S-8521D28MC-BXNT2G

$0.43

Description：IC REG CTRLR BUCK SOT23-5
Series：-
Mfr：ABLIC Inc.
Package：Tape & Reel (TR)

SKU:06cc7168a1e1 Category: DC DC Switching Controllers Brand: ABLIC Inc.

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Product introduction

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

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S-8521D28MC-BXNT2G

Overview

The S-8521D28MC-BXNT2G is a CMOS step-down switching regulator controller from the S-8520/8521 series, manufactured by ABLIC Inc. It utilizes PWM/PFM switching control to achieve high efficiency across varying load conditions. The device operates with a supply voltage range of 2.5 V to 16 V and features a maximum switching frequency of 60 kHz. It provides a maximum duty ratio of 100% and includes an enable control feature. The component is housed in a compact SC-74A (SOT-753) surface-mount package and is rated for operation within a temperature range of -40°C to +85°C.

Feature Summary

Supports automatic switching between PWM and PFM control modes to maintain high efficiency under light loads
Features a soft-start circuit to prevent output voltage overshoot during startup
Capable of linear duty ratio variation from 0% to 100% for low-ripple power delivery

Applications

Step-down DC-DC converter designs requiring external power MOSFETs
Battery-powered portable electronic devices
Industrial equipment power management systems

Procurement Notes

Verify the specific suffix BXNT2G against official ABLIC documentation to confirm exact electrical parameters and marking codes. Confirm RoHS compliance status and check for any recent product change notices or design specification updates prior to finalizing procurement orders.

Selection Notes

Select this component when designing buck converters that require flexible control mode switching for optimal efficiency. Ensure the external circuit supports the 2.5 V to 16 V input range and verify that the SOT-753 package dimensions fit the target PCB layout constraints.

Part Context

This part belongs to the S-8521 series of switching regulator controllers, which are designed for high-efficiency power conversion. It complements the S-8520 series by offering dual-mode control capabilities, making it suitable for applications where load conditions vary significantly between standby and active states.