AP8802FNG-7

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AP8802FNG-7 belongs to PMIC (power management integrated circuits) – LED Drivers. This device is a general purpose boost converter with a wide input voltage range from 2.7V to 6V and is specifically designed as an LED driver, offering 0.35V to 28V of constant current output, up to 2A. It features built-in input and output protection and a sleep mode for power conservation. It is suitable for applications requiring a constant current source with low noise, wide input voltage range and high efficiency.

The AP8802FNG-7 operates in Boost mode and of particular benefit is its CC/CV (Constant Current/Constant Voltage) operation. In this mode, an output constant current is enabled without feedback components as it uses a resistor on the FB pin to set the current and adjust the output voltage accordingly. It also provides a clock input terminal to set the working frequency and hence reduce the electromagnetic interference (EMI) caused by switching components.

The AP8802FNG-7 features under voltage protection (UVP) which protects the device and LED from destructive deep discharging. If the LED current falls below the levels programmed, the IC will shut down to protect the LED from damaging reverse currents. It also includes a thermal protection system. When the junction temperature exceeds 130°C, the device will shut off its main switch for protection.

The AP8802FNG-7 adopts a constant frequency Skip Mode (pulse skipping) as the control mode. This adjustable frequency skip mode allows the switching frequency to be adjusted to the minimum in order to reduce the switching loss and reduce electromagnetic noise. The AP8802FNG-7 offers over current protection (OCP) to protect LED strings from unforeseen currents due to LED defects or faulty wiring. The output of the device will be disabled once the current exceeds the programmed values.

The AP8802FNG-7 is designed to drive a single LED or multiple LEDs in parallel. It has an internal schottky diode which helps limit its power dissipation under no-load conditions. This allows the AP8802FNG-7 to achieve a wide input voltage range at a fixed frequency while delivering a stable output current.

In summary, the AP8802FNG-7 is a general purpose boost converter specifically designed to drive LEDs and offers features like low noise, wide input voltage range and high efficiency. Its features include built-in input and output protection, sleep mode for power conservation and temperature protection. It also offers constant frequency skip mode, over-current protection and high efficiency. All in all, it is a great choice of device for applications requiring LED lighting.

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