BTS500251TEAAUMA1 - 24A Smart High-Side Switch | Infineon PROFET+
MPN: BTS500251TEAAUMA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.585 | $5.59 |
| 10 | $3.18 | $31.80 |
| 100 | $2.75 | $275.00 |
| 500 | $2.39 | $1,195.00 |
| 1,000 | $2.27 | $2,270.00 |
BTS500251TEAAUMA1 Overview
What is a smart high-side switch? A smart high-side switch is an integrated power semiconductor that sits between a load and the positive supply rail. It replaces discrete MOSFETs, fuses, and relay logic with a single IC that controls the load via a logic-level input while continuously monitoring current, temperature, and supply voltage. Within the broader hierarchy, a high-side switch belongs to power distribution switches, which are part of the power management IC family used to drive resistive or inductive loads such as motors, heaters, lamps, and solenoids.
Key specifications include a 2.5 mΞ© typical on-state resistance, 24 A continuous load current capability, and a logic-level (3.3 V/5 V) CMOS-compatible input. The device operates across 4.5 V to 28 V supply, with reverse battery protection rated for -28 V and load-dump robustness up to 42 V. Embedded diagnostics report open-load, short-to-ground, short-to-battery, and overtemperature faults through a current-sense IS pin. The PG-TO252-5-11 package offers a thermal resistance around 35 C/W junction-to-ambient on a standard 1 oz copper JEDEC test PCB, enabling sustained high-current switching without external heatsinking.
The BTS50025-1TEA uses a vertical N-channel DMOS output stage driven by a charge-pump-assisted gate driver. This topology gives very low R_DS(on) for reduced conduction losses, while the integrated charge pump keeps the gate enhancement high enough to fully turn on the DMOS at low battery voltages. Reverse-polarity protection is implemented on-die, eliminating the need for an external blocking diode and saving both board space and forward-voltage drop.
Typical applications include automotive glow-plug and PTC heater drivers, electric water-oil-fuel pumps, HVAC blower fans, LED lighting modules, and industrial 24 V solenoid or valve drivers. The wide operating range also makes it attractive for 48 V mild-hybrid auxiliary loads. Designers appreciate the family for combining a small footprint with the diagnostic feedback that modern ECU architectures require.
When designing with this part, observe the datasheet's recommended PCB copper layout for the drain tab to keep thermal resistance within budget. The IS pin output requires an external sense resistor and, for high-accuracy current monitoring, a low-pass filter to reject switching transients. Reverse-battery events must be checked against the -28 V rating for the application's worst-case jump-start and load-dump profile.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the Infineon datasheet, giving engineers a faster path from selection to qualified PCB.
Drop-in alternatives for BTS500251TEAAUMA1 β 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 BTS500251TEAAUMA1 (same form factor and footprint) β differing in Family, Number of Channels, Package, Product Type.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
BTS50025-1TEA
β Drop-Inπ Reference alternative (not in catalog)
BTS50080-1TEA
β Drop-Inπ Reference alternative (not in catalog)
BTS5012-1EKB
β Drop-Inπ Reference alternative (not in catalog)
BTS5045-2EKA
β Drop-Inπ Reference alternative (not in catalog)
BTS710336ESAXUMA1
β Drop-Inβ In Stock
$2.45 / Unit
View Datasheet βBTS500251TEAAUMA1 Maximum Ratings & Electrical Characteristics
| Product Type | Smart High-Side Power Switch |
| Family | Power PROFET+ |
| Number of Channels | 1 |
| On-State Resistance (RDS(on) typ.) | 2.5 mΞ© |
| Continuous Load Current | 24 A |
| Supply Voltage Range (nominal) | 4.5 V to 28 V |
| Reverse Battery Protection | -28 V |
| Load-Dump Robustness | 42 V |
| Input Logic Level | CMOS 3.3 V / 5 V compatible |
| Output Configuration | High-side, N-channel MOSFET |
| Current Sense Output (IS pin) | Yes, analog proportional load current |
