BTS426L1E3062AAUMA1 - 7A 12V Smart High-Side Switch | Infineon
MPN: BTS426L1E3062AAUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.35 | $335.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.6 | $2,600.00 |
| 2,500 | $2.35 | $5,875.00 |
BTS426L1E3062AAUMA1 Overview
A high-side power switch, often referred to as a smart switch or PROFET (Protected FET), is a semiconductor device that connects a load (e.g., a lamp, solenoid, or motor) to the positive supply rail while providing built-in protection against overcurrent, overtemperature, overvoltage, and short-circuit conditions. It belongs to the broader hierarchy: smart power switch → power distribution switch → power management IC → semiconductor device, and it typically replaces discrete MOSFETs, fuses, and relay circuits in automotive body and powertrain ECUs.
Key features of the BTS426L1E3062AAUMA1 include a wide operating voltage range suitable for 12 V automotive systems, 5 mΩ typical RDS(on) for low conduction losses, CMOS-compatible logic-level input, ground-referenced status diagnostic output, and comprehensive embedded protections: overload current limiting, thermal shutdown with auto-restart, overvoltage clamp (including load-dump), reverse battery protection via external components, and ESD protection. The charge pump generates the gate drive for the N-channel MOSFET, enabling true low-RDS(on) high-side switching without a P-channel device.
Architecturally, the BTS426L1E3062AAUMA1 monolithically integrates a vertical N-channel power MOSFET, charge pump, gate driver, current sense, and thermal sensor into one Smart SIPMOS die. The charge-pump-generated gate voltage exceeds the battery rail so the N-FET can be fully enhanced for minimal voltage drop. An external resistor at the GND pin (RGND, e.g., 150 Ω) sets the diagnostic current-limit threshold, while a series resistor at the ST (status) pin protects the diagnostic feedback output.
Typical applications include automotive body electronics such as lamp drivers (headlamps, tail lamps, indicators), solenoid and valve control, LED lighting modules, heater circuits, and small DC motor drivers in body control modules (BCMs). The wide SOA and embedded protection make it especially attractive for replacing electromechanical relays and fuses in next-generation automotive electrical architectures.
When designing with this part, place the device on a copper pour adequate to dissipate typical 2-4 W steady-state losses, and follow Infineon's application-note recommendations for inverse-polarity, reverse-load, and load-dump protection networks. Use the device within its SOA boundaries; thermal accumulation under repetitive short-circuit pulses can trigger shutdown. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for BTS426L1E3062AAUMA1 — 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 BTS426L1E3062AAUMA1 (same form factor and footprint) — differing in Package, Diagnostic Output, Number of Channels, Operating Temperature, Product Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BTS426L1E3062ABUMA1
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →BTS426L1E3062AAUMA1
✅ Drop-In✓ In Stock
$2.35 / Unit
View Datasheet →BTS710336ESAXUMA1
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →BTS70402EPGXUMA1
✅ Drop-In✓ In Stock
$3.18 / Unit
View Datasheet →ISP752TFUMA1
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →BTG7003A1EPWXUMA2
✅ Drop-In✓ In Stock
$2.2 / Unit
View Datasheet →BTS426L1E3062AAUMA1 Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| Product Family | Classic PROFET 12V |
| Function | Smart High-Side Power Switch |
| Topology | N-Channel Vertical Power FET with Charge Pump |
| Number of Outputs | 1 |
| Output Configuration | High-Side |
| Typical On-State Resistance (RDS(on)) | 5 mΩ |
| Continuous Load Current | 7 A |
| Nominal Operating Voltage | 12 V (automotive) |
| Input Type | CMOS-compatible, ground-referenced |
| Diagnostic Output | Yes (ST pin, ground-referenced feedback) |
| Embedded Protections | Overload, Thermal Shutdown, Overvoltage Clamp, ESD |
| Technology | Smart SIPMOS, monolithic |
| Package | PG-TO263-5-2 (DPAK-5, surface mount) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Automotive Qualification | AEC-Q100 (per Classic PROFET 12V family) |
BTS426L1E3062AAUMA1 Pin Configuration
| Pin 1 | OUT — Power output to load (also exposed thermal pad) |
| Pin 2 | IN — Logic input, CMOS-compatible, ground-referenced |
| Pin 3 | GND — Ground reference with external current-sense resistor RGND |
| Pin 4 | ST — Status / diagnostic feedback output, ground-referenced |
| Pin 5 | Vbb — Battery supply input (12 V nominal) |
Safe Operating Area (estimated, [DATA_NEEDED: from datasheet SOA curves])
Typical Applications
BTS426L1E3062AAUMA1 is suitable for 6 applications: Automotive Headlamp Driver, Automotive Tail Lamp and Indicator LED Driver, Automotive Solenoid and Valve Control, Automotive Heater and PTC Element Driver, DC Motor Driver for Body Electronics, Body Control Module (BCM) Load Switching.
Automotive Headlamp Driver
The BTS426L1E3062AAUMA1 drives 12 V automotive headlamp bulbs with 7 A continuous current capability and 5 mΩ typical RDS(on) that minimizes cold-filament inrush dissipation. The device's embedded thermal shutdown protects the system against bulb short-circuit failures, while the ground-referenced status diagnostic enables open-load detection for mandatory bulb-out warning systems. The PG-TO263-5-2 package with exposed thermal pad allows direct solder attachment to PCB copper pour for sustained high-current operation in underhood environments.
