BTG70902EPLXUMA1 - 2A PROFET+2 12V Smart High-Side Switch | Infineon
MPN: BTG70902EPLXUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.78 | $1.78 |
| 10 | $1.62 | $16.20 |
| 100 | $1.41 | $141.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $0.99 | $990.00 |
BTG70902EPLXUMA1 Overview
A smart high-side switch, also called a PROFET (Protected MOSFET), is a self-protected power semiconductor that combines a power MOSFET driver with diagnostic and protection logic in a single package. It sits between a microcontroller and a grounded load, replacing discrete relay or fuse circuits. Within the broader product hierarchy it belongs to power distribution switches, then power management ICs, then semiconductor ICs. The PROFET+2 12V generation emphasizes low standby current, accurate current sense, and AEC-Q100 automotive qualification.
Key features include fixed current limiting, short-circuit protection, over-temperature shutdown with latch behavior, over-voltage and under-voltage lockout, reverse battery protection, and slew-rate control for EMI mitigation. The integrated diagnostic interface reports fault status to the host MCU through the DEN pin, while the DSEL pin selects the active channel and the IN pin enables the output. These functions reduce external component count compared with discrete MOSFET designs.
The BTG70902EPLXUMA1 uses a vertical N-channel DMOS output structure driven by a CMOS control block containing charge pump, bandgap reference, gate driver, and protection comparators. This monolithic integration enables fast fault response (typically microseconds) and consistent protection thresholds across temperature. The exposed pad of the PG-TSDSO-14 package provides a low thermal resistance path, supporting continuous 2 A operation on moderate PCB copper area without external heatsinking.
Typical applications include automotive lighting (interior LED modules, tail lamps, courtesy lights), body control modules driving small motors and solenoids, heating elements such as seat heaters and mirror heaters, and resistive loads like reference grounds. The diagnostic output is particularly useful in ECU designs that require ISO 26262-style fault monitoring or end-of-line load verification.
When designing with the BTG70902EPLXUMA1, follow Infineon PROFET application guidelines for input capacitor selection, PCB copper area, and reverse-battery protection. Use the DEN pin in normal-low idle mode to minimize quiescent current; do not leave IN floating, as this may cause undefined output behavior.
This page synthesizes Infineon datasheet parameters, distributor pricing across DigiKey, Mouser, LCSC and Octopart, and engineering design considerations not found in any single source.
Drop-in alternatives for BTG70902EPLXUMA1 — 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 BTG70902EPLXUMA1 (same form factor and footprint) — differing in Package, Operating Temperature, Number of Channels, Diagnostic Output, Product Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BTS710336ESAXUMA1
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →ISP752TFUMA1
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →BTS51202EKAXUMA1
✅ Drop-In✓ In Stock
$1.68 / Unit
View Datasheet →BTG7003A1EPWXUMA2
✅ Drop-In✓ In Stock
$2.2 / Unit
View Datasheet →BTS3028SDRATMA1
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →BTG70902EPLXUMA1 Maximum Ratings & Electrical Characteristics
| Product Family | PROFET+2 12V |
| Function | Smart High-Side Power Switch |
| Number of Channels | 1 |
| Input-to-Output Ratio | 1:1 |
| Output Configuration | N-Channel High-Side |
| Continuous Load Current | 2 A |
| Nominal Operating Voltage | 12 V (automotive bus) |
| Current Limit | Fixed (value not specified in retrieved data) |
| Protection Features | Overcurrent, Short-Circuit, Over-Temperature (latch), Over-Voltage, Under-Voltage Lockout, Reverse Battery |
| Diagnostic Output | DEN pin (current sense / fault flag) |
| Enable Input | IN pin (active-high) |
| Channel Select | DSEL pin |
| Slew Rate Control | Yes (internal, for EMI) |
| Package | PG-TSDSO-14 (exposed pad) |
| Operating Junction Temperature | -40 C to +150 C |
| Automotive Qualification | AEC-Q100 (PROFET+2 family targeted at automotive) |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
BTG70902EPLXUMA1 Pin Configuration
| Pin 1 | OUT — Power output to load (high-side) |
| Pin 2 | Vbb — Battery supply input (12 V nominal) |
| Pin 3 | GND — Ground reference |
| Pin 4 | IN — Logic enable input (active-high) |
| Pin 5 | DEN — Diagnostic / current sense output |
| Pin 6 | DSEL — Channel select for diagnostic multiplexing |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | NC — Not connected (per datasheet) |
| 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 | GND/Tab — Exposed thermal pad - connect to GND for thermal dissipation |
Typical Applications
BTG70902EPLXUMA1 is suitable for 6 applications: Automotive Interior LED Lighting, Body Control Module (BCM) Load Drivers, Seat Heater and Mirror Heater Driver, Solenoid and Relay Replacement, Resistive Sensor and Reference Ground Switching, Industrial 24 V Load Switching (De-rated).
Automotive Interior LED Lighting
The BTG70902EPLXUMA1's 2 A continuous rating and 1:1 input-to-output high-side configuration fit automotive interior LED modules where each lamp string draws 0.5-1.5 A from a 12 V bus. Its internal slew-rate control limits di/dt during turn-on, suppressing EMI that would otherwise require external snubbers, and the DEN diagnostic pin reports open-load and short-to-GND faults back to the BCM for ISO 26262-compliant fault monitoring. Compared with discrete MOSFET plus relay designs, the BTG70902EPLXUMA1 integrates reverse-battery and over-temperature latch protection, eliminating the inline fuse and simplifying the wiring harness.
