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Low-dropout voltage regulator features 30µVRMS noise performance

NXP Semiconductors has announced the LD6806CX4 LDO (low-dropout) voltage regulator, featuring LDO of 60mV at a 200mA current rating. With 0.76x0.76x0.47mm WLCSP, the regulator is suitable for good space-constrained designs in mobile handsets, where battery life is also a critical success factor, says the company. Batteries in mobile phones discharge linearly over time, but the regulator compensates for this effect by providing a constant regulated output voltage, claims the company. If the battery voltage of a smartphone goes down to 3V, due to the LDO voltage the regulator is still able to support an SD card application with a mandatory and stable supply voltage of 2.9V. The company’s regulator features noise performance of 30µVRMS, which helps prevent changes in the regulated output voltage and eliminates the need for an external dedicated noise-reducing capacitor, claims the company. Battery-powered applications are also supported by the standby current of 0.1µA, which reduces power consumption and enhances battery efficiency. The regulator also features good ESD robustness of 10kV of human body model, thermal shutdown, and a current limiter to protect circuits. Package options include the LD6806F in a small DFN1410-6 of SOT886 leadless package with dimensions of 1.45x1x0.5mm, or the LD6806TD in a 5pin SOT753 general-purpose consumer package with standard dimensions of 2.9x1.5x1mm. In addition to these package options, the company’s LDO regulator also includes high power supply rejection ratio performance LDOs with 75dB, such as the LD6805K in a lead-free QFN package of SOT1194, with dimensions of 1x1mm and a height of 0.55mm maximum.