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Application Note: AS3661 Programmable 9-channel LED Driver
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Revision 2.0 / 2011/06/16
Application Note: AS3661 AN01
Evalboard 4v1 Description
1. General Description
The AS3661 is a 9-channel LED driver designed to produce lighting effects for mobile
devices. A high-efficiency charge pump enables LED driving over full Li-Ion battery
voltage range. The device is equipped with an internal program memory, which allows
operation without processor control. The AS3661 maintains excellent efficiency over a
wide operating range by autonomously selecting the best charge pump gain based on
LED forward voltage requirements. AS3661 is able to automatically enter power-save
mode when LED outputs are not active, thus lowering idle current consumption sown
to 10uA (typ).
AS3661
Programmable 9-channel LED Driver
AS3661 – AN01 – Demoboard
Application Note: Evaluation Board Guide
www.ams.com Revision 2.0 / 6/22/12
page 1/10
Table of Contents
0
1.
General Description ............................................................................................................... 0
2.
Further Applications ............................................................................................................... 2
3.
Revision Status ...................................................................................................................... 2
4.
Getting Started HW & SW ..................................................................................................... 2
5.
Jumper Descriptions .............................................................................................................. 3
6.
Application Schematic ........................................................................................................... 4
7.
Layout – 3D Top .................................................................................................................... 5
8.
Layout – 3D Bottom ............................................................................................................... 5
9.
Layout – Top Layer ................................................................................................................ 6
10.
Layout – Inner Layer1 ............................................................................................................ 7
11.
Layout – Inner Layer2 ............................................................................................................ 8
12 Layout – Bottom Layer ............................................................................................................. 9
Copyright ..................................................................................................................................... 10
Disclaimer ................................................................................................................................... 10
AS3661 – AN01 – Demoboard
Application Note: Evaluation Board Guide
www.ams.com Revision 2.0 / 6/22/12
page 2/10
2. Further Applications
Visit our website for further information www.ams.com
3. Revision Status
AS3661 – AN01 Eval Board – for Evalboard 4v1
4. Getting Started HW & SW
1) Install the AS3661 EvalSW from the USB Flash Memory onto your Computer
2) Connect the Battery to the VBAT and GND connectors of the Board
3) Connect the USBBox with the Computer
4) Connect the USBBox with the 6-pin Header cable & connect the cable to
Connector J1.
AS3661 – AN01 – Demoboard
Application Note: Evaluation Board Guide
www.ams.com Revision 2.0 / 6/22/12
page 3/10
5. Jumper Descriptions
Jumper Function Jumper
Setting
Comment
J25 VBAT = VUSB open Do not connect Battery & USB at the
same time!
J6 VBAT = VEN closed To connect VEN to VBAT
J2 INT pull-up closed Enables the pull-up resistor for INT
J4 TRIG pull-up closed Enables the pull-up resistor for TRIG
J5 I2C Pull-ups closed Connected from I2C Pull-up to VBAT
J23 White LED GND closed Connect the WHITE LEDs to GND
J22 RGB LED GND open Connect the RGB LEDs to GND
J7 VDD CLK open Supply’s the Oscillator
J8 CLK OUT closed Connects the Oscillator with the IC
AS3661 – AN01 – Demoboard
Application Note: Evaluation Board Guide
www.ams.com Revision 2.0 / 6/22/12
page 4/10
6. Application Schematic
AS3661 – AN01 – Demoboard
Application Note: Evaluation Board Guide
www.ams.com Revision 2.0 / 6/22/12
page 5/10
7. Layout – 3D Top
8. Layout – 3D Bottom
AS3661 – AN01 – Demoboard
Application Note: Evaluation Board Guide
www.ams.com Revision 2.0 / 6/22/12
page 6/10
9. Layout – Top Layer
AS3661 – AN01 – Demoboard
Application Note: Evaluation Board Guide
www.ams.com Revision 2.0 / 6/22/12
page 7/10
10. Layout – Inner Layer1
AS3661 – AN01 – Demoboard
Application Note: Evaluation Board Guide
www.ams.com Revision 2.0 / 6/22/12
page 8/10
11. Layout – Inner Layer2
AS3661 – AN01 – Demoboard
Application Note: Evaluation Board Guide
www.ams.com Revision 2.0 / 6/22/12
page 9/10
12 Layout – Bottom Layer
AS3661 – AN01 – Demoboard
Application Note: Evaluation Board Guide
www.ams.com Revision 2.0 / 6/22/12
page 10/10
Copyright
Copyright © 1997-2012, ams AG, Tobelbader Strasse 30, 8141 Unterpremstaetten, Austria-Europe.
Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged,
translated, 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.
Disclaimer
Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its
Term of Sale. ams AG makes no warranty, express, statutory, implied, or by description regarding the
information set forth herein or regarding the freedom of the described devices from patent infringement. ams
AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to
designing this product into a system, it is necessary to check with ams AG for current information.
This product is intended for use in normal commercial applications. Applications requiring extended
temperature range, unusual environmental requirements, or high reliability applications, such as military,
medical life-support or life sustaining equipment are specifically not recommended without additional
processing by ams AG for each application. For shipments of less than 100 parts the manufacturing flow might
show deviations from the standard production flow, such as test flow or test location.
The information furnished here by ams AG is believed to be correct and accurate. However, ams AG shall not
be liable to recipient or any third party for any damages, including but not limited to personal injury, property
damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential
damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical
data herein. No obligation or liability to recipient or any third party shall arise or flow out of ams AG rendering of
technical or other services.
Contact Information
Headquarters
ams AG
Tobelbader Strasse 30
8141 Unterpremstaetten
Austria
T. +43 (0) 3136 500 0
For Sales Offices, Distributors and Representatives, please visit:
http://www.ams.com/contact
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