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Product Detailed Parameters
- Description：IC LED DRIVER LINEAR 400MA 24QFN
- Series：-
- Mfr：ams-OSRAM USA INC.
- Package：Tape & Reel (TR)
- Type：Linear
- Topology：-
- Internal Switch(s)：Yes
- Number of Outputs：4
- Voltage - Supply (Min)：-
- Voltage - Supply (Max)：-
- Voltage - Output：15V
- Current - Output / Channel：400mA
- Frequency：-
- Dimming：-
- Applications：Backlight, Lighting
- Operating Temperature：-20°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 AS3691B-ZQFP is a linear LED driver IC manufactured by ams OSRAM, designed for backlight and lighting applications. It features four independent outputs capable of delivering up to 400mA per channel. The device operates with an output voltage of 15V and includes internal switching capabilities. It is housed in a 24-QFN (4x4) package with exposed pad for surface mount installation. The component supports linear dimming control and functions within a junction temperature range of -20°C to 85°C.
Feature Summary
- Four-channel linear current source architecture for precise LED regulation
- Integrated internal switch design simplifying circuit topology
- Supports linear dimming control for brightness adjustment
Applications
- LED backlighting systems
- General solid-state lighting fixtures
- RGB LED color mixing modules
Procurement Notes
Verify component status as the AS3691B-ZQFP is listed as obsolete or discontinued by major distributors. Confirm availability through authorized channels or secondary markets if sourcing is required. Check RoHS compliance documentation and moisture sensitivity level (MSL 3) handling requirements during storage and assembly processes.
Selection Notes
Select this component for designs requiring multi-channel LED driving with linear control simplicity. Ensure thermal management strategies accommodate the QFN package dissipation characteristics. Verify that the 15V output voltage limit aligns with the series forward voltage requirements of the target LED array configuration.
Part Context
This part belongs to the AS3691 family of LED drivers from ams OSRAM, which includes variants like the AS3691A and AS3691B. These devices are engineered for high-efficiency lighting solutions, offering integrated power management features suitable for compact electronic designs where space constraints and thermal performance are critical factors.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Consider evaluating other models within the AS3691 family or consulting manufacturer resources for direct replacements.