Recommended
Body Control Module (BCM) Load Drivers
Body control modules aggregate resistive and small inductive loads such as door locks, mirror heaters, and seat adjustment motors. The BTG70902EPLXUMA1 delivers 2 A continuous per channel with fixed current limiting that protects the harness from downstream shorts, while the over-temperature latch prevents thermal runaway if a load sticks. The exposed pad of the PG-TSDSO-14 package dissipates up to several watts on standard 2 oz copper, removing the need for external heatsinks in compact BCM PCBs.
Recommended
Seat Heater and Mirror Heater Driver
Resistive heating elements for seats and side mirrors draw 1-2 A per zone and require continuous PWM or on/off control from a 12 V rail. The BTG70902EPLXUMA1's slew-rate-controlled turn-on reduces inrush and EMI, while its over-temperature latch protects the heater pad from runaway in case of a fault. The DEN diagnostic output gives the ECU a real-time load-current feedback signal for closed-loop temperature regulation, replacing the thermistor-only design used in lower-end systems.
Recommended
Solenoid and Relay Replacement
The BTG70902EPLXUMA1 directly replaces electromechanical relays in 12 V automotive subsystems, providing silent, bounce-free switching with built-in diagnostics. Its reverse-battery protection eliminates the external diode typically required across relay coils, and the 2 A continuous rating covers most low-power solenoids (transmission shift valves, EV charging port locks). The over-temperature latch and under-voltage lockout features ensure fail-safe behavior during cranking transients when bus voltage dips below 6 V.
Recommended
Resistive Sensor and Reference Ground Switching
Diagnostic ECUs often switch reference grounds or bias resistors during end-of-line testing and in-field fault isolation. The BTG70902EPLXUMA1's low on-state resistance (in the milliohm range) and accurate current sense via DEN support precise resistance measurement without the voltage drop of electromechanical relays. Its 12 V operation aligns with automotive sensor supplies, and the AEC-Q100 qualification allows deployment in safety-relevant subsystems.
Recommended
Industrial 24 V Load Switching (De-rated)
Although the BTG70902EPLXUMA1 is qualified for 12 V automotive, its PG-TSDSO-14 package and protection set also suit industrial 24 V systems operated at de-rated current (typically 1 A continuous). The fixed current limit and over-temperature latch protect PLC digital outputs, the slew-rate control limits EMI on long cable runs, and the DEN diagnostic gives the PLC a load-health signal. Engineers should validate absolute voltage ratings against the Infineon datasheet before deploying above the automotive nominal.
Recommended
Recommended Products Summary
Engineering reference data for BTG70902EPLXUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS710336ESAXUMA1 | ISP752TFUMA1 | BTS51202EKAXUMA1 | BTG7003A1EPWXUMA2 | BTS3028SDRATMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-TSDSO-14 | PG-TSDSO-14 - same | PG-TSDSO-14 - same | PG-TSDSO-14 (family) - same | PG-TSDSO-14 - same | PG-TSDSO-14 - same |
| Diagnostic Interface | DEN current sense + DSEL | DEN/IS sense | Status flag only | Current sense analog | DEN current sense | Status flag |
| Over-Temperature Behavior | Latch (cleared via DEN pulse) | Latch | Latch | Latch | Latch | Latch |
| Reverse Battery Protection | Yes (integrated) | Yes | Yes | Yes | Yes | Yes |
| Operating Junction Temperature | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C |
| Automotive Qualification | AEC-Q100 (PROFET+2 family) | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
Key Differentiators
- Single-channel 2 A rating in compact PG-TSDSO-14 with full PROFET+2 diagnostic set (vs BTS51202EKAXUMA1)
- Analog DEN current-sense diagnostic vs status-flag only (vs ISP752TFUMA1)
- Latest PROFET+2 12V silicon revision with fixed current limit (vs BTG7003A1EPWXUMA2)
Design Notes
Estimated: at 2 A continuous load with Ron in the tens of milliohms, conduction loss is on the order of 0.1-0.2 W. Add switching losses from the internal slew-rate-controlled charge pump at 1 kHz PWM, and total dissipation stays well under 1 W for most 12 V loads. The PG-TSDSO-14 exposed pad should be soldered to at least 100 mm^2 of 2 oz copper on a 4-layer PCB to keep junction temperature rise below 30 K above ambient at full load.
Place a 100 nF ceramic decoupling capacitor as close as possible to the Vbb pin, and a reverse-polarity-protected bulk cap (>= 10 uF) on the supply rail. The exposed thermal pad must be soldered to a continuous copper pour that is stitched with thermal vias (>= 4 vias, 0.3 mm diameter) to inner-layer ground planes for heat extraction. Keep the DEN trace short and routed away from the OUT and Vbb switching nodes to avoid coupling into the diagnostic amplifier.
Do not leave the IN pin floating; tie it to logic high or low through a 10 kohm resistor. Driving DEN low for the specified pulse length clears the over-temperature latch only when IN is held in the correct state (see Infineon datasheet chapter 7.3). The BTG70902EPLXUMA1 is designed for 12 V automotive buses; operation above the absolute maximum Vbb may permanently damage the device. For 24 V industrial systems, de-rate current and validate voltage transients against the datasheet.
Route the high-current OUT trace with wide copper (>= 1 mm per ampere) and minimize loop area between Vbb, the IC, and the output capacitor to reduce parasitic inductance. Place the diagnostic current-sense resistor (if used externally with DEN) on a Kelvin-connected ground reference to preserve accuracy. Keep analog ground for DEN separate from the noisy power ground of OUT, joining them only at the IC GND pin.
Compliance Information
PROFET+2 12V family is AEC-Q100 qualified. RoHS compliant per Infineon product page and DigiKey listing. Halogen-free per Infineon green-product declaration.
