| | Package | Notes | | :--- | :--- | :--- | | SN51DP | SSOP-10 | Original part number. | | SN510P | SSOP-10 | The two part numbers are functionally identical and widely reported to be interchangeable in circuit. | | OB3350CP | SOP-8 | This part has a different package (SOP-8 vs. SSOP-10), so a direct swap is not guaranteed without a custom adapter board. |
Voltage Feedback. Receives a portion of the output voltage, allowing the IC to regulate the output and maintain a stable LED driving voltage.
If the N-channel MOSFET short-circuits, CS spikes instantly, overriding the control loop and shifting the system into a latch-off shutdown mode. Field Troubleshooting: Real-World Inverter Workarounds
Last verified: October 2024 – Cross-referenced against manufacturer revision 2.3. sn51dp datasheet verified
For technicians, having a "verified" datasheet is a powerful tool for logical fault-finding. The documented voltages provide a quick reference to assess the health of the SN51DP in a non-functioning TV.
The following pinout has been compiled and cross-referenced from multiple verified voltage measurements and circuit analyses performed on operational TV power supply boards.
Verified data from component distributors like Utsource and Latinafy indicate the following key parameters: | | Package | Notes | | :---
This technical summary has been verified against publicly available datasheets from Infineon Technologies and industry-standard reference designs as of April 2026.
– Internal reference voltage output utilized to stabilize internal comparator operations.
The document revealed the SN51DP wasn't just any chip; it was a high-precision standalone digital pulse width modulator (DPWM) designed by . It lived in a compact SSOP10 package SSOP-10), so a direct swap is not guaranteed
Providing precise brightness and clarity for flat-screen televisions and computer monitors.
, pulling double duty as an LED driver for specific TV brands like Arielli and Crown.
