ADP8861

PRODUCTION

Charge Pump, 7-Channel Smart LED Driver with I²C Interface

Data Sheet (Rev. C) Product Selection Table

Part Models: 2
1ku List Price: Starting From $1.17

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Overview

Charge pump with automatic gain selection of 1×, 1.5×, and 2× for maximum efficiency
7 independent, programmable LED drivers

7 drivers capable of 30 mA (typical)
1 driver also capable of 60 mA (typical)

Programmable maximum current limit (128 levels)
Standby mode for <1 μA current consumption
16 programmable fade in and fade out time

0.1 sec to 5.5 sec
Choose from linear, square, or cubic rates

Fading override
I²C-compatible interface for all programming

Dedicated reset pin and built-in power-on reset (POR)
Short-circuit, overvoltage, and overtemperature protection
Internal soft start to limit inrush currents
Input-to-output isolation during faults or shutdown
Operation down to V_IN = 2.5 V with undervoltage lockout (UVLO) at V_IN = 2.0 V
Available in a small 20-ball, 2.15 mm × 2.36 mm × 0.6 mm WLCSP or a 20-lead, 4 mm × 4 mm × 0.75 mm LFCSP

The ADP8861 provides a powerful charge pump driver with independent control of up to seven LEDs. These seven LEDs can be independently driven up to 30 mA (typical). The seventh LED can also be driven to 60 mA (typical). All LEDs are programmable for maximum current and fade in/out times via the I²C interface. These LEDs can also be combined into groups to reduce the processor instructions during fade in/out.

This entire configuration is driven by a two-capacitor charge pump with gains of 1×, 1.5×, and 2×. The charge pump is capable of driving a maximum I_OUT of 240 mA from a supply of 2.5 V to 5.5 V. A full suite of safety features, including short-circuit, overvoltage, and overtemperature protection, allows easy implementation of a safe and robust design. Additionally, input inrush currents are limited via an integrated soft start combined with controlled input-to-output isolation.

APPLICATIONS

Mobile display backlighting
Mobile phone keypad backlighting
Dual RGB backlighting
LED indication
General backlighting of small format displays

Part Models: 2
1ku List Price: Starting From $1.17

Documentation

Data Sheet 1

ADP8861: Charge Pump, 7-Channel Smart LED Driver with I2C Interface Data Sheet (Rev.C) 04/23/2010

User Guide 2

UG-005: Software User Guide 07/24/2009

UG-1888: Evaluating the ADP8860/ADP8861 Charge Pump, 7-Channel Smart LED Driver with I²C Interface 12/20/2021

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADP8861ACBZ-R7	20-Ball WLCSP (1.955m x 2.355mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP8861ACPZ-R7	20-Lead LFCSP (4mm x 4mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 28, 2012 - 11_0175 Shipping Changes for WLCSP Products with 8mm Carrier Tape Width
		PCN11_0175_Form Material_Report Qualification Report Summary Detailed Parts List
ADP8861ACBZ-R7	PRODUCTION
Oct 21, 2016 - 16_0229 Assembly Transfer of Select LFCSP Products to ASE Korea
		PCN16_0229_Form Material_Report Detailed Change Description Detailed Change Description Qualification Results Summary
ADP8861ACPZ-R7	PRODUCTION
May 11, 2014 - 13_0231 Assembly Transfer of Select 4x4 and 5x5mm LFCSP Products to STATS ChipPAC China.
		PCN13_0231_Form Material_Report Detailed Change Description Qualification Report Summary
ADP8861ACPZ-R7	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluating the ADP8861 Charge Pump, 7-Channel Smart LED Driver with I2C Interface

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Features and Benefits

Arduino compatible
Backlight array
Keypad backlight array
Dedicated reset button
Dedicated header for I²C communications

Product Details

The ADP8860SHIELD-EVALZ and the ADP8861SHIELD-EVALZ incorporate light emitting diodes (LEDs) for quick and easy evaluation of the ADP8860 and the ADP8861. Note that only the ADP8860SHIELD-EVALZ has dual light intensity sensors. The ADP8860SHIELD-EVALZ and the ADP8861SHIELD-EVALZ follow the form factor of a regular Arduino^® shield to allow compatibility with microcontroller boards that use the same interface. These evaluation boards also incorporate a separate header dedicated to I²C communications.

The ADP8860 and the ADP8861 are 7-channel LED drivers that utilizes a charge pump with selective gain for maximum efficiency. The LEDs driven by either device are programmable for maximum current and fade in and out times via the I²C interface. Only the ADP8860 has a programable light intensity threshold that can be set via the I²C interface of the device. Each channel can handle up to 30 mA (typical), except for the seventh channel, which can handle 60 mA (typical). Each channel can be unified to have the same fade in time and fade out time, or each channel can have an individual fade in time and fade out time for greater flexibility.

For full details on the ADP8860 and the ADP8861, see the ADP8860 and the ADP8861 data sheets, which should be consulted in conjunction with the user guide when using these evaluation boards.

Resources

UG-1888: Evaluating the ADP8860/ADP8861 Charge Pump, 7-Channel Smart LED Driver with I²C Interface
12/20/2021

Software

ADP8860/1 Evaluation Board Software Package
58.98 M

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