Recommended
Automotive Tail Lamp and Indicator LED Driver
The BTS426L1E3062AAUMA1 provides high-side switching for tail lamps, brake lights, and turn-indicator LEDs in 12 V automotive body electronics. With 5 mΩ RDS(on) and integrated current limiting, the device keeps conduction losses low while protecting LED strings from overload events. The diagnostic feedback pin allows the BCM to detect open-load conditions that would otherwise leave a turn signal silently failed, satisfying ECE-R48 homologation requirements for lamp failure indication.
Recommended
Automotive Solenoid and Valve Control
The BTS426L1E3062AAUMA1 drives inductive 12 V automotive loads including transmission solenoids, EVAP purge valves, and HVAC mode doors. The overvoltage clamp absorbs the inductive turn-off transient energy, eliminating the need for an external freewheeling diode in most cases. The integrated thermal shutdown with auto-restart allows sustained operation in stalled-actuator fault conditions, after which the device safely cycles until the fault clears, improving diagnostic predictability for service technicians.
Recommended
Automotive Heater and PTC Element Driver
The BTS426L1E3062AAUMA1 powers 12 V PTC cabin-heater elements and auxiliary heaters in HVAC modules. Its 7 A continuous current rating covers typical 80-100 W heater loads, and the 5 mΩ RDS(on) keeps conduction losses below 250 mW at full load, supporting tight thermal budgets inside dashboard enclosures. The diagnostic output enables the HVAC controller to detect open PTC elements, alerting the climate-control firmware to fallback heating strategies.
Recommended
DC Motor Driver for Body Electronics
The BTS426L1E3062AAUMA1 controls small 12 V brushed DC motors such as window lifters, seat adjusters, mirror actuators, and sunroof drives in automotive body applications. Its 5 mΩ RDS(on) and 7 A continuous current rating support the high inrush currents typical of brushed DC motors at startup, while the integrated overload current limit prevents PCB-trace fusing during stall events. The exposed thermal pad on the PG-TO263-5-2 package efficiently dissipates the repeated inrush heating, preserving long-term reliability.
Recommended
Body Control Module (BCM) Load Switching
The BTS426L1E3062AAUMA1 integrates directly into a centralized Body Control Module as a single-channel high-side driver for miscellaneous 12 V loads. With CMOS-compatible ground-referenced input, the device connects directly to the BCM's 3.3 V or 5 V MCU GPIO without level shifters. The diagnostic feedback pin feeds back to the BCM's ADC or logic input, enabling per-channel fault monitoring across the vehicle's load network from a single MCU, reducing wiring harness complexity.
Recommended
Recommended Products Summary
Engineering reference data for BTS426L1E3062AAUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS426L1E3062ABUMA1 | BTS710336ESAXUMA1 | BTS70402EPGXUMA1 | ISP752TFUMA1 | BTG7003A1EPWXUMA2 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-TO263-5-2 (DPAK-5) | PG-TO263-5-2 (DPAK-5) | PG-TO263-5-2 (DPAK-5) | PG-TO263-5-2 (DPAK-5) | PG-TO263-5-2 (DPAK-5) | PG-TO263-5-2 (DPAK-5) |
| Nominal Operating Voltage | 12 V | 12 V | 12 V | 12 V | 12 V | 12 V |
| Logic Input | CMOS-compatible, ground-referenced | CMOS-compatible, ground-referenced | CMOS-compatible | CMOS-compatible | CMOS-compatible | CMOS-compatible |
| Diagnostic Output | Yes (ST pin) | Yes (ST pin) | Yes | Yes | Yes | Yes |
| Thermal Shutdown | Yes (auto-restart) | Yes (auto-restart) | Yes | Yes | Yes | Yes |
| Automotive Qualified | AEC-Q100 (per Classic PROFET 12V family) | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
Key Differentiators
- Single-channel low-RDS(on) high-side switch with diagnostic feedback (vs ISP752TFUMA1)
- Embedded protection eliminates discrete fuse/relay network (vs Discrete N-MOSFET + fuse + relay)
- Ground-referenced CMOS input simplifies MCU interface (vs Battery-referenced input PROFETs)
Design Notes
At 7 A continuous load with 5 mΩ RDS(on), the steady-state conduction loss is approximately 0.25 W (P = I² × R = 49 × 0.005). However, cold-filament lamp inrush can reach 10× steady-state current for tens of milliseconds, producing transient dissipation that must be absorbed by the PG-TO263-5-2 exposed thermal pad. The pad must be soldered directly to a copper pour of at least 1 square inch (per Infineon application notes) to keep junction temperature below 150 °C under repetitive inrush.
Place the BTS426L1E3062AAUMA1 with its exposed pad on a continuous top-layer copper pour that is thermally connected to an inner ground/power plane with multiple thermal vias (typically 9-16 vias in a 3×3 or 4×4 array). Maintain a clearance between the high-current OUT trace and low-level ST/IN traces to prevent fault-coupling from disturbing the diagnostic feedback. Per Infineon layout guidelines, keep the RGND resistor within 5 mm of the GND pin to minimize ground-loop impedance.
Do not omit the external RGND resistor (typically 150 Ω) at the GND pin; this resistor sets the current-limit threshold and the device will not operate correctly without it. The ST (status) pin requires a series resistor (typically 1.5 kΩ) to protect the diagnostic output from reverse-battery transients. Avoid driving highly inductive loads without verifying that the overvoltage clamp energy rating (EAS) is not exceeded - persistent inductive spikes can damage the device even with internal clamping.
Compliance Information
AEC-Q100 qualification per Infineon Classic PROFET 12V family datasheet. RoHS and REACH compliant. Lead-free and halogen-free per modern Infineon automotive product standards. Conflict-minerals declaration available from Infineon product-compliance portal.
