MAX786|MAX786R|MAX786S是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX786|MAX786R|MAX786S是双输出电源控制器，用于笔记本电脑，本站介绍了MAX786|MAX786R|MAX786S的封装应用图解、特点和优点、功能等，并给出了与MAX786|MAX786R|MAX786S相关的Maxim元器件型号供参考。
MAX786|MAX786R|MAX786S - 双输出电源控制器，用于笔记本电脑 - DC-DC开关调节器 - 3.3V、5V双输出笔记本电脑电源，以高于> 90%的效率提供高达50W的功率 - 美信半导体
The MAX786 is a system-engineered power-supply controller for notebook computers or similar battery-powered equipment. It provides two high-performance step-down (buck) pulse-width modulators (PWMs) for +3.3V and +5V. Other features include dual, low-dropout, micropower linear regulators for CMOS/RTC back-up, and two precision low-battery-detection comparators.
High efficiency (95% at 2A; greater than 80% at loads from 5mA to 3A) is achieved through synchronous rectification and PWM operation at heavy loads, andIdle Mode™ operation at light loads. The MAX786 uses physically small components, thanks to high operating frequencies (300kHz/200kHz) and a new current-mode PWM architecture that allows for output filter capacitors as small as 30µF per ampere of load. Line- and load-transient responses are terrific, with a high 60kHz unity-gain crossover frequency allowing output transients to be corrected within four or five clock cycles. Low system cost is achieved through a high level of integration and the use of low-cost, external N-channel MOSFETs.
Other features include low-noise, fixed-frequency PWM operation at moderate to heavy loads, and a synchronizable oscillator for noise-sensitive applications such as electromagnetic pen-based systems and communicating computers. The MAX786 is a monolithic, BiCMOS IC available in fine-pitch, surface-mount SSOP packages.
