BTS72004EPAXUMA1 - 4-Ch 1A Smart High-Side Switch | Infineon
MPN: BTS72004EPAXUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.16 | $1.16 |
| 10 | $1.05 | $10.50 |
| 100 | $0.92 | $92.00 |
| 500 | $0.81 | $405.00 |
| 1,000 | $0.72 | $720.00 |
| 2,500 | $0.65 | $1,625.00 |
BTS72004EPAXUMA1 Overview
A smart high-side switch is a type of power distribution switch (load driver) that sits between the battery/rail and the load. When the controlling MCU asserts the channel input, the internal MOSFET turns on and connects the load to the supply. PROFET+ 12V devices add digital diagnostics, current limiting, and protection - in the system hierarchy they sit between a discrete MOSFET (lowest integration) and a fully-integrated multi-channel PMIC (highest integration), giving automotive ECUs a compact, fault-aware alternative to discrete relay/fuse solutions.
Key features include active-high inputs for each channel, integrated overcurrent protection (OCP), overvoltage clamp, undervoltage protection (UVP), thermal shutdown, and proportional load-current feedback through the IS pin for diagnosis. The exposed pad of the TSDSO-14 package reduces thermal resistance, supporting continuous 1 A per channel operation at ambient temperatures up to 150 C junction. AEC-Q100 qualification makes it suitable for under-the-hood and body-control modules.
Architecturally, each channel is built on Infineon's vertical N-channel DMOS process with charge-pump gate drive, allowing true low-Rdson switching from logic-level inputs. The device is designed to survive the harsh automotive 12 V environment, including load-dump transients up to 35 V, jump-start conditions, and reverse-battery events with external protection. Diagnostic current sense output (IS) provides a ground-referenced analog current mirror output proportional to each active channel's load current.
Typical applications include automotive body control modules (driving lamps, LEDs, relays), power seat and mirror modules, HVAC flap motors, and decentralized front/rear lighting nodes. The four channels are commonly used in parallel with PWM for dimming or in independent configuration for mixed-load systems. Compared with discrete MOSFETs plus fuses, the BTS72004EPAXUMA1 reduces PCB area and adds self-protection that simplifies ECU design.
When designing with this part, ensure adequate copper area on the exposed pad to keep junction temperature within limits; at 1 A per channel and full 4-channel operation, total power dissipation can approach 1 W. The IS pin requires a reference resistor and external ADC; choose sense resistor value to match the MCU ADC range for maximum diagnostic resolution. Use TVS diodes on Vbb for load-dump protection beyond the device's internal clamp.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for BTS72004EPAXUMA1 — 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 BTS72004EPAXUMA1 (same form factor and footprint) — differing in Package, Number of Channels, Diagnostic Output, Operating Temperature, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BTS710336ESAXUMA1
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →BTS51202EKAXUMA1
✅ Drop-In✓ In Stock
$1.68 / Unit
View Datasheet →BTS70402EPGXUMA1
✅ Drop-In✓ In Stock
$3.18 / Unit
View Datasheet →BTG7003A1EPWXUMA2
✅ Drop-In✓ In Stock
$2.2 / Unit
View Datasheet →BTS72004EPAXUMA1 Maximum Ratings & Electrical Characteristics
| Product Family | PROFET+ 12V |
| Switch Type | Smart High-Side Switch |
| Number of Channels | 4 |
| Topology | 1:1 N-Channel High-Side |
| Per-Channel Output Current (nominal) | 1 A |
| On-State Resistance (Rdson) per channel | 66.5 mOhm |
| Operating Supply Voltage (Vbb) | 6 V to 18 V |
| Input Logic Level | Active High |
| Operating Temperature Range | -40C to +150C |
| Protection Features | Overcurrent (OCP), Overvoltage, Undervoltage (UVP), Thermal Shutdown |
| Diagnostic Output | Current Sense (IS pin) |
| Package | PG-TSDSO-14 (TSSOP-14-EP, 150 mil) |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| RoHS Status | Compliant |
BTS72004EPAXUMA1 Pin Configuration
| Pin 1 | OUT1 — Channel 1 high-side output (1 A) |
| Pin 2 | IN1 — Channel 1 logic input (active-high) |
| Pin 3 | OUT2 — Channel 2 high-side output (1 A) |
| Pin 4 | IN2 — Channel 2 logic input (active-high) |
| Pin 5 | OUT3 — Channel 3 high-side output (1 A) |
| Pin 6 | IN3 — Channel 3 logic input (active-high) |
| Pin 7 | OUT4 — Channel 4 high-side output (1 A) |
| Pin 8 | IN4 — Channel 4 logic input (active-high) |
| Pin 9 | IS — Current sense diagnostic output (analog current mirror) |
| Pin 10 | Vbb — Battery supply input (6 V to 18 V) |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | GND — Ground reference |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | EP — Exposed pad - thermal pad, must be soldered to PCB copper for heatsinking |
Typical Applications
BTS72004EPAXUMA1 is suitable for 6 applications: Automotive Body Control Module (BCM) Loads, Automotive LED Rear Lamp Modules, HVAC Flap and Blower Motor Drivers, Power Seat and Power Mirror Modules, Decentralized Front/Rear Lighting Nodes, Industrial 24V/12V Load Switching.
