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SC1159SW
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Product Detailed Parameters
- Description：IC FET CTLR LINEAR DDR SOIC
- Series：-
- Mfr：Semtech Corporation
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：11.4V ~ 13V
- Frequency - Switching：-
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Power Good, Soft Start
- Operating Temperature：0°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：28-SO
- Grade：-
- Qualification：-
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Overview
The SC1159SW is a programmable synchronous DC/DC hysteretic controller designed for single-ended power supply applications where efficiency is the primary concern. It features a user-selectable hysteresis mode and a 5-bit DAC for output voltage programming ranging from 1.050V to 1.825V. The device includes on-chip power-good and overvoltage protection functions, achieving up to 95% efficiency. It incorporates inhibit, under-voltage lockout, and soft-start functions for controlled power-up, meeting Intel specifications.
Feature Summary
- Hysteretic control architecture with user-selectable hysteresis
- 5-bit DAC programmable output voltage range
- Integrated power-good and overvoltage protection
- Controlled power-up via soft-start and UVLO
Applications
- Server Systems and Workstations
- Pentium III Core Supplies
- AMD Athlon Core Supplies
- Multiple Microprocessor Supplies
- Voltage Regulator Modules
Procurement Notes
Verify the specific suffix 'SW' against official Semtech documentation to confirm package type and temperature rating. Ensure compatibility with VRM 8.5 VID requirements. Confirm RoHS compliance status through authorized distributors. Check for lead-free manufacturing indicators in the ordering code. Validate that the component meets current environmental regulations.
Selection Notes
Select this controller for microprocessor core supplies requiring high efficiency and programmable voltage. The hysteretic topology offers fast transient response suitable for advanced processors. Consider the 1.050V to 1.825V output range when matching processor VID requirements. Evaluate thermal performance based on the intended application environment.
Part Context
The SC1159 series addresses power management needs for advanced microprocessors like Pentium III and AMD Athlon. It supports both single and multiple processor configurations. The device is part of Semtech's portfolio for server and workstation power solutions, focusing on efficiency and compliance with industry standards.
Replacement Considerations
SC1150 and SC1151 are related programmable DC/DC controllers. Verify functional compatibility and pinout alignment before substitution. Ensure replacement parts meet the same VRM 8.5 VID specifications.
