The STEVAL-L6981CDR evaluation board is based on the L6981CDR synchronous monolithic step-down regulator capable of delivering up to 1.5 A DC. Its wide input voltage range makes the device suitable for a broad range of applications. The device implements peak current mode architecture in an SO 8L package with internal compensation to minimize design complexity and size. The L6981 is available in low consumption mode (LCM) and low noise mode (LNM)versions.LCM maximizes efficiency at light load with controlled output voltage ripple, making the device extremely suitable for battery-powered applications.LNM makes the switching frequency constant and minimizes the output voltage ripple overload current range, meeting the specification for noise sensitive applications.The EN pin manages the enable/disable function. The typical shutdown current is 2 μA when disabled. When the EN pin is pulled up, the device is enabled and the internal 1.3 ms soft-start takes place. Pulse-by-pulse current sensing on both power elements implements effective constant current protection while thermal shutdown prevents thermal run-away.
大大通精彩博文 基於L6981CDR同步DC-DC降壓晶片開發板 STEVAL-L6981CDR商品介紹
大大通精彩博文 NPI超級博文 - ST NPI產品上新啦! ST NPI 有哪些市場主流？ >> ST NPI產品清單
• 3.5 V to 38 V operating input voltage• Output voltage from 0.85 V to VIN• 1.5 A DC output current• Internal compensation network• Two different versions: LCM for high efficiency at light loads and LNM for noise sensitive applications• 2 μA shutdown current• Internal soft-start• Enable function• Overvoltage protection• Output voltage sequencing• Thermal protection• SO 8L package• Synchronization with external clock for LNM devices