ADP1883ARMZ-1.0-R7

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The ADP1883ARMZ-1.0-R7 is a DC-DC switching controller used in power management integrated circuits (PMICs). It is an advanced, highly integrated power management solution that can be used in applications ranging from mobile devices, white goods, and small appliances. The device features a wide range of integrated features, including current- and voltage-mode regulation, overvoltage-, overcurrent-, and temperature-protection, dynamic output voltage and current limit programming, and dynamic voltage scaling to optimize power efficiencies.

The ADP1883ARMZ-1.0-R7 integrates an advanced analog-controlled, synchronous, high-efficiency buck regulator and a linear regulator. The buck regulator is designed for step-down regulation applications, while the linear regulator is designed for low-noise, low-dropout performance. The device also integrates a power-good output for system monitoring, a 10-bit digital-to-analog (DAC) converter for voltage and current programming, and fault status indicators.

The working principle of the ADP1883ARMZ-1.0-R7 is based on the synchronous buck topology, in which the high-side and low-side MOSFETs are directly driven by the output of the error amplifier. The controller features an adaptive voltage tracking technology based on valley current, which reduces the output voltage ripple by providing current to the output during the off-time of the low-side switch. This reduces the power dissipation of the MOSFET switch and increases efficiency by a significant margin.

The device also features advanced current-mode control and a voltage-mode control loop, which provides improved transient response, better output filtering, and better control of the output voltage and current. The integrated DAC converter allows for a wide range of output voltage and current programming options, with support for switching frequencies up to 12MHz. The device also incorporates several protection functions, including overvoltage, overcurrent, short circuit, and overtemperature protection.

The ADP1883ARMZ-1.0-R7 is a highly integrated and efficient power management solution designed for use in mobile devices, white goods, and small appliance applications. Its advanced synchronous buck topology provides high efficiency, wide output voltage and current programmability, and protection against overvoltage, overcurrent, short circuit, and overtemperature conditions. The device is well-suited for a wide range of applications, such as dc-dc converter in GSM/CDMA/Smartphone power management, dc-dc converter in embedded system, point-of-load converters, and wide range ac-dc converters.

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