The SN51DP is manufactured by various suppliers, with being a primary source for the chip. However, due to its application in widely manufactured consumer electronics, the IC is distributed by multiple global semiconductor vendors. The chip is typically offered in a 10-pin TSSOP (Thin Shrink Small Outline Package) or 10-pin SSOP (Shrink Small Outline Package) form factor, both of which are surface-mount packages designed for compact, automated assembly lines. The "MSOP-10" or "SSOP-10" designation is critical for engineers designing printed circuit boards (PCBs), as it dictates the exact land pattern and soldering profile required during manufacturing.
"To extend LED lifespan, some technicians modify the backlight current by increasing the low-ohm sense resistors in the LED current path. This reduces the current setpoint and lowers LED operating temperature."
The SN51DP is housed in a (Shrink Small Outline Package) or TSSOP-10. This compact surface-mount package is ideal for the limited real estate on modern TV power supply boards. It is a small, black, rectangular chip with ten tiny pins soldered directly onto the PCB. When sourcing the SN51DP, you may also find it labeled under the alternate ordering code SN510P , which is the exact same chip.
The SN51DP datasheet provides a comprehensive list of specifications that define the device's performance and capabilities. Some of the key specifications include: sn51dp datasheet
Typically available in specialized electronics shops or through suppliers specializing in LED TV repairs. If you'd like, I can: Find specific repair kits that include this IC. Direct you to a distributor to check current availability.
| Parameter | Symbol | Min | Typical | Max | Unit | Description | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Operating Supply Voltage | VDD | 1.6 | 3.3 | 5.5 | V | Logic supply for the IC's internal circuitry. | | Power Input Voltage | VIN | 4.5 | 12 | 28 | V | Input supply for the boost converter stage. | | Output Voltage | VOUT | 0.8 | - | 72 | V | Adjustable boosted output for LED strings (Max dependent on design). | | Max Load Current | ILoad | - | - | 20 | mA | Current per control channel (control side). | | Quiescent Current | IQ | - | 1.5 | - | μA | Current consumed by IC with no load (Standby). | | Operating Temp | Toper | -40 | - | 85 | °C | Functional temperature range of the device. | | Storage Temp | Tstg | -65 | - | 150 | °C | Non-operating storage temperature range. |
: Loop Compensation. Connects an external RC network to stabilize the internal error amplifier control loop. The SN51DP is manufactured by various suppliers, with
The SN51DP datasheet provides a detailed description of the device's architecture, functionality, and performance. Some of the key sections in the datasheet include:
– Internal voltage reference out / diagnostic bypass node.
Internal Reference Voltage. Provides a stable voltage output used as a baseline for internal comparator matching. The "MSOP-10" or "SSOP-10" designation is critical for
| Parameter | Value / Range | Remarks | |-----------|---------------|---------| | | DIP-6 (0.3" lead spacing) | Through-hole, also available in SMD (SN51DP-S) | | Input Diode Forward Current (IF) | 50 mA (max) | Typically driven at 5–20 mA | | Reverse Input Voltage | 6 V (max) | | | Output Blocking Voltage (VDRM) | 600 V (min) | Suitable for 110/230 VAC mains | | On-State Current (ITRMS) | 100 mA | Direct control only for tiny loads; usually drives a power triac | | Peak Surge Current (ITSM) | 1.2 A (non-repetitive) | | | Zero-Crossing Voltage | ±20 V (typical) | Activates within ~20V of AC zero crossing | | Isolation Voltage | 5000 Vrms (min) | Reinforced isolation | | Operating Temperature | -30°C to +100°C | |
Utilizing its DPWM capabilities for precise speed management. General PWM Systems:
and is often found on mainboards like the TP.S506.PB801 used in brands such as Arielli, Crown, and Hisense. NETASHOP.GR Technical Specifications Manufacturer Package Type MSOP-10 or SSOP-10 Supply Voltage ( cap V sub cap I cap N end-sub 3.5V to 7V Operating Temperature -20°C to 130°C Resolution Up to 8-bit programmable pulse width Dimensions 3.9mm (L) x 7.9mm (W) x 1.7mm (H) Key Features Integrated Power Management:
Dimming Control Input. It handles the PWM or analog signaling sent by the television mainboard to regulate the brightness level of the LED array.