BTS4175SGAXUMA1 - 1.3A Smart High-Side Switch | Infineon
MPN: BTS4175SGAXUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.42 | $14.20 |
| 100 | $1.18 | $118.00 |
| 500 | $0.97 | $485.00 |
| 1,000 | $0.82 | $820.00 |
| 2,500 | $0.71 | $1,775.00 |
BTS4175SGAXUMA1 Overview
A high-side power switch is a semiconductor device placed between the supply rail and the load, controlling load current by switching the high-side (positive) conductor rather than the low-side return. This topology keeps the load referenced to ground in the off state, which improves short-circuit safety and simplifies wiring diagnostics. Within the broader taxonomy, the BTS4175SGA sits in the high-side switch family, which belongs to power distribution switches, which are a subset of power management ICs (PMIC) and ultimately of semiconductor power devices. The Classic PROFET™ naming convention is Infineon's brand for its 24V smart high-side switches targeting automotive body and chassis modules.
Key features include overload protection with current limiting at approximately 1.3A peak, thermal shutdown with auto-restart, short-circuit protection, over-voltage clamp at the output, ESD protection on all pins, and diagnostic feedback through a status output pin. The CMOS-compatible input accepts 3.3V or 5V logic levels directly, eliminating the need for a level shifter. The integrated charge pump drives the N-channel MOSFET gate above the supply rail so the device can deliver true high-side switching from a single 24V supply.
Architecturally, the BTS4175SGA combines a vertical N-channel DMOS output stage, an on-chip charge pump, a sense-FET current-mirror for load-current monitoring, and a digital control block implementing protection timers and fault latching. The exposed thermal pad on the PG-DSO-8-24 package keeps junction-to-ambient thermal resistance low enough that the 1.3A rating is achievable without an external heatsink on standard 1- or 2-ounce copper FR-4 boards. The status pin distinguishes between normal operation, overtemperature, and open-load events for in-vehicle diagnostics (OBD) compliance.
Typical applications include automotive lighting modules (headlamps, tail-lamps, interior LED strings), resistive heating loads such as seat heaters and mirror defrosters, small DC motor drivers for window lifters and door locks, and industrial 24V solenoid/valve switching. The device is also suitable as a general-purpose protected high-side driver in PLC digital outputs and process-control instrumentation.
When designing with the BTS4175SGA, pay close attention to input-to-output ground-loop layout, keep the input capacitor close to the Vbb pin, and ensure the exposed pad receives a copper pour of at least 1 cm² for thermal relief. Designers should also verify cold-crash and load-dump transient behaviour against ISO 7637-2 waveforms, since automotive 24V buses can swing well above the nominal supply during cranking events.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, offering engineers a single reference for sourcing, replacement, and PCB-level implementation of the BTS4175SGAXUMA1.
Drop-in alternatives for BTS4175SGAXUMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with BTS4175SGAXUMA1 (same form factor and footprint) — differing in Package, Topology, RoHS Status, Continuous Load Current, Diagnostic Output.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BTS4175SGA
✅ Drop-In📋 Reference alternative (not in catalog)
BTS50085-1TMA
✅ Drop-In📋 Reference alternative (not in catalog)
BSP752RXUMA2
✅ Drop-In✓ In Stock
$0.94 / Unit
View Datasheet →ISP752TFUMA1
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →BTS441RGATMA1
✅ Drop-In✓ In Stock
$2.21 / Unit
View Datasheet →BTS4175SGAXUMA1 Maximum Ratings & Electrical Characteristics
| Product Type | Smart High-Side Power Switch |
| Topology | 1:1 N-Channel High-Side |
| Nominal Load Current | 1.3 A |
| Supply Voltage (Vbb) | 6 V to 18 V (operating range up to 24 V) |
| Overload Current Limit | 1.3 A (typ) |
| Input Logic Compatibility | CMOS 3.3V / 5V |
| Protection Features | Overload, Short-Circuit, Over-Temperature, Over-Voltage Clamp, ESD |
| Diagnostic Output | Status pin (open-drain) |
| Package | PG-DSO-8-24 (8-pin DSO with exposed pad) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +150 C junction |
| Family | Classic PROFET™ 24V |
| RoHS Status | RoHS3 Compliant |
| Qualification | AEC-Q100 automotive qualified |
BTS4175SGAXUMA1 Pin Configuration
| Pin 1 | OUT — Switched output to load |
| Pin 2 | Vbb — Battery / 24V supply |
| Pin 3 | GND — Ground |
| Pin 4 | IN — Logic input (CMOS 3.3V/5V) |
| Pin 5 | ST — Status / diagnostic output (open-drain) |
| Pin 6 | NC — Not connected (per datasheet) |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | EP — Exposed pad (thermal pad, connect to GND) |
Typical Applications
BTS4175SGAXUMA1 is suitable for 6 applications: Automotive LED Tail-Lamp Driver, Resistive Heater Load Switching, Small DC Motor Driver (Windows/Door Locks), Industrial 24V Solenoid and Valve Switching, Body Control Module (BCM) Protected Outputs, General-Purpose Protected High-Side Driver.
Automotive LED Tail-Lamp Driver
The BTS4175SGAXUMA1 is widely deployed in 24V automotive tail-lamp modules where each LED string requires a protected high-side switch. Its 1.3A continuous current drives typical 5-7W tail/brake LED chains, while the integrated overload and short-circuit protection prevents thermal runaway when a single LED fails short. The status pin reports open-load faults to the body control module, supporting OBD-II diagnostics required in modern vehicles. PWM dimming on the IN pin allows daytime-running-light brightness control without external FETs.
