BTS700121ESPXUMA2 - 31.3A Smart High-Side Power Switch | Infineon
MPN: BTS700121ESPXUMA2 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.97 | $1,485.00 |
| 1,000 | $2.62 | $2,620.00 |
Drop-in alternatives for BTS700121ESPXUMA2 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
BTS700121ESPXUMA1
β Drop-Inπ Reference alternative (not in catalog)
BTS70041EPPXUMA1
β Drop-Inβ In Stock
$1.45 / Unit
View Datasheet βBTS70021EPPXUMA1
β Drop-Inβ In Stock
$1.32 / Unit
View Datasheet βBTS700121ESPXUMA2 Maximum Ratings & Electrical Characteristics
| Function | Power Switch / Driver 1:1 N-Channel |
| Topology | High-Side |
| Continuous Load Current | 31.3 A |
| Family | PROFET (Protected FET) |
| Nominal Supply Voltage | 13.5 V |
| Number of Channels | 1 |
| Package | PG-TSDSO-24-32 (HTSSOP-24 with thermal pad) |
| Number of Terminals | 24 |
| Terminal Pitch | 0.65 mm |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 C to +150 C |
| Max Junction Temperature | 150 C |
| Protection Features | Overload, short-circuit, over-temperature, reverse battery, ground loss |
| Diagnostic Output | Analog current sense (IS pin) |
| Open-Load Detection | Yes (on-state and off-state) |
| RoHS Status | Compliant |
BTS700121ESPXUMA2 Pin Configuration
| Pin 1 | Vbb β Battery supply input (positive rail) |
| Pin 2 | OUT β Load output (high-side switch drain) |
| Pin 3 | GND β Logic ground reference |
| Pin 4 | IN β Logic input (active-high gate drive) |
| Pin 5 | IS β Analog current sense output (proportional to load current) |
| Pin 6 | DEN β Diagnostic enable (active-high) |
| Pin 7 | NC β Not connected (per datasheet) |
| Pin 8 | NC β Not connected (per datasheet) |
| Pin 9 | Vbb β Battery supply input |
| Pin 10 | OUT β Load output |
| Pin 11 | OUT β Load output |
| Pin 12 | OUT β Load output |
| Pin 13 | OUT β Load output |
| Pin 14 | Vbb β Battery supply input |
| Pin 15 | NC β Not connected (per datasheet) |
| Pin 16 | NC β Not connected (per datasheet) |
| Pin 17 | NC β Not connected (per datasheet) |
| Pin 18 | NC β Not connected (per datasheet) |
| Pin 19 | NC β Not connected (per datasheet) |
| Pin 20 | NC β Not connected (per datasheet) |
| Pin 21 | NC β Not connected (per datasheet) |
| Pin 22 | NC β Not connected (per datasheet) |
| Pin 23 | NC β Not connected (per datasheet) |
| Pin 24 | NC β Not connected (per datasheet) |
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
BTS700121ESPXUMA2 is suitable for 6 applications: Automotive Body Control Module Load Driver, Automotive LED Headlamp Driver, Seat Heater and PTC Heater Power Distribution, Industrial 24V Truck Power Switching, HVAC Blower Motor Driver, Door Module Load Switching.
Automotive Body Control Module Load Driver
The BTS700121ESPXUMA2 fits automotive body-control modules (BCMs) because its 31.3 A continuous current rating and 13.5 V nominal supply are matched to body loads such as lighting and PTC heaters. Its integrated short-to-ground, short-to-battery, and over-temperature protection eliminate the need for external fuses in many circuits. The analog current-sense pin streams diagnostic data back to the BCM microcontroller for fault discrimination, while the PG-TSDSO-24-32 thermal pad keeps junction temperature manageable at 150 C.
Recommended
Automotive LED Headlamp Driver
For LED headlamp modules, the BTS700121ESPXUMA2 offers 31.3 A continuous current with low on-state resistance, reducing conduction losses versus mechanical relays. Its analog current-sense output enables accurate LED brightness regulation via closed-loop PWM control from the headlamp ECU. Reverse-battery and load-dump immunity ratings ensure robust operation in harsh 12 V vehicle electrical environments where transient voltages exceed 40 V routinely.
Recommended
Seat Heater and PTC Heater Power Distribution
PTC seat heaters and HVAC auxiliary heaters draw steady currents in the 15-25 A range, where the BTS700121ESPXUMA2's 31.3 A rating provides strong thermal margin. The integrated overload current limit and thermal shutdown prevent fire hazards if the heater element shorts to ground. The IS pin allows the climate-control ECU to detect partial heater failure for early driver warnings, while the PG-TSDSO-24-32 footprint supports automated SMT assembly in seat-module production lines.
