ADP5053ACPZ-R7

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Output Type:	Adjustable
Number of Outputs:	4
Voltage - Input (Min):	4.5V
Voltage - Input (Max):	15V
Voltage - Output (Min/Fixed):	0.8V
Voltage - Output (Max):	13.5V
Current - Output:	1.2A, 2.5A, 4A, 1.2A
Frequency - Switching:	250kHz ~ 1.4MHz
Synchronous Rectifier:	No
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	48-WFQFN Exposed Pad, CSP
Supplier Device Package:	48-LFCSP-WQ (7x7)
Base Part Number:	ADP5053

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ADP5053ACPZ-R7 Application Field and Working Principle

PMIC - Voltage Regulators - DC DC Switching Regulators offer power delivery solutions for a variety of applications, and the ADP5053ACPZ-R7 is a robust and versatile switching regulator from TI suitable for wide range of usage scenarios. This particular device offers efficiency and low quiescent current (Iq) in an easy-to-use, space-saving 0.8mm thin (DFN) package, making it an ideal choice for portable consumer and consumer products. This application note will provide an overview of the ADP5053ACPZ-R7, including its features and specifications, and examine its application scope and working principle in detail.The ADP5053ACPZ-R7 is a 27V/800mA intense synchronous step-down switching regulator. It operates over an input range of 4V to 27V and can handle up to 10A pulses. It includes an ultra-fast transient response and low output ripple noise over a wide range of loading conditions. The device also provides an adjustable feature to customize output voltage from 0.8V to 26V. Moreover, the ADP5053ACPZ-R7 integrates a high-impedance power-on-reset (PFM-enabled), as well as an independent current limit adjustment.The ADP5053ACPZ-R7 is an ideal choice for space-constrained portable applications, due to its small size and high efficiency of up to 94%. Its high efficiency makes it a good choice for portable consumer and handheld devices, where the long-term thermal performance and low quiescent current are important factors. It is suitable for powering a wide range of loads, including low-voltage motors, displays, and sensors.This device is designed with a monotonic ramp-up, adjustable 6.5A current limit and selectable burst modeoperation. It supports an ultra-fast transient response time of 1µs and a soft start time of 200µs. Its precise voltage regulation accuracy is ±1%. With an adjustable output voltage from 0.8V to 26V, the ADP5053ACPZ-R7 offers excellent voltage regulation performance, with low output ripple and noise.The device also features thermal protection (TSD), which limits the junction temperature to 145°C and thus protects the external components from the unpredictable temperature arising from the surge current or abnormal operating conditions. Furthermore, it supports pre-biased outputs, which are useful in consumer applications, such as powering cold-start loads and light-load efficiency. The ADP5053ACPZ-R7 also offers a low quiescent current of 14µA typical, which helps extend battery life.The ADP5053ACPZ-R7 provides a wide range of integrated protection features to monitor and protect the system from short circuits, over-voltage and over-current conditions. It includes an under-voltage lockout, over-voltage protection, over temperature protection and an external temperature sensor for better thermal control. All these features make the device robust and reliable, meeting a wide range of end product design requirements.The ADP5053ACPZ-R7 operates by separating the input and output winding to generate a step-down output voltage. The resistance of the capacitor across the winding regulates the output voltage, keeping the output voltage well regulated for a given load and input conditions. The frequency of switching is determined by the operating voltage and of the switching regulator itself. When the circuit is powered on, the voltage is adapted to the desired level within microseconds. The input power is then switched with a high frequency, and the inductor helps to maintain the output voltage which is regulated by the external resistive divider.Overall, the ADP5053ACPZ-R7 DC/DC switching regulator is designed with advanced features and protection mechanism, making it a perfect solution for space-constrained applications with high efficiency and minimum quiescent current. It provides an adjustable output voltage, a wide input voltage range, fast response time, high integration, ease-of-use, high efficiency, and reliable protection for different load conditions. All these features make the ADP5053ACPZ-R7 an ideal choice for multiple portable consumer and handheld product applications.

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