S-8352A37MC-K2WT2U

Overview

The S-8352A37MC-K2WT2U is a positive output step-up DC-DC controller IC manufactured by ABLIC Inc. It operates with a fixed switching frequency of 100 kHz and utilizes PFM control for efficiency optimization. The device supports an input voltage range from 0.9 V to 10 V and provides a fixed output voltage of 3.7 V. Designed for surface-mount applications, it is housed in a compact SOT-23-5 package. The component functions within a temperature range of -40°C to +85°C and features a low quiescent current of 23.2 µA.

Feature Summary

• Integrates a transistor driver stage for external switch control in boost converter topologies
• Employs pulse frequency modulation (PFM) architecture to maintain high efficiency under light load conditions
• Includes an enable pin for precise power management and system-level sleep mode control

Applications

• Battery-powered portable electronic devices requiring efficient voltage boosting
• Low-power sensor nodes and IoT modules operating on single-cell lithium batteries
• Consumer electronics utilizing microcontrollers that require stable 3.7 V logic levels

Procurement Notes

Verify the complete part number including the suffix K2WT2U to ensure correct output voltage and packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Cross-reference the specific datasheet revision to validate electrical characteristics against design requirements.

Selection Notes

Select this component when a fixed 3.7 V output is required from a variable input source between 0.9 V and 10 V. The 100 kHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Ensure the external MOSFET selected can handle the peak currents generated by the controller's drive capability.

Part Context

This part belongs to the S-8352 series of switching controllers from ABLIC Inc., designed specifically for energy-efficient power management in portable applications. The series focuses on minimizing standby current while maintaining stable regulation for battery-operated systems.

Replacement Considerations

Direct substitutes include other ABLIC S-8352 variants with different output voltages or packages, such as S-8352C32UA-K6RT2G. Verify pin compatibility and thermal performance before substituting with non-ABLIC equivalents.