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Product Detailed Parameters
- Description：IC LED DRIVER LINEAR 40MA 16DIP
- Series：-
- Mfr：NXP USA Inc.
- Package：Tube
- Type：Linear
- Topology：Shift Register
- Internal Switch(s)：Yes
- Number of Outputs：8
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：15V
- Voltage - Output：-
- Current - Output / Channel：40mA
- Frequency：28MHz
- Dimming：-
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：16-DIP (0.300", 7.62mm)
- Supplier Device Package：16-DIP
- Grade：-
- Qualification：-
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Overview
The HEF4794BP,112 is a linear LED driver IC manufactured by NXP USA Inc. It features an 8-output shift register topology with internal switches, designed for LED dimming applications. The device operates within a supply voltage range of 3V to 5.5V and supports a maximum output current of 40mA per channel. It is housed in a 16-DIP package and functions as a dedicated PMIC component for controlling LED arrays.
Feature Summary
- Integrates an 8-bit shift register for sequential control of LED outputs
- Provides linear current regulation for precise LED dimming capabilities
- Includes internal switching elements to simplify circuit design
Applications
- LED matrix display systems requiring individual segment control
- General-purpose LED lighting fixtures with dimming functionality
- Industrial indicator panels utilizing multiple LED channels
Procurement Notes
Verify the obsolete status of this component before integration into new designs. Confirm that the 16-DIP package aligns with existing PCB footprints. Ensure compatibility with the required 3V to 5.5V supply rails. Check for available alternative sources if long-term availability is a constraint for the production timeline.
Selection Notes
Select this component when an 8-channel linear driver with integrated shift register logic is required. It is suitable for applications needing 40mA constant current drive without external sensing resistors. Consider the DIP packaging constraints compared to surface-mount alternatives. Evaluate the operating temperature range against environmental conditions.
Part Context
This part belongs to the HEF series of logic and driver ICs from NXP. It serves as a specialized power management solution for LED control. The device combines digital shift register functionality with analog current regulation. It is distinct from standard logic gates by its focus on driving high-current loads directly.
Replacement Considerations
The datasheet indicates this product is obsolete. No specific public substitute part numbers are confirmed in the provided documentation. Engineers should consult NXP for current equivalent recommendations or evaluate generic 8-channel LED drivers with similar pinouts and electrical characteristics.
