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Product Detailed Parameters
- Description：IC LED DRIVER LINEAR 400MA 24QFN
- Series：-
- Mfr：ams-OSRAM USA INC.
- Package：Tray
- 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 AS3691A-ZQFT is an LED lighting driver IC manufactured by ams OSRAM. It features four independent current sources designed specifically for RGB LED applications. The device provides a fixed output current of 400 mA per channel. It is housed in a QFN package and supports surface-mount technology. This component serves as a dedicated driver for high-precision color control in lighting systems.
Feature Summary
- Provides four independent constant current sources optimized for RGB LED configurations
- Integrates built-in safety mechanisms including thermal shutdown and open/short LED detection
- Supports local dimming and scan dimming capabilities through programmable parameters
- Enables synchronization with external clocks for precise timing control
Applications
- RGB LED backlighting for LCD-TV sets
- High-precision color control in professional lighting panels
- Local dimming zones in advanced display backlights
Procurement Notes
Verify the specific suffix ZQFT to confirm the package type and tape-and-reel configuration. Confirm RoHS compliance status as required by your assembly process. Check the lifecycle status, as this part may be discontinued or subject to limited supply. Ensure the operating temperature range matches your environmental design requirements before finalizing procurement.
Selection Notes
Select this component when four independent 400 mA channels are required for RGB LED driving. It is suitable for designs needing integrated PWM generation and synchronization inputs. Consider alternative models if higher current per channel or different channel counts are necessary. Verify interface compatibility with your system's control logic.
Part Context
This IC belongs to the AS3691 series of LED drivers from ams OSRAM. It is part of a family of solutions for LCD backlight applications. Similar parts in the lineup include the AS3693A, which offers more channels but lower current per channel. The series focuses on high precision and safety features for display backlights.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer for end-of-life notifications or recommended alternatives if this part is discontinued.
