AUR9705AGH

Description：IC REG BUCK ADJ 1A TSOT23-5
Series：-
Mfr：Diodes Incorporated
Package：Tape & Reel (TR)

SKU:6515ee3503a2 Category: Voltage Regulators - DC DC Switching Regulators Brand: Diodes Incorporated

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ 1A TSOT23-5
Series：-
Mfr：Diodes Incorporated
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)：1V
Voltage - Output (Max)：3.3V
Current - Output：1A
Frequency - Switching：1.5MHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 80°C (TA)
Mounting Type：Surface Mount
Package / Case：SOT-23-5 Thin, TSOT-23-5
Supplier Device Package：TSOT-23-5
Grade：-
Qualification：-

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AUR9705AGH

Overview

The AUR9705AGH is a high-efficiency step-down DC-DC voltage converter manufactured by Diodes Incorporated. It utilizes a constant frequency, peak-current mode architecture with built-in synchronous power MOSFET switchers and internal compensators to minimize external component requirements. The device features an internal switching frequency of 1.5MHz, enabling the use of small surface mount inductors and capacitors. It offers adjustable output voltages ranging from 1V to 3.3V and delivers up to 1A output current. Input voltage operates between 2.5V and 5.5V. Key protection features include Soft Start (SS), Under Voltage Lock Out (UVLO), and Thermal Shutdown Detection (TSD).

Feature Summary

Automatically switches between normal PWM mode and LDO mode to optimize system power efficiency across varying load conditions.
Integrates synchronous power MOSFETs and internal compensators to reduce external part counts.
Includes built-in oscillator and timing capacitors for a fixed 1.5MHz switching frequency.

Applications

Portable electronic product implementations requiring compact passive components.
Systems demanding improved power efficiency under wide loading conditions.
Applications requiring reliable operation through integrated thermal and voltage protection mechanisms.

Procurement Notes

Verify component status as the AUR9705AGH is listed as obsolete and no longer manufactured. Confirm availability of approved substitutes such as the AP3428AWT-7 if sourcing new production units is required. Ensure compliance with RoHS3 specifications during procurement planning. Check datasheet revisions for any changes in pinout or electrical characteristics relative to replacement parts.

Selection Notes

Select this component for designs requiring a 1A buck converter with a 1.5MHz switching frequency in a TSOT-23-5 package. Consider the adjustable output range of 1V to 3.3V and input voltage window of 2.5V to 5.5V. Evaluate the automatic transition between PWM and LDO modes for efficiency needs. Note that the part is discontinued; alternative selection must account for form-fit-function compatibility with recommended replacements.

Part Context

The AUR9705AGH belongs to the AUR9705 family of high-efficiency step-down DC-DC converters. This series is characterized by its peak-current mode control and integrated synchronous rectification. The AGH suffix specifically denotes the TSOT-23-5 package variant. The family supports adjustable outputs and includes protections like UVLO and TSD, targeting portable applications where space and efficiency are critical constraints.

Replacement Considerations

The AP3428AWT-7 is identified as a similar substitute part number available from Diodes Incorporated. Verify electrical parameter alignment and pin compatibility before implementation.