S-8520F18MC-BNDT2U

Overview

The S-8520F18MC-BNDT2U is a step-down DC-DC switching controller manufactured by ABLIC Inc. It operates with a fixed switching frequency of 300kHz and supports a maximum duty cycle of 100%. The device accepts an input voltage range of 2.5V to 16V and provides a fixed output voltage of 1.8V. It utilizes a transistor driver output configuration without synchronous rectification. The component is housed in a compact SOT-23-5 package and is rated for an operating temperature range from -40°C to +85°C.

Feature Summary

• Supports 100% maximum duty cycle operation for low dropout performance
• Integrated enable control feature for power management
• Fixed 300kHz switching frequency for external component optimization

Applications

• Battery-powered portable electronic devices
• General-purpose step-down voltage regulation
• Embedded systems requiring stable 1.8V supply rails

Procurement Notes

Verify the specific suffix BNDT2U against official ABLIC documentation to confirm pinout, marking codes, and tape-and-reel specifications. Ensure compatibility with your PCB footprint for the SOT-23-5 package. Cross-reference with authorized distributors to validate current production status and lead times before finalizing procurement plans.

Selection Notes

Select this component when a fixed 1.8V output is required from a 2.5V to 16V input source. It is suitable for designs prioritizing simplicity over adjustable outputs or synchronous efficiency. Consider the 300kHz frequency for balancing inductor size and switching losses. Verify that the load current requirements do not exceed the internal switch capabilities defined in the datasheet.

Part Context

This part belongs to the S-8520 series of non-synchronous buck controllers. The series is designed for cost-effective power management solutions in consumer and industrial electronics. The S-8520 family offers various fixed output voltages and packaging options to suit different space and performance constraints within portable applications.

Replacement Considerations

Check for direct substitutes within the S-8520 series offering identical 1.8V output and SOT-23-5 packaging. Verify functional equivalence regarding switching frequency and input voltage ranges before substitution.