Products
Power Management
Semtech SC1189
Programmable Synchronous DC/DC Converter, Dual LDO Controller
Not Recommended for New Designs. Datasheet is for information purposes only.
The SC1189 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®III.Overview
Features
- Synchronous design, enables no heatsink solution
- 95% efficiency (switching section)
- 5-bit DAC for output programmability
- Designed for Intel Pentium® III requirements
- 1.25 V, 2.5 V short-circuit-protected linear controllers
- Linear controllers adjustable to 1.8 V chipset.
- VRM 8.5 Compliant
- VRM 8.4 Compliant (1.3 V to 1.8 V)
- 1.0% accuracy (1.6 V to 1.8 V)
- On-chip power-good signal
- Available in Lead free package, fully WEEE and RoHS compiant
Applications
- Pentium® III microprocessor supplies
- 1.050 V to 1.825 V microprocessor supplies
- Programmable triple power supplies
Packaging
SOIC-24
Order Codes
- SC1189SWTR: Package Minimum Tape & Reel Only
- SC1189SWTRT: Lead-free, RoHS and WEEE compliant, 1000 pcs. Tape & Reel
Diagrams and Specs
Block Diagram
Click diagram to enlarge