Recommended
Resistive Heater Load Switching
Seat heaters, mirror defrosters, and steering-wheel heaters draw 1-2A from the 24V automotive bus and benefit from the BTS4175SGA's 1.3A rating with built-in thermal shutdown. The exposed thermal pad dissipates the inrush and steady-state conduction heat through PCB copper, eliminating an external heatsink. The over-temperature auto-restart behaviour protects the heater element from runaway conditions, and the CMOS input allows direct connection to a microcontroller GPIO for timer-based comfort control.
Recommended
Small DC Motor Driver (Windows/Door Locks)
Window lifters and central door-lock actuators require peak currents of 1-1.3A during motor start, which the BTS4175SGA can supply within its inrush tolerance. The device's diagnostic output distinguishes between a stalled motor (high current, thermal event) and an open wire, helping the body controller log specific fault codes. For bidirectional motor control, two BTS4175SGAXUMA1 devices in an H-bridge configuration replace a relay-based solution, reducing PCB area and audible relay click noise.
Recommended
Industrial 24V Solenoid and Valve Switching
Industrial PLCs and process-control systems use 24V solenoids and pneumatic valves that the BTS4175SGA can switch directly from a logic-level output. The 6V-18V operating range tolerates supply variation in factory environments, while over-voltage clamping at the output protects the device from inductive kickback when the solenoid de-energises. The diagnostic pin can be wired to a PLC digital input to confirm switch state, enabling predictive maintenance on valve assemblies.
Recommended
Body Control Module (BCM) Protected Outputs
Each output channel of an automotive BCM that switches 24V loads benefits from the BTS4175SGA's combination of high-side switching, protection, and diagnostics. Multiple BTS4175SGAXUMA1 parts can share a common Vbb rail, and the status pins feed a multiplexer back to the BCM microcontroller for centralized fault handling. The PG-DSO-8-24 footprint allows 1-2mm pitch placement, fitting dense BCM PCB layouts with 12+ protected outputs per board.
Recommended
General-Purpose Protected High-Side Driver
Outside the automotive context, the BTS4175SGA is an excellent drop-in protected high-side switch for any 12V/24V load up to 1.3A - including robotics actuators, building automation relays, and battery-powered equipment. The integrated protection eliminates the need for fuses, PTCs, or external sense resistors, and the CMOS input allows direct drive from 3.3V microcontrollers. Designers benefit from AEC-Q100 grade robustness even in industrial settings, gaining extra ESD and thermal margin.
Recommended
Recommended Products Summary
Engineering reference data for BTS4175SGAXUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS4175SGA | BTS50085-1TMA | BSP752RXUMA2 | ISP752TFUMA1 | BTS441RGATMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-DSO-8-24 | PG-DSO-8-24 - same | PG-DSO-8-24 - same | PG-DSO-8-24 - same | PG-DSO-8-24 - same | PG-DSO-8-24 - same |
| Nominal Load Current | 1.3 A | 1.3 A | ~1.5 A | 1.3 A | 1.3 A | ~2 A |
| Family | Classic PROFET™ 24V | Classic PROFET™ 24V | Classic PROFET™ 24V | Classic PROFET™ 24V | Classic PROFET™ 24V | Classic PROFET™ 24V |
| Supply Voltage Range | 6 V - 18 V (24V load-dump tolerant) | 6 V - 18 V | 6 V - 18 V | 6 V - 18 V | 6 V - 18 V | 6 V - 18 V |
| Diagnostic Status Pin | Yes (open-drain) | Yes | Yes | Yes | Yes | Yes |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- AEC-Q100 automotive grade with full diagnostic output (vs ISP752TFUMA1)
- Higher current headroom within same footprint (vs BTS50085-1TMA)
- Optimized thermal pad layout for compact BCM designs (vs BSP752RXUMA2)
Design Notes
The PG-DSO-8-24 package dissipates heat primarily through the exposed pad (pin 8). Provide a copper pour of at least 1 cm² on the top layer and stitch thermal vias (0.3mm drill, 1mm pitch) to inner-layer ground planes. At 1.3A continuous load with 24V supply, the on-state conduction loss is the dominant heat source; verify junction temperature stays below 150C with the worst-case ambient. Estimated: at 1.3A and RON ~200mOhm, conduction loss is ~0.34W which is easily handled by standard 1oz copper without active cooling.
Place a 100nF ceramic decoupling capacitor as close as possible to the Vbb pin (pin 2) to suppress supply transients and load-dump events. Add a bulk electrolytic or tantalum capacitor (>=10uF) on the Vbb rail to handle the inrush current of capacitive loads. Keep the ground return path (pin 3 and exposed pad) short and direct to avoid ground bounce that can corrupt the status pin logic levels.
Do not float the IN pin - it must be driven actively high or low, or tied to GND through a 10kOhm resistor if unused, otherwise the device may oscillate or draw excessive quiescent current. The status pin is open-drain and requires an external pull-up resistor (typically 10kOhm to 5V). Do not exceed the maximum load inductance limit specified in the datasheet without an external freewheeling diode, as the internal over-voltage clamp has finite energy absorption.
Compliance Information
AEC-Q100 qualified per Infineon product page. RoHS3 compliant. Not subject to REACH SVHC listing as of 2026-09-15.
