Sn51dp Datasheet Pdf %21%21exclusive%21%21 -

| Parameter | Conditions | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | Supply Current (Icc) | No load, f=100kHz | 10 | 15 | 20 | mA | | UVLO Threshold (Turn-On) | Vcc rising | 7.5 | 8.0 | 8.5 | V | | UVLO Hysteresis | | | 0.5 | | V | | Oscillator Frequency Range | RT=10k, CT=1nF | 80 | 100 | 120 | kHz | | Output Rise Time | C_load=1000pF | | 50 | | ns | | Output Fall Time | C_load=1000pF | | 50 | | ns | | Peak Output Current | | 0.8 | 1.0 | 1.2 | A |

Understanding the pinout is critical. Below is the standard DIP-8 or SOP-8 pin configuration for the SN51DP:

| Pin No. | Pin Name | Description | | :--- | :--- | :--- | | 1 | Vcc | Supply voltage input (8V to 20V DC). Decouple with a 0.1µF ceramic capacitor close to the pin. | | 2 | GND | Ground reference for the control logic and low-side circuitry. | | 3 | RT/CT | Timing resistor and capacitor connection. Connect an external resistor (R_T) from this pin to Vref, and a capacitor (C_T) from this pin to GND to set the oscillator frequency. | | 4 | Deadtime | Adjusts the deadtime between the two output drivers to prevent cross-conduction. Connect a resistor to GND to set the delay. | | 5 | Output B | Second gate drive output (typically 180° out of phase with Output A). | | 6 | GND_PWR | Power ground for the output drivers. Connect directly to the source of the low-side MOSFET. | | 7 | Output A | First gate drive output. | | 8 | Vref | 5V reference output (typically 5mA max). Can be used to bias external control circuits. |

Note: Always verify pin 1 orientation using the dot or notch on the IC package.

Exceeding any of these values will permanently destroy the IC:

| Parameter | Symbol | Min | Max | Unit | | :--- | :--- | :--- | :--- | :--- | | Supply Voltage (Vcc to GND) | Vcc | -0.3 | 22 | V | | Output Voltage (A, B) | Vout | -0.3 | Vcc + 0.3 | V | | Vref Output Current | I_Vref | 0 | 10 | mA | | RT/CT Voltage | | -0.3 | Vref + 0.3 | V | | Power Dissipation (DIP-8) | P_D | | 1000 | mW | | Operating Junction Temperature | T_J | -40 | 150 | °C | | Storage Temperature | T_stg | -65 | 150 | °C |

Recommendation: Keep operating Vcc below 20V to ensure long-term reliability.

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is a power management integrated circuit (IC) primarily used as an LED backlight driver

for LCD display applications, such as televisions and monitors. It is manufactured by and is commonly found in a compact (or SSOP10) package. Key Technical Specifications According to specifications provided by distributors like , the SN51DP features:

: Standalone Digital Pulse Width Modulator (DPWM) / Backlight Controller. Operating Voltage : Typically ranges from 3.5V to 7V (some sources list a tighter efficiency at 3.3V). Temperature Range : Operates between -20°C and 130°C Resolution : Programmable up to for precision pulse width control. Protections : Integrated ESD protection on I/O pins and internal connections. Pinout Configuration (MSOP-10) Based on circuit schematics found on Electronica Max , the pin assignments for the 10-pin package include: Pin 1 (VIN) : Input voltage. Pin 2 (DIM) : Dimming control signal. Pin 3 (GATE) : Gate driver output. Pin 4 (GND) Pin 5 (CS) : Current sense. Pin 7 (FB) : Feedback. Pin 9 (OVP) : Over-voltage protection. Common Applications LCD/LED Backlighting : Controlling the brightness and power of display panels. DC Motor Speed Control : Utilizing its DPWM capabilities for motor regulation. Signal Processing

: Integrated into custom electronics and robotics for reliable pulse-width modulation. Buying & Availability

The SN51DP is widely available through international distributors in quantities ranging from individual units to wholesale packs of 50: The IC Sn51dp schematic , ic inverter by-passing protection

Complete Guide to the SN51DP LED Driver: Datasheet & Application Details

The SN51DP is a specialized power management integrated circuit (IC) primarily utilized as a backlight driver in modern LCD and LED televisions. For technicians and engineers, finding the SN51DP Datasheet PDF is critical for troubleshooting display issues or performing current modifications to extend the life of LED strips. Core Technical Specifications

The SN51DP is a standalone digital pulse width modulator (DPWM) IC designed for high-efficiency power delivery.

Package Type: Typically available in an SSOP10 or MSOP10 encapsulation, designed for compact surface-mount integration.

Operating Temperature: Supports a maximum operating temperature of 85 °C, making it robust for the thermal environments found inside slim TV chassis.

Safety Standards: Complies with RoHS environmental safety standards.

Primary Function: Manages high-brightness LED backlighting for LCD TVs and monitors from brands like Arielli, Crown, Felix, and Cyberlux. SN51DP Pinout Configuration | Parameter | Conditions | Min | Typ

Understanding the 10-pin configuration is essential for circuit analysis: Pin Number Designation Function Description VIN Power Supply Input DIM Dimming Control Signal GATE Output Gate Driver for External MOSFET GND System Ground CS Current Sense Input FB Feedback Input for Voltage/Current Regulation ISET Current Setting Adjustment REF Reference Voltage Output OVP Over-Voltage Protection COMP Compensation Pin for Stability Common Applications and Repairs

The SN51DP is frequently found on mainboards such as the TP.S506.PB801 and TP.V56.PB801. 1. Managing Backlight Longevity

In professional television repair, ensuring the longevity of LED strips is a primary goal. Systems utilizing the SN51DP regulate current to these strips to maintain consistent brightness. When servicing displays, technicians often evaluate the thermal management and power delivery to the LEDs. Keeping the operating environment within the specified temperature range and ensuring stable voltage input are standard methods for preventing premature backlight failure. 2. Troubleshooting Display Failures

A common symptom in televisions utilizing this driver is a "black screen" where audio remains functional but no image is visible. This often indicates an issue within the backlight circuit. Troubleshooting steps typically include:

Voltage Verification: Checking the VIN pin to ensure the IC is receiving the necessary power supply.

Signal Analysis: Confirming the presence of the DIM signal, which tells the IC to activate the LEDs.

Peripheral Component Checks: Inspecting the external MOSFET and the integrity of the LED strips themselves, as a fault in these areas can trigger the SN51DP's protection modes. Procurement and Technical Resources

Technical documentation and replacement parts for the SN51DP can be found through specialized electronics distributors and datasheet databases.

Technical Documentation: Professional databases such as Alldatasheet or specific component distributors provide PDF manuals containing electrical characteristics and characteristic curves.

Replacement Components: The IC is commonly stocked by global electronics suppliers such as Utsource and other specialized retail platforms.

When performing repairs on high-voltage electronics like LCD/LED televisions, following proper safety protocols and referring to the specific service manual for the device in question is essential. SN51DP LED TV DRIVER - NETASHOP.GR

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Need the complete PDF with pinout, absolute max ratings, thermal characteristics, and application circuit examples. This appears to be an older or proprietary part – possibly from Sanken or a Japanese power supply module.

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If the component is a 7-segment display, please see Section 5.