BTS70081EPAXUMA1 - 10A Smart High-Side Switch | Infineon PROFET
MPN: BTS70081EPAXUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.79 | $179.00 |
| 500 | $1.46 | $730.00 |
| 1,000 | $1.18 | $1,180.00 |
| 2,500 | $0.96 | $2,400.00 |
Drop-in alternatives for BTS70081EPAXUMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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View Datasheet →BTS70081EPAXUMA1 Maximum Ratings & Electrical Characteristics
| Product Type | Smart High-Side Power Switch (PROFET) |
| Topology | 1:1 N-Channel High-Side Switch |
| Continuous Load Current | 10 A |
| On-State Resistance (RDS(on) typ.) | 9 mOhm |
| Operating Supply Voltage | 6 V to 18 V |
| Load-Dump Survival Voltage | 28 V (per AEC-Q100) |
| Diagnostic Output | Open-drain status / current sense |
| Protection Features | Reverse battery, over-load, short-circuit, over-temperature, over-voltage clamp, ground loss |
| Operating Temperature Range | -40 C to +150 C (Tj) |
| Package | PG-TSDSO-14-22 (14-pin, exposed pad) |
| Package Width | 3.90 mm (TSSOP-14 EP equivalent) |
| Mounting Type | Surface Mount |
| AEC-Q100 Qualification | Qualified (automotive grade) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
BTS70081EPAXUMA1 Pin Configuration
| Pin 1 | OUT — Power output to load |
| Pin 2 | OUT — Power output to load |
| Pin 3 | OUT — Power output to load |
| Pin 4 | VBB — Battery supply voltage |
| Pin 5 | VBB — Battery supply voltage |
| Pin 6 | GND — Ground reference |
| Pin 7 | IS — Current sense / diagnostic output |
| Pin 8 | IN — Logic input (CMOS-compatible enable) |
| Pin 9 | NC — Not connected (per datasheet) |
| Pin 10 | NC — Not connected (per datasheet) |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | NC — Not connected (per datasheet) |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | EP — Exposed pad - thermal and GND |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
BTS70081EPAXUMA1 is suitable for 6 applications: Automotive LED Lighting Modules, Body Control Module (BCM) Load Drivers, HVAC Flap and Blower Motor Drivers, Powertrain Sensor Power Switching, Industrial 24V PLC Digital Outputs, Battery Management System (BMS) Precharge Control.
Automotive LED Lighting Modules
The BTS70081EPAXUMA1 drives automotive LED modules including daytime running lights, tail lamps, and interior lighting with up to 10 A continuous current. Its 9 mOhm RDS(on) minimizes conduction loss and thermal rise, while the capacitive-load switching mode suppresses inrush currents during cold-start of LED strings. The diagnostic pin provides per-string open-circuit and short-circuit detection required by ISO 26262 functional-safety standards, and AEC-Q100 qualification ensures reliability across the automotive temperature range. Compared to discrete MOSFET plus fuse solutions, this PROFET integrates reverse-battery, over-current, and over-temperature protection in one IC, reducing BOM count by 6-8 parts and improving long-term reliability through elimination of fuse aging.
Recommended
Body Control Module (BCM) Load Drivers
Within automotive Body Control Modules, the BTS70081EPAXUMA1 serves as a high-side switch for door-lock actuators, mirror-fold motors, and window-lift relays. The 10 A continuous rating covers most body-electronic inductive loads, and the integrated inductive-load clamp (active avalanche) protects the IC when de-energizing solenoids. The exposed-pad PG-TSDSO-14-22 package keeps the IC cool enough to operate in the sealed BCM enclosure behind the dashboard. Diagnostic feedback to the BCM microcontroller enables fault logging for warranty analysis and predictive maintenance, while AEC-Q100 grade 1 qualification supports engine-bay and door-mounted BCMs that see extreme temperature swings.
Recommended
HVAC Flap and Blower Motor Drivers
The BTS70081EPAXUMA1 powers HVAC air-flap actuators and low-power blower motors in automotive climate-control systems. The 9 mOhm RDS(on) delivers high efficiency at the 5-8 A typical operating current of small DC blower motors, reducing battery drain during extended HVAC operation. Built-in short-to-ground and short-to-battery detection protects the wiring harness from chafing failures, and over-temperature shutdown prevents catastrophic IC failure if the motor seizes. The PG-TSDSO-14-22 small footprint allows multiple BTS70081EPAXUMA1 devices to be placed in close proximity on a single HVAC control PCB, driving each flap actuator independently under PWM speed control.
Recommended
Powertrain Sensor Power Switching
The BTS70081EPAXUMA1 provides switched battery power to powertrain sensors including oxygen sensors, MAP/MAF sensors, and exhaust-gas temperature probes. The diagnostic current-sense output allows the ECU to verify sensor load integrity during pre-start self-tests, a key requirement for OBD-II compliance. Reverse-battery protection safeguards expensive powertrain ECUs from accidental jump-start polarity reversal, while the 28 V load-dump survival rating handles jump-start transients without external TVS diodes. AEC-Q100 grade 1 qualification and 150 C maximum junction temperature support under-hood mounting where ambient can exceed 125 C.
