(often listed as ON-BRIG), it is a common component in brands like Arielli, Crown, and Felix. Key Technical Specifications Manufacturer On-Bright (ON-BRIG) Package Type MSOP10 / SSOP-10 Supply Voltage (VIN) 3.5V to 7V Operating Temp -20°C to 130°C Application LED TV Backlight Driver Equivalent/Analog SN510P, OB3350CP (SOP-8) Pin Configuration (Verified Pinout) Based on verified schematics from Electronica Max and other technical sources: Pin 1 (VIN): Input Supply Voltage. Pin 2 (DIM): PWM Dimming Control input for brightness adjustment. Pin 3 (OVP): Over-Voltage Protection monitoring point. Pin 4 (GND): Ground connection. Pin 5 (CS): Current Sense; monitors current through the LED string. Pin 6 (REF): Internal Reference voltage. Pin 7 (FB): Feedback input to maintain constant LED current. Pin 8 (COMP): Compensation pin for stability control. Pin 9 (GATE OVP/GATE-): Gate driver for protection or secondary MOSFET. Pin 10 (GATE): Main output driver for the power MOSFET. Practical Repair Tip: Bypassing Protection
It is important to note that the SN51DP, like many specialized components, is not exclusively manufactured by a single company. The "verified datasheet" must be flexible, as different manufacturers may produce pin-compatible ICs with slightly different specifications. Commonly associated brands found in supply chains include .
If you are currently troubleshooting a specific mainboard, feel free to tell me: The of the television or display board
In scenarios where the SN51DP is unavailable, the OB3350CP is sometimes used as a functional replacement in LED driver circuits. sn51dp datasheet verified
Verified units and detailed datasheets are typically accessed through specialized electronic component distributors or retailers such as: SN51DP EMI | IC-Components
The "verified" status of the datasheet was the key. It confirmed a critical detail: pin 9 was the Over-Voltage Protection (OVP). Earlier "unverified" sketches suggested bypassing it with a simple jumper, but the verified data warned that the chip needed a precise 10K resistor to ground on that pin to properly clear a protection lock.
ESD Protection, On-chip Regulator, 1μ A Shutdown Package: SOP-10 (often listed as ON-BRIG), it is a common
The most critical node for EMI and thermal management. Ensure the trace is short and wide.
to calculate the required inductance based on your desired ripple current ( ΔILcap delta cap I sub cap L
Supports both digital (PWM) and analog dimming interfaces for precise brightness control. Pin 3 (OVP): Over-Voltage Protection monitoring point
Pay close attention to these pins during your schematic review:
: Supports systems down to 2.7V , commonly used in 3.3V or 12V supply environments. Switching Frequency : Typically 1.2MHz . Reference Voltage : 0.6V typical.
Add a 0.1µF X-class capacitor across AC input lines for noise suppression.
+5V | 330Ω | +5V control ----[Pin1] SN51DP [Pin3]---- AC Load (Heater) GND control ----[Pin2] [Pin4]---- AC Neutral | AC Live