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S-8521B20MC-ATFT2U
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Product Detailed Parameters
- Description：IC REG CTRLR BUCK SOT23-5
- Series：-
- Mfr：ABLIC Inc.
- 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)：2.5V ~ 16V
- Frequency - Switching：180kHz
- Duty Cycle (Max)：100%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
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Overview
The S-8521B20MC-ATFT2U is a step-down DC-DC switching controller manufactured by ABLIC Inc. It operates within an input voltage range of 2.5V to 16V and features a fixed switching frequency of 180kHz. The device supports a maximum duty cycle of 100% and utilizes a non-synchronous rectifier topology. Packaged in a compact SOT-23-5 outline, it serves as a positive output buck regulator IC designed for efficient power management applications.
Feature Summary
- Supports wide input voltage range from 2.5V to 16V
- Fixed 180kHz switching frequency operation
- Capable of 100% maximum duty cycle
- Non-synchronous rectifier design
Applications
- Battery-powered portable devices
- General-purpose step-down power supplies
- Embedded system voltage regulation
Procurement Notes
Verify the specific suffix ATFT2U against official ABLIC documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status through the manufacturer's current datasheet or environmental declaration. Ensure compatibility with existing PCB footprints for the SOT-23-5 package before finalizing procurement decisions.
Selection Notes
Select this component when a fixed 180kHz frequency and wide input range are required. The non-synchronous design may impact efficiency compared to synchronous alternatives at low loads. Verify that the 100% duty cycle capability meets the minimum dropout requirements of the target application circuit.
Part Context
This part belongs to the S-8521 series of DC-DC switching controllers from ABLIC Inc. The series focuses on providing efficient step-down voltage conversion in small packages. The S-8521B20MC variant specifically denotes the electrical characteristics and pinout configuration associated with this model line.
Replacement Considerations
Cross-reference with other S-8521 series variants for different output voltages or frequencies. Check for newer generations from ABLIC or equivalent parts from other manufacturers offering synchronous rectification if higher efficiency is needed.
