S-8591AB-S8T1U7

Voltage Regulators - DC DC Switching Regulators Overview

The S-8591AB-S8T1U7 is a switching voltage regulator from the S-8590/91 series manufactured by ABLIC. It is classified as a PMIC - Power Management IC and utilizes a Buck topology for step-down conversion. The device operates within an input voltage range of 2.2 V to 5.5 V and provides a fixed output voltage of 3.3 V with a maximum output current of 200 mA. It features a switching frequency of 1 MHz and includes a shutdown function for power management. The component is housed in an SNT-A-6 package, supports surface mount installation, and operates across a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a synchronous buck converter topology for efficient DC-DC step-down regulation.
• Incorporates a dedicated shutdown pin to control operational states and reduce standby consumption.
• Utilizes constant on-time (COT) control architecture to ensure stable transient response.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring low-profile power regulation
• Battery-powered systems utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded circuits needing isolated 3.3V logic supply rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix codes against official documentation to confirm exact electrical parameters and packaging configurations. Confirm RoHS compliance status and environmental declarations prior to integration. Ensure that the selected reel quantity aligns with manufacturing requirements and storage conditions. Cross-reference the manufacturer part number with authorized distributor listings to validate authenticity and traceability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for stepping down voltages between 2.2 V and 5.5 V to a fixed 3.3 V level. The SNT-A-6 package is suitable for space-constrained designs. Consider the 1 MHz switching frequency for balancing component size and efficiency. Verify that the 200 mA output capability meets the load requirements of the target application circuit.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the S-8590/91 series of switching regulators designed for portable applications. It shares the SNT-A-6 footprint with other variants in the family but differs in fixed output voltage settings. The series is characterized by high efficiency and small external component counts, targeting mobile and battery-operated electronics where board space is limited.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult official substitution lists for compatible parts within the S-8590/91 series. Verify pin compatibility and thermal performance before replacing. No direct public substitute part numbers are confirmed for this specific model variant.