ADP2119ACPZ-1.0-R7

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PMIC - Voltage Regulators - DC DC Switching Regulators

The ADP2119ACPZ-1.0-R7 is an ultra-low quiescent current DC-DC switching regulator designed for applications powered from a battery. The device combines a low dropout regulator with a buck-boost controller to generate output voltages that are higher, lower, or equal to the input voltage. It is capable of operating from input voltages as low as 0.9V to as high as 5V, making it suitable for many applications in mobile consumer and industrial products.

Application Field of ADP2119ACPZ-1.0-R7

The ADP2119ACPZ-1.0-R7 is ideally suited for a variety of applications, including mobile device battery-powered sensor, low power smartphone, and consumer electronics products. Its low quiescent current makes it an excellent choice for battery powered systems where a high efficiency solution is required. Its small size, low output voltage ripple, and wide output voltage range make it suitable for a variety of industrial applications. It can also be used for automotive, medical, and power supply applications.

Working Principle of ADP2119ACPZ-1.0-R7

The ADP2119ACPZ-1.0-R7 is an ultra-low quiescent current switch-mode DC-DC regulator that integrates an operational amplifier, a buck-boost converter, a voltage reference and a control logic. It is capable of providing an output voltage that is higher, lower, or equal to the input voltage. The device also incorporates a low-noise modulation scheme that eliminates excessive output voltage ripple, ensuring a clean output voltage. The internal PWM controller ensures high efficiency, low noise operation, and ultra-low quiescent current.

The device achieves high efficiency and low noise operation by using an adaptive switching frequency scheme, which allows the switching frequency to be modulated in response to changes in the load or input conditions. This adaptive switching scheme reduces the switching losses in the device, leading to higher efficiency and lower EMI noise.

The device also includes a slew rate control and a soft start circuit to reduce current surge during start-up. It is designed to be used with an external MOSFET switch and requires an external diode to complete the circuitry. The output voltage is adjustable with a single resistor for improved accuracy.

Conclusion

The ADP2119ACPZ-1.0-R7 ultra-low quiescent current DC-DC switching regulator is a highly-integrated device designed to meet the demands of portable, battery powered sensor applications. Its low quiescent current, high efficiency, low noise operation, wide output voltage range, and small size make it an excellent choice for many applications. It is also capable of providing an output voltage that is higher, lower, or equal to the input voltage. Its integrated low-noise modulation scheme, slew rate control, and soft start circuit ensure clean output voltages and low start-up current surge.

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