MAX1546ETL中文资料PLASTIC ENCAPSULATED DEVICES数据手册ADI规格书

描述 Description

Device Description
General
The MAX1546 is a dual-phase, Quick-PWM™, step-down controllers for Intel IMVP™ CPU core supplies. Dual-phase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties. The Quick-PWM control scheme provides instantaneous response to fast load-current steps. The MAX1546 includes active voltage positioning with adjustable gain and offset, reducing power dissipation and bulk output capacitance requirements.The MAX1546 is intended for twodifferent notebook CPU core applications: stepping down the battery directly or stepping down the 5V system supply to create the core voltage. The singlestage conversion method allows this device to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the 5V system supply instead of the battery) at a higher switching frequency provides the minimum possible physical size.The MAX1546 complies with the IMVP-V specifications. The switching regulator features soft-start and power-up sequencing. The MAX1546 also features independent four-level logic inputs for setting the suspend voltage (S0–S1). The MAX1546 includes output undervoltage protection, thermal protection, and voltage regulator power-OK (VROK) output. When any of these protection features detect a fault, the controller shuts down. Additionally, the MAX1546 includes overvoltage protectionThe MAX1546 is available in low profile, 40-pin 6mm x 6mm thin QFN packages.