{"product_id":"l9958sb-spi-controlled-h-bridge-driver-ic-8-6a-output-for-automotive-throttle-ignition-actuators","title":"L9958SB SPI-Controlled H-Bridge Driver IC – 8.6A Output for Automotive Throttle \u0026 Ignition Actuators","description":"\u003cp\u003eThe L9958SB is a fully integrated H-bridge driver IC designed for DC motor and stepper motor control in safety-critical automotive applications. This powerful driver serves as a direct replacement for failed throttle valve, electronic throttle body, and ignition control driver stages found in modern Engine Control Units (ECUs).\u003c\/p\u003e\n\u003cp\u003ePower Stage \u0026amp; Current Capability:\u003cbr\u003eThe device delivers an impressive output current capability up to 8.6A, making it suitable for demanding actuator loads. It operates with a load voltage range from 4.0V to 28V, covering both standard 12V and 24V automotive electrical systems. The control supply voltage is specified from 4.5V to 5.5V. With a full-path on-resistance ranging from 100mΩ at low temperatures to 300mΩ at high temperatures, the L9958SB ensures minimal power dissipation and high efficiency during operation.\u003c\/p\u003e\n\u003cp\u003eSPI Control \u0026amp; Diagnostic Interface:\u003cbr\u003eA comprehensive 16-bit SPI interface provides full configuration and real-time diagnostic capabilities. The SPI allows the main microcontroller to set current regulation thresholds in four steps (2.5A to 8.6A typical) and monitor detailed fault conditions. Diagnostics include short circuit to battery, short circuit to ground, short circuit overload, and over-temperature detection. Open-load can be detected in ON condition. The SPI interface also supports daisy-chain configuration, enabling multiple devices to be controlled through a single bus.\u003c\/p\u003e\n\u003cp\u003eProtection Features \u0026amp; Thermal Management:\u003cbr\u003eThe L9958SB is equipped with robust protection mechanisms for extreme automotive environments. It includes over-temperature protection with thermal shutdown, undervoltage lockout for both Vs and Vdd supplies, and overvoltage protection on Vdd. When junction temperature exceeds 165°C, the current limitation threshold is linearly reduced and a thermal warning bit is set via SPI. The device also features an enable\/disable input and low standby current below 10µA, helping preserve battery life.\u003c\/p\u003e\n\u003cp\u003ePWM Operation \u0026amp; EMI Control:\u003cbr\u003eThe driver supports PWM operation at frequencies up to 20kHz, offering flexibility for various motor speed and torque control strategies. Integrated voltage and current slew-rate control, programmable through SPI, helps reduce electromagnetic interference (EMI) in noise-sensitive automotive electronics.\u003c\/p\u003e\n\u003cp\u003eRepair \u0026amp; Replacement Value:\u003cbr\u003eFor ECU repair technicians and automotive workshops, the L9958SB offers a direct drop-in replacement solution for failed driver stages in throttle control modules, ignition systems, and electronic valve actuators. Its high integration and comprehensive protection features make it a reliable choice for restoring full system functionality without replacing the entire ECU assembly.\u003c\/p\u003e","brand":"Qlnova","offers":[{"title":"Default Title","offer_id":45422269104237,"sku":null,"price":13.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/5950\/8845\/files\/L9958SB-1.webp?v=1783048550","url":"https:\/\/qlnova.com\/products\/l9958sb-spi-controlled-h-bridge-driver-ic-8-6a-output-for-automotive-throttle-ignition-actuators","provider":"Qlnova","version":"1.0","type":"link"}