Datasheet Linear Technology LTC3220EPF-1#PBF — Datenblatt

Hersteller	Linear Technology
Serie	LTC3220-1
Artikelnummer	LTC3220EPF-1#PBF

360mA Universal 18-Kanal LED-Treiber

Datenblätter

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PDF, 279 Kb, Revision: D, Datei hochgeladen: Sep 27, 2017

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Preise

Verpackung

Package	4x4 UTQFN-28
Package Code	PF
Package Index	05-08-1759

Parameter

Demo Boards	DC1265A-A,DC1265A-B
Export Control	no
Features	I2C Control
Frequency	850 kHz
Ishutdown	3.2 µA
Isupply	.580 mA
Max Number of LEDs	18 (parallel)
Monolithic	yes
Number of Outputs	18
Operating Temperature Range	0 to 85 °C
Output Current	0.36 A
Synchronous	no
Topology	Charge Pump, LED Driver
Vin Max	5.5 V
Vin Min	2.9 V
Vout Max	5.5 V

Öko-Plan

RoHS

Compliant

Andere Optionen

LTC3220

Anwendungshinweise

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LTC3220/LTC3220-1 UserвЂ™s Guide &mdash AN115
PDF, 224 Kb, Datei veröffentlicht: Feb 28, 2008
This application note illustrates how to program and use the unique features of the LTC3220/LTC3220-1 Universal LED (ULED) Driver. These features include individually controlling, gradually turning on and off, or blinking up to 18 LEDs. This device may also be used to provide digital signal(s) to other devices while in shutdown using a strong pull-down general purpose output (GPO) and an external power source. Current limited GPO mode may also be used to control other devices using the charge pump output (CPO) of the device or an external supply. A programmable shutdown feature allows the device to go into and out of shutdown returning to its pre-shutdown state. These features give the user vast п¬‚exibility and control of LEDs and other devices while saving memory space, programming time, I2C trafп¬Ѓc, and even battery power.
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Application Note 115
February 2008
LTC3220/LTC3220-1 UserвЂ™s Guide
by Marty Merchant INTRODUCTION power source. Current limited GPO mode may also be used
to control other devices using the charge pump output
(CPO) of the device or an external supply. A programmable
shutdown feature allows the device to go into and out
of shutdown returning to its pre-shutdown state. These
features give the user vast п¬‚exibility and control of LEDs
and other devices while saving memory space, programming time, I2C trafп¬Ѓc, and even battery power. This application note illustrates how to program and use
the unique features of the LTC3220/LTC3220-1 Universal
LED (ULED) Driver. These features include individually
controlling, gradually turning on and off, or blinking up to
18 LEDs. This device may also be used to provide digital
signal(s) to other devices while in shutdown using a strong
pull-down general purpose output (GPO) and an external L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Table 1. Features of LTC3220
FEATURE BENEFITS 18 Separate Outputs 18 Individually Controlled 20mA Current Sources with 64-Step Linear Dimming Control Blink Mode Blinks One of Four Blinking Patterns Gradation Gradually Turns On and Off LEDs GPO Mode (Strong) I2C Controlled Open Drain Drivers Operates in Shutdown, Low Q Current GPO Mode (Current Limited) I2C Controlled Open Drain Drivers with Adjustable Current Limit External Reset Resets All Internal Registers and Forces Part into Shutdown Programmable Shutdown I2C Controlled Shutdown Data Registers Retain Data and Outputs Return to Previous State when Shutdown Terminates Auto Switching Charge Pump Automatically Switches to 1x, 1.5x, or 2x Modes for Better Efп¬Ѓciency Forced Charge Pump Mode May Be Programmed to Remain in 1x, 1.5x, or 2x Mode C2
2.2ОјF C3
2.2ОјF C1P C1M C2P C2M
VIN
C1
2.2ОјF VIN DVCC DVCC CPO …

Modellreihe

Serie: LTC3220-1 (4)

LTC3220EPF-1#PBF LTC3220EPF-1#TRPBF LTC3220IPF-1#PBF LTC3220IPF-1#TRPBF

Herstellerklassifikation

Power Management > Inductorless (Charge Pump) DC/DC Converters > Inductorless (Charge Pump) LED Drivers

Andere Namen:

LTC3220EPF-1PBF, LTC3220EPF-1 PBF, LTC3220EPF1#PBF, LTC3220EPF 1#PBF