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Product Detailed Parameters
- Description：IC LED DRIVER RGLTR 20MA 20VQFN
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：Switched Capacitor (Charge Pump)
- Internal Switch(s)：Yes
- Number of Outputs：6
- Voltage - Supply (Min)：2.8V
- Voltage - Supply (Max)：4.5V
- Voltage - Output：4.5V
- Current - Output / Channel：20mA
- Frequency：1.2MHz
- Dimming：-
- Applications：-
- Operating Temperature：-30°C ~ 80°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-VQFN
- Supplier Device Package：20-VQFN
- Grade：-
- Qualification：-
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Overview
The BH6943KN-E2 is a regulated LED driver IC from ROHM Semiconductor, designed for backlight applications. It operates on a supply voltage range of 2.8 V to 4.5 V and utilizes an internal charge pump architecture. The device provides a regulated output current of 20 mA and supports dimming control functions. It is housed in a compact 20-VQFN package suitable for surface-mount installation. The component is classified as End-of-Life (EOL) with discontinuance notifications issued by the manufacturer.
Feature Summary
- Integrated charge pump circuitry for efficient voltage boosting
- Regulated constant current output capability
- Supports external dimming control interfaces
Applications
- LCD panel backlighting systems
- Mobile device display drivers
- Portable electronic equipment illumination
Procurement Notes
This component has reached its end-of-life status, meaning it is obsolete and will no longer be manufactured by ROHM Semiconductor. Procurement is restricted to remaining stock or third-party distributors. Verify availability carefully, as supply is limited and subject to depletion. Ensure that any purchased units are genuine and stored according to moisture sensitivity guidelines prior to assembly.
Selection Notes
Engineers should consider this part only if existing designs require compatibility with legacy specifications. Due to the EOL status, alternative sourcing strategies must be evaluated. Review the complete datasheet for electrical characteristics and thermal requirements. Confirm that the 20-VQFN footprint matches the target PCB layout constraints before finalizing component selection.
Part Context
The BH6943KN-E2 belongs to the BH6942KN series family of LED lighting drivers. It shares architectural similarities with other members but offers specific current regulation features tailored for backlight applications. The product line focuses on low-voltage operation and integrated power management solutions for portable electronics.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Given the End-of-Life status, engineers must identify functional equivalents through independent cross-reference tools or contact the manufacturer directly for recommended alternatives.
