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AOZ1282DI
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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.2A 8DFN
- Series：EZBuck™
- Mfr：Alpha & Omega Semiconductor Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.5V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：36V
- Current - Output：1.2A
- Frequency - Switching：450kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN-EP (2x2)
- Grade：-
- Qualification：-
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Overview
The AOZ1282DI is a synchronous buck switching regulator IC from the EZBuck series by Alpha & Omega Semiconductor. It operates with an input voltage range of 4.5V to 36V and provides a single adjustable output from 0.8V to 36V at up to 1.2A. The device integrates high-side and low-side power MOSFETs, eliminating the need for external Schottky diodes. It features a fixed 450kHz switching frequency and is housed in an 8-WFDFN package with an exposed pad for thermal management.
Feature Summary
- Integrated synchronous rectification with internal high-side and low-side MOSFETs
- Fixed 450kHz switching frequency for compact passive component selection
- Adjustable output voltage capability within specified limits
- Single positive output configuration
Applications
- Point-of-load regulation for embedded systems
- Battery-powered portable devices requiring efficient step-down conversion
- Industrial control modules with 5V or 12V distribution networks
- Communication equipment power supplies
Procurement Notes
Verify the specific suffix DI against official datasheets to confirm the 8-WFDFN package and pinout configuration. Confirm RoHS3 compliance status through current manufacturer documentation. Check for obsolescence notices or last-time buy notifications as product lifecycles may change. Ensure design-in compatibility with required input/output voltage ranges before procurement.
Selection Notes
Select this component when a simple, non-synchronous alternative is insufficient due to efficiency requirements. The integrated MOSFETs reduce external bill of materials compared to controllers requiring external diodes. Verify that the 1.2A load current meets application demands without exceeding thermal limits in the 8-DFN-EP package. Consider the 450kHz frequency for balancing size and efficiency.
Part Context
The AOZ1282DI belongs to the EZBuck family of simple buck regulators designed for cost-sensitive and space-constrained applications. It simplifies design by integrating power switches, unlike discrete solutions or controller-only ICs. This family targets general-purpose DC-DC conversion where moderate current and wide input ranges are required.
Replacement Considerations
Direct replacements include AOZ1282CI for identical performance in different packaging. For higher current needs, consider AOZ1212DI (3A) or AOZ6662DI (2A). Lower current options include AOZ1282CI-1/2 variants. Verify pinout and thermal characteristics when substituting.