| Diagnostic Functions | Open-load, short-to-GND, short-to-VBAT, overtemperature |
| Protection Features | Overtemperature shutdown, overcurrent limit, overvoltage clamp, ESD |
| Package | PG-TO252-5-11 (DPAK-5 equivalent, 5 leads + tab) |
| Operating Temperature (junction) | -40 C to +150 C |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Automotive Qualification | AEC-Q100 qualified |
BTS500251TEAAUMA1 Pin Configuration
| Pin 1 | IN β Logic-level input (3.3 V/5 V CMOS); high turns on the high-side switch |
| Pin 2 | GND β Ground reference for logic and current-sense circuitry |
| Pin 3 | IS β Analog current-sense output; current proportional to load current via internal ratio |
| Pin 4 | Vbb β Battery / supply voltage input (4.5 V to 28 V nominal, 42 V load-dump tolerant) |
| Pin 5 | NC β Not connected (per Infineon PG-TO252-5-11 pinout) |
| Pin Tab | OUT β Switched output / drain to the load; also serves as thermal pad |
Safe Operating Area (BTS50025-1TEA, indicative)
Typical Applications
BTS500251TEAAUMA1 is suitable for 6 applications: Automotive PTC Heater Driver, Electric Water/Oil/Fuel Pump Control, HVAC Blower Fan Driver, LED Headlight Module Driver, 48 V Mild-Hybrid Auxiliary Load, Industrial 24 V Solenoid/Valve Bank.
Automotive PTC Heater Driver
Why the BTS500251TEAAUMA1 fits PTC heater driving: the device's 24 A continuous rating covers typical 12 V cabin and seat-heater PTC elements, while its 2.5 mΞ© RDS(on) keeps conduction loss below 1.5 W at full load. The integrated overtemperature and overcurrent limits protect the PTC element from cold-start inrush without an external fuse. Use case: place the part between Vbat and the PTC stack, drive the IN pin from a 3.3 V GPIO, and read IS for closed-loop temperature monitoring via the PTC's resistance curve.
Recommended
Electric Water/Oil/Fuel Pump Control
Why this PROFET fits pump control: brushed DC pumps draw high inrush current that the BTS500251TEAAUMA1's 42 V load-dump and overcurrent clamp handle cleanly. The 24 A continuous headroom covers pump ratings up to roughly 250 W at 12 V without thermal derating on a properly designed PCB copper pour. How it is used: the IN pin is PWM-modulated at 100-300 Hz for variable flow; the IS pin returns a current-proportional analog signal the ECU uses for closed-loop flow estimation and dry-run detection.
Recommended
HVAC Blower Fan Driver
Why the BTS500251TEAAUMA1 fits HVAC blowers: blower motors present inductive kick-back at switch-off that the part's internal clamp and overvoltage protection absorb. The 24 A capability supports up to ~290 W at 12 V, covering most single-speed blower applications. How it is used: drive IN with a PWM signal at 25-100 Hz to vary blower speed; the IS feedback lets the climate-control module detect stall or locked-rotor conditions by sensing current deviation from the expected speed-dependent profile.
Recommended
LED Headlight Module Driver
Why this switch fits LED modules: constant-current LED strings require precise current regulation, which the BTS500251TEAAUMA1's IS pin enables through a sense resistor in the load path. The 2.5 mΞ© RDS(on) reduces thermal stress on the PCB in headlamp housings already challenged by ambient temperature. How it is used: configure the LED string to drop below Vbat by 1-2 V, drive IN from a 5 V logic signal, and use IS feedback to implement PWM dimming with closed-loop current trim. The result is a compact, diagnostic-rich LED driver that fits standard headlamp PCBs.
Recommended
48 V Mild-Hybrid Auxiliary Load
Why the BTS500251TEAAUMA1 fits 48 V auxiliaries: with a 28 V nominal supply ceiling and 42 V load-dump tolerance, the part handles most 48 V mild-hybrid aux-loads after a pre-regulator stage, and its reverse-battery rating protects against service-disconnect mistakes. How it is used: install downstream of a 48 V-to-24 V buck converter powering accessories such as electric turbo coolant pumps or air-conditioning compressors; the IS pin gives the DC-DC controller telemetry for load-sharing across parallel converters.
