DL1125C

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DL1125C is a multi-channel micro-power voltage detector IC. In devices such as industrial computers, notebook computers, battery-driven equipment and other applications, DL1125C can detect and monitor multiple power levels in a small number of pins, providing accurate protection for the equipment. In particular, the product meets the USB PD specification 2.0 standard and EN55032 (Class A) standard.

In terms of application fields, DL1125C is used for 5V / 9V / 12V power detection in PD4.0 PD3.0 data cables of USB / Type-C / USB-A products. In the field of mobile terminal power data cables, the application of DL1125C is also more common. When the battery voltage is lower than the set threshold, it can be used to cut off the power supply. In addition, it is used in field-inserted external extended battery power detection, computer chip power failure protection applications, etc.

In terms of working principle, when the voltage applied to the UBP pin meets the requirements of the USB PD2.0 power specifications, the DL1125C will be turned on. This will cause the voltage at UFMS pin to go low, so that the load connected to it will be affected accordingly. Due to its small AO1 package size, DL1125C can be easily embedded into many portable electronic devices where it is difficult to install traditional components.

The function of the UVLO pin in the circuit is a voltage limiting circuit that prevents the voltage from exceeding the rated threshold limit and burning out the component. In addition, the CDS pin is a capacitor coupling capacitance network, which is used to reduce the actuation noise of the system and avoid false tripping of the system.

In summary, DL1125C is a multi-channel micro-power voltage detector IC, which is widely used in the mobile terminal power data cable field, such as PD4.0 PD3.0 data cables of USB / Type-C / USB-A products. In addition, it can also be used in field-inserted external extended battery power detection, computer chip power failure protection, and other applications. It is mainly used to detect and monitor multiple power levels in a small number of pins, providing accurate protection for the equipment.

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