ADP5034AREZ-R7

Overview

The ADP5034AREZ-R7 is a high-integration power management IC from Analog Devices, featuring two synchronous buck regulators and two low-dropout (LDO) linear regulators. It operates within an input voltage range of 2.3 V to 5.5 V. The device provides two adjustable buck outputs capable of delivering up to 1.2 A each, with output voltages ranging from 0.8 V to 3.8 V. Additionally, it includes two LDOs supporting up to 300 mA, with adjustable outputs from 0.8 V to 5.2 V. The integrated switching frequency is 3 MHz, enabling the use of compact external components. The unit is housed in a 28-lead TSSOP package with an exposed pad.

Feature Summary

• Integrates two high-performance synchronous buck converters and two low-noise LDOs for comprehensive multi-rail power distribution.
• Features a 3 MHz switching frequency that minimizes the physical footprint of external passive components.
• Supports forced PWM mode for noise-sensitive applications and automatic PSM/PWM modes to optimize efficiency under light loads.
• Includes dedicated enable pins for individual regulator control and precise sequencing capabilities.

Applications

• Powering complex processor systems requiring multiple distinct voltage rails.
• Portable medical devices and handheld instruments where board space is limited.
• RF chipset power supplies demanding low noise and high power supply rejection.
• ASIC and FPGA biasing circuits requiring stable, adjustable voltage sources.

Procurement Notes

Verify the specific suffix 'AREZ' against the manufacturer's current datasheet to confirm pinout compatibility and electrical specifications. Ensure the ordering code matches the required UVLO threshold variant. Confirm RoHS compliance status and moisture sensitivity level requirements prior to finalizing procurement orders.

Selection Notes

Select this component when a single-package solution is needed for dual-buck and dual-LDO architectures. It is suitable for designs prioritizing high switching frequencies to reduce inductor size. Consider the 28-lead TSSOP package constraints regarding thermal dissipation and PCB layout area compared to smaller CSP alternatives.

Part Context

This part belongs to the ADP5034 family of micro power management units. It shares core architecture with variants like the ADP5034ACPZ-R7 but differs in packaging and specific electrical thresholds. The family is designed for portable electronics, offering a balance between performance and spatial efficiency through integrated regulation stages.

Replacement Considerations

Check for direct pin-compatible substitutes within the same product line. Verify if alternative packages offer identical electrical characteristics. Ensure any replacement maintains the required 3 MHz switching frequency and output current capabilities.