Automotive Body Control Module (BCM) Loads
The BTS72004EPAXUMA1 is engineered for automotive body control modules that drive multiple 12 V resistive or inductive loads such as interior lamps, mirror heaters, and small motors. Each of its 4 channels can deliver 1 A continuously, and the exposed pad of the PG-TSDSO-14 package provides low thermal resistance (around 30 C/W with proper copper), which keeps junction temperature within the AEC-Q100 -40C to +150C window even with all four channels active. The integrated OCP and thermal shutdown protect against wiring harness shorts that are common in body harnesses. Designers wire each channel directly to its load, with Vbb fed from a protected 12 V rail and the inputs driven from the BCM MCU GPIO. Compared to discrete MOSFETs plus fuses, the BTS72004EPAXUMA1 reduces PCB area by roughly 60 percent and eliminates the need for serviceable fuses in the body harness.
Recommended
Automotive LED Rear Lamp Modules
Modern automotive rear lamps use multiple LED strings for tail, brake, indicator, and reverse functions, each requiring PWM dimming and fault detection. The BTS72004EPAXUMA1 provides 4 independent high-side outputs that can drive LED strings at 1 A continuous per channel, with PWM frequencies up to several hundred Hz for dimming and animation. The IS pin delivers an analog current-mirror output proportional to each active channel, enabling the lamp ECU to detect open-LED, short-LED, and partial-failure conditions required by global automotive lighting regulations (ECE R7, R48). With 66.5 mOhm Rdson per channel, conduction losses are minimal at typical 200-500 mA LED currents. The exposed pad keeps the junction cool even when 4 channels are active simultaneously in the lamp housing ambient.
Recommended
HVAC Flap and Blower Motor Drivers
Automotive HVAC modules use multiple small DC motors for mode flaps, recirculation doors, and small blowers - typically 4-6 motors at 200-800 mA each. The BTS72004EPAXUMA1 is well matched because each channel sources up to 1 A, comfortably covering flap-motor inrush. Its integrated reverse-battery and load-dump robustness is essential for under-dash modules exposed to transients on the 12 V bus. The current-sense IS pin supports stall detection: if a flap motor stalls, the IS current rises sharply and the ECU can flag a fault instead of relying on software stall-watchdog timing. The compact TSDSO-14 footprint allows the switch to be placed directly on the HVAC PCB near the motor connectors, minimizing harness length.
Recommended
Power Seat and Power Mirror Modules
Power seat and mirror modules require driving multiple small 12 V motors for adjustment axes - typically 4-6 motors per seat at 0.5-1 A each. The BTS72004EPAXUMA1's 4-channel architecture matches this requirement precisely: one channel per motor with active-high control from the seat/mirror ECU. The integrated OCP protects against motor stall or wiring shorts, while the thermal-shutdown protects against continuous stalled-motor current that exceeds the 1 A rating. The current-sense IS pin enables position feedback (via motor current signature) for soft-stop detection. Designers also benefit from the AEC-Q100 qualification and -40C to +150C operating range, which cover the cabin temperature envelope.
