BTS500101TAEATMA1 - 40A Smart High-Side Switch | Infineon | 12V Loads
MPN: BTS500101TAEATMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.05 | $40.50 |
| 100 | $3.42 | $342.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.58 | $2,580.00 |
BTS500101TAEATMA1 Overview
A smart high-side switch (also called a high-side power switch or intelligent power switch, IPS) is a semiconductor device that connects a load to the positive supply rail and includes on-state MOSFET conduction, gate drive charge pump, protection circuitry (overcurrent, overtemperature, short-to-ground/battery, overvoltage), and load-current feedback for diagnostics. Within the broader system hierarchy, a high-side switch sits between a discrete power MOSFET and a fully integrated motor/relay driver: it is more capable than a bare MOSFET but more load-focused than a half-bridge gate driver. Its job is to make a load "controllable" by a low-power logic signal while protecting the wiring harness and the MCU from fault events.
Differentiating features of the BTS500101TAEATMA1 include an extremely low 1.0 mΩ R_DS(on) that minimizes conduction losses and thermal rise, an integrated charge pump that drives the N-channel MOSFET gate from the logic supply, built-in load-current sense output for fault detection and load monitoring, and AEC-Q100 qualification for automotive deployment. The PG-TO-263-7-10 (D2PAK-7) package with exposed thermal tab provides a low thermal resistance path, which is essential at 40A continuous current where I²R losses still produce significant heat.
Architecturally, the device combines a vertical N-channel DMOS output stage, a charge pump that generates the gate boost voltage above Vbb, a sense-FET that mirrors load current into an IS pin, and a protection state machine that latches off on faults. Compared with discrete MOSFET + shunt-resistor solutions, this monolithic integration reduces PCB area, eliminates shunt-resistor tolerance errors, and provides much faster short-circuit response (typically tens of microseconds vs. milliseconds for an MCU ADC-driven shutdown).
Typical applications include automotive glow-plug and PTC heater drivers, 12V DC motor control (HVAC blowers, fuel pumps, water pumps), resistive and inductive load switching (solenoids, valves), body electronics (seat heaters, mirror heaters), and industrial 24V/12V load management. The device is particularly suited to systems where load-health monitoring and fault reporting back to an ECU are required.
When designing with the BTS500101TAEATMA1, ensure the exposed pad is soldered to a sufficient copper pour (typically 6 cm² or more on a 4-layer FR-4 board) to keep junction temperature within the 150°C limit at 40A. Place a 100 nF ceramic bypass close to the Vbb pin to suppress supply transients, and follow Infineon's recommended TVS protection on Vbb if the system is exposed to load-dump events per ISO 7637-2.
This page synthesizes distributor pricing, qualified drop-in alternatives, and application-specific design notes not found in the manufacturer datasheet alone, giving engineers a faster path to a working BOM.
Drop-in alternatives for BTS500101TAEATMA1 — 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 BTS500101TAEATMA1 (same form factor and footprint) — differing in Mounting Type, Product Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BTS500101TADATMA1
✅ Drop-In📋 Reference alternative (not in catalog)
BTS50010-1EUA
✅ Drop-In📋 Reference alternative (not in catalog)
BTS500151EUAATMA1
✅ Drop-In📋 Reference alternative (not in catalog)
BTS500801EUMATMA1
✅ Drop-In📋 Reference alternative (not in catalog)
ISP752TFUMA1
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →BTS500101TAEATMA1 Maximum Ratings & Electrical Characteristics
| Product Type | Smart High-Side Power Switch (N-channel, 1:1) |
| Topology | High-side switch with charge pump |
| On-State Resistance R_DS(on) (typ) | 1.0 mΩ |
| Maximum Continuous Load Current | 40 A DC (per datasheet family) |
| Rated Load Current (per DigiKey listing) | 48 A |
| Peak Load Current | 250 A |
| Nominal Supply Voltage Vbb | 12 V (automotive) |
| Operating Voltage Range | 6 V to 18 V (per family) |
| Logic Input Compatibility | 3.3 V / 5 V CMOS/TTL |
| Current Sense Output | Yes (IS pin, analog current mirror) |
| Protection Features | Overcurrent, Overtemperature, Short-to-GND, Short-to-Battery, Overvoltage |
| Diagnostic Feedback | Load current sense + fault flag |
| Package | PG-TO-263-7-10 (D2PAK-7) |
| Mounting Type | Surface Mount (exposed thermal pad) |
| Operating Temperature Range | -40 °C to +150 °C (junction) |
| Automotive Qualification | AEC-Q100 (per Infineon family datasheet) |
| RoHS Status | Compliant |
BTS500101TAEATMA1 pg-to-263-7-10 (d2pak-7) Pin Configuration Guide
Pin configuration for BTS500101TAEATMA1 (pg-to-263-7-10 (d2pak-7) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for BTS500101TAEATMA1.
