FT441AA

$0.14

Description：IC REG BUCK ADJ 900MA SOT23-5
Series：-
Mfr：Fremont Micro Devices Ltd
Package：Tape & Reel (TR)

SKU:cf09ce9bed45 Category: Voltage Regulators - DC DC Switching Regulators Brand: Fremont Micro Devices Ltd

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ 900MA SOT23-5
Series：-
Mfr：Fremont Micro Devices Ltd
Package：Tape & Reel (TR)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：2.5V
Voltage - Input (Max)：5.5V
Voltage - Output (Min/Fixed)：0.6V
Voltage - Output (Max)：5.5V
Current - Output：900mA
Frequency - Switching：1.5MHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：SC-74A, SOT-753
Supplier Device Package：SOT-23-5
Grade：-
Qualification：-

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FT441AA

Overview

The FT441AA is an adjustable synchronous buck DC-DC switching regulator manufactured by Fremont Micro Devices Ltd. It delivers a maximum output current of 900mA with a maximum output voltage of 5.5V. The device operates at a fixed switching frequency of 1.5MHz, enabling the use of compact passive components. It is housed in a SOT23-5 package and supports an operating temperature range from -40°C to +85°C (TA). This integrated circuit functions as a step-down converter suitable for space-constrained power management applications.

Feature Summary

Synchronous rectification architecture for improved efficiency
Adjustable output voltage capability within specified limits
High-frequency switching operation reducing external component size

Applications

Portable electronic devices requiring efficient step-down conversion
Battery-powered systems needing regulated low-voltage rails
Embedded circuits utilizing space-saving surface-mount packages

Procurement Notes

Verify component authenticity through authorized channels due to obsolete status. Confirm substitute part availability if original supply is unavailable. Ensure storage conditions meet manufacturer specifications to prevent degradation. Validate pin compatibility when integrating replacement regulators into existing designs. Request test reports or quality certifications from suppliers to guarantee performance reliability.

Selection Notes

Consider the 900mA output limit and 5.5V maximum voltage when designing load requirements. Evaluate thermal performance within the -40°C to +85°C operational range. Assess PCB layout constraints imposed by the SOT23-5 footprint. Compare efficiency characteristics against alternative regulators for specific duty cycles. Verify input voltage ranges align with system power sources.

Part Context

This component belongs to the PMIC Voltage Regulators - DC DC Switching category. It serves as a power management solution for converting higher input voltages to lower, stable output levels. The series typically targets consumer electronics and industrial applications requiring compact, efficient power regulation. Related parts may offer different current ratings or fixed voltage outputs.