S-8357B50MC-NJJT2G

Overview

The S-8357B50MC-NJJT2G is a step-up switching regulator controller from ABLIC, designed for efficient power management in compact electronic systems. Operating with a fixed switching frequency of 300 kHz, this device regulates output voltage to 5.0 V with high precision. It supports an output current capability of up to 1 A and features a maximum duty cycle of 85%. The unit operates within a supply voltage range of 0.9 V to 10 V and maintains functionality across an extended temperature range from -40°C to +85°C. Packaged in a space-saving SOT-23-5 format, it integrates essential control logic for boost converter applications.

Feature Summary

• Integrated PWM control circuitry for efficient step-up voltage conversion
• Fixed 300 kHz switching frequency enables the use of small external components
• High output current capability supports demanding load requirements
• Compact SOT-23-5 package facilitates dense PCB layout designs

Applications

• Portable battery-powered consumer electronics
• Industrial sensor nodes requiring stable voltage rails
• Communication modules needing regulated power supplies
• Automotive infotainment system power distribution

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm exact electrical tolerances and packaging details. Ensure compatibility with your board's thermal design and input voltage constraints before finalizing orders. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Choose this component when a fixed 5.0 V output is required from variable or lower input sources. The 300 kHz frequency balances efficiency and component size effectively. Consider the 1 A output limit and operating temperature range to ensure suitability for the target environment and load profile.

Part Context

This model belongs to the S-8357 series of switching regulators by ABLIC Inc., which focuses on high-efficiency DC-DC converters. The series is characterized by its ability to drive external MOSFETs for boost topologies. It targets applications requiring reliable power regulation in limited space, leveraging ABLIC's expertise in analog semiconductor design for robust performance.

Replacement Considerations

Check ABLIC datasheets for direct pin-compatible alternatives within the S-8357 family. Verify that substitute parts match the 300 kHz frequency and 5.0 V output specification. Ensure any replacement maintains the same SOT-23-5 footprint and thermal characteristics.