| Overvoltage Clamp | Yes (integrated) |
| Overtemperature Shutdown | Yes (integrated) |
| Current Limitation | Yes (integrated) |
| ESD Protection | Yes (integrated) |
| STATUS Feedback Pin | Yes |
| Khoảng nhiệt độ hoạt động | -40 °C to +150 °C (T_j) |
| Hộp | PG-TO252-3-11 (DPAK, 3-pin + tab) |
| Kiểu lắp đặt | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified |
| Trạng thái RoHS | Compliant |
Cấu hình chân BTS3028SDLATMA1
| Chân 1 | GND — Ground / source return |
| Chân 2 | IN — Logic-level input (drives gate) |
| Chân 3 | STATUS — Open-drain status feedback |
| Chân Tab | OUT / Drain — Switched output (load return to ground via FET) |
Khu vực hoạt động an toàn (DC)
Ứng dụng tiêu biểu
BTS3028SDLATMA1 phù hợp cho 6 Áp dụngs: Automotive Body & Lighting Loads, Solenoid and Valve Drivers (24 V Industrial), PLC Digital Outputs, Relay Replacement / Smart Fuse, DC Motor Drive (Small Brushed), LED Driver Low-Side Switch.
Automotive Body & Lighting Loads
The BTS3028SDLATMA1 is designed for 12 V/24 V automotive body and chassis loads such as lamps, LED drivers, and small motors. With 5 A continuous current and 28 mΩ R_DS(on), it can drive a pair of 55 W headlamps with low conduction loss. The integrated overtemperature shutdown, overvoltage clamp, and STATUS feedback enable AEC-Q100 qualified ECUs to detect open-load and short-circuit faults without external fuses.
Được đề xuất
Solenoid and Valve Drivers (24 V Industrial)
In industrial PLCs and process-control boards, the BTS3028SDLATMA1 drives 24 V solenoids, valves, and relay coils. Its 28 mΩ R_DS(on) keeps dissipation manageable at 5 A, while integrated current-limit protection prevents coil-induced transients from destroying the FET. The STATUS pin can signal the PLC CPU when a load is open or shorted, enabling predictive maintenance.
Được đề xuất
PLC Digital Outputs
As a low-side switch in a PLC digital-output module, the BTS3028SDLATMA1 replaces discrete MOSFET-plus-fuse circuits with a single AEC-Q100 qualified IC. Its 5 A rating covers most 24 V field-side loads, while integrated current limiting and thermal shutdown provide resettable overcurrent protection — eliminating fuse replacement in the field.
Được đề xuất
Relay Replacement / Smart Fuse
The BTS3028SDLATMA1 functions as a resettable electronic fuse in 12 V/24 V distribution systems. Compared to a traditional fuse, it offers current limiting, thermal shutdown, and STATUS-based fault signaling — all in a single DPAK. This reduces service costs in deployed systems and enables remote fault diagnostics over CAN/LIN buses.
Được đề xuất
DC Motor Drive (Small Brushed)
For small brushed DC motors (window lifts, seat adjusters, mirror actuators), the BTS3028SDLATMA1 provides a compact low-side drive stage. Its 5 A continuous rating handles typical small-motor stall currents, and integrated protection prevents destruction from locked-rotor events. For bidirectional drive, two BTS3028SDLATMA1 devices in an H-bridge configuration are typically used.
Được đề xuất
LED Driver Low-Side Switch
The BTS3028SDLATMA1 can switch LED strings in automotive tail-light, daytime-running-light, and interior-lighting modules. With its 28 mΩ R_DS(on) and 5 A capability, it drives LED chains up to roughly 60 W. Integrated protection ensures survival of LED short-circuit faults — a common failure mode in automotive lighting.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho BTS3028SDLATMA1 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | BTS3028SDL | BTS452TATMA1 | BTS3134NHUMA1 | BTS3030SDL |
|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TO252-3-11 (DPAK) | PG-TO252-3-11 (DPAK) - same | PG-TO252-3-11 (DPAK) - same | PG-TO252-3-11 (DPAK) - same | PG-TO252-3-11 (DPAK) - same |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes |
| Integrated Protection | OT, OV, CL, ESD | OT, OV, CL, ESD | OT, OV, CL, ESD | OT, OV, CL, ESD + diagnostics | OT, OV, CL, ESD |
| STATUS Feedback | Yes | Yes | Yes | Yes (enhanced) | Yes |
Bảo phân biệt quan trọng
- Single-DPAK integrated smart switch with full protection suite (vsDiscrete N-channel MOSFET + fuse)
- AEC-Q100 qualified for automotive use (vsIndustrial-only low-side switches)
- 28 mΩ R_DS(on) in DPAK for 5 A continuous (vsBSL215CH6327XTSA1 (smaller PG-TSOP-6 package))
Ghi chú thiết kế
Estimated: at 5 A continuous load and 28 mΩ R_DS(on), power dissipation is approximately 0.7 W, which raises junction temperature by roughly 70 °C above ambient on a standard 1 oz copper DPAK footprint. For sustained operation near 5 A, attach the tab to at least 1 sq inch of copper pour on a 2-layer FR-4 board. Above 100 °C ambient, thermal shutdown may engage — derate current or improve heatsinking accordingly.
Place a 100 nF ceramic decoupling capacitor near the IN pin to suppress logic-supply transients from the gate drive. Use wide copper traces on the OUT/tab to the load, as the full load current flows through this path. Connect the tab to a large copper pour for both electrical and thermal performance — this is the dominant heat-spreading path for the DPAK package.
Do not apply reverse battery voltage directly to the load supply without external protection — the BTS3028SDLATMA1 is not designed for sustained reverse polarity. Add a reverse-battery blocking diode or use Infineon's higher-voltage HITFET variants (e.g., BTS3134NHUMA1) if reverse polarity is required. Also, ensure the STATUS pull-up is rated for the load-supply voltage; tying it directly to a 5 V logic rail when the load is at 10 V can damage the open-drain transistor.
Thông tin tuân thủ
RoHS compliant and AEC-Q100 qualified per Infineon product page. Lead-free and halogen-free per PG-TO252-3-11 package documentation.
