STM32G431KBT6U STMicroelectronics Integrated Circuit (Quad Flat Packages) In Stock
The STM32G431KBT6U is a mainstream ARM Cortex-M4 32-bit MCU running up to 170 MHz with 128 KB Flash and 32 KB SRAM in a 32-pin LQFP package. It integrates a hardware FPU, high-resolution timers, and 12-bit ADC for motor control and digital power applications. From $2.80 in stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat Packages
- Pin Count
- 32
- Lifecycle
- ACTIVE
- Datasheet
- STM32G431KBT6U Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STM32G431KBT6U?
- ARM Cortex-M4 core with FPU running at up to 170 MHz, 128 KB Flash, and 32 KB SRAM enabling high-performance motor control and digital power conversion algorithms
- High-resolution timer (HRTIM) with sub-nanosecond resolution and multiple 12-bit ADC channels for precise duty cycle generation in SMPS and inverter designs
- 32-pin LQFP package in a compact 7 mm × 7 mm footprint ideal for space-constrained industrial motor drives, power tools, and consumer appliance control boards
What is STM32G431KBT6U used for?
The STM32G431KBT6U is optimized for field-oriented control (FOC) of BLDC and PMSM motors in power tools, HVAC fan drives, and e-bike controllers, leveraging its 170 MHz Cortex-M4 FPU for real-time transform calculations. Its HRTIM with sub-nanosecond resolution supports switched-mode power supply (SMPS) designs such as PFC stages, DC-DC converters, and digital power factor correction circuits. The 32-pin compact package is well-suited for cost-sensitive consumer and industrial applications where board footprint and BOM cost must be minimized.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the STM32G431KBT6U datasheet?
STM32G431KBT6U Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STM32G431KBT6U?
Compatible alternatives and drop-in replacements for STM32G431KBT6U:
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4 CPU, 150MHz, CMOS, PQFP48
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4 CPU, 170MHz, CMOS, PQFP64
Frequently Asked Questions
How does the HRTIM in the STM32G431KBT6U benefit switched-mode power supply designs?
The STM32G431KBT6U's High-Resolution Timer (HRTIM) achieves timing resolution down to approximately 184 ps (at 170 MHz system clock with internal PLL multiplication), enabling precise dead-time control and duty cycle adjustment in LLC resonant converters, interleaved boost PFCs, and synchronous buck regulators. This sub-nanosecond resolution reduces switching losses and output ripple compared to standard 16-bit timers, improving efficiency by 1–3% in 200 W to 2 kW power stages.
Which motor control algorithms run efficiently on the STM32G431KBT6U's Cortex-M4 FPU?
The STM32G431KBT6U's Cortex-M4 core with single-precision FPU executes Clarke and Park transforms, space-vector modulation (SVM), and PI/PID control loops entirely in hardware floating point, achieving FOC loop cycle times below 10 µs at 170 MHz. ST's MotorControl Workbench and X-CUBE-MCSDK provide ready-to-compile STM32G4 firmware for PMSM and BLDC sensorless or Hall-sensor FOC, reducing development time from months to weeks.
For a 32-pin compact motor drive PCB, how does the STM32G431KBT6U's LQFP-32 footprint compare to larger variants?
The STM32G431KBT6U in LQFP-32 occupies a 7 mm × 7 mm body with 0.8 mm lead pitch, roughly 4× smaller than the 10 mm × 10 mm LQFP-64 package used by higher-pin-count STM32G4 variants. For single-phase inverter boards, e-bike motor controllers, and power tool PCBs where 32 GPIO pins and 128 KB Flash suffice, the LQFP-32 saves significant board area and reduces PCB layer count, lowering system cost by $2–$5 per board in volume.
When should a designer choose the STM32G431KBT6U over the STM32G431KBT6 (non-U suffix)?
The STM32G431KBT6U (U-suffix) is the UFQFPN-32 ultra-thin flat no-lead package version versus the KBT6 which uses the LQFP-32 leaded package. The UFQFPN-32 measures approximately 5 mm × 5 mm, making it 50% smaller than the LQFP-32's 7 mm × 7 mm body, and its exposed thermal pad improves heat dissipation at 170 MHz continuous operation. It is preferred for high-density compact motor drives, wearable power tools, and IoT edge nodes where PCB area is at a premium.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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