DatasheetsPDF.com

ADP8866

Analog Devices
Part Number ADP8866
Manufacturer Analog Devices
Description Charge Pump Driven 9-Channel LED Driver
Published Mar 5, 2017
Detailed Description Data Sheet Charge Pump Driven 9-Channel LED Driver with Automated LED Lighting Effects ADP8866 FEATURES Charge pump wi...
Datasheet PDF File ADP8866 PDF File

ADP8866
ADP8866

Overview
Data Sheet Charge Pump Driven 9-Channel LED Driver with Automated LED Lighting Effects ADP8866 FEATURES Charge pump with automatic gain selection of 1×, 1.
5×, and 2× for maximum efficiency 92% peak efficiency 9 independent and programmable LED drivers Each driver is capable of 25 mA (full scale) Each driver has 7 bits (128 levels) of nonlinear current settings Standby mode for <1 µA current consumption 16 programmable fade-in and fade-out times (0.
0 sec to 1.
75 sec) with choice of square or cubic rates Automated and customizable LED blinking Unique heartbeat mode for programmable double pulse lighting effects on 4 channels (D6 to D9) PWM input for implementing content adjustable brightness control (cABC) 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 Operates down to VIN = 2.
5 V, with undervoltage lockout (UVLO) at 1.
9 V Small lead frame chip scale package (LFCSP) GENERAL DESCRIPTION The ADP8866 combines a programmable backlight LED charge pump driver with automatic blinking functions.
Nine LED drivers can be independently programmed at currents up to 25 mA.
The current level, fade time, and blinking rate can be programmed once and executed autonomously on a loop.
Separate fade-in and fade-out times can be set for the backlight LEDs.
APPLICATIONS Mobile display backlighting Mobile phone keypad backlighting LED indication and status lights Automated LED blinking TYPICAL OPERATING CIRCUIT VIN 1µF nRST SDA SCL nINT GND D1 D2 D3 D4 D5 D6 D7 D8 D9 ADP8866 Figure 1.
VOUT 1µF C1+ C1 C1– 1µF C2+ C2 C2– 1µF Driving all of this is a two-capacitor charge pump with gains of 1×, 1.
5×, and 2×.
This setup is capable of driving a maximum IOUT 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 overtemperat...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)