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SC453TSTRT
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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 28TSSOP
- 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)：3V ~ 25V
- Frequency - Switching：-
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable, Soft Start
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：28-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：28-TSSOP
- Grade：-
- Qualification：-
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Overview
The SC453TSTRT is a single-chip high-performance hysteretic PWM controller from the Semtech SC453 series. It features an integrated SmartDrive for powering advanced graphics and core processors. The device supports sleep mode and boot voltage, with automatic powersave to prevent negative current in low-side FETs during light loads. It includes a high-side driver that initially turns on with weak drive to reduce ringing, EMI, and capacitive turn-on of the low side.
Feature Summary
- Integrated SmartDrive technology for advanced processor power management
- Automatic powersave function prevents negative current flow in low-side FETs
- High-side driver utilizes weak initial drive to minimize ringing and EMI
Applications
- Powering advanced graphics processors
- Powering core processors
- Single chip hysteretic PWM control applications
Procurement Notes
Verify the specific suffix 'TS' against official Semtech documentation to confirm package type and tape/reel specifications. Confirm end-of-life status or availability through authorized distributors, as component lifecycle stages change frequently. Ensure the ordering part number matches the exact electrical and mechanical requirements of your design before procurement.
Selection Notes
Select this component when a single-chip solution for hysteretic PWM control is required for graphics or core processors. Consider its integrated SmartDrive and automatic powersave features for efficiency in light-load conditions. Evaluate the weak-drive high-side feature if reducing EMI and ringing is critical for the system's signal integrity.
Part Context
The SC453TSTRT belongs to the SC453 series of specialized power management ICs. This series focuses on providing efficient power solutions for demanding applications like graphics and core processing. The device integrates control logic and drivers to simplify the design of complex power systems while maintaining high performance.
FAQ
How does the SC453 handle light load conditions?
It employs an automatic powersave function to prevent negative current flow in the low-side FET, thereby saving additional power.
What is the purpose of the weak drive in the high-side driver?
The high-side driver initially turns on with a weak drive to reduce ringing, electromagnetic interference (EMI), and capacitive turn-on of the low-side FET.
