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Product Detailed Parameters
- Description：IC REG BUCK 1.2V/3.3V DL 12TDFN
- Series：-
- Mfr：ams-OSRAM USA INC.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：2
- Voltage - Input (Min)：2.7V
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：1.2V, 3.3V
- Voltage - Output (Max)：-
- Current - Output：500mA, 950mA
- Frequency - Switching：2MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：12-WFDFN Exposed Pad
- Supplier Device Package：12-TDFN (3x3)
- Grade：-
- Qualification：-
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Overview
The AS1348-BTDT3312 is a dual-output synchronous buck DC-DC switching regulator manufactured by ams OSRAM AG. It integrates two independent step-down converters within a compact 12-TDFN package featuring an exposed thermal pad. The device provides fixed output voltages of 1.2V and 3.3V, delivering maximum continuous currents of 500mA and 950mA respectively. It operates from an input voltage range up to 5.5V with a fixed switching frequency of 2MHz. Designed for surface-mount installation, the component supports an ambient operating temperature range from -40°C to +85°C.
Feature Summary
- Dual-channel synchronous rectification topology for efficient power conversion
- Fixed output voltage configuration eliminating external resistor programming
- Integrated thermal pad design facilitating heat dissipation in compact layouts
Applications
- Portable electronic devices requiring multiple low-voltage rails
- Embedded systems utilizing single-supply architectures
- Battery-powered equipment needing efficient step-down regulation
Procurement Notes
Verify component authenticity through authorized distribution channels due to discontinued status. Confirm package integrity upon receipt as the TDFN housing requires careful handling. Cross-reference datasheet revisions to ensure compatibility with existing design specifications. Validate supplier documentation against official manufacturer records to prevent counterfeit infiltration during procurement processes.
Selection Notes
Evaluate current demands against the 500mA and 950mA limits for the respective outputs. Ensure input supply remains within the 5.5V maximum rating. Consider thermal management requirements given the exposed pad construction. Verify that the 2MHz switching frequency aligns with electromagnetic interference constraints. Confirm availability status as the part is marked discontinued in current catalogs.
Part Context
This component belongs to the AS1348 series of dual-output synchronous buck regulators. It shares architectural similarities with other single or multi-phase PMIC solutions but distinguishes itself through fixed voltage outputs. The series targets applications prioritizing board space efficiency over programmable flexibility. Related parts may offer adjustable outputs or higher current capacities depending on specific system requirements.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult official manufacturer resources for legacy product transitions or equivalent alternatives.
