S-8355Q51MC-OXKT2G

Overview

The S-8355Q51MC-OXKT2G is a step-up switching regulator controller manufactured by ABLIC Inc., designed for compact power management applications. It operates with a fixed switching frequency of 600 kHz and supports PWM control or switchable PWM/PFM modes to optimize efficiency across varying load conditions. The device features a wide input voltage range from 0.9V to 10V, allowing compatibility with single-cell lithium-ion batteries and other low-voltage sources. It provides a fixed output voltage of 5.1V and utilizes an SOT-23-5 package for space-constrained designs. The controller includes an enable function for power management and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Supports switchable PWM and PFM control modes for optimized efficiency
• Fixed 600 kHz switching frequency for reduced external component size
• Wide input voltage range compatible with single-cell battery systems
• Integrated enable pin for precise power control

Applications

• Portable electronic devices requiring compact power solutions
• Single-cell lithium-ion battery powered equipment
• Space-constrained consumer electronics
• IoT devices with limited power budgets

Procurement Notes

Verify the specific suffix OXKT2G against official ABLIC documentation to confirm package type and tape/reel specifications. Ensure the ordering quantity aligns with manufacturer minimum order requirements. Cross-reference the part number with authorized distributors to confirm authenticity and availability status prior to procurement.

Selection Notes

Select this component when a small footprint and high efficiency are required for boosting low input voltages. The switchable control mode allows design flexibility between noise-sensitive (PWM) and efficiency-critical (PFM) applications. Ensure the external inductor and diode ratings match the 600 kHz switching frequency and expected load current for stable operation.

Part Context

This part belongs to the S-8355 series of step-up switching regulator controllers from ABLIC. The series is characterized by its super-small package options and integrated control logic, targeting applications where board space is limited. The Q51 variant specifically denotes the fixed 5.1V output configuration within this family.

Replacement Considerations

Direct replacements must match the SOT-23-5 package, 600 kHz frequency, and 5.1V output. Verify pinout compatibility and control mode support before substitution. Consult ABLIC's official cross-reference guides for validated alternatives.