S-8355K40MC-NAZT2U

Overview

The S-8355K40MC-NAZT2U is a boost DC/DC switching controller IC from ABLIC Inc., designed for step-up voltage conversion. It operates with a fixed switching frequency of 100 kHz and supports PWM or switchable PWM/PFM control modes. The device accepts an input supply voltage range of 0.9 V to 10 V and provides a regulated positive output of 4.0 V. It features a transistor driver output stage and includes enable control functionality. The component is housed in a compact SOT-23-5 surface-mount package and is rated for operation within a temperature range of -40°C to +85°C.

Feature Summary

• Supports switchable PWM or PWM/PFM control modes for optimized efficiency across varying load conditions
• Integrates enable control functionality to manage power consumption during standby states
• Utilizes a super-small SOT-23-5 package design suitable for space-constrained applications

Applications

• Portable electronic devices requiring efficient step-up voltage regulation
• Battery-powered systems utilizing low-voltage input sources
• Embedded circuits needing compact power management solutions

Procurement Notes

Verify the specific suffix NAZT2U against the manufacturer's official datasheet to confirm pinout, marking codes, and environmental compliance status. Ensure compatibility with the target PCB footprint and thermal requirements before finalizing procurement orders.

Selection Notes

Select this component when a fixed 4.0 V output is required from a variable input source between 0.9 V and 10 V. Consider the 100 kHz switching frequency for filter component sizing and evaluate the need for PWM/PFM mode switching based on system efficiency targets.

Part Context

This part belongs to the S-8355 series of step-up converters manufactured by ABLIC Inc. The series is characterized by its small package size and integrated switching controller capabilities, targeting applications where board space and power efficiency are critical constraints.

Replacement Considerations

Direct substitutes include other S-8355 variants with different output voltages, such as S-8355Q15MC-OWAT2U (1.5 V output) or S-8355K40MC-NAZT2U equivalents. Verify pin compatibility and electrical specifications before substitution.