SP6654数据手册集成电路（IC）的DCDC开关稳压器规格书PDF

描述 Description

The SP6654 is an 800mA synchronous buck regulator which is ideal for portable applications that use a Li-ion or 3-cell alkaline/NiCD/NiMH input. The SP6654’s proprietary control loop, 20μA light load quiescent current, and 0.3Ω power switches provide excellent efficiency across a wide range of output currents. As the input battery supply decreases towards the output voltage, the SP6654 seamlessly transitions into 100% duty cycle operation - further extending useful battery life. The SP6654 is protected against overload and short-circuit conditions with a precise inductor peak current limit. Other features include programmable undervoltage lockout, externally programmed output voltage down to 1.0V, logic level shutdown control and an open drain power good indicator when VOUT is above 94% of its programmed value.

特性 Features

·Ultra-low 20µA quiescent current
·98% efficiency possible
·800mA output current
·2.7V to 5.5V input voltage range
·Output adjustable down to 1.0V
·No external FETs required
·1.25A inductor peak current limit
·100% duty ratio low dropout operation
·80µA light load quiescent current in dropout
·Logic shutdown control
·Programmable UVLO
·Small 10-pin MSOP package and small DFN package
·Power good indicator

应用 Application

Design ToolsTechnical Library·Application Notes
·Evaluation Board Manuals