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S-8521D35MC-BXUT2U
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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：60kHz
- 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-8521D35MC-BXUT2U is a step-down DC/DC switching controller manufactured by ABLIC Inc. It operates with a fixed switching frequency of 60kHz and supports a maximum duty cycle of 100%. The device accepts an input voltage range from 2.5V to 16V and provides a single positive output configuration. Designed for surface-mount installation, it utilizes the SC-74A (SOT-753) package. The component functions within a temperature range of -40°C to +85°C and lacks synchronous rectification or clock synchronization capabilities.
Feature Summary
- Supports 100% maximum duty cycle operation for low dropout performance
- Integrates enable control functionality for power management
- Utilizes transistor driver output stage for external switch control
Applications
- General-purpose step-down DC/DC converter circuits
- Battery-powered portable electronic devices
- Embedded systems requiring regulated lower voltage rails
Procurement Notes
Verify the specific suffix 'BXUT2U' against official ABLIC documentation to confirm exact marking codes and tape/reel specifications. Ensure compatibility with standard SOT-753 footprint designs. Confirm RoHS3 compliance status through current manufacturer environmental statements prior to final procurement authorization.
Selection Notes
Select this controller when a fixed 60kHz switching frequency is required for EMI management. Choose this part for applications needing a wide 16V input range and 100% duty cycle capability. Consider the SOT-753 package constraints for PCB layout space. Verify that external inductor and capacitor selections align with the non-synchronous topology requirements.
Part Context
This component belongs to the S-8521 series of step-down switching controllers from ABLIC Inc. The series is designed for efficient power conversion in compact form factors. It complements other PMIC offerings by providing dedicated control logic for external power switches rather than integrated solutions.
Replacement Considerations
The S-8521D35MC-BXMT2U is a documented substitute variant within the same series. Verify pinout and electrical parameter equivalence before substitution.
