LX8580A

Features:

Low Dropout, 650mV at 7.5A  Output Current in Dual Supply Mode
Fast Transient Response
Remote Sensing
1mV Load Regulation
Adjustable Output

Application

 Microprocessor/Micro controller Supplies
 3.3V to 2.85V Voltage Conversion
 High-Current Regulators
 Post Regulation for Switching
 Power Supplies


Pinout




Specifications

VCTRL Input Voltage.........................................................................................13V
VPWR Input Voltage............................................................................................7V
Power Dissipation.....................................................................Internally Limited
Operating Junction Temperature..................................................................150°C
Storage Temperature Range...........................................................-65°C to 150°C
Lead Temperature (Soldering 180 seconds).................................................300°C
 
Note:  Exceeding these ratings could cause damage to the device.  All voltages are with  respect to  Ground.  Currents are positive into, negative out of specified terminal. 
 


Description

The LX8580A is a high-performance, very low dropout voltage regulator, designed for use with advanced microprocessors, micro controllers, or video graphics controllers.  This product can be used with separate voltage supplies for the control and power sections, allowing a power regulation dropout voltage as low as 100mV @ 1.5A.  In AGP bus systems requiring regulation of 3.3V to 2.85V @ 3A, the LX8580A has a max dropout of 250mV making it an ideal power supply solution for today's graphics applications.  

The LX8580A can also be used in a single voltage supply configuration with a dropout performance similar to that of the LX8584 (1.3V @7.5A). 

The LX8580A is supplied in a five-terminal TO-220, TO-263, orLinfinity's S-PAK packages, whichallows the implementation of remote(Kelvin) voltage sensing.  This sensing compensates for output voltage variations due to load changes and resistive voltage drops in connectors and board traces.  Typical load regulation measured at the sense pin is less that 1mV for a load current step of 7mA to 7.5A. 

The LX8580A is ideal for generating a secondary 2V-2.85V low voltage supply on a motherboard where a 3.3V supply is already available.