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AOZ1280CI
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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.2A SOT23-6
- Series：EZBuck™
- Mfr：Alpha & Omega Semiconductor Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：26V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：26V
- Current - Output：1.2A
- Frequency - Switching：1.5MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-6
- Supplier Device Package：SOT-23-6
- Grade：-
- Qualification：-
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Overview
The AOZ1280CI is a synchronous step-down DC-DC converter from the EZBuck series, manufactured by Alpha & Omega Semiconductor Inc. It operates with an input voltage range of 3V to 26V and provides an adjustable output voltage from 0.8V to 26V. The device delivers a continuous output current of 1.2A at a fixed switching frequency of 1.5MHz. Packaged in a compact SOT-23-6 surface-mount format, it supports operation across a temperature range of -40°C to 85°C.
Feature Summary
- Integrates high-side and low-side power MOSFETs for efficient synchronous rectification
- Supports analog dimming control via the EN pin for backlight applications
- Includes internal soft-start circuitry to limit inrush current during startup
Applications
- LCD panel backlight drivers
- Portable electronic devices requiring regulated power
- General-purpose point-of-load regulation
Procurement Notes
Verify component authenticity through authorized distribution channels due to potential counterfeit risks. Confirm package marking and datasheet revision match the specific order requirements. Check for RoHS compliance status as manufacturing processes may evolve. Ensure storage conditions adhere to moisture sensitivity level guidelines before reflow soldering.
Selection Notes
Select this regulator when a compact solution is needed for moderate current loads up to 1.2A. The 1.5MHz frequency allows for smaller external inductors and capacitors compared to lower-frequency alternatives. Verify that the required output voltage falls within the 0.8V to 26V adjustable range and that the input supply does not exceed 26V.
Part Context
This component belongs to the EZBuck family of simple buck regulators designed for cost-sensitive and space-constrained applications. The AOZ1280 variant specifically targets 1.2A load requirements, distinguishing it from higher-current siblings like the AOZ1212 or lower-current models. It utilizes standard external components for setting output voltage and frequency.
Replacement Considerations
Direct pin-compatible substitutes include the AOZ1282DI for similar current ratings. Other EZBuck series parts such as the AOZ1281 offer different current capabilities but share functional similarities. Verify thermal performance and component values when cross-referencing with alternative part numbers.
