器件名称:
LT8620
功能描述:
该器件的快速最短接通时间仅为 30ns，能够以 2MHz 恒定频率從 16V 输入转换至 1.5V 输出，从而允许设计师优化效率，同时避开关键噪声敏感频段。LT8620 的 24 引线 3mm x 5mm QFN 或耐热性能增强型MSOP-16E 封装与高开关频率相结合，允许使用很小的外部电感器和电容器，从而可构成一个占板面积紧凑和热效率高的解决方案。
文件大小:
312.47KB 共24页
简 介:
FEATURES Wide Input Voltage Range: 3.4V to 65V n Ultralow Quiescent Current Burst Mode Operation: 2.5μA IQ Regulating 12VIN to 3.3VOUT Output Ripple < 10mVP-P n High Efficiency Synchronous Operation: 94% Efficiency at 1A, 12VIN to 5VOUT 92% Efficiency at 1A, 12VIN to 3.3VOUT n Fast 30ns Minimum Switch-On Time n Low Dropout Under All Conditions: 250mV at 1A n Safely Tolerates Inductor Saturation in Overload n Low EMI n Adjustable and Synchronizable: 200kHz to 2.2MHz n Accurate 1V Enable Pin Threshold n Internal Compensation n Output Soft-Start and Tracking n Small Thermally Enhanced 16-Lead MSOP and 24-Lead 3mm × 5mm QFN Packages n LT8620 65V, 2A Synchronous Step-Down Regulator with 2.5A Quiescent Current DESCRIPTION The LT8620 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that accepts a wide input voltage range up to 65V, and consumes only 2.5A of quiescent current. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. Low ripple Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mVP-P. A SYNC pin allows synchronization to an external clock. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN undervoltage lockout or to shut do……
