DIOO PMIC DIO8018 with 7-channel high-performance LDO

　　DIOO has recently launched the PMIC DIO8018, an integrated 7-channel high-performance LDO which is specially designed to provide power supply solutions for multi-camera application scenarios such as mobile phones, tablet computers and extended reality (XR).

　　In one camera module, CMOS image sensors generally require three-way power supplies (Core, I/O, and Analog), and some cameras also have power supply requirements for auxiliary functions such as Optical Image Stabilization (OIS) and Auto Focus (AF). A single camera module needs 3~5 channels of power supply, and the tablet computer, mobile phone, and XR require more than one camera module.

　　The load characteristics and requirements of the power supply differs by camera modules. There are digital circuit power supply DVDD that requires high current and fast dynamic response, and analog circuit power supply AVDD that is very sensitive to power supply noise. Different types of cameras may also require different output voltages and currents. The camera sensor power supply generally supplies the nearest components. However, the main PMIC of the platform is generally far away from the position of the camera, and it does not have enough channels to supply multiple cameras.

　　The use of multiple discrete LDOs is a solution, but it will occupy a large amount of PCB area, which is a huge challenge to the structural design and PCB layout of multi-camera module equipment.

　　The DIO8018 can not only meet the high current and fast dynamic response required by DVDD, but also meet the high PSRR and low noise required by AVDD, and also satisfies the need for an ultra-small size. It is a perfect solution for multi-camera applications.

　　图1：Typical Applications

　　Integrated 7-channel LDO

　　The DIO8018 is a PMIC with an integrated 7-channel LDO. It has a 2-channel low-dropout LDO for high-current power supply (LDO1/2 output current up to 1.5 A, can power the DVDD of a high-pixel camera) and multi-channel high-voltage power supply for noise sensitive power supply PSRR LDO power rail (Vsys to Vout of LDO3-7, PSRR can reach more than 92dB at 1KHz, which can power the AVDD of the camera).

　　The DIO8010 is a PMIC with an integrated 7-channel LDO. It has a 2-channel, low-dropout LDO for high-current power supplies and a multi-channel, high PSRR, LDO power rail for noise-sensitive power supplies. The LDO 1/2 has an output current of up to 1.5 A and can supply the DVDD of a high-pixel camera. The PSRR of LDO 3 to 7, which is Vsys to Vout, can reach more than 92 dB at 1kHz.