STMicroelectronics' 40V Industrial and Automotive Linear Regulators Combine Efficiency With Flexibility
STMicroelectronics' 40V Industrial and Automotive Linear Regulators Combine Efficiency With Flexibility
STMicroelectronics' LDH40 and LDQ40 voltage regulators for automotive and industrial applications start-up from an input as low as 3.3V, operate with up to 40V applied, and have low quiescent current. The LDH40 delivers up to 200mA and is available in one version only, having adjustable output voltage from 1.2V to 22V. The 250mA LDQ40 is available with a 1.2V-12V adjustable output and a choice of 1.8V, 2.5V, 3.3V, and 5.0V fixed output voltages.
These low-dropout (LDO) regulators ensure efficient power conversion for energy-conscious applications. The quiescent current of 2μA at zero load and 300nA logic-controlled shutdown mode help preserve battery energy in always-on standby systems. The devices are stabilized with a small ceramic capacitor on the output.
這些低壓差 (LDO) 穩壓器可確保節能應用的高效功率轉換。零負載下的 2μA 靜態電流和 300nA 邏輯控制的停機模式有助於在常開待機系統中保持電池能量。這些器件通過輸出端上的小型陶瓷電容器實現穩定。
The automotive devices are AEC-Q100 qualified and packaged as 2mm x 2mm DFN6L devices with wettable flanks that ease PCB design and facilitate automated optical inspection. Their wide input-voltage range allows connection to a vehicle 12V bus, that can reach up to 40V transient, to power infotainment systems, instrument clusters, and advanced driver-assistance systems (ADAS). With their low quiescent and standby current, they are especially suited to use in electric vehicles.
這些汽車器件符合 AEC-Q100 標準，封裝爲 2mm x 2mm DFN6L 器件，側面可潤溼，可簡化印刷電路板設計並便於自動光學檢測。它們的輸入電壓範圍很廣，允許連接到車輛 12V 總線，瞬態電壓最高可達 40V，爲信息娛樂系統、儀表盤和高級駕駛輔助系統 (ADAS) 供電。由於靜態電流和待機電流低，它們特別適合在電動汽車中使用。
All the LDOs have system protection and management features including internal current limiting, thermal protection, soft-start, and output active discharge. There is an enable pin for shutdown control and a power-good pin for diagnostic monitoring. The LDQ40 devices also have short-circuit protection.
所有 LDO 都具有系統保護和管理功能，包括內部電流限制、熱保護、軟啓動和輸出主動放電。有一個用於關機控制的使能引腳和一個用於診斷監控的電源良好引腳。LDQ40 設備還具有短路保護功能。
The LDH40 automotive-grade regulator is in production now in DFN6L wettable flank package. The adjustable-output LDQ40 regulators, in industrial and automotive grade, are in production as well, in the standard DFN6L package and wettable-flank package for automotive applications. The fixed-output LDQ40 automotive parts with 1.8V, 2.5V, 3.3V and 5.0V will be available within Q2. Industrial LDQ40 3.3V and 5.0V will be available by Q3. Pricing for both automotive products starts from $0.47 for 1000 units. The LDQ40 industrial-grade price starts from $0.40 for 1000 units. Free samples for both LDH40 and LDQ40 are available at the ST eStore.
For more information, please visit www.st.com/ldo-for-automotive
欲了解更多信息，請訪問 www.st.com/ldo-for-汽車