ADP5034ACPZ-R7

Voltage Regulators - Linear + Switching Overview

The ADP5034ACPZ-R7 is a high-integration power management IC from Analog Devices, featuring four synchronous buck regulators and an integrated low-dropout (LDO) linear regulator. It operates within an input voltage range of 2.3 V to 5.5 V and delivers output currents of up to 1.2 A for the switching regulators and 300 mA for the LDO. The device utilizes a fixed 3 MHz switching frequency to minimize external component size. It is housed in a 24-pin LFCSP-EP package and supports adjustable output voltages via external resistors.

Voltage Regulators - Linear + Switching Feature Summary

• Integrates four independent synchronous buck converters with dedicated enable pins for precise power sequencing control.
• Includes a single integrated low-dropout (LDO) regulator to provide clean power for sensitive analog or RF loads.
• Supports flexible operation modes including forced PWM for low noise and pulse-skip mode for improved light-load efficiency.
• Features comprehensive protection mechanisms including thermal shutdown and current limiting across all outputs.

Voltage Regulators - Linear + Switching Applications

• Powering multi-voltage processor systems, ASICs, and FPGAs in portable devices.
• Providing regulated power rails for USB-powered handheld medical equipment.
• Supplying power to RF chipsets requiring low-noise linear regulation alongside digital logic supplies.

Voltage Regulators - Linear + Switching Procurement Notes

Verify the specific suffix code (e.g., -R7) against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure that the ordering part number matches the required UVLO threshold and enable pin configuration, as variations exist within the ADP5034 family. Confirm availability status directly with authorized distributors due to potential supply constraints.

Voltage Regulators - Linear + Switching Selection Notes

Select this component when a compact solution is required for systems needing multiple distinct voltage rails from a single input source. The choice between variants depends on the specific undervoltage lockout (UVLO) requirements and whether active pull-down features are necessary for the application's power-up sequence. Evaluate the thermal performance of the LFCSP-24 package against the expected total load current.

Voltage Regulators - Linear + Switching Part Context

This part belongs to the ADP5034 series of highly integrated power management ICs designed for space-constrained applications. It consolidates multiple discrete power stages into a single package, reducing board area and simplifying design complexity. The series is targeted at portable electronics where battery life and physical footprint are critical design parameters.

Voltage Regulators - Linear + Switching Replacement Considerations

Check for ADP5034AREZ-R7 or ADP5034ACPZ-2-R7 if different UVLO thresholds or enable pin configurations are required. Verify package compatibility, as other variants may use TSSOP-EP-28 packages instead of LFCSP-24.

Voltage Regulators - Linear + Switching FAQ

What is the maximum switching frequency of the ADP5034?

The internal switching frequency is fixed at 3 MHz.

Can the output voltages be adjusted?

Yes, all four buck regulators and the LDO support adjustable output voltages using external resistor divider networks.