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Product Detailed Parameters
- Description：IC REG BUCK BST ADJ 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：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：1.8V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：3.3V
- 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-25 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 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. It functions reliably across an operating temperature range from -40°C to +85°C. The component is housed in a TDFN-10 surface-mount package, designed for compact power management applications requiring efficient voltage conversion.
Feature Summary
- Integrates synchronous buck and boost converter topologies into a single chip
- Features low quiescent current operation for enhanced energy efficiency
- Utilizes a compact TDFN-10 surface-mount package design
Applications
- Portable electronic devices requiring flexible input voltage ranges
- Battery-powered systems needing stable regulated output
- Compact consumer electronics with space-constrained PCB layouts
Procurement Notes
Verify the specific suffix (e.g., BTDT-25) against official datasheets to confirm exact output voltage and package variant. Confirm end-of-life status as distribution availability may be limited. Ensure compatibility with existing PCB footprints and thermal requirements before integration.
Selection Notes
Select this component when a single IC must handle both step-up and step-down voltage conversion efficiently. Consider the 300 mA output limit and 500 kHz switching frequency for filter component sizing. Verify that the fixed 2.5 V output meets system requirements or choose alternative suffixes if different voltages are needed.
Part Context
This part belongs to the AS1331 series of synchronous buck-boost regulators from ams OSRAM. These devices are engineered for portable applications where battery voltage varies significantly above and below the required load voltage. The series emphasizes high efficiency and small form factor solutions for modern mobile and wearable technology.
Replacement Considerations
Check for direct pin-compatible alternatives from ams OSRAM or other manufacturers offering similar buck-boost functionality. Verify that substitute parts match the 300 mA current rating, 500 kHz frequency, and TDFN-10 package dimensions to ensure seamless integration without redesigning the power stage.
