US3012MCW, US3018, US3018CW Selling Leads, Datasheet
MFG:UNISEM Package Cooled:SOP D/C:04+
US3012MCW, US3018, US3018CW Datasheet download
Part Number: US3012MCW
MFG: UNISEM
Package Cooled: SOP
D/C: 04+
US3012MCW, US3018, US3018CW
- Table of contents:
Info of US3012MCW
Info of US3018
Info of US3018CW
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About US30
PDF/DataSheet Download
Datasheet: US30
File Size: 157326 KB
Manufacturer: MICROSEMI [Microsemi Corporation]
Download : Click here to Download
About US3018
PDF/DataSheet Download
Datasheet: US3018
File Size: 110868 KB
Manufacturer: UNISEM [UNISEM]
Download : Click here to Download
About US3018CW
PDF/DataSheet Download
Datasheet: US3018CW
File Size: 110868 KB
Manufacturer: UNISEM [UNISEM]
Download : Click here to Download
US3018 General Description
The US3018 controller IC is specifically designed to meet Intel specification for Pentium IIä microprocessor applications as well as the next generation of P6 family processors. The US3018 provides a single chip controller IC for the Vcore , LDO controller for GTL+ and an internal 200mA regulator for clock supply which are required for the Pentium II applications.
These devices feature a patented topology that in combination with a few external components as shown in the typical application circuit ,will provide in excess of 18A of output current for an on- board DC/DC converter while automatically providing the right output voltage via the 5 bit internal DAC. The US3018 also features, loss less current sensing for both switchers by using the Rds-on of the high side Power MOSFET as the sensing resistor, internal current limiting for the clock supply, a Power Good window comparator that switches its open collector output low when any one of the outputs is outside of a pre programmed window. Other features of the device are ; Undervoltage lockout for both 5V and 12V supplies, an external programmable soft start function , programming the oscillator frequency via an external resistor, OVP circuitry for both switcher outputs and an internal thermal shutdown.
US3018 Maximum Ratings
V5 supply Voltage ........................................... 7V
V12 Supply Voltage ............................................ 20V
Storage Temperature Range ........................ -65 TO 150°C
Operating Junction Temperature Range .......... 0 TO 125°C
V12 Supply Voltage ............................................ 20V
Storage Temperature Range ........................ -65 TO 150°C
Operating Junction Temperature Range .......... 0 TO 125°C
US3018 Features
·Provides Single Chip Solution for Vcore, GTL+ & Clock Supply
·200 mA On board LDO regulator
·Designed to meet the latest Intel specification for Pentium IIä
·On board DAC programs the output voltage from 1.3V to 3.5V
·Linear regulator controller on board for 1.5V
·GTL+ supply
·Loss less Short Circuit Protection with HICCUP
·Synchronous operation allows maximum efficiency
·Patented architecture allows fixed frequency operation as well as 100% duty cycle during dynamic load
·Soft Start
·High current totem pole driver for direct driving of the external Power MOSFET
·Power Good function Monitors all Outputs
·OVP Circuitry Protects the Switcher Output and generates a Fault signal
Thermal Shutdown
Logic Level Enable Input
·200 mA On board LDO regulator
·Designed to meet the latest Intel specification for Pentium IIä
·On board DAC programs the output voltage from 1.3V to 3.5V
·Linear regulator controller on board for 1.5V
·GTL+ supply
·Loss less Short Circuit Protection with HICCUP
·Synchronous operation allows maximum efficiency
·Patented architecture allows fixed frequency operation as well as 100% duty cycle during dynamic load
·Soft Start
·High current totem pole driver for direct driving of the external Power MOSFET
·Power Good function Monitors all Outputs
·OVP Circuitry Protects the Switcher Output and generates a Fault signal
Thermal Shutdown
Logic Level Enable Input
US3018 Typical Application
· Total Power Soloution for Pentium II processor application
US3018 Connection Diagram
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