Refer to the datasheet for full pin configuration.
Typical Applications
BTS500101TAEATMA1 is suitable for 6 applications: Automotive Glow-Plug Driver, HVAC Blower Motor Control, Fuel Pump and Water Pump Driver, Body Electronics: Seat Heaters and Mirror Heaters, Industrial 24V Solenoid and Valve Driver, Resistive Load Switching for Power Distribution.
Automotive Glow-Plug Driver
The BTS500101TAEATMA1's 250A peak surge rating and 1.0 mΩ R_DS(on) make it ideal for driving diesel-engine glow plugs that demand 80–150A in-rush followed by 20–40A steady-state current in 12V vehicle systems. The integrated charge pump sustains gate drive during the entire cold-start sequence (often 10–30 seconds), while the embedded short-to-ground and overtemperature protections prevent catastrophic failure if a plug fails short or the harness chafes. Placed on the high side of each glow plug, the device replaces a discrete MOSFET + relay + shunt + MCU ADC chain, reducing BOM count by ~6 components per plug. AEC-Q100 qualification supports deployment in passenger-car and commercial-vehicle ECUs operating from −40 °C to +125 °C ambient under the hood.
Recommended
HVAC Blower Motor Control
In automotive HVAC systems, the BTS500101TAEATMA1 controls the 12V brushless or brushed blower motor that drives cabin airflow. Its 40A continuous rating comfortably covers the 15–30A typical operating envelope of mid-size vehicle blowers, and its current-sense (IS) output lets the ECU implement closed-loop stall detection without an external shunt resistor. Compared with a relay + thermal fuse solution, the device provides soft-start, PWM-driven speed control, and accurate fault reporting — features required by modern climate-control modules. The D2PAK-7 exposed tab dissipates ~1.5W at typical operating points on 2-layer FR-4 with 4 cm² of copper, well within the 150 °C junction limit.
Recommended
Fuel Pump and Water Pump Driver
Fuel pumps and auxiliary water pumps in gasoline and diesel vehicles draw 8–25A continuous with occasional 50–80A transients during cold start and clogged-filter events. The BTS500101TAEATMA1's 1.0 mΩ R_DS(on) keeps conduction loss below 0.6W at 25A, and its 250A peak rating absorbs pump-lock transients without nuisance tripping. The integrated short-to-battery detection protects the wiring harness if a connector pin is reversed or chafed, while the IS pin enables load-health monitoring (e.g., detecting a clogged fuel filter by increased steady-state current). Designers typically mount the device near the pump harness connector on the chassis to minimize wire length and EMI loop area.
Recommended
Body Electronics: Seat Heaters and Mirror Heaters
Automotive seat heaters and mirror heaters draw 5–15A per element and require precise temperature regulation plus fault detection. The BTS500101TAEATMA1's current-sense output enables the ECU to implement constant-power regulation without a thermistor on each seat, while its overtemperature protection prevents thermal runaway if a heater element is damaged. The 3.3V/5V-compatible IN pin interfaces directly to the body-control MCU without a level shifter. Multiple BTS500101TAEATMA1 devices can be paralleled (with proper PCB layout) to drive higher-power seat heaters up to 30A, taking advantage of the R_DS(on)'s positive temperature coefficient for natural current sharing.
Recommended
Industrial 24V Solenoid and Valve Driver
In industrial 24V systems, the BTS500101TAEATMA1 drives hydraulic solenoids, pneumatic valves, and latching relays with currents up to 40A continuous. Its 6–18V nominal operating range covers most 12V/24V industrial bus voltages, though for true 24V nominal applications an external TVS clamp on Vbb is recommended to absorb inductive kick-back. The device's integrated diagnostic feedback simplifies PLC fault handling — instead of wiring a separate current sensor for each valve, the PLC reads the IS pin and reports valve health via the fieldbus. The D2PAK-7 package withstands the typical 4 g vibration profile of factory-floor equipment when properly soldered to a vibration-resistant PCB pad stack.
Recommended
Resistive Load Switching for Power Distribution
The BTS500101TAEATMA1 is well-suited to switching resistive loads such as PTC cabin heaters, heated windshield elements, and rear-window defrosters in 12V vehicles. These loads can draw 20–40A steady-state with minimal inrush, and the device's 1.0 mΩ R_DS(on) keeps conduction loss to ~1.6W at 40A, manageable on a 4-layer FR-4 board with 6 cm² of copper. The integrated overtemperature shutdown and short-to-ground protection guard against cracked heater mats or pinched harness wires, while the IS pin enables the BCM to detect heater-element degradation (rising resistance, dropping current) before it fails completely. The exposed-tab D2PAK-7 package is ideal for through-hole-style thermal performance in a SMD form factor.
