Distributing Tomorrow’s Technologies For Today’s Designs
Toll-Free: 1-800-777-7334
Since 1970
http://www.cdiweb.com/PortalMain.aspx?pid=704
Kit Description
Rev. 1.0 / December 2010
ZLED7012
ZLED7012KIT-E1 Evaluation Kit
Toll-Free: 1-800-777-7334
E-Mail: sales@cdiweb.com
Web: www.cdiweb.com/PortalMain.aspx?pid=704
Component Distributors Inc. (CDI)
Distributing Tomorrow’s Technologies For Today’s Designs
Toll-Free: 1-800-777-7334
Since 1970
http://www.cdiweb.com/PortalMain.aspx?pid=704
ZLED7012
ZLED7012KIT-E1 Evaluation Kit
Important Notice
Restrictions in Use
ZMDI’s ZLED7012KIT-E1 Evaluation Kit hardware and software are designed for ZLED7012 evaluation,
laboratory setup, and module development only. The ZLED7012KIT-E1 Evaluation Kit hardware and soft-
ware must not be used for module production or production test setups.
Disclaimer
Zentrum Mikroelektronik Dresden AG (ZMD AG) shall not be liable for any damages arising out of defects
resulting from
(i)
delivered hard- and software
(ii)
non-observance of instructions contained in this manual and in any other documentation provided to
user, or
(iii) misuse, abuse, use under abnormal conditions or alteration by anyone other than ZMD AG.
To the extent permitted by law, ZMD AG hereby expressly disclaims and user expressly waives any and
all warranties, whether express, implied or statutory, including, without limitation, implied warranties of
merchantability and of fitness for a particular purpose, statutory warranty of non-infringement and any
other warranty that may arise by reason of usage of trade, custom or course of dealing.
Contents
1
2
Kit Contents ...................................................................................................................................................3
Kit Description ...............................................................................................................................................3
2.1.
Overview .................................................................................................................................................3
2.2.
Power Supply..........................................................................................................................................3
2.3.
Interface and Setting Options .................................................................................................................4
2.4.
Demo Mode ............................................................................................................................................5
2.5.
Manual Mode ..........................................................................................................................................5
2.6.
Schematic Diagram ................................................................................................................................6
Ordering Information .....................................................................................................................................7
Related Documents .......................................................................................................................................7
Glossary ........................................................................................................................................................7
Document Revision History ...........................................................................................................................7
3
4
5
6
List of Figures
Figure 2.1
Figure 2.2
ZLED7012KIT-E1 Evaluation Board (Top View) .............................................................................4
ZLED7012KIT-E1 Schematic Diagram ............................................................................................6
List of Tables
Table 2.1
Current Output Settings ...................................................................................................................5
Evaluation Kit
December 8, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without
notice.
2 of 7
Toll-Free: 1-800-777-7334
E-Mail: sales@cdiweb.com
Web: www.cdiweb.com/PortalMain.aspx?pid=704
Component Distributors Inc. (CDI)
Distributing Tomorrow’s Technologies For Today’s Designs
Toll-Free: 1-800-777-7334
Since 1970
http://www.cdiweb.com/PortalMain.aspx?pid=704
ZLED7012
ZLED7012KIT-E1 Evaluation Kit
1
Kit Contents
The ZLED7012KIT-E1 Evaluation Kit consists of the following parts:
ZLED7012-E1 Evaluation Board VX.x
USB cable male A / male Mini-B
Five ZLED7012 samples, UTQFN package (2mm×2mm)
ZLED7012KIT-E1 Evaluation Kit Start-up Information
Kit Disclaimer
The ZLED7012KIT-E1 Evaluation Kit is fully assembled and ready for immediate operation.
2
2.1.
Kit Description
Overview
The ZLED7012KIT-E1 Evaluation Kit provides a quick and easy method for evaluating the ZLED7012 within
its basic application circuit. An on-board generator demonstrates the ZLED7012’s Pulse Count Control (PCC)
digital brightness control feature. Reading the
ZLED7012 Data Sheet
before using the Evaluation Kit is
recommended for understanding the operation of the ZLED7012 and the Evaluation Board.
The ZLED7012 is a low-noise, constant-frequency charge pump DC/DC converter that can drive up to four
LED channels, providing a programmable constant current level ranging from 1.8mA to 20mA per LED
channel. The ZLED7012’s current sinks can operate in parallel for driving higher current LEDs as well. The
ZLED7012’s low dropout current sinks are capable of driving most types of LEDs with forward voltages as
high as 4.7V at full current with a VCC input supply of 2.8V to 5.5V.
The Evaluation Board contains a standard 5-pin terminal connector to allow the user to easily interface with
the microcontroller and the ZLED7012 to evaluate its functions, features, and performance. The Evaluation
Board also has two push-buttons to send commands and change the operation mode of the ZLED7012.
Figure 2.1 shows the top view of the populated kit PCB.
2.2.
Power Supply
For easy operation with a 5V supply, the on-board female USB Mini-B connector K1 can be connected via the
enclosed cable to a USB A connector of a PC or USB power supply.