Recommended
Industrial 24 V Solenoid/Valve Bank
Why this switch fits 24 V industrial solenoid banks: the wide 4.5 V to 28 V supply range covers 24 V industrial rails directly, and 24 A per channel allows multiplexing of multiple solenoids through the same PROFET. The integrated diagnostic feedback simplifies PLC fault detection in factory-automation cabinets. How it is used: assign one BTS500251TEAAUMA1 per solenoid cluster, route the IN pin to a PLC digital output, and use IS to detect stuck-valve conditions (current draw outside expected actuation window).
Recommended
Recommended Products Summary
Engineering reference data for BTS500251TEAAUMA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS50025-1TEA | BTS50080-1TEA | BTS5012-1EKB | BTS5045-2EKA | BTS710336ESAXUMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TO252-5-11 | PG-TO252-5-11 | PG-TO252-5-11 | PG-TO252-5-11 | PG-TO252-5-11 | PG-TO252-5-11 |
| Supply Voltage Range | 4.5 V to 28 V | 4.5 V to 28 V | 4.5 V to 28 V | 4.5 V to 28 V | 4.5 V to 28 V | 4.5 V to 28 V |
| Reverse Battery Protection | -28 V | -28 V | -28 V | -28 V | -28 V | -28 V |
| Current Sense Output | Yes (IS pin, analog) | Yes (IS pin) | Yes (IS pin) | Yes | Yes | Yes |
| Number of Channels | 1 | 1 | 1 | 1 | 2 | 4 |
| Automotive Qualification | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
Key Differentiators
- Lower RDS(on) than mid-range PROFET+ family members (vs BTS5012-1EKB)
- Single-channel simplicity with 24 A headroom (vs BTS710336ESAXUMA1)
- Higher continuous current than two-channel sibling (vs BTS5045-2EKA)
- Lower current class than peak-load sibling (vs BTS50080-1TEA)
Design Notes
Estimated: at 24 A continuous and RDS(on) of 2.5 mΞ©, the BTS500251TEAAUMA1 dissipates approximately 1.44 W (24 A squared Γ 2.5 mΞ©). On a JEDEC 1s0p test PCB with theta_JA around 35 C/W, junction temperature rises 50 C above ambient at full load. For sustained 24 A operation, provide at least 6 cmΒ² of 2 oz copper on the drain tab and vias to inner power planes. Drop to 15 A continuous on a 1 oz four-layer board with 1 cmΒ² copper.
Place a 100 nF ceramic decoupling capacitor as close as possible between Vbb (pin 4) and GND (pin 2) to filter high-frequency switching transients. Add a bulk electrolytic or polymer capacitor (β₯ 47 Β΅F) at the module input to absorb load-dump energy. Keep the IS trace short and guarded by GND to minimize noise pickup; a 1-10 kΞ© resistor plus 100 nF capacitor on IS provides a clean low-pass filter for the analog current-sense signal.
Use a star-ground topology with the PROFET's GND pin returning directly to the battery negative or chassis ground, avoiding shared ground paths with logic-level MCU traces. The drain tab should use multiple thermal vias (β₯ 9 Γ 0.3 mm) to inner copper planes. Keep high-current load traces wide (β₯ 5 mm for 24 A) and away from sensitive analog signal traces. If the load is inductive (motor, solenoid, relay coil), add a flyback clamp or TVS across the load.
Do not exceed the -28 V reverse-battery rating during jump-start events with reversed polarity; service-bay mistakes can destroy the part. Always verify IS-pin scaling (kILIS ratio) against the replacement datasheet when swapping to a different PROFET variant - the same 24 A load produces different IS voltages across family members. Avoid leaving the IN pin floating; if the MCU GPIO is high-impedance during boot, tie IN to GND through a 100 kΞ© pull-down to guarantee the switch stays off.
Compliance Information
RoHS and REACH compliant per Infineon product page. AEC-Q100 qualified for automotive applications. Halogen-free per JEDEC JS709B. Conflict-minerals compliant per Infineon supply-chain disclosures.