Recommended
Decentralized Front/Rear Lighting Nodes
Newer automotive E/E architectures replace central body controllers with decentralized lighting nodes (corner modules, rear light modules) connected via CAN or LIN. Each node drives 2-8 LED strings or lamps. The BTS72004EPAXUMA1 fits a typical 4-channel node: DRL, position lamp, indicator, and reverse, each at 1 A maximum. Combined with a small LIN SBC such as the TLE92633BQXXUMA2, the node becomes a complete intelligent lamp driver. The exposed pad supports convection cooling inside a sealed lamp housing where ambient can reach 85-105C. The IS diagnostic pin enables LED-open detection required for photometric compliance.
Recommended
Industrial 24V/12V Load Switching
Although optimized for automotive 12 V, the BTS72004EPAXUMA1 is also used in industrial 24 V systems that step down to 12 V rails for sensors, small actuators, and relays. Its 6-18 V supply window covers 12 V industrial buses (12 V +/- 10 percent nominal). Industrial PLCs and remote I/O modules benefit from the 4-channel integration, replacing 4 discrete SSRs or FET switches with one IC. Integrated protection (OCP, OVP, UVP, thermal shutdown) increases system reliability in harsh factory environments with transients from inductive load switching. The PG-TSDSO-14 package is suitable for both hand-soldered prototypes and high-volume SMT production.
Recommended
Recommended Products Summary
Engineering reference data for BTS72004EPAXUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS710336ESAXUMA1 | BTS51202EKAXUMA1 | BTS70402EPGXUMA1 | BTG7003A1EPWXUMA2 |
|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TSDSO-14 (TSSOP-14-EP) | PG-TSDSO-14 (TSSOP-14-EP) - same | PG-TSDSO-14 (TSSOP-14-EP) - same | PG-TSDSO-14 (TSSOP-14-EP) - same | PG-TSDSO-14 (TSSOP-14-EP) - same |
| Number of Channels | 4 | 3 | 2 | 2 | 1 |
| Operating Voltage | 6 V to 18 V | 6 V to 18 V (PROFET+ 12V family) | 6 V to 18 V (PROFET+ 12V family) | 6 V to 18 V (PROFET+ 12V family) | 6 V to 18 V (PROFET+ 12V family) |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +150C | -40C to +150C | -40C to +150C | -40C to +150C | -40C to +150C |
Key Differentiators
- Highest channel count in PROFET+ 12V TSDSO-14 family (vs BTS710336ESAXUMA1)
- More channels than 2-channel alternatives (vs BTS51202EKAXUMA1 / BTS70402EPGXUMA1)
- Diagnostic current sense on every channel (vs Discrete MOSFET solutions)
Design Notes
Estimated: with all 4 channels at 1 A and 66.5 mOhm Rdson per channel, total conduction loss is approximately 4 x 0.0665 W = 0.266 W. In PG-TSDSO-14 with 1 sq inch of top-side copper on the exposed pad, junction-to-ambient thermal resistance is approximately 35 C/W, so the temperature rise is roughly 9 C above ambient. Add headroom for OCP trip events and transient peaks. Use maximum copper area on the exposed pad and multiple thermal vias to inner/outer copper planes for best performance.
Do not float the IS pin - even unused, it should be tied to a defined voltage through a resistor, otherwise diagnostic current can flow unpredictably. The IS pin requires an external reference resistor to ground (typically 1 kOhm or less) to convert sense current to a measurable voltage. The exposed pad MUST be soldered to PCB copper; dry-solder or no-connect EP will cause thermal runaway under load and OCP misbehavior.
Place a 100 nF ceramic decoupling capacitor as close as possible to the Vbb pin (pin 10) to suppress high-frequency noise. Add a 10-47 uF bulk capacitor on Vbb near the connector to handle load-dump energy. Route IN1-IN4 traces away from inductive load wiring to prevent cross-coupling. Keep the IS trace short and guarded if the application requires high-accuracy current sense at low currents.
The exposed pad requires thermal vias (typically 9-16 vias, 0.3 mm drill, 0.6 mm pad) connecting to inner copper planes for heat spreading. Place the BTS72004EPAXUMA1 close to the load connectors to minimize wire harness impedance and improve OCP response. Provide a wide Vbb trace (at least 1 mm width) to avoid voltage drops during simultaneous 4-channel switching. Ground the GND pin with a short, low-impedance trace to the system ground plane.
Compliance Information
AEC-Q100 qualified per Infineon product page. RoHS and REACH compliant. Halogen-free status not explicitly listed in provided data - set to unknown.
