Sn51dp Datasheet Pdf -

: The GATE pin (Pin 10) drives an external transistor. If this transistor shorts out, the driver IC will fail to spin up the boost stage, leading to dark screens.

| Pin No. | Name | Description | |---------|-------------|----------------------------------------------| | 1 | IN 1 | Input channel 1 | | 2 | IN 2 | Input channel 2 | | 3 | IN 3 | Input channel 3 | | 4 | IN 4 | Input channel 4 | | 5 | IN 5 | Input channel 5 | | 6 | IN 6 | Input channel 6 | | 7 | IN 7 | Input channel 7 | | 8 | GND | Ground (common for inputs and logic) | | 9 | COM | Common free-wheeling diode cathode (VCC for inductive loads) | | 10 | OUT 7 | Output channel 7 (open collector) | | 11 | OUT 6 | Output channel 6 | | 12 | OUT 5 | Output channel 5 | | 13 | OUT 4 | Output channel 4 | | 14 | OUT 3 | Output channel 3 | | 15 | OUT 2 | Output channel 2 | | 16 | OUT 1 | Output channel 1 |

: Solder a 10kΩ resistor directly from Pin 9 (OVP) to GND (Pin 4) .

When downloading, verify the revision date. Older datasheets may have incorrect thermal data or missing safety information. sn51dp datasheet pdf

Even with the , issues can arise. Here’s a quick troubleshooting guide:

A common technique described in technical forums is to connect a 10K Ohm resistor from Pin 9 to Ground (GND). This disables the OVP/fault detection and forces the IC to operate, allowing technicians to check if the backlight illuminates.

To diagnose whether the root cause is a faulty driver IC or a single burned-out LED bulb within the screen panel, repair professionals often use a temporary bypass maneuver. : The GATE pin (Pin 10) drives an external transistor

Used extensively as the driver cornerstone in budget-to-midrange 32-inch to 55-inch LED TVs .

The SN51DP is suitable for a wide range of applications, including:

+----+---*---+----+ VIN | 1 | | 10 | DIM GATE | 2 | | 9 | GATE OVP / Prot O GATE| 3 | | 8 | COMP GND | 4 | | 7 | CS FB | 5 | | 6 | ISET / REF +----+-------+----+ LED driver IC replacement. Even with the , issues can arise

What specific are you observing (e.g., total black screen, backlight flashing once, or a clicking noise)?

Direct matching functional identifier using the exact same SSOP-10 frame.

If the PDF is only 2 pages or appears to be a scan of a napkin, discard it.

| Feature | SN51DP | ULN2003A | ULN2803A | |-----------------------|-----------------|-----------------|-----------------| | Number of channels | 7 | 7 | 8 | | Output voltage max | 50V (or 100V) | 50V | 50V | | Output current (cont.)| 500 mA | 500 mA | 500 mA | | Input compatibility | TTL/CMOS (3-24V)| TTL/CMOS (3-5V) | TTL/CMOS (3-5V) | | Internal base resistor| Yes (2.7k) | Yes (2.7k) | Yes (2.7k) | | Package | 16-pin DIP | 16-pin DIP/SOIC | 18-pin DIP | | Clamp diodes | Yes | Yes | Yes |