ADP2450ACPZ-4-R7

Power Management - Specialized Overview

The ADP2450ACPZ-4-R7 is a specialized power management IC designed for current transformer (CT) powered applications, such as low voltage circuit breakers. It integrates a boost shunt controller with power detection, a high-efficiency buck regulator, four programmable gain amplifiers (PGAs), a low offset operational amplifier, an analog trip circuit, and an actuator driver. The device operates with an input voltage range of 4.5 V to 36 V and provides an adjustable output voltage down to 0.6 V. It supports continuous output currents up to 500 mA at a fixed switching frequency of 1.2 MHz. The component is housed in a 32-lead LFCSP package and functions within a temperature range of -40°C to +125°C.

Power Management - Specialized Feature Summary

• Integrates a boost shunt controller with programmable power detection to prevent power hiccups in CT-powered systems.
• Includes a high-efficiency buck regulator operating in PWM mode with a fixed 1.2 MHz frequency for low output ripple.
• Features four low offset, low power consumption programmable gain amplifiers for accurate wide-range current measurement.
• Combines a fast analog trip circuit and actuator driver for direct protection and mechanical operation control.

Power Management - Specialized Applications

• Low voltage molded case circuit breakers (MCCB)
• Current transformer (CT) powered supply systems
• Leakage current detection circuits

Power Management - Specialized Procurement Notes

Verify the specific suffix 'R7' corresponds to the required reel packaging quantity from official Analog Devices documentation. Confirm that the 'ACPZ' designation matches the intended LFCSP-32 package variant for your PCB layout. Ensure compatibility with the 4.5 V to 36 V input range requirements of your target circuit breaker application before finalizing procurement.

Power Management - Specialized Selection Notes

Select this component when designing CT-powered protection devices requiring integrated signal conditioning and power regulation. The inclusion of dedicated PGAs and an analog trip circuit reduces external component count compared to general-purpose PMICs. Consider the 1.2 MHz switching frequency for EMI constraints and the 500 mA output capability for driving local loads and actuators directly.

Power Management - Specialized Part Context

This part belongs to the ADP2450 family of digital power management ICs specifically engineered for industrial circuit breaker applications. Unlike standard DC-DC converters, it combines power conversion with critical protection logic and sensing amplifiers. The ADP2450ACPZ-4-R7 represents a specific package and tape-and-reel configuration within this specialized series, targeting compact, high-reliability installations.

Power Management - Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Evaluate alternative solutions based on functional equivalence of the integrated boost/buck topology and PGA count if substitution is necessary.

Power Management - Specialized FAQ

How does the ADP2450 handle power stability in CT-powered circuits?

It integrates a boost shunt controller with a programmable power detection circuit that prevents power hiccups by monitoring input conditions and adjusting accordingly.

What is the purpose of the integrated analog trip circuit?

The fast analog trip circuit provides immediate protection response capabilities without relying solely on software, enhancing system reliability in fault conditions.