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Product Detailed Parameters
- Description：IC REG BCK BST 2.5V 450MA 10TDFN
- Series：-
- Mfr：ams-OSRAM USA INC.
- Package：Tape & Reel (TR)
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：1.8V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：450mA (Switch)
- Frequency - Switching：-
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：10-WFDFN Exposed Pad
- Supplier Device Package：10-TDFN (3x3)
- Grade：-
- Qualification：-
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Overview
The AS1331-BTDT-A25 is a synchronous buck-boost switching regulator manufactured by ams OSRAM. It provides a fixed output voltage of 2.5 V with a maximum output current capability of 300 mA. The device operates at a switching frequency of 500 kHz and supports both boost and buck topologies within a single integrated circuit. Designed for surface-mount installation, it utilizes a TDFN-10 package. The component functions reliably across an operating temperature range from -40°C to +85°C.
Feature Summary
- Integrated synchronous rectification for improved efficiency in buck and boost modes
- Fixed 2.5 V output configuration suitable for low-voltage digital loads
- Compact TDFN-10 surface-mount package design
Applications
- Portable electronic devices requiring stable 2.5 V power rails
- Battery-powered systems utilizing buck-boost topology for varying input voltages
- Embedded sensor modules needing regulated low-voltage supply
Procurement Notes
Verify the specific suffix 'A25' against official ams OSRAM documentation to confirm exact electrical tolerances and marking codes. Confirm availability status as distribution channels may list this part as obsolete or end-of-life. Ensure the TDFN-10 footprint matches your PCB layout requirements before finalizing procurement decisions.
Selection Notes
Select this component when a fixed 2.5 V output is required without external feedback resistors. The 300 mA current limit defines the maximum load capacity. Consider the 500 kHz switching frequency for inductor size trade-offs. Verify that the TDFN-10 package thermal characteristics meet your system's dissipation needs under full load conditions.
Part Context
This part belongs to the AS1331 series of synchronous buck-boost regulators from ams OSRAM. The series offers integrated solutions for managing battery voltage fluctuations in portable electronics. The BTDT suffix indicates the specific tape-and-reel packaging format and pin configuration variant within the broader product family.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult ams OSRAM technical support for direct replacements or cross-reference compatible synchronous buck-boost regulators with identical 2.5 V output and TDFN-10 packaging constraints.
