S-8351B33MA-J4ST2G

Voltage Regulators - DC DC Switching Regulators Overview

The S-8351B33MA-J4ST2G is a fixed-output step-up switching regulator IC manufactured by ABLIC Inc. It operates with an input voltage range of 0.9 V to 10 V and provides a fixed output voltage of 3.3 V. The device supports a maximum output current of 300 mA and features a switching frequency of 100 kHz. It utilizes PFM control for high efficiency at light loads, maintaining a low quiescent current of 23.2 uA. The component is housed in a compact SC-74A (SOT-753) surface-mount package and is rated for operation within a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a power MOSFET and control circuitry into a single compact package for simplified design.
• Employs Pulse Frequency Modulation (PFM) control to maximize energy efficiency during light-load conditions.
• Includes built-in protection mechanisms against overcurrent and thermal overload to ensure operational safety.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered electronic devices requiring efficient voltage boosting
• Smart home appliances and IoT sensors utilizing coin cell or single-cell lithium batteries
• Industrial handheld instruments and measurement equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix J4ST2G to confirm the exact tape-and-reel packaging quantity and marking code required for your assembly line. Confirm RoHS compliance status and lead times directly with authorized distributors, as manufacturing schedules may vary. Ensure that the SC-74A footprint matches your PCB layout specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model when a fixed 3.3 V output is required from a single-cell battery source up to 10 V input. The 300 mA current capability suits moderate load applications, while the low quiescent current extends battery life in standby modes. Consider the S-8351 series if PFM efficiency is prioritized over the tighter ripple performance offered by PWM variants.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the S-8351 series of step-up switching regulators designed for portable applications. The series offers various output voltages and packages, allowing designers to optimize space and performance. The S-8351B33MA variant specifically targets cost-sensitive designs requiring reliable boost conversion without external feedback resistors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include other S-8351 series parts with identical pinouts and electrical characteristics but different output voltages or packages, such as S-8351A33MC-J2ST2U. Verify that substitute components maintain the same 300 mA output current and 100 kHz switching frequency to ensure circuit compatibility.