Sn51dp Datasheet ⚡

The SN51DP is a power management IC primarily used as an LED backlight driver for liquid crystal display (LCD) televisions. Manufactured by On-Bright Electronics, it is commonly found in TV repair contexts, often replaced by or cross-referenced with the OB3350 CP driver IC. Key Technical Specifications Based on manufacturer data and technical listings features the following: Package Type: MSOP-10 (10-pin Surface Mount). Operating Voltage: Minimum 3.5V to Maximum 7V. Temperature Range: Operating from -20°C to 130°C.

Unfortunately, official datasheets for the SN51DP can be elusive due to its age and specific manufacturing lineage (often associated with Sanken Electric Co., Ltd.). This article consolidates verified technical information, pinout configurations, electrical characteristics, typical application circuits, and practical tips for sourcing or substituting this component. sn51dp datasheet

Key Features

• Low Offset Voltage: Minimizes errors in precision applications.
• High Common-Mode Rejection Ratio (CMRR): Provides better noise rejection and higher accuracy.
• Wide Supply Voltage Range: Offers flexibility in design, accommodating various voltage requirements.
• ESD Protection: Enhanced electrostatic discharge protection for robustness.

• Absolute maximum ratings (clear).
• Electrical characteristics (graphical – IF vs trigger current, temperature effects).
• Zero-cross timing diagram (useful for timing-sensitive designs).
• Application notes (external triac, snubber design, PCB layout).
• Isolation and safety ratings (essential for regulatory approvals).

Conclusion

Package Information

Q5: What is the difference between SN51DP and SN51DP-H?

A: The "-H" suffix indicates a higher input voltage rating – typically 60V instead of 45V. All other parameters remain the same. The SN51DP is a power management IC primarily