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Product Detailed Parameters
- Description：IC LED DRIVER LINEAR 40MA 24QFN
- Series：-
- Mfr：ams-OSRAM USA INC.
- Package：Tape & Reel (TR)
- Type：Linear
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：12
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：3.6V
- Voltage - Output：30V
- Current - Output / Channel：40mA
- Frequency：-
- Dimming：-
- Applications：Backlight, Signage
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：24-VFQFN Exposed Pad
- Supplier Device Package：24-QFN (4x4)
- Grade：-
- Qualification：-
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Overview
The AS1122B-BQFM is a linear LED driver IC manufactured by ams OSRAM AG, designed for high-precision lighting control. It features 12 independent output channels capable of delivering up to 40mA per channel. The device operates within a supply voltage range of 2.7V to 3.6V and supports an output voltage of up to 30V. Packaged in a compact 24-QFN (4x4) surface-mount format with exposed pads, it integrates internal switches for direct LED connection. The component is rated for operation between -40°C and +85°C ambient temperature.
Feature Summary
- Provides 12 individually controllable linear dimming outputs for precise current regulation
- Integrates internal power switches to simplify circuit design and reduce external component count
- Supports wide input voltage range from 2.7V to 3.6V for flexible power supply integration
Applications
- LED backlighting systems
- Digital signage displays
Procurement Notes
Verify the specific suffix BQFM against the manufacturer's latest datasheet to confirm package type and tape-and-reel specifications. Confirm end-of-life status as distribution records indicate this part may be discontinued. Ensure compatibility with existing PCB footprints for the 24-QFN package before finalizing procurement plans.
Selection Notes
Select this component when designing circuits requiring multiple independently controlled LED channels with linear dimming capabilities. It is suitable for applications where low noise and high precision are prioritized over efficiency, given its linear topology. Ensure the total load current across all 12 channels remains within the thermal limits of the 24-QFN package.
Part Context
This part belongs to the AS1122 family of LED drivers from ams OSRAM. These devices are engineered for multi-channel lighting applications requiring synchronized control. The AS1122B variant specifically offers enhanced performance characteristics compared to earlier iterations, maintaining compatibility with standard I2C or SPI interfaces for digital control.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference options directly with ams OSRAM technical support due to the discontinued status.