Recommended
Industrial 24V PLC Digital Outputs
Although AEC-Q100 qualified, the BTS70081EPAXUMA1's 18 V continuous / 28 V transient rating suits industrial 24V PLC digital-output modules as well, when operating margins stay within automotive load-dump limits. The 10 A continuous rating drives solenoids, small DC relays, and indicator lamps with a single IC per channel. The exposed-pad package enables screw-terminal PLC modules to dissipate heat through the metal chassis, and the diagnostic output simplifies IEC 61131-3 fault reporting to the PLC CPU. Designers must verify the absolute maximum ratings against their specific 24V rail transient profile, which can exceed automotive load-dump in some factory environments.
Recommended
Battery Management System (BMS) Precharge Control
The BTS70081EPAXUMA1 implements precharge-path switching in automotive and stationary lithium-ion BMS systems, controlling the precharge resistor that limits inrush current when connecting a discharged battery pack to a DC bus. The 10 A continuous rating covers the precharge phase for packs up to several hundred ampere-hours, and the integrated current-limit feature protects the precharge resistor from overload if the contactor fails to close. AEC-Q100 qualification ensures reliable operation in EV battery packs exposed to wide temperature cycles, and the diagnostic output reports precharge completion to the BMS controller for contactor-closure timing optimization.
Recommended
Recommended Products Summary
Engineering reference data for BTS70081EPAXUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS70081-1EPA | BTS70121EPAXUMA1 | BTS70202EPAXUMA1 | BTS700201ESPXUMA2 | BSP762TXUMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-TSDSO-14-22 (TSSOP-14 EP) | PG-TSDSO-14-22 - same | PG-TSDSO-14-22 - same | PG-TSDSO-14-22 - same | PG-TSDSO-14-22 - same | PG-TSDSO-14-22 - same |
| Continuous Load Current | 10 A | 10 A | 21 A | 10 A per channel (x2) | 2 A | 1 A |
| On-State Resistance (typ.) | 9 mOhm | 9 mOhm | 4.5 mOhm | 9 mOhm per channel | 200 mOhm | [DATA_NEEDED] |
| Number of Channels | 1 | 1 | 1 | 2 | 1 | 1 |
| Operating Voltage | 6 V to 18 V | 6 V to 18 V | 6 V to 18 V | 6 V to 18 V | 6 V to 18 V | 5 V to 18 V |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes |
| Diagnostic Output | Current sense (analog IS) | Current sense | Current sense | Current sense per channel | Status (digital) | Status (digital) |
| Family | PROFET+2 12V | PROFET+2 12V | PROFET+2 12V | PROFET+2 12V | PROFET+2 12V | Classic PROFET |
Key Differentiators
- Best RDS(on) per dollar in single-channel 10 A PROFET+2 family (vs BTS70121EPAXUMA1)
- Single-channel isolation enables per-load fault handling (vs BTS70202EPAXUMA1)
- PROFET+2 analog current-sense vs. digital status output (vs BTS700201ESPXUMA2)
Design Notes
Estimated: at 10 A continuous load and 9 mOhm RDS(on), the BTS70081EPAXUMA1 dissipates approximately 0.9 W (P = I^2 x R). The PG-TSDSO-14-22 exposed pad must be soldered to a continuous ground copper pour of at least 200 mm^2 to keep theta_JA below 50 C/W. Without adequate copper, junction temperature can exceed 150 C at 85 C ambient, triggering thermal shutdown. For continuous 10 A operation, design the PCB with 4-layer construction and 2 oz copper on outer layers.
Place a 100 nF X7R ceramic decoupling capacitor as close as possible to the VBB pins, with trace length below 3 mm. Use wide, short power traces for VBB and OUT to minimize voltage transients during switching. The exposed pad requires at least 8 thermal vias (0.3 mm drill) to inner-layer ground planes for optimal heat spreading. Keep the IS sense trace away from switching nodes to prevent capacitive coupling that would corrupt current-sense accuracy.
Do not exceed the 28 V load-dump survival rating - sustained voltages above this will trigger permanent over-voltage clamp activation. The reverse-battery protection requires an external ground resistor (typically 1 kOhm) in series with the GND pin; omitting this component destroys the IC during polarity reversal. The diagnostic IS pin output current is not fail-safe - the host MCU must detect a stuck-high or stuck-low condition and interpret it as a fault rather than a valid load-current reading.
Compliance Information
AEC-Q100 qualified per Infineon product page. RoHS compliant. Halogen-free per Infineon PROFET family standard. Designed for automotive 12V power distribution networks.