To operate the kit over the whole supply voltage range of 2.8V to 5.5V, an external power supply can be
connected to the Vdd and GND pins of the K2 header.
Since the product family members ZLED7012 and ZLED7022 use the same kit PCB differing only in the
number of current channels, the red power indicator LED D11 (for the ZLED7012KIT-E1 Evaluation Kit) or
D12 (for the ZLED7022KIT-E1 Evaluation Kit) will automatically point to the valid kit type when power is
attached.
Evaluation Kit
December 8, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without
notice.
3 of 7
Toll-Free: 1-800-777-7334
E-Mail: sales@cdiweb.com
Web: www.cdiweb.com/PortalMain.aspx?pid=704
Component Distributors Inc. (CDI)
Distributing Tomorrow’s Technologies For Today’s Designs
Toll-Free: 1-800-777-7334
Since 1970
http://www.cdiweb.com/PortalMain.aspx?pid=704
ZLED7012
ZLED7012KIT-E1 Evaluation Kit
Figure 2.1
ZLED7012KIT-E1 Evaluation Board (Top View)
Connector K2
K1 USB Connector
Female Mini-B
LED 1 to 4
ZLED7012
Board Version and
Power-On Indicator
Note: LED 5
and 6 are not
applicable to
the ZLED7012.
CODE Indicator
MODE Toggle Button
SEND Button
2.3.
Interface and Setting Options
K1 – Female USB Mini-B connector for USB power supply. Data pins are not connected.
K2 – Header with the following pins:
1 – GND
2 – EN/SET
Ground. Sets the ZLED7012 to the low current shut-down mode when connected to
pin 2 for longer than 500ms.
PCC programming input of the ZLED7012.
Can be connected to an external pulse generator or to pin 3 to use the on-board
pulse generator or to pin 1 to set ZLED7012 to the low-current shut-down mode.
Pulse code sequence output of the microcomputer.
External supply voltage of 2.8V to 5.5V.
Ground.
3 – MCU
4 – Vdd
5 – GND
ICSP – Contact pads of the microcomputer programming interface.
MODE button – Toggles the PCC pulse count number.
SEND button – Programs the PCC pulse count number to the ZLED7012.
CODE indicator LEDs – Indicates preset PCC pulse count number in hex code.
Test pins – Provide access to all I/Os of the ZLED7012.
LEDs D1 to D4 – Driven by ZLED7012’s outputs D0 to D3.
(Note the difference in denotation for LED numbers between the ZLED7012 and the Evaluation Board LEDs.)
Evaluation Kit
December 8, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without
notice.
4 of 7
Toll-Free: 1-800-777-7334
E-Mail: sales@cdiweb.com
Web: www.cdiweb.com/PortalMain.aspx?pid=704
Component Distributors Inc. (CDI)
Distributing Tomorrow’s Technologies For Today’s Designs
Toll-Free: 1-800-777-7334
Since 1970
http://www.cdiweb.com/PortalMain.aspx?pid=704
ZLED7012
ZLED7012KIT-E1 Evaluation Kit
2.4.
Demo Mode
To run the demo mode, the EN/SET and MCU pins of the header K2 must be connected by a jumper (the
factory-default jumper position on delivery). After the power-on and the microcomputer initialization are
completed, the CODE LEDs indicate the number 0xF with all four yellow LEDs glowing. Starting with the
highest current level, the pulse count is continuously incremented by the microcomputer and programmed into
the ZLED7012 after a hold time of about 0.5 seconds on each brightness level. The firmware of the
microcomputer generates programming pulses of about 20μs duration.
2.5.
Manual Mode
When the jumper connects the EN/SET and MCU pins on K2, consecutively pressing the MODE button will
toggle the PCC pulse count to the corresponding hex code in the
μC.
This number is displayed by the CODE
indicator LEDs. After the desired value is reached, pressing the SEND button programs the preset pulse
sequence into the ZLED7012 and changes the current level according to Table 2.1.
Entering 0x0 causes the
μC
to hold the EN/SET signal at low potential for more than 500ms, which switches
the ZLED7012 into the shut-off mode. Entering 0xF restarts the demo mode.
With the jumper on the K2 header removed, an external PCC sequence source can be connected between
the EN/SET and GND pins. For signal levels and timing, refer to the data sheet.
Table 2.1
Current Output Settings
Hex CODE Display
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
0xB
0xC
0xD
0xE
0xF
Current Output per Channel (mA)
Causes the
μC
to hold the EN/SET input at low potential for longer than
500 ms, which will set the IC into the shut-off mode.
20.0
17.0
14.0
12.0
10.0
8.6
7.0
6.0
5.0
4.2
3.6
3.0
2.4
1.8
Not part of the code range of the ZLED7012. Will cause the
μC
to start the
demo mode.
PCC Pulse Count
-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
-
Evaluation Kit
December 8, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without
notice.
5 of 7
Toll-Free: 1-800-777-7334
E-Mail: sales@cdiweb.com
Web: www.cdiweb.com/PortalMain.aspx?pid=704
Component Distributors Inc. (CDI)
