uP8801S数据手册uPI(UBIQ)中文资料规格书

描述 Description

The uP8801S is a 3A ultra low dropout linear regulatorspecifically designed for motherboard, notebook and graphiccard applications. This device works with dual supplies, acontrol input for the control circuitry and a power input aslow as 1.2V for providing current to output. The uP8801Sdelivers high-current and ultra-low-drop output voltage aslow as 0.8V for applications where VOUT is very close toVIN.

The uP8801S features comprehensive control andprotection functions: a power on reset (POR) circuit formonitoring both control and power inputs for properoperation; an EN input for enabling or disabling the device,a power OK with time delay for indicating the output voltagestatus, a foldback current limit function, and a thermalshutdown function.

The uP8801S is available in PSOP - 8L or WDFN3x3 - 10Lpackages with very low thermal resistance.

特性 Features

• Works with 1.2V~5.5V VIN
• Adjustable Output Voltage, Down to 0.8V
• 1.5% Initial Accuracy
• Excellent Line and Load Regulation

• 3A Guaranteed Output Current
• 300mV @ 3A Dropout Voltage

• Very Low On-Resistance
• 100mΩ typical

• VOUT Pull Low Resistance when Disabled
• VOUT Power OK Signal
• Fast Transient Response
• Low External Component Count
• Low Cost and Easy to Use
• Over Current and Over Temperature Protection
• RoHS Compliant and Halogen Free

应用 Application

• Desktop PCs, Notebooks, and Workstations
• Graphic Cards
• Low Voltage Logic Supplies
• Microprocessor and Chipset Supplies
• Split Plane Microprocessor Supplies
• Advanced Graphics Cards Supplies
• SoundCards and Auxiliary Power Supplies
• SMPS Post Regulators