Analog Devices Inc. ADP5061ACBZ-4-R7

Overview

ADP5061ACBZ-4-R7 from Analog Devices is a tiny, I²C-programmable linear battery charger IC with integrated power path management and USB Battery Charging Specification 1.2 compliance. It delivers up to 2.1 A system supply current in LDO mode, supports 4.0 V–6.7 V input voltage range with ±20 V tolerance, and features factory-programmable DIG_IO2/DIG_IO3 pins for charging enable/disable control specific to this variant.

For engineers reviewing the ADP5061ACBZ-4-R7 datasheet, ADP5061ACBZ-4-R7 pinout, ADP5061ACBZ-4-R7 application, or ADP5061ACBZ-4-R7 equivalent, key selection criteria include its 2.6 mm × 2.0 mm WLCSP package, JEITA-compliant temperature-aware charging, 30 mΩ battery isolation FET, programmable fast-charge current (750 mA typ), and dual-mode operation (charger + system LDO) with SYS_EN flag for battery-level–gated system startup.

Technical Context

The ADP5061ACBZ-4-R7 implements a fully integrated linear charging architecture with three independent VIN inputs (VIN1/VIN2/VIN3), three ISO_S/ISO_B power path channels, and factory-configured DIG_IO2/DIG_IO3 logic for charging enable/disable - distinguishing it from -2-R7 (DIG_IO2 disables IC1) and -5-R7 (DIG_IO3 is interrupt output). Its internal 30 mΩ isolation FET enables system power-up from USB even with dead or absent battery.

Charging behavior is governed by JEITA 1 or JEITA 2 profiles (selectable via I²C), with cold/hot thresholds at 0°C/60°C and programmable termination voltage (4.200 V nominal). Thermal regulation limits junction temperature to 115°C during isothermal charging, with shutdown at 140°C and early warning at 130°C.

Key Specifications

Pinout & Package

ADP5061ACBZ-4-R7 uses a 20-ball Wafer-Level Chip-Scale Package (WLCSP) with 0.5 mm pitch, measuring 2.6 mm × 2.0 mm. Ball-side-down top view places ILED at A4, AGND at B1, and DIG_IO3 (charging enable) at B4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BQ24075RGTR and MAX1555, ADP5061ACBZ-4-R7 provides superior integration: USB BC 1.2 auto-detection avoids external ID chips, JEITA 1/2 support enables safe wide-temperature charging, and 2.1 A LDO mode with 30 mΩ FET allows true power-path operation - making it optimal for compact, feature-rich portable electronics.

Availability

ADP5061ACBZ-4-R7 is available at Aetrix Electronics and suitable for mobile phones, digital cameras, portable medical devices, and PDAs requiring stable component supply, JEITA-compliant charging, and ultra-compact power management integration.

Supply support for ADP5061ACBZ-4-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 precision instrumentation, industrial automation, communications, and healthcare markets.

The ADP5061 product line delivers highly integrated, USB-compliant linear battery chargers with power path and JEITA temperature management - designed specifically for space-constrained, battery-powered portable electronics demanding robust USB charging and system reliability.

FAQ

What is the primary function of the DIG_IO3 pin on the ADP5061ACBZ-4-R7?

On the ADP5061ACBZ-4-R7, DIG_IO3 serves as the dedicated charging enable control pin. When driven high, it enables battery charging; when low or high-impedance, it disables charging - overriding I²C register settings until VIN is cycled. This hardware-level control simplifies system power sequencing and ensures fail-safe disable capability independent of firmware initialization.

How does the ADP5061ACBZ-4-R7 handle USB compliance without an external USB ID chip?

The ADP5061ACBZ-4-R7 supports USB Battery Charging Specification 1.2 natively through its programmable input current limit logic. While it relies on an external USB detection chip to identify source type (SDP/CDP/DCP), its I²C interface allows direct configuration of appropriate current limits (100 mA, 500 mA, 900 mA, or 1500 mA) - eliminating the need for additional logic to translate ID signals into charge control.

What is the significance of the 30 mΩ battery isolation FET in the ADP5061ACBZ-4-R7?

The 30 mΩ typical R_DS(ON) of the internal battery isolation FET in the ADP5061ACBZ-4-R7 enables efficient power path operation: it allows the system to draw up to 2.1 A directly from VIN while simultaneously charging the battery, and permits immediate system boot even with a completely discharged (0 V) battery - a critical capability for consumer electronics requiring instant responsiveness on USB connection.

Can the ADP5061ACBZ-4-R7 operate safely in high-temperature environments like automotive cabins?

The ADP5061ACBZ-4-R7 incorporates multi-stage thermal protection: isothermal charging begins at 115°C, early warning triggers at 130°C, and thermal shutdown occurs at 140°C. While its specified operating junction range is −40°C to +125°C, sustained ambient temperatures above 85°C require careful PCB thermal design (e.g., copper pour, thermal vias) - it is qualified for industrial, not automotive AEC-Q100, applications.

What are the key differences between ADP5061ACBZ-4-R7 and ADP5061ACBZ-2-R7?

The ADP5061ACBZ-4-R7 and ADP5061ACBZ-2-R7 share identical core functionality but differ in factory-programmed DIG_IO pin mapping: on the -4-R7, DIG_IO3 is configured as charging enable; on the -2-R7, DIG_IO2 is configured as IC1 disable. Both variants use the same WLCSP package and support identical I²C programming, JEITA profiles, and electrical specifications - the distinction is purely in default GPIO behavior.