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SC1109

Features: · 1.8V, 2.5V linear controllers· LDOs track input voltage within 200mV until regulation· Integrated drivers· Power Good Signal· Soft Start· Lossless Current SenseApplication· Pentium® III Motherboards· Triple power suppliesPinoutSpecifications Parameter Symbol Maximum Units ...

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SeekIC No. : 004485411 Detail

SC1109: Features: · 1.8V, 2.5V linear controllers· LDOs track input voltage within 200mV until regulation· Integrated drivers· Power Good Signal· Soft Start· Lossless Current SenseApplication· Pentium® ...

SC1109 Data Sheet

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Part Number:
SC1109
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/23

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Product Details

Description



Features:

·  1.8V, 2.5V linear controllers
·  LDOs track input voltage within 200mV until regulation
·  Integrated drivers
·  Power Good Signal
·  Soft Start
·  Lossless Current Sense




Application

·  Pentium® III Motherboards
·  Triple power supplies




Pinout

Connection Diagram


Specifications

Parameter Symbol Maximum Units
VCC, to GND   -0.3 to7 V
STBY to GND   -0.3 to +7 V
BST to GND   -0.3 to 15 V
PHASE to GND   -1 to +8 V
LDOSx   -0.3 to 5 V
Operating Temperature Range TA 0 to +70 °C
Junction Temperature Range TJ 0 to +125 °C
Storage Temperature Range TSTG -65 to +150 °C
Lead Temperature (Soldering) 10 seconds TL 300 °C
Thermal Impedance Junction to Ambient JA 130 °C/W
Thermal Impedance Junction to Case JC 30 °C/W



Description

The SC1109 was designed for the latest high speed motherboards. It combines a synchronous voltage mode controller (switching section) with two low-dropout linear regulator controllers. The voltage mode controller provides the power supply for the system AGTL bus. The 1.8V and 2.5V linear controllers power the Chipset and clock circuitry.

The SC1109 switching section features lossless current sensing and latched driver outputs for enhanced noise immunity. It operates at a fixed frequency of 200kHz, the output voltage is internally fixed at 1.2V.

The SC1109 linear sections are low dropout regulators designed to track the 3.3V power supply when it turns on or off.




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