ADP2503ACPZ-4.5-R7

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The ADP2503ACPZ-4.5-R7 is a device known as a DC to DC switching regulator, which is part of the PMIC (Power Management IC) family of electrical components. It is designed to provide a stable, regulated output voltage in the range of 3.3 to 5.5V, with a current output of up to 4.5A. The ADP2503ACPZ-4.5-R7 is a low quiescent current device, offering a low standby power consumption of 1.2 mA at 3.3V output and 0.9mA at 5.0V output.

The ADP2503ACPZ-4.5-R7 contains an integrated low side MOSFET with low on-resistance, allowing for a high switching frequency of up to 1.2 MHz. This high switching frequency ensures fast transient responses and low output voltage ripple, helping reduce external components such as capacitors and inductors. The regulator also has many programmable features, including EN/UVLO (Enable/Under Voltage Lockout), output soft start, internal oscillator and adjustable ramp. The current limit is adjustable to 3.2A, and the device also provides an external current sense feedback which maintains the current limit down to 300mA.

The ADP2503ACPZ-4.5-R7 is ideal for applications such as USB power supplies, point of load (PoL) supplies, battery chargers and DC motor drives. It provides a low noise, small form factor solution for powering electronic circuits and equipment, as well as providing protection against overpre-regulation conditions. The device also offers overtemperature protection, as well as protection against short-circuits, undervoltage and overloads.

The working principle of the ADP2503ACPZ-4.5-R7 is quite simple. It uses a switching regulator to regulate the output voltage from a higher input voltage. It has an internal MOSFET with a low on-resistance that turns on and off rapidly to control the current flow. The voltage is regulated by a feedback loop, which compares the output voltage to a reference voltage and adjusts the regulation accordingly. The feedback loop is provided with an “offset” voltage to enable the user to adjust the regulation. The voltage regulation is done by adjusting the internal frequency of the MOSFET.

In summary, the ADP2503ACPZ-4.5-R7 is a low quiescent current, highly versatile switching regulator that is ideal for many applications. It has a low on-resistance integrated MOSFET with a high switching frequency, programmable features, adjustable current limit and overtemperature protection. It is designed to provide a stable, regulated output voltage with a current output of up to 4.5A. The working principle of the device is relatively simple and straightforward. The device is a great choice for applications such as USB power supplies, point of load supplies, battery chargers and DC motor drives.

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