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S-8521B33MC-ATST2U
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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-8521B33MC-ATST2U is a synchronous rectification step-down switching regulator manufactured by ABLIC Inc. It operates within an input voltage range of 2.5V to 16V and provides a fixed output voltage of 3.3V. The device features a switch frequency of 60kHz and supports a maximum duty cycle of 100%. Designed for surface-mount installation, it utilizes the SOT-23-5 package. The component functions reliably across a temperature range of -40°C to +85°C.
Feature Summary
- Synchronous rectification topology for enhanced efficiency
- Fixed 3.3V output voltage capability
- Integrated enable control function
Applications
- Portable electronic devices requiring efficient power management
- Battery-powered systems with wide input voltage ranges
- General-purpose DC-DC conversion in consumer electronics
Procurement Notes
Verify the specific suffix 'ATST2U' against official ABLIC documentation to confirm exact packaging and tape specifications. Ensure that the selected variant matches the required thermal and electrical characteristics for the target application environment before finalizing procurement orders.
Selection Notes
Select this component when a compact synchronous buck converter is required for inputs up to 16V. The 60kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the load current requirements remain within the safe operating area defined in the manufacturer's datasheet.
Part Context
This part belongs to the S-8521 series of synchronous rectification switching regulators from ABLIC. The series is characterized by high efficiency and compact packaging solutions suitable for space-constrained designs. It serves as a key power management solution for modern portable applications.
Replacement Considerations
Direct substitutes include other parts within the S-8521 family with compatible output voltages and pin configurations. Cross-reference with S-8521A or S-8521C variants if different switching frequencies or additional features are required.
