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SC1158

Features: • Low cost / full featured• Synchronous operation• 4 Bit VID DAC programmable output (1% tolerance)•Meets Intel VRM8.2 (Pentium® II) high range•=1.5% ReferenceApplication•= Pentium® II, K6-2 Core Supplies•= Multiple Microprocessor Supplie...

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SeekIC No. : 004485430 Detail

SC1158: Features: • Low cost / full featured• Synchronous operation• 4 Bit VID DAC programmable output (1% tolerance)•Meets Intel VRM8.2 (Pentium® II) high range•=1.5% Refe...

SC1158 Data Sheet

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Part Number:
SC1158
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:

• Low cost / full featured
• Synchronous operation
• 4 Bit VID DAC programmable output (1% tolerance)
•Meets Intel VRM8.2 (Pentium® II) high range
•=1.5% Reference




Application

•= Pentium® II, K6-2 Core Supplies
•= Multiple Microprocessor Supplies
•= Voltage Regulator Modules (VRM)
•= Programmable Power Supplies
•= High Efficiency DC/DC Conversion




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
Thermal Resistance Junction to Case JC 30 °C/W
Thermal Resistance Junction to Ambient JA 130 °C/W
Operating Temperature Range TA 0 to 70 °C
Storage Temperature Range TSTG -65 to +150 °C
Lead Temperature (Soldering) 10 sec TLEAD 300 °C
ESD Rating (Human Body Model) ESD 1.5 kV



Description

The SC1158 is a low-cost, full featured, synchronous voltage-mode controller designed for use in single ended power supply applications where efficiency is of primary concern. Synchronous operation allows for the elimination of heat sinks in many applications. The SC1158 is ideal for implementing DC/DC converters needed to power advanced microprocessors such as Pentium® ll and K6-2. Internal level-shift, high-side drive circuitry, and preset shoot-thru control, allows for use of inexpensive N-channel power switches.

SC1158 features include an integrated 4-bit VID DAC, temperature compensated voltage reference, triangle wave oscillator, current limit comparator, frequency shift over-current protection, and an internally compensated error amplifier.

The SC1158 operates at a fixed 140KHz, providing an optimum compromise between efficiency, external component size, and cost.




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