LD7750RGR

The LD7750RGR is a primary-side regulation (PSR) PWM controller designed for low-power AC/DC converters, commonly used in chargers, adapters, and LED drivers.
### Key Features:
- Primary-side control eliminates the need for an optocoupler, reducing cost and complexity.
- Quasi-resonant (QR) operation improves efficiency and reduces EMI.
- Wide input voltage range (85V–265V AC).
- Built-in protections (over-voltage, over-current, over-temperature).
- Low standby power consumption (<100mW).
### Applications:
- USB chargers
- LED lighting drivers
- Low-power AC/DC adapters
The LD7750RGR integrates multiple functions into a compact SOIC-8 package, making it suitable for space-constrained designs while ensuring reliable performance.
Would you like details on pin configuration or typical circuit design?

The LD7750RGR is a PWM controller for power supplies. Equivalent alternatives include:
- OB2263 (On-Bright)
- SD484X (Silicon Touch)
- TNY280 (Power Integrations)
- VIPer22A (STMicroelectronics)
- FSGM300N (Fairchild/ON Semiconductor)
These chips offer similar functionality in flyback converters. Verify pin compatibility and specs before substitution.

The LD7750RGR is a low-power, current-mode PWM controller IC designed for offline flyback converters. Key features include:
- Wide Input Voltage Range: Operates from 8V to 30V.
- Low Standby Power: <100mW at 230VAC.
- Current-Mode Control: Improves transient response and simplifies loop compensation.
- Fixed 65kHz Switching Frequency: Reduces EMI and optimizes efficiency.
- Built-in Protections: Overload (OLP), overvoltage (OVP), and over-temperature (OTP).
- Soft Start: Reduces inrush current.
- Auto-Restart Mode: For fault recovery.
- Green Mode Operation: Enhances efficiency at light loads.
- Low Startup Current: ~10µA, reducing power loss.
Ideal for AC/DC adapters, chargers, and auxiliary power supplies. Compact SOP-8 package.

The LD7750RGR is a 6-pin PWM controller IC designed for power supply applications. Its pin functions are as follows:
1. GND (Pin 1) – Ground reference.
2. FB (Pin 2) – Feedback input for output voltage regulation.
3. CS (Pin 3) – Current sense input for overcurrent protection.
4. VCC (Pin 4) – Supply voltage input.
5. OUT (Pin 5) – Gate driver output for MOSFET control.
6. HV (Pin 6) – High-voltage startup and supply input.
The IC is commonly used in offline flyback converters, providing features like soft-start, overload protection, and adjustable switching frequency.

The LD7750RGR is manufactured by STMicroelectronics, a multinational electronics and semiconductor company headquartered in Geneva, Switzerland.
STMicroelectronics specializes in designing and producing a wide range of semiconductor products, including microcontrollers, sensors, power management ICs, and analog devices. The company serves industries such as automotive, industrial, consumer electronics, and IoT.
The LD7750RGR is a high-voltage resonant controller IC, typically used in power supply applications like LED drivers and adapters. STMicroelectronics is known for its innovation and reliability in semiconductor solutions.

The LD7750RGR is a PWM controller IC primarily used in power supply applications. Key application areas include:
1. AC/DC Converters – For adapters, chargers, and offline power supplies.
2. LED Drivers – Efficient power management for LED lighting systems.
3. Auxiliary Power Supplies – Used in TVs, monitors, and home appliances.
4. Industrial Power Systems – Provides stable voltage regulation in industrial equipment.
It features low standby power, high efficiency, and protection mechanisms, making it suitable for compact, energy-efficient designs.

The LD7750RGR is available in a SOP-8 (Small Outline Package). This surface-mount package has 8 pins and is commonly used for power management ICs. It offers compact size and good thermal performance.