Analog Devices Inc. ADP5034-1-EVALZ

Overview

The ADP5034-1-EVALZ from Analog Devices is a fully assembled and tested evaluation board designed to characterize the ADP5034 micropower management unit (Micro PMU), a 4-channel power solution featuring two 1.2 A step-down buck regulators and two 300 mA low-dropout (LDO) regulators in a 4 mm × 4 mm LFCSP package. It supports adjustable output voltages via external resistor dividers, standalone operation with single-supply input (2.3 V to 5.5 V), and configurable PWM/PSM mode selection.

For engineers reviewing the ADP5034-1-EVALZ datasheet, ADP5034-1-EVALZ pinout, ADP5034-1-EVALZ application, or ADP5034-1-EVALZ equivalent, this board enables rapid validation of line/load regulation, efficiency, ripple, dropout, and cascading configurations - especially for embedded systems requiring compact, multi-rail power sequencing and noise-sensitive analog supply generation.

Technical Context

The ADP5034-1-EVALZ implements direct hardware access to all four regulator channels (Buck 1, Buck 2, LDO 1, LDO 2) via dedicated enable jumpers (JP4–JP7), MODE jumper (JP3) for forced PWM or automatic PSM/PWM operation, and independent input/output test points (e.g., J1/VIN1, J5/VOUT1, J7/VOUT3). It integrates fixed and trimmer resistor footprints (200 kΩ) for precise output voltage adjustment across all rails.

Board-level measurement support includes dedicated voltmeter/ammeter connections (J1/J12 for VIN, J5/J8 for VOUT1, J7/J10 for VOUT3), oscilloscope-accessible SW nodes and output capacitors, and cascading capability-such as routing VOUT1 to VIN3 to power LDO1-enabling evaluation of low-noise post-regulation topologies under real load conditions up to 300 mA per LDO and 1200 mA per buck.

Key Specifications

Availability

The ADP5034-1-EVALZ is available at Aetrix Electronics and suitable for power architecture validation, PMU qualification, and multi-rail embedded system prototyping requiring stable component supply, fast turnaround, and full documentation traceability.

Supply support for ADP5034-1-EVALZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing (DSP) technologies, headquartered in Norwood, MA.

The ADP5034-1-EVALZ belongs to Analog Devices' Micro PMU evaluation platform family, engineered specifically to accelerate development of space-constrained, battery-powered applications-such as portable medical devices, IoT edge nodes, and wearables-requiring efficient, low-noise, multi-output power management.

FAQ

What is the primary function of the ADP5034-1-EVALZ?

The ADP5034-1-EVALZ is a dedicated evaluation board for the ADP5034 micropower management unit. It provides full hardware access to both buck regulators and both LDOs, enabling engineers to measure key performance metrics-including line/load regulation, efficiency, ripple, and dropout-without custom PCB design. The ADP5034-1-EVALZ supports immediate bench testing using only a DC power supply, voltmeter, ammeter, and load resistors.

Does the ADP5034-1-EVALZ support adjustable output voltages?

Yes, the ADP5034-1-EVALZ supports adjustable output voltages for all four channels via external resistor dividers. Fixed-value resistors are pre-installed for nominal settings, and optional trimmer resistor footprints (200 kΩ) allow fine-tuning during evaluation. The ADP5034-1-EVALZ user guide provides exact formulas: VOUT1 = VFB1 × (R1/R2 + 1) and VOUT3 = VFB3 × (RTOP/RBOT + 1).

How do I configure the buck regulators on the ADP5034-1-EVALZ for forced PWM mode?

To configure Buck 1 and Buck 2 for forced PWM operation on the ADP5034-1-EVALZ, connect the center contact of jumper JP3 (MODE) to the left pin header-this pulls the MODE pin high to J1 (VIN1). In contrast, connecting JP3 to the right pin header pulls MODE low to J12 (GND), enabling automatic PSM/PWM mode. This configuration directly controls the switching behavior observed on SW1/SW2 test points.

Can the ADP5034-1-EVALZ be used to cascade an LDO from a buck output?

Yes, the ADP5034-1-EVALZ explicitly supports cascading: for example, VOUT1 (Buck 1 output) can be connected to VIN3 (LDO 1 input) using the test points and wiring shown in Figure 18 of UG-271. This configuration validates low-noise analog supply generation where the buck provides efficiency and the LDO delivers clean, regulated power-critical for ADCs, sensors, or RF sections in the target system using the ADP5034-1-EVALZ.

What are the supported input and load conditions for valid measurements on the ADP5034-1-EVALZ?

The ADP5034-1-EVALZ supports buck input voltages from 2.3 V to 5.5 V and LDO input voltages from (LDO output + 0.5 V) or 1.7 V (whichever is greater) up to 5.5 V. Valid load ranges are up to 1200 mA per buck regulator and up to 300 mA per LDO. Measurement guidelines specify short, low-resistance cabling and direct probe connections to board headers (e.g., J1, J5, J7) to avoid IR drop errors-ensuring accuracy for line/load regulation, efficiency, and ground current tests on the ADP5034-1-EVALZ.