Analog Devices Inc. ADP8860ACPZ-R7

Overview

ADP8860ACPZ-R7 from Analog Devices is a 7-channel smart LED charge pump driver with I²C interface, automatic gain selection (1×/1.5×/2×), dual ambient light sensing inputs, and programmable fade timing (0.1–5.5 sec). It delivers up to six 30 mA sinks and one 60 mA sink for mobile display backlighting under varying ambient light conditions.

For engineers reviewing the ADP8860ACPZ-R7 datasheet, ADP8860ACPZ-R7 pinout, ADP8860ACPZ-R7 application, or ADP8860ACPZ-R7 equivalent, this page provides verified technical context, exact pin functions, real-world operating modes, confirmed protection features, and validated alternative options for backlight power management in space-constrained portable designs.

Technical Context

The ADP8860ACPZ-R7 integrates a two-capacitor charge pump with automatic gain switching based on real-time current sink headroom voltage (VHR), ensuring optimal efficiency across 2.5 V–5.5 V input range. Its I²C-controlled register set enables independent programming of seven LED sinks, fade profiles, and ambient light thresholds.

It features dual comparator inputs (CMP_IN and D6/CMP_IN2) with programmable ALS current (1.08 mA typ), dedicated nRST with 50 µs noise filter, and fault isolation logic that disconnects VIN from VOUT during short-circuit, overvoltage (5.8 V), or thermal shutdown (150 °C).

Key Specifications

Pinout & Package

ADP8860ACPZ-R7 is packaged in a 2 mm × 2.4 mm × 0.6 mm wafer-level chip scale package (WLCSP) with 20-ball configuration and exposed paddle connected to GND1/GND2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED driver applications.

Compared with LM3530UMX/NOPB and TPS61165DRVR, the ADP8860ACPZ-R7 uniquely combines 7-channel flexibility, dual ALS inputs, automatic gain optimization, and ultra-low standby current - making it the only option among the three suitable for intelligent, multi-zone backlight systems in battery-powered handheld devices.

Availability

ADP8860ACPZ-R7 is available at Aetrix Electronics and suitable for mobile display backlighting, keypad illumination, dual RGB backlighting, and LED indication requiring stable component supply across high-mix, low-volume production runs.

Supply support for ADP8860ACPZ-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 consumer markets since 1965.

The ADP8860ACPZ-R7 belongs to Analog Devices' Smart LED Driver product line, designed specifically for energy-efficient, software-configurable backlight and indicator control in portable electronics with stringent size and power constraints.

FAQ

What is the maximum total output current supported by the ADP8860ACPZ-R7?

The ADP8860ACPZ-R7 supports a maximum combined output current of 240 mA - achieved by driving six 30 mA sinks (D1–D6) and one 60 mA sink (D7) simultaneously. This limit assumes proper thermal management and valid charge pump gain selection per the device's automatic gain algorithm. The actual achievable current depends on input voltage, LED forward voltage, and ambient temperature.

Does the ADP8860ACPZ-R7 require external components for basic operation?

Yes, the ADP8860ACPZ-R7 requires four external capacitors: one 1 µF input capacitor (CIN), one 1 µF output capacitor (COUT), and two 1 µF flying capacitors (C1 and C2) for the charge pump. Optional 0.1 µF capacitors are needed on CMP_IN and D6/CMP_IN2 if ambient light sensing is used. Pull-up resistors on SCL and SDA are also mandatory for I²C communication.

How does the ADP8860ACPZ-R7 handle thermal overload?

The ADP8860ACPZ-R7 includes integrated thermal shutdown protection that activates at 150 °C junction temperature, with 20 °C hysteresis. When triggered, the device disables all LED sinks and isolates VOUT from VIN to prevent damage. Operation resumes automatically once the junction cools below 130 °C. No external thermal sensor or intervention is required.

Can the ADP8860ACPZ-R7 drive LEDs with different forward voltages simultaneously?

Yes, the ADP8860ACPZ-R7 can drive LEDs with differing forward voltages (e.g., white + red) simultaneously because each of the seven sinks operates independently with its own current regulation. The charge pump automatically adjusts gain to ensure sufficient headroom (≥200 mV) across all active sinks, regardless of individual V_f mismatch - enabling mixed-color backlight designs without external compensation.

Is the ADP8860ACPZ-R7 pin-compatible with other members of the ADP886x family?

No, the ADP8860ACPZ-R7 is not pin-compatible with ADP8861, ADP8863, or ADP8866. While sharing functional similarities, these variants differ in pin count, ball layout, and specific feature sets (e.g., number of ALS inputs, sink current ratings, package type). The ADP8860ACPZ-R7 uses a unique 20-ball WLCSP footprint defined in its datasheet Figure 4 and must be laid out accordingly.