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Product Detailed Parameters
- Description：IC REG CTRLR BUCK SOT23-5
- Series：-
- Mfr：ABLIC Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 ~ 10V
- 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-8521C16MC-BTBT2U is a step-down DC/DC switching controller manufactured by ABLIC Inc. It operates with a fixed switching frequency of 60 kHz and supports a maximum duty cycle of 100%. The device requires a supply voltage (Vcc/Vdd) ranging from 2.5 V to 10 V. It features a single positive output configuration and utilizes a transistor driver output stage. The component is housed in an SC-74A or SOT-753 package, equivalent to SOT-23-5, and is rated for an operating temperature range of -40°C to +85°C.
Feature Summary
- Capable of 100% duty cycle operation for low dropout performance
- Integrated enable control feature for power management
- Fixed internal switching frequency simplifies external component selection
Applications
- Battery-powered portable electronic devices
- General purpose step-down voltage regulation
- Embedded systems requiring stable low-voltage rails
Procurement Notes
Verify the specific suffix codes against the official datasheet to confirm pinout compatibility and electrical specifications. Ensure the ordering information matches the exact manufacturer part number to avoid functional discrepancies. Confirm RoHS compliance status if required by your manufacturing standards.
Selection Notes
Select this controller when a fixed 60 kHz switching frequency is acceptable for the application. It is suitable for designs where external synchronization is not required. Consider the 2.5 V to 10 V supply range and the SOT-23-5 package size during PCB layout planning.
Part Context
This component belongs to the S-8521 series of buck switching controllers from ABLIC. The series is designed for cost-effective power management solutions using minimal external components. It serves as a non-synchronous alternative to more complex integrated regulators.
FAQ
Is the S-8521C16MC-BTBT2U a synchronous rectifier?
No, it is a non-synchronous controller that requires external MOSFETs for the high-side and low-side switching functions.
What is the fixed switching frequency of this IC?
The device operates at a fixed switching frequency of 60 kHz.