Recommended
Recommended Products Summary
Engineering reference data for BTS500101TAEATMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS500101TADATMA1 | BTS50010-1EUA | BTS500151EUAATMA1 | BTS500801EUMATMA1 | ISP752TFUMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-TO-263-7-10 (D2PAK-7) | PG-TO-263-7-10 (D2PAK-7) - same | PG-TO-263-7-10 (D2PAK-7) - same | PG-TO-263-7-10 (D2PAK-7) - same | PG-TO-263-7-10 (D2PAK-7) - same | PG-TO-263-7-10 (D2PAK-7) - same |
| Nominal Supply Voltage | 12 V | 12 V | 12 V | 12 V | 12 V | 12 V |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes |
| Logic Input Compatibility | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
| Unit Price (qty 1, indicative) | ~$4.62 | ~$4.40 | ~$5.10 | ~$4.85 | ~$5.95 | ~$1.40 |
Key Differentiators
- Lowest R_DS(on) in the BTS50010-1TAE family for minimum conduction loss at 40A (vs BTS500151EUAATMA1)
- Integrated analog current-sense output eliminates external shunt resistor (vs ISP752TFUMA1)
- Higher continuous current rating than lower-tier ISP752 family member (vs ISP752TFUMA1)
- 250A peak surge capability handles worst-case inrush without nuisance tripping (vs BTS500101TADATMA1)
Design Notes
At 40A continuous load and 1.0 mΩ R_DS(on), the BTS500101TAEATMA1 dissipates approximately 1.6W, which produces ~25 °C junction temperature rise above 25 °C ambient on a 4-layer FR-4 board with 6 cm² of copper pad. Above ~30A continuous, a heatsink is recommended to keep the junction below 125 °C. Estimated: thermal resistance theta_JA ~ 15 °C/W for 6 cm² 2-layer board with exposed pad fully soldered, per typical D2PAK-7 thermal data. Derate to 30A continuous or add a clip-on heatsink for sustained high-temperature operation.
Place a 100 nF X7R ceramic bypass capacitor as close as possible to the Vbb (battery supply) pin to suppress supply transients from load-dump and jump-start events per ISO 7637-2. Add a bulk aluminum-polymer capacitor (≥10 µF) within 1 cm of the Vbb pin for low-frequency decoupling. Use wide copper pours (≥4 mm wide) on the OUT and Vbb traces to minimize parasitic inductance. The exposed thermal tab MUST be soldered to a top-layer copper pad of at least 6 cm² to achieve the rated RthJA; do not use thermal vias alone — the tab requires direct solder contact for heat transfer.
Route the IS (current sense) trace as a differential pair with GND, kept away from switching nodes (Vbb, OUT) to avoid capacitive coupling that distorts the sense signal. Use a 1 kΩ pull-up on the IS pin at the MCU ADC input to convert the current-mirror output to a 0–5V analog voltage. For PWM speed control of motors, place a 100 Ω RC snubber (100 Ω in series with 100 nF) across the OUT pin to damp ringing from the motor's winding inductance, which can otherwise inject voltage spikes into Vbb and trigger false overvoltage faults.
Do not connect the IN pin to a 12V signal directly — the logic input is rated for 3.3V/5V CMOS only; applying 12V will damage the gate-driver ESD structures. If the MCU GPIO cannot source 5V (e.g., 1.8V MCU), add a small level-translator or a discrete MOSFET gate driver. Avoid latching thermal shutdown by ensuring the load current stays within the SOA curve across the full operating temperature range; a clogged fuel filter or seized blower motor can push the device into continuous overcurrent if not properly diagnosed. The device latches off on fault — design the MCU firmware to clear the latch by cycling the IN pin after a 100 ms cooldown.
The BTS500101TAEATMA1's integrated charge pump operates at ~1 MHz and can inject common-mode noise into the Vbb rail. Add a ferrite bead (≥600 Ω at 100 MHz) in series with the Vbb pin between the device and the upstream harness connector to suppress conducted EMI per CISPR 25 automotive EMC limits. For radio-sensitive applications (AM/FM antenna nearby), add a 10 nF Y-capacitor from OUT to chassis ground to shunt common-mode switching noise. Verify EMC compliance with a 3-meter antenna measurement per the vehicle manufacturer's standard.
Compliance Information
RoHS compliant and AEC-Q100 qualified per Infineon BTS50010-1TAE family datasheet. Lead-free matte-tin plating. Halogen-free status not explicitly stated in available web data.
