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SC1183

Features: · Synchronous design, enables no heatsink solution· 95% efficiency (switching section)· 5 bit DAC for output programmability· On chip power good function· Designed for Intel Pentium® ll VRM8.1 requirements· 1.5V, 2.5V or Adj. @ 1% for linear sectionApplication·Pentium® ll or Desc...

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SeekIC No. : 004485441 Detail

SC1183: Features: · Synchronous design, enables no heatsink solution· 95% efficiency (switching section)· 5 bit DAC for output programmability· On chip power good function· Designed for Intel Pentium® l...

SC1183 Data Sheet

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Part Number:
SC1183
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: 2025/12/26

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Product Details

Description



Features:

·  Synchronous design, enables no heatsink solution
·  95% efficiency (switching section)
·  5 bit DAC for output programmability
·  On chip power good function
·  Designed for Intel Pentium® ll VRM8.1 requirements
·  1.5V, 2.5V or Adj. @ 1% for linear section




Application

· Pentium® ll or Deschutes microprocessor supplies
· Flexible motherboards
· 1.3V to 3.5V microprocessor supplies
· Programmable triple power supplies




Pinout

Connection Diagram


Specifications

Parameter Symbol Maximum Units
VCC to GND VIN -0.3 to +7 V
PGND to GND   ± 1 V
BST to GND   -0.3 to +15 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 80 °C/W
Thermal Impedance Junction to Case JC 25 °C/W



Description

The SC1182/3 combines a synchronous voltage mode controller with two low-dropout linear regulators providing most of the circuitry necessary to implement three DC/DC converters for powering advanced microprocessors such as Pentium® II (Klamath) or Deschutes.

The SC1182/3 switching section features an integrated 5 bit D/A converter, pulse by pulse current limiting, integrated power good signaling, and logic compatible shutdown. The SC1182/3 switching section operates at a fixed frequency of 200kHz, providing an optimum compromise between size, efficiency and cost in the intended application areas. The integrated D/A converter provides programmability of output voltage from 2.0V to 3.5V in 100mV increments and 1.30V to 2.05V in 50mV increments with no external components.

The SC1182/3 linear sections are low dropout regulators. The SC1182 supplies 1.5V for GTL bus and 2.5V for non-GTL I/O.




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