S-8358B23MC-NQIT2G

Overview

The S-8358B23MC-NQIT2G is a step-up switching regulator controller from the ABLIC S-8358 series. It operates with an input voltage range of 0.9V to 10V and delivers a fixed output voltage of 2.3V. The device features a low quiescent current of 25.9uA and supports both PWM and PFM modes for optimized efficiency. It utilizes a compact SOT-23-5 package, suitable for surface mount installation, and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates automatic switching between PWM and PFM control modes to maintain high conversion efficiency across varying load conditions.
• Incorporates a built-in oscillator and error amplifier to regulate the external power switch without requiring complex peripheral components.
• Features a dedicated enable pin that allows precise control over power consumption by shutting down the internal circuitry when inactive.

Applications

• Battery-powered portable electronic devices requiring extended operational time
• Low-power sensor nodes in IoT applications
• Mobile communication modules needing stable voltage regulation

Procurement Notes

Verify the specific suffix NQIT2G against the official ABLIC datasheet to confirm the exact output voltage and package variant. Ensure the ordering quantity aligns with manufacturer standard packaging requirements. Cross-reference the RoHS compliance status and lead times directly with authorized distributors prior to finalizing procurement orders.

Selection Notes

Select this component when a fixed 2.3V output is required from a single-cell lithium battery source. The low standby current makes it ideal for applications where minimizing leakage during sleep modes is critical. Verify that the external inductor and capacitor values match the recommended design guidelines for the 600kHz switching frequency.

Part Context

This part belongs to the S-8358 series of DC-DC controllers designed for space-constrained mobile applications. It complements other variants in the family that offer different fixed output voltages, allowing designers to standardize on a single controller architecture while adjusting output levels through part selection.

Replacement Considerations

Consider the S-8358F33MC-MKST2U or S-8358H23MC-NUIT2G as potential substitutes if output voltage compatibility or package availability differs. Verify electrical parameter equivalence before swapping parts in existing designs.

FAQ

What is the maximum operating frequency of the S-8358B23MC-NQIT2G?

The device operates at a fixed switching frequency of 600kHz.

Does the S-8358B23MC-NQIT2G support synchronous rectification?

No, this controller drives an external N-channel MOSFET and does not include an internal synchronous rectifier.