S-8357B54MC-NJNT2U

Overview

The S-8357B54MC-NJNT2U is a step-up switching controller manufactured by ABLIC Inc., designed for efficient voltage conversion in portable electronic applications. It operates within an input voltage range of 0.9 V to 10 V and provides a fixed output voltage of 5.4 V with a high accuracy of ±2.4%. The device integrates a power MOSFET and supports a maximum output current of 60 mA at the specified output voltage. It functions with a constant switching frequency of 300 kHz and features a maximum duty cycle of 78%. The component is housed in a compact SOT-23-5 package, suitable for surface-mount technology, and ensures reliable operation across a wide temperature range from -40°C to +85°C.

Feature Summary

• Integrates a power MOSFET and control circuitry for compact step-up voltage conversion
• Provides high-precision fixed output voltage regulation with ±2.4% accuracy
• Operates over a wide input voltage range starting from 0.9 V
• Features a constant 300 kHz switching frequency for stable performance

Applications

• Portable battery-powered devices requiring voltage boosting
• Low-voltage sensor interfaces needing regulated supply
• Embedded systems with single-cell lithium battery inputs
• Consumer electronics utilizing compact power management solutions

Procurement Notes

Verify the specific suffix NJNT against official ABLIC documentation to confirm tape-and-reel packaging and marking details. Ensure compatibility with standard SOT-23-5 footprint designs. Cross-reference the exact part number with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status through the manufacturer's latest environmental declarations before final procurement approval.

Selection Notes

Select this component when a fixed 5.4 V output is required from low-voltage sources. The 300 kHz frequency allows for smaller external inductors compared to lower-frequency alternatives. Verify that the load current does not exceed the 60 mA limit at the target output voltage. Consider thermal dissipation requirements given the small SOT-23-5 package size under continuous load conditions.

Part Context

This part belongs to the S-8357 series of step-up switching controllers from ABLIC. The series is characterized by integrated power switches and high efficiency in small packages. Variants within the series differ primarily by output voltage settings and package options. The S-8357 series targets applications requiring simple, cost-effective voltage regulation without complex external feedback networks.

Replacement Considerations

Direct replacements include other S-8357 variants with compatible output voltages such as S-8357B50MC or S-8357B33MC, provided the system design accommodates the voltage difference. Ensure pinout compatibility with the SOT-23-5 package. Verify that alternative parts meet the same input voltage range and switching frequency specifications.