Analog Devices Inc. ADP5090ACPZ-2-R7

Overview

ADP5090ACPZ-2-R7 from Analog Devices is an ultralow power boost regulator with integrated MPPT, cold-start capability (380 mV typical), 320 nA quiescent current (CBP ≥ MINOP), and programmable energy storage management for Li-ion, thin-film batteries, or supercapacitors. It enables self-powered wireless sensor nodes harvesting from photovoltaic cells or thermoelectric generators.

For engineers reviewing the ADP5090ACPZ-2-R7 datasheet, ADP5090ACPZ-2-R7 pinout, ADP5090ACPZ-2-R7 application, or ADP5090ACPZ-2-R7 equivalent, key selection considerations include cold-start voltage threshold, MPPT ratio configurability, battery termination voltage range (2.2 V to 5.2 V), PGOOD flag behavior, and LFCSP-16 package thermal resistance (θJA = 53.1°C/W).

Technical Context

The ADP5090ACPZ-2-R7 implements a hysteretic synchronous boost controller operating in pulse frequency mode (PFM) with integrated high-side and low-side MOSFETs (RHS_DS_ON = 1.38 Ω typ, RLS_DS_ON = 1.25 Ω typ). Its cold-start circuit uses a charge pump to bootstrap operation from 380 mV input, enabling energy harvesting from ultra-low-power sources like TEGs or dim-light PV cells.

MPPT is implemented via periodic open-circuit voltage (OCV) sampling every 19 s (296 ms sampling window), storing the scaled VIN OCV on CBP capacitor to regulate input voltage at maximum power point. The MINOP pin disables boost when harvested power falls below programmable threshold, reducing quiescent current to 260 nA (CBP < MINOP).

Key Specifications

Pinout & Package

ADP5090ACPZ-2-R7 is housed in a 16-lead, 3 mm × 3 mm LFCSP package with exposed pad connected to AGND. Pin functions are validated per Analog Devices Rev. C datasheet Figure 2 and Table 4.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultralow-power energy harvesting regulator applications.

Compared with LTC3108IDC#TRMPBF and BQ25504RGTT, ADP5090ACPZ-2-R7 uniquely combines true 380 mV cold-start, field-programmable MPPT ratio, and triple-source power path arbitration - making it the only choice for fully autonomous, long-life sensor nodes deployed in variable-light or low-ΔT environments.

Availability

ADP5090ACPZ-2-R7 is available at Aetrix Electronics and suitable for photovoltaic energy harvesting, thermoelectric generator systems, and self-powered wireless sensor networks requiring stable component supply across industrial temperature ranges and multi-year field deployments.

Supply support for ADP5090ACPZ-2-R7 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

The ADP5090ACPZ-2-R7 belongs to Analog Devices' energy harvesting PMIC product line, designed specifically to enable maintenance-free, batteryless operation of IoT edge sensors by maximizing power extraction from ambient sources.

FAQ

What is the minimum input voltage required for cold-start operation of the ADP5090ACPZ-2-R7?

The ADP5090ACPZ-2-R7 achieves cold-start operation from a minimum input voltage of 380 mV (typical) at the VIN pin when the SYS voltage is below 1.93 V. This is enabled by an internal charge-pump circuit that bootstraps the regulator without external assistance. The ADP5090ACPZ-2-R7 datasheet specifies this value under VSYS = 0 V and 0°C < TA < 85°C conditions, with a maximum of 440 mV across temperature.

How does the ADP5090ACPZ-2-R7 implement maximum power point tracking (MPPT)?

The ADP5090ACPZ-2-R7 implements MPPT by periodically sampling the open-circuit voltage (OCV) at the VIN pin every 19 seconds for 296 ms, scaling it via a resistor divider on the MPPT pin, and storing the result on the CBP capacitor. This held voltage becomes the regulation reference for the boost controller. The ADP5090ACPZ-2-R7 supports configurable ratios - e.g., 80% for PV cells and 50% for TEGs - ensuring optimal power extraction without external microcontroller intervention.

Can the ADP5090ACPZ-2-R7 manage both rechargeable and primary battery sources simultaneously?

Yes, the ADP5090ACPZ-2-R7 integrates a dual-path power management architecture that autonomously arbitrates among three sources: harvested energy (VIN), rechargeable storage (BAT), and optional primary cell (BACK_UP). When SYS voltage drops below 1.5 V (typ), the BACK_UP path activates if its voltage exceeds BAT by >185 mV (typ), providing seamless fallback without firmware or external switches. This functionality is intrinsic to the ADP5090ACPZ-2-R7's internal power path controller.

What is the quiescent current of the ADP5090ACPZ-2-R7 under active and sleep conditions?

The ADP5090ACPZ-2-R7 delivers 320 nA typical quiescent current when CBP ≥ MINOP (active MPPT mode) and reduces to 260 nA typical when CBP < MINOP (sleep mode). These values are measured at the SYS pin with VIN > VCBP and VSYS > VBAT_SD. The ADP5090ACPZ-2-R7 achieves this ultra-low IQ through a combination of hysteretic control, optimized gate drive, and dynamic circuit disabling - critical for multi-year operation in energy-constrained nodes.

Is the ADP5090ACPZ-2-R7 compatible with supercapacitors as energy storage?

Yes, the ADP5090ACPZ-2-R7 explicitly supports supercapacitors (≥100 µF) connected to the BAT pin, as confirmed in the General Description and Theory of Operation sections of its datasheet. Its charge management includes programmable termination (2.2 V to 5.2 V) and discharging cutoff (VBAT_SD), while low leakage (<20 nA at 3.3 V) prevents self-discharge. The ADP5090ACPZ-2-R7's SYS switch on-resistance (0.48 Ω typ) ensures efficient delivery to loads without excessive droop.