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AOZ1081AI
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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM 1.8A 8SOIC
- Series：EZBuck™
- Mfr：Alpha & Omega Semiconductor Inc.
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：Step-Down (Buck)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：16V
- Voltage - Output：-
- Current - Output / Channel：1.8A
- Frequency：1MHz
- Dimming：PWM
- Applications：Lighting
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The AOZ1081AI is a high-efficiency DC-DC step-down (buck) regulator IC from Alpha & Omega Semiconductor, designed for lighting applications. It delivers a fixed output current of 1.8A with an internal switching frequency of 1MHz. The device operates within an input voltage range of 4.5V to 16V and provides an adjustable output voltage from 0.25V to 15V. It supports PWM dimming control and is housed in an 8-SOIC package.
Feature Summary
- Integrated 1.8A high-output current capability for direct LED driving
- Fixed 1MHz switching frequency enables compact external component sizing
- Supports PWM dimming for precise brightness control
- Adjustable output voltage range accommodates various LED string configurations
Applications
- LED lighting systems
- General-purpose DC-DC step-down regulation
- PWM dimmable light sources
Procurement Notes
Verify the specific suffix 'AI' corresponds to the required temperature grade and packaging variant. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Check for active obsolescence notices or lifecycle changes directly from Alpha & Omega Semiconductor to ensure long-term supply availability.
Selection Notes
Select this component when a constant current buck regulator is required for LED loads. The 1.8A limit defines the maximum drive capability. Ensure the input voltage stays within 4.5V–16V. The 1MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify thermal management requirements for the SO-8 package under full load conditions.
Part Context
This part belongs to the EZBuck family of power management ICs from Alpha & Omega Semiconductor. These devices are engineered for high efficiency in portable and general lighting applications. The series emphasizes simplified design through integrated power switches and fixed frequency operation, reducing the need for complex external compensation networks.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source data. Consult official distributor databases or manufacturer cross-reference tools for verified equivalents.
