S-8357G33MC-MIST2U

Overview

The S-8357G33MC-MIST2U is a positive output step-up DC-DC switching controller IC manufactured by ABLIC Inc. It utilizes voltage-mode control with a maximum switching frequency of 345kHz and a maximum output current capability of 0.08A. The device operates within an input voltage range of 900mV to 10V and provides a fixed output voltage of 3.3V. It features a maximum duty cycle of 85% and lacks synchronous rectification or clock synchronization capabilities. The component is designed for surface mount installation in a SOT-23-5 package, ensuring compact integration into power management circuits.

Feature Summary

• Voltage-mode control architecture for stable step-up regulation
• Integrated boost topology for efficient DC-DC conversion
• Surface-mount design compatible with automated assembly processes

Applications

• Portable electronic devices requiring battery voltage boosting
• Low-power consumer electronics with limited space constraints
• General-purpose power management systems utilizing single-cell lithium batteries

Procurement Notes

Verify the specific suffix MIST2U against official ABLIC documentation to confirm package type and tape/reel specifications. Ensure compatibility with existing PCB footprint designs for the SOT-23-5 configuration. Cross-reference thermal requirements against system operating temperatures ranging from -40°C to +85°C. Confirm that the non-synchronous nature aligns with efficiency targets for the intended load profile.

Selection Notes

Select this component when a fixed 3.3V output is required from variable input sources between 0.9V and 10V. Consider the 345kHz switching frequency for balancing component size and efficiency. Evaluate the 0.08A current limit against peak load demands. The absence of synchronous rectification may impact efficiency at higher loads compared to synchronous alternatives.

Part Context

This part belongs to the S-8357 series of switching controllers from ABLIC Inc. The series focuses on compact, high-efficiency power solutions for portable applications. The S-8357G33MC variant specifically addresses fixed-voltage boost applications, distinguishing itself through its integrated voltage-mode control and small form factor suitable for modern miniaturized electronics.

Replacement Considerations

Direct substitutes include other ABLIC S-8357 series variants with matching output voltages and pin configurations. Verify electrical parameters such as switching frequency and current limits when considering cross-brand alternatives. Ensure the replacement supports the same SOT-23-5 package and operating temperature range.