BTS3028SDLATMA1 - 5A Low-Side Smart Switch | Infineon
MPN: BTS3028SDLATMA1 ✓ NakahandaBTS3028SDLATMA1 Ulas
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.
Mga alternatibo na pwedeng ilagay na BTS3028SDLATMA1 — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok BTS3028SDLATMA1 (parehas na form factor at footprint) — pagkakaiba sa Package, Operating Temperature Range, Technology, Topology, Continuous Load Current.
BTS3028SDL
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
BTS452TATMA1
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →BTS3134NHUMA1
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →BTS3030SDL
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
BSL215CH6327XTSA1
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →BSS316NH6327XTSA1
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →BTS3028SDLATMA1 Mga Pinakamataas na Rating at Electrical Characteristics
| Product Type | Smart Low-Side Power Switch |
| Topolohiya | 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 |
| Hanay ng Temperature na Operasyon | -40 °C to +150 °C (T_j) |
| Packhaging | PG-TO252-3-11 (DPAK, 3-pin + tab) |
| Uri ng Pagpapasok | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified |
| Tindminan RoHS | Compliant |
Pin Configuration ng BTS3028SDLATMA1
| Pin 1 | GND — Ground / source return |
| Pin 2 | IN — Logic-level input (drives gate) |
| Pin 3 | STATUS — Open-drain status feedback |
| Pin Tab | OUT / Drain — Switched output (load return to ground via FET) |
Ligtas na Operating Area (DC)
Tipikal na mga Gamit
BTS3028SDLATMA1 ay nararapat para sa 6 aplikasyons: 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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for BTS3028SDLATMA1 — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | 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 |
Pangunahing mga Pagkakaiba
- Single-DPAK integrated smart switch with full protection suite (kumpara saDiscrete N-channel MOSFET + fuse)
- AEC-Q100 qualified for automotive use (kumpara saIndustrial-only low-side switches)
- 28 mΩ R_DS(on) in DPAK for 5 A continuous (kumpara saBSL215CH6327XTSA1 (smaller PG-TSOP-6 package))
Talaan ng Disenyo
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.
Impormasyon ng Pagsunod sa Kautusan
RoHS compliant and AEC-Q100 qualified per Infineon product page. Lead-free and halogen-free per PG-TO252-3-11 package documentation.
