Analog Devices Inc. ADP5065ACBZ-1-R7

Overview

ADP5065ACBZ-1-R7 from Analog Devices is a fully I²C-programmable, 3 MHz switch-mode battery manager for single-cell Li-ion/Li-polymer batteries, delivering up to 1.25 A fast charge current from dedicated chargers and 680 mA from 500 mA USB hosts, with integrated Power Path management, dead-battery isolation FET, and JEITA-compliant thermistor-based temperature control. It enables immediate system power-up even with zero-battery voltage.

For engineers reviewing the ADP5065ACBZ-1-R7 datasheet, ADP5065ACBZ-1-R7 pinout, ADP5065ACBZ-1-R7 application, or ADP5065ACBZ-1-R7 equivalent, key selection considerations include USB 2.0/3.0/BC 1.1 compliance, 4.0–5.5 V operating input range with −0.5 V to +20 V tolerance, programmable termination voltage (4.200 V ±0.3%), and 20-lead WLCSP package integration for space-constrained portable designs.

Technical Context

The ADP5065ACBZ-1-R7 implements a synchronous buck converter with 3 MHz fixed-frequency switching, 96% maximum duty cycle, and dual high-side PMOS/NMOS power FETs (R_DS(ON) = 220 mΩ / 160 mΩ). Its Power Path architecture separates system rail (ISO_Sx) from battery (ISO_Bx) via an internal 76–115 mΩ isolation FET, enabling simultaneous charging and system operation.

It integrates I²C-compatible interface (400 kHz), battery voltage sensing (BAT_SNS), thermistor monitoring (THR), and dual VIN inputs (VIN1/VIN2) with ±20 V tolerant high-voltage blocking FET (R_DS(ON) = 340–455 mΩ). Charge sequencing includes trickle (20 mA), weak (ICHG + 20 mA), and fast CC/CV modes with C/20 EOC detection and 36–44 min safety timer.

Key Specifications

Pinout & Package

ADP5065ACBZ-1-R7 is housed in a 20-lead Wafer-Level Chip-Scale Package (WLCSP) measuring 2.75 mm × 2.08 mm with 0.5 mm pitch, optimized for ultra-thin portable devices. The package features dual ground balls (PGND1/PGND2), dual VIN inputs, dual ISO_S/ISO_B paths, and dedicated thermistor/battery sense pins for robust layout separation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar battery management applications.

Compared with BQ24075RGTR and MAX1555EUT+, the ADP5065ACBZ-1-R7 uniquely delivers I²C-programmable JEITA thermal control, 3 MHz switching for compact magnetics, and true Power Path enabling system operation from USB with zero-battery voltage - critical for consumer electronics requiring robust field reliability.

Availability

ADP5065ACBZ-1-R7 is available at Aetrix Electronics and suitable for digital still cameras, mobile phones, and portable GPS devices requiring stable component supply, long-term lifecycle support, and guaranteed USB BC 1.1 compliance.

Supply support for ADP5065ACBZ-1-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and a legacy of precision power management innovation.

The ADP5065ACBZ-1-R7 belongs to Analog Devices' USB-compliant battery management product line, engineered specifically for space-constrained portable Li-ion systems demanding integrated Power Path, JEITA thermal safety, and I²C configurability without external detection ICs.

FAQ

What is the primary function of the ADP5065ACBZ-1-R7 in a portable device?

The ADP5065ACBZ-1-R7 serves as a fully integrated USB-compliant battery manager with Power Path functionality. It enables simultaneous battery charging and system operation, supports dead-battery boot via the ISO_Sx rail, and enforces JEITA-compliant thermal limits. Its 3 MHz switching architecture minimizes external component count, making it ideal for compact digital cameras, smartphones, and GPS units where board space and thermal performance are critical.

Does the ADP5065ACBZ-1-R7 support USB Battery Charging Specification 1.1?

Yes, the ADP5065ACBZ-1-R7 is explicitly designed to comply with USB Battery Charging Specification 1.1, as well as USB 2.0 and USB 3.0 standards. It achieves this through dual VIN inputs with ±20 V tolerance, programmable input current limits (100 mA/500 mA), and compatibility with external USB detection chips that configure its charging behavior based on source type - ensuring safe, specification-conformant operation across wall adapters, hosts, and hubs.

How does the Power Path architecture of the ADP5065ACBZ-1-R7 improve system reliability?

The ADP5065ACBZ-1-R7's Power Path uses an internal 76–115 mΩ battery isolation FET to decouple the system rail (ISO_Sx) from the battery (ISO_Bx). This allows the system to power on immediately when USB is connected-even with a 0 V battery-by regulating ISO_Sx to 3.3 V. It also prevents reverse current flow and enables seamless transitions between battery and USB power, eliminating brownouts during plug/unplug events and extending usable runtime in mixed-power scenarios.

Can the ADP5065ACBZ-1-R7 be configured for different battery termination voltages?

Yes, the ADP5065ACBZ-1-R7 supports I²C-programmable battery termination voltage with 1% accuracy. While the default is 4.200 V ±0.3%, the register map allows setting values such as 3.50 V, 3.80 V, or 4.42 V depending on battery chemistry and aging compensation requirements. This configurability ensures optimal cell longevity and safety across diverse Li-ion formulations without hardware changes.

What thermal protection mechanisms are implemented in the ADP5065ACBZ-1-R7?

The ADP5065ACBZ-1-R7 integrates three-tier thermal protection: isothermal regulation at 115°C (reducing charge current to prevent overheating), early warning at 130°C, and thermal shutdown at 140°C (with 110°C hysteresis). It also supports JEITA-compliant NTC thermistor monitoring across five temperature zones (0°C–60°C), automatically halting charge outside safe ranges. These features ensure compliance with IEC 62133 and prevent thermal runaway in portable enclosures.