Analog Devices Inc. ADP5302-EVALZ

Overview

ADP5302-EVALZ from Analog Devices is a fully assembled and tested evaluation board designed to characterize the ADP5302 ultralow power, synchronous step-down dc-to-dc regulator with integrated load switch in a 10-lead 3 mm × 3 mm LFCSP package. It supports input voltages from 2.15 V to 6.50 V, enables output voltage configuration via VID resistor or jumper, and provides test points for measuring switching waveform, load/line regulation, efficiency, ripple, and inductor current.

For engineers reviewing the ADP5302-EVALZ datasheet, ADP5302-EVALZ pinout, ADP5302-EVALZ application, or ADP5302-EVALZ equivalent, this board delivers rapid setup for performance validation of the ADP5302's ultralow quiescent current operation, PWM/hysteresis mode selection, and 1.8 V default output in battery-powered IoT sensor nodes, wearable medical devices, and energy-harvesting systems.

Technical Context

The ADP5302-EVALZ implements the full reference design for the ADP5302 IC, including its integrated 2.2 µH power inductor (L1), input/output filtering capacitors (C1–C4), and configurable jumpers (J5–J8) for EN, VID, SYNC/MODE, and VINOK routing. Test points TP1–TP9 provide direct access to VIN_SNS, SW, STOP, VOUT_SNS, GND_SNS, and VINOK signals for oscilloscope and multimeter measurements.

Board-level features include jumper-selectable PWM or hysteresis mode (J6), external VID resistor programming (J8 floating), enable control (J5), and VIN_OK pull-up options (J7). All passive components are surface-mount with verified footprints (e.g., R0603, C1206, Inductor 45×32), and the U1 footprint matches the ADP5302ACPZ-1-R7 10-lead LFCSP package.

Key Specifications

Availability

ADP5302-EVALZ is available at Aetrix Electronics and suitable for battery-powered sensor nodes, portable medical monitors, low-power wireless transceivers, and energy-harvesting subsystems requiring stable component supply and validated reference designs for ultralow IQ DC/DC conversion.

Supply support for ADP5302-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 ADP5302-EVALZ belongs to Analog Devices' ultralow power DC/DC evaluation platform family, engineered specifically to accelerate development of long-life battery applications where sub-200 nA quiescent current and high light-load efficiency are critical.

FAQ

What is the primary function of the ADP5302-EVALZ?

The ADP5302-EVALZ is a dedicated evaluation board for the ADP5302 ultralow power synchronous step-down regulator. Its purpose is to enable rapid, repeatable characterization of the ADP5302's performance-including efficiency, load/line regulation, output ripple, and switching waveform-under real-world conditions without requiring custom PCB design. The ADP5302-EVALZ includes all necessary passives, jumpers, and test points to validate the ADP5302 in battery-constrained applications.

Does the ADP5302-EVALZ support adjustable output voltage?

Yes, the ADP5302-EVALZ supports output voltage adjustment. By default, it delivers 1.8 V, but the output can be reconfigured using an external VID resistor network connected to the VID pin (J8 floating position), as specified in the ADP5302 datasheet. Jumper J8 also offers fixed 2.5 V or 3.0 V options when shorted to VIN or GND respectively.

How do I configure the ADP5302-EVALZ for PWM versus hysteresis mode?

Use jumper J6 to select the operating mode: connect J6 to VIN for PWM mode, to GND for hysteresis mode, or leave it unconnected to drive SYNC with an external clock source (1.2 MHz to 2.5 MHz). This configuration directly controls the ADP5302's internal control loop behavior and affects light-load efficiency and noise profile - critical for optimizing performance in intermittent-duty applications using the ADP5302-EVALZ.

What test points are provided on the ADP5302-EVALZ for measuring switching performance?

The ADP5302-EVALZ provides TP2 (SW node) and TP5 (GND_SNS) for observing the switching waveform with an oscilloscope, plus TP1 (VIN_SNS) and TP4 (VOUT_SNS) for accurate input/output voltage measurement. To minimize noise, the board recommends short ground leads and AC coupling at 10 mV/div and 2 µs/div for ripple analysis - enabling reliable validation of the ADP5302's transient response and stability under varying loads.

Is the ADP5302-EVALZ RoHS-compliant and ESD-protected?

Yes, the ADP5302-EVALZ complies with RoHS Directive 2011/65/EU and is labeled ESD-sensitive per ANSI/ESD S20.20. The board incorporates ESD-safe layout practices and carries an explicit warning that charged devices or circuit boards may discharge without detection. Users must observe proper ESD precautions during handling and probing to prevent degradation of the ADP5302 or surrounding components on the ADP5302-EVALZ.