PM6680数据手册集成电路（IC）的特殊用途稳压器规格书PDF

描述 Description

PM6680 is a dual step-down controller specifically designed to provide extremely high efficiency conversion, with lossless current sensing technique. The constant on-time architecture assures fast load transient response and the embedded voltage feed-forward provides nearly constant switching frequency operation. An embedded integrator control loop compensates the DC voltage error due to the output ripple. Pulse skipping technique increases efficiency at very light load. Moreover a minimum switching frequency of 33kHz is selectable to avoid audio noise issues. The PM6680 provides a selectable switching frequency, allowing three different values of switching frequencies for the two switching sections. The output voltages OUT1 and OUT2 can be adjusted from 0.9 V to 5.5 V and from 0.9 V to 3.3 V respectively.

特性 Features

• Selectable pulse skipping at light loads
• Latched OVP and UVP
• 4mW maximum quiescent power
• Selectable minimum frequency (33kHz) in pulse skip mode
• Output voltage ripple compensation
• Independent power good signals
• Soft-start internally fixed at 2ms
• Negative current limit
• 6V to 28V input voltage range
• 5V always voltage available deliver 100mA peak current
• Adjustable output voltages
• Lossless current sensing using low side MOSFETs RDS(on)
• Soft output discharge
• 1.237V ±1% reference voltage available

简介

PM6680属于集成电路（IC）的特殊用途稳压器。由制造生产的PM6680特殊用途稳压器该系列产品用于电源控制、某种形式的转换，适用于特定的复杂应用。因此，各种产品特性集差异较大，包括空燃比传感器接口、汽车交流发电机电压调节、DDR 端接、液体透镜控制、摩托车转向信号控制、热电 (peltier) 冷却器控制、压电触觉控制、阀门控制、小型发动机管理等。