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SC1103CSTRT
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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 8SOIC
- Series：-
- Mfr：Semtech Corporation
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：3.8V ~ 12V
- Frequency - Switching：200kHz
- Duty Cycle (Max)：95%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：-
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The SC1103CSTRT is a voltage-mode PWM controller designed for 12V input DC/DC power supply applications. It operates at a fixed switching frequency of 200 kHz, optimizing the balance between efficiency and external component size. The device supports positive output step-down (buck) topology with a single output phase. It functions within a supply voltage range of 3.8V to 12V. The component is housed in an 8-SOIC surface-mount package.
Feature Summary
- Voltage-mode PWM control architecture
- Fixed 200 kHz switching frequency operation
- Designed for 12V input step-down applications
Applications
- 12V input DC/DC power supplies
- Positive output step-down converters
- Buck regulator designs
Procurement Notes
Verify the specific suffix 'CSTRT' against the manufacturer's official documentation to confirm pinout, temperature grade, and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the 8-SOIC package. Cross-reference the latest datasheet revision to validate electrical characteristics and ordering information before finalizing procurement.
Selection Notes
Select this component for applications requiring a fixed-frequency voltage-mode controller with a 12V input profile. The 200 kHz frequency allows for compact passive component selection. Verify that the required output current and voltage levels fall within the capabilities of the associated external power stage components, as this IC serves as the control logic rather than the power switch itself.
Part Context
The SC1103 series consists of versatile, low-cost PWM controllers intended for buck converter topologies. The SC1103CSTRT variant specifically denotes the surface-mount SOIC package configuration. This family targets cost-sensitive power management solutions where fixed-frequency operation simplifies filter design and electromagnetic interference calculations.
Replacement Considerations
Consult Semtech official substitution guides for direct replacements. Verify pin-to-pin compatibility and electrical parameter alignment with alternative voltage-mode PWM controllers from other manufacturers if sourcing constraints require it.
