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Product Detailed Parameters
- Description：IC REG BCK BST 3.3V 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)：3.3V
- 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-33-6K is a synchronous buck-boost switching regulator manufactured by ams OSRAM. It provides a fixed positive output voltage of 3.3V with a switch current rating of 450mA. The device operates within an input voltage range up to 5.5V and features a switching frequency of 500kHz. Packaged in a 10-WFDFN exposed pad format, it supports surface-mount installation. The component functions as a DC-DC converter suitable for applications requiring efficient power management across varying input conditions.
Feature Summary
- Synchronous buck-boost topology enables stable regulation across input voltages both above and below the output level
- Fixed 3.3V output configuration simplifies design integration for standard logic supply rails
- Compact 10-WFDFN package facilitates space-constrained surface-mount PCB layouts
Applications
- Portable consumer electronics requiring efficient battery-powered operation
- Smart home devices utilizing single-cell lithium-ion power sources
- Industrial sensor nodes needing regulated voltage from fluctuating inputs
Procurement Notes
Verify the specific suffix '6K' indicates tape-and-reel packaging quantity when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to implementation. Ensure the 10-WFDFN footprint matches your PCB design constraints. Check for end-of-life notifications or alternative recommendations directly from ams OSRAM channels.
Selection Notes
Select this part when a fixed 3.3V output is required from a variable input source ranging near or below that voltage. The 450mA switch current capability suits moderate load applications. Consider the 500kHz switching frequency for balancing efficiency and external component size. The synchronous design offers higher efficiency compared to non-synchronous alternatives in similar form factors.
Part Context
This component belongs to the AS1331 series of synchronous buck-boost regulators from ams OSRAM. The series includes variants with different fixed output voltages such as 2.5V and 3.3V. These regulators are designed for portable applications where input voltage may vary significantly relative to the required output level, providing flexibility in system power architecture.
Replacement Considerations
Consult ams OSRAM for direct cross-reference options if this specific reel variant is unavailable. Other AS1331 family members share similar pinouts but differ in output voltage settings. Verify thermal performance and current limits match your application requirements before substituting.
