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.
这些低压差 (LDO) 稳压器可确保节能应用的高效功率转换。零负载下的 2μA 静态电流和 300nA 逻辑控制的停机模式有助于在常开待机系统中保持电池能量。这些器件通过输出端上的小型陶瓷电容器实现稳定。
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.
这些汽车器件符合 AEC-Q100 标准，封装为 2mm x 2mm DFN6L 器件，侧面可润湿，可简化印刷电路板设计并便于自动光学检测。它们的输入电压范围很广，允许连接到车辆 12V 总线，瞬态电压最高可达 40V，为信息娱乐系统、仪表盘和高级驾驶辅助系统 (ADAS) 供电。由于静态电流和待机电流低，它们特别适合在电动汽车中使用。
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 都具有系统保护和管理功能，包括内部电流限制、热保护、软启动和输出主动放电。有一个用于关机控制的使能引脚和一个用于诊断监控的电源良好引脚。LDQ40 设备还具有短路保护功能。
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，请访问 www.st.com/ldo-for-汽车