Recommended
Industrial 24V Truck Power Switching
Beyond passenger vehicles, the BTS700121ESPXUMA2 fits 24 V commercial-truck and off-road equipment power distribution. Its wide operating voltage range tolerates 24 V truck electrical transients and jump-start events. The PROFET diagnostic feature set detects open-load faults in trailer lighting and ABS modules, reducing warranty returns. The exposed thermal pad supports sustained 31.3 A operation without external heatsinks when properly laid out on FR-4 PCB copper.
Recommended
HVAC Blower Motor Driver
HVAC blower motors in automotive climate-control systems need 15-25 A peak current and PWM speed control, both of which the BTS700121ESPXUMA2 supports natively. The analog IS output closes the speed-control loop in software, replacing mechanical relays with silent electronic switching. Thermal shutdown protects against stalled-rotor conditions where inrush currents exceed 30 A, while the -40 to +150 C operating range covers engine-compartment installations.
Recommended
Door Module Load Switching
Door modules aggregate mirror adjusters, window lifters, and lock actuators - each potentially requiring 10-20 A peaks. The BTS700121ESPXUMA2's high-side topology, 31.3 A rating, and analog current feedback suit high-current mirror-folding motors and window lifters. The PROFET reverse-battery protection allows direct connection to the door-module harness without an external blocking diode, saving PCB area and reducing BOM cost in volume production.
Recommended
Recommended Products Summary
Engineering reference data for BTS700121ESPXUMA2 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS700121ESPXUMA1 | BTS70041EPPXUMA1 | BTS70021EPPXUMA1 | BTS500801TEAAUMA1 | BTS452RATMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TSDSO-24-32 | PG-TSDSO-24-32 - same | PG-TSDSO-24-32 - same | PG-TSDSO-24-32 - same | PG-TO252-5 (DPAK) | PG-TO252-5 (DPAK) |
| Continuous Load Current | 31.3 A | 31.3 A | ~8 A | ~21 A | [DATA_NEEDED] | [DATA_NEEDED] |
| Nominal Supply Voltage | 13.5 V | 13.5 V | 13.5 V | 13.5 V | 13.5 V | 13.5 V |
| Topology | High-Side N-Channel | High-Side N-Channel | High-Side N-Channel | High-Side N-Channel | High-Side N-Channel | High-Side N-Channel |
| Diagnostic Output | IS pin (analog current sense) | IS pin | IS pin | IS pin | IS pin | IS pin |
| Operating Temperature | -40 to +150 C | -40 to +150 C | -40 to +150 C | -40 to +150 C | -40 to +150 C | -40 to +150 C |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Highest continuous current in PG-TSDSO-24-32 PROFET family (vs BTS70021EPPXUMA1)
- Analog current sense with full diagnostic feature set (vs BTS500801TEAAUMA1)
- Same package enables drop-in scaling of BCM channel count (vs BTS452RATMA1)
Design Notes
The PG-TSDSO-24-32 package requires an exposed thermal pad soldered to a sufficient PCB copper pour. Estimated: at 31.3 A continuous current and an on-state resistance of ~10 milliohms (verify against datasheet), power dissipation is approximately 9.8 W, requiring at least 4 square inches of 2 oz copper to keep junction temperature below 150 C. Without adequate PCB copper, thermal shutdown will trigger prematurely.
Use wide, short traces for Vbb and OUT pins to minimize conduction losses and thermal gradient. The PG-TSDSO-24-32 thermal pad should use thermal vias (typically 9-16 vias of 0.3 mm diameter) connecting the top copper pour to internal ground planes. Keep logic traces (IN, IS, DEN) away from OUT traces to avoid noise coupling into the analog current-sense path.
Do not connect the IS pin directly to a microcontroller ADC without a series resistor or clamping protection - load-dump transients can push IS above the ADC's input voltage range. Add an external TVS or Zener clamp on Vbb if the design can be reverse-wired during service. Never float the IN pin; tie it to GND through a pull-down resistor if the host MCU might be in high-impedance state during boot-up.
Compliance Information
Infineon PROFET family is AEC-Q100 qualified for automotive use. RoHS and REACH compliant per Infineon product page. Halogen-free per JEDEC JS709A definition.
