Analog Devices Inc. ADP5023CP-EVALZ

Overview

ADP5023CP-EVALZ from Analog Devices is a fully assembled, standalone evaluation board designed to characterize the ADP5023 micropower management unit (Micro PMU), a 3-channel power solution integrating two buck regulators and one LDO regulator in a 4 mm × 4 mm LFCSP package. It supports adjustable output voltage configuration via external resistor dividers, dedicated per-channel enable jumpers (JP4–JP6), and MODE jumper (JP3) for PWM/PSM mode selection - enabling engineers to validate line/load regulation, efficiency, ripple, and ground current under real-world conditions.

For engineers reviewing the ADP5023CP-EVALZ datasheet, ADP5023CP-EVALZ pinout, ADP5023CP-EVALZ application, or ADP5023CP-EVALZ equivalent, this board provides direct access to VIN1, VOUT1–VOUT3, EN1–EN3, MODE, FB1–FB3, and PGND/AGND test points - simplifying measurement of buck/LDO performance across input ranges (2.3 V–5.5 V), load currents (0–300 mA), and operating modes without custom PCB design.

Technical Context

The ADP5023CP-EVALZ implements hardware-level control for the ADP5023 IC, with discrete jumpers enabling independent channel enable (EN1–EN3), forced PWM vs. automatic PSM operation (via JP3), and cascading of LDO inputs from buck outputs. All critical signals - including feedback nodes (FB1/FB3), switch nodes (SW1/SW2), and power grounds (PGND/AGND) - are routed to accessible headers (J1–J16) and test points for oscilloscope, voltmeter, and ammeter connection.

It integrates fixed-value resistor dividers (R1/R2 for Buck 1; R15/R16 for LDO1) and optional trimmer footprints (R3/R4, R13/R14) for rapid output voltage adjustment, supporting target outputs such as 3.3 V and 2.8 V. The board uses Murata GRM188R6 MLCCs (4.7 µF, 10 µF, 1 µF) and LQM2HPN 1.0 µH inductors, matching the recommended layout in the ADP5023 datasheet for stable high-frequency switching (3 MHz).

Key Specifications

Availability

ADP5023CP-EVALZ is available at Aetrix Electronics and suitable for power architecture validation, PMU qualification, and LDO/buck regulator characterization requiring stable component supply in industrial, medical, and portable electronics development.

Supply support for ADP5023CP-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 semiconductors, headquartered in Norwood, MA.

The ADP5023CP-EVALZ belongs to Analog Devices' Micro PMU evaluation platform family, engineered specifically to accelerate design-in of compact, efficient multi-rail power solutions for space-constrained battery-powered systems.

FAQ

What is the primary function of the ADP5023CP-EVALZ?

The ADP5023CP-EVALZ is a ready-to-use evaluation board for the ADP5023 micropower management unit. It enables full functional and performance validation - including line/load regulation, efficiency, ripple, and ground current - of the ADP5023's dual 3 MHz buck regulators and single 300 mA LDO without requiring custom PCB design or additional support circuitry.

Which IC does the ADP5023CP-EVALZ evaluate?

The ADP5023CP-EVALZ evaluates the ADP5023 micropower PMU, a 3-channel integrated power management IC in a 24-lead, 4 mm × 4 mm LFCSP package. It is not compatible with ADP5024, ADP5034, or ADP5037 without hardware modification - though it shares mechanical and layout similarities with those boards per UG-271.

How do I configure output voltage on the ADP5023CP-EVALZ?

Output voltage on the ADP5023CP-EVALZ is set using external resistor dividers: VOUT1 = VFB1 × (R1/R2 + 1) for Buck 1 and VOUT3 = VFB3 × (R15/R16 + 1) for LDO1. Fixed resistors are pre-installed; optional trimmer footprints (R3/R4, R13/R14) allow quick adjustment during prototyping before replacing with precision fixed resistors for final validation.

Can the ADP5023CP-EVALZ evaluate both buck and LDO regulators simultaneously?

Yes - the ADP5023CP-EVALZ supports concurrent evaluation of all three channels: Buck 1 (VOUT1), Buck 2 (VOUT2), and LDO 1 (VOUT3). Each has dedicated enable jumpers (JP4–JP6), independent input connections (VIN1, VIN3), and accessible test points (J5, J6, J7), allowing simultaneous or isolated characterization under varying load and input conditions.

Does the ADP5023CP-EVALZ support cascading the LDO from a buck output?

Yes - the ADP5023CP-EVALZ supports cascading LDO1 (VOUT3) from Buck 1 (VOUT1) by connecting J5 (VOUT1) to J3 (VIN3), as shown in Figure 18 of UG-271. This configuration leverages the buck's higher efficiency for intermediate rail generation and the LDO's low-noise output for sensitive analog circuits - with headroom verification required to avoid dropout.