AS3665 austriamicrosystems, AS3665 Datasheet

AS3665

Manufacturer Part Number

AS3665

Description

IC, LED DRIVER, CHARGE PUMP, WLCSP-25

Manufacturer

austriamicrosystems

Datasheet

1.AS3665.pdf (2 pages)

Specifications of AS3665

Led Driver Application

Mobile Phones, Lighting Management Unit

No. Of Outputs

Output Current

25mA

Input Voltage

2.5V To 5.5V

Dimming Control Type

PWM / I2C

Topology

Charge Pump

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

H&T Electronics

Part Number:

AS3665-ZWLT

Quantity:

9 792

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A S 3 6 6 5

9 Channel Advanced Command Driven RGB/White LED Driver

1 General Description

The AS3665 is a capacitive low noise charge pump with

9 current sources. The charge pump automatically

switches between 1:1 and 1:1.5 modes. The connected

current sources have a very low voltage compliance to

improve efficiency of the whole system. Three current

sources have the possibility to operate either from VBAT

or VCP (especially useful for red LEDs).

The internal control is done by command based pattern

generators implemented by three sequencers. These

commands are optimized for lighting applications (e.g.

ramp up brightness logarithmically). It includes high

level commands like conditionals jumps and variables.

Any of the three sequencers can be dynamically

mapped to any of the 9 PWM generators for the LEDs.

The AS3665 supports an audio input and sophisticated

light patterns can be controlled by internal digital filters.

The AS3665 is controlled by I

over several AS3665 is possible by the TRIG pin.

The AS3665 is available in a space-saving WL-CSP-25

(2.5x2.5mm) 0.5mm pitch and operates over the -30ºC

to +85ºC temperature range.

Figure 1. Typical Operating Circuit

www.austriamicrosystems.com (ptr)

C mode. Synchronization

Revision 1.0

2 Key Features

3 Applications

RGB/White Fun or Event LED for mobile phones or por-

table devices; Lighting Management Unit

AS3665

- Less than 50mV at 10mA dropout voltage

- LED7,8,9 either powered by VBAT or VCP

- 96 x 16 bits program memory

- Dedicated lighting commands like logarithmic fade

- Programming control and conditional jumps

- Dynamically mapped to 9 PWM generators

- Internal/External Synchronization

- Automatic RGB Color Correction by T

High efficiency capacitive 150mA charge pump with

1:1, 1:1.5 and 1:2 modes with automatic mode

switching; 1:2 mode can be disabled

9 Channel High Side 20mA Current sources

Advanced Command based Pattern Generator

Audio Controlled Lighting with internal digital filters

3 Sequencers

9 PWM generators (12 bit resolution)

Available in WL-CSP-25 (2.5x2.5mm) 0.5mm pitch

C interface with dedicated EN pin

Product Brief

AMB

1 - 2

Related parts for AS3665

AS3665 Summary of contents

Page 1

... Channel Advanced Command Driven RGB/White LED Driver 1 General Description The AS3665 is a capacitive low noise charge pump with 9 current sources. The charge pump automatically switches between 1:1 and 1:1.5 modes. The connected current sources have a very low voltage compliance to improve efficiency of the whole system. Three current sources have the possibility to operate either from VBAT or VCP (especially useful for red LEDs) ...

Page 2

... AS3665 Product Brief Copyrights Copyright © 1997-2009, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, trans- lated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. ...

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