Diodes Inc

The AP8803 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 7 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 8V to 30V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AP8803 switches at frequency up to 700kHz. This allows the use of small size external components, hence minimizing the PCB area needed. Maximum output current of AP8803 is set via an external resistor connected between the VINand SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.2V or lower at CTRL shuts down the output at SW and puts the device into a low-current standby state.

The AP9101C is a protection IC designed with high precision voltage detection circuit.

The eFuse is a 5V protection device with a bidirectional switch that incorporates input slew rate control to reduce input surge current and reverse current detection to prevent discharge to VCC from VOUT. The eFuse protection features include undervoltage lockout, a fixed 2.5A current limit, trimmed fast response overvoltage protection and thermal shutdown. The EN/FAULT line is a tri-state bidirectional interface that can be used to disable the output by pulling the line low through an external open-drain device. If a thermal fault occurs, the voltage on the pin will go to an intermediate voltage indicating a fault and it can be connected to another device to cause simultaneous shutdown. The SAS pin is an ESD protected interface that allows direct external control of the eFuse. Driving the SAS pin high pulls the enable line low causing the eFuse to shut down and enter a low quiescent current state.

The eFuse is a +5V protection device with a bidirectional switch that incorporates input slew rate control to reduce input surge current and reverse current detection to prevent discharge to Vcc from Vout. The eFuse protection features include under voltage lockout, a fixed 2.5A current limit, trimmed fast response over voltage protection and thermal shutdown. The Enable/Fault line is a tri-state bidirectional interface that can be used to disable the output by pulling the line low through an external open drain device. If a thermal fault occurs, the voltage on the pin will go to an intermediate voltage indicating a fault and it can be connected to another device to cause simultaneous shut down. The SAS pin is an ESD protected interface that allows direct external control of the eFuse. Driving the SAS pin high pulls the enable line low causing the eFuse to shutdown and enter a low quiescent current state.

The AP9214L is a single chip protection solution specially designed for 1-cell Li+ rechargeable battery pack application.

The AP9234L family is a single chip protection solution specially designed for 1-cell Li+ rechargeable battery pack application.

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