MAX8678EVKIT+ Maxim Integrated Products, MAX8678EVKIT+ Datasheet - Page 2

• Manufacturer Part Number: MAX8678EVKIT+
• Description: KIT EVAL FOR MAX8678
• Manufacturer: Maxim Integrated Products

Specifications of MAX8678EVKIT+

• Current - Output / Channel: 24mA
• Outputs And Type: 4, Non-Isolated
• Features: Dimmable, with Mono 1.1W Class AB Audio Amplifier
• Voltage - Input: 2.7 ~ 5.5V
• Utilized Ic / Part: MAX8678
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MAX8678 Evaluation Kit
Before beginning, the following equipment is needed:
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The MAX8678 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1) Preset the power supply to between 2.7V and 5.5V.
2) Turn off the power supply. Do not turn on the power
Table 1. Jumper Positions
Note: Indicate that you are using the MAX8678 when
contacting these component suppliers.
2
Kamaya, Inc.
M ur ata E l ectr oni cs
N or th Am er i ca, Inc.
Nichia Corp.
Panasonic Corp.
TDK Corp.
Vishay
JUMPER
JU1
JU2
JU3
JU4
JU5
JU6
JU7
2.7V to 5.5V power supply or battery able to deliver
1.5A
Audio source (e.g., CD player, MP3 player, etc.)
4Ω/8Ω speaker
supply until all connections are completed.
_______________________________________________________________________________________
SUPPLIER
The pulse generator is not powered
IN+ input filter capacitor is used
IN- input filter capacitor is used
An external pulse generator
An external pulse generator
controls the amplifier gain
controls the dimming
260- 489- 1533 www.kamaya.com
814- 237- 1431 www.murata-northamer ica.com
248- 352- 6575 www.nichia.com
800- 405- 0652 www.panasonic.com
847- 803- 6100 www.component.tdk.com
402- 563- 6866 www.vishay.com
PH O N E
Component Suppliers
Recommended Equipment
OPEN
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Quick Start
WEBSITE
Procedure
The p ul se g ener ator i s p ow er ed fr om IN 1
JU6 connects the input supply to the LEDs
IN+ input filter capacitor is not used
IN- input filter capacitor is not used
The on-board pulse generator
The on-board pulse generator
Differential audio input
controls the dimming
controls the gain
POSITIONS
1-2
3) Turn off the audio source.
4) Verify that shunts on JU2–JU5 are installed (if the
5) Connect the speaker across OUT+ and OUT- out-
6) Connect the audio source to IN+/IN- for differential
7) Set JU1 to select a differential or single-ended input
8) Set JU7 to IN1.
9) Connect the power-supply positive terminal to the
10) Connect the power-supply negative terminal to the
11) Turn on the power supply and the audio source.
12) Press switch S2 once.
13) Verify that the white LEDs are dimly lit.
14) Repeatedly press switch S2 to increase the LED
15) Press switch S1 to run the LED demo.
16) Press switch S4 to turn on the audio amp to the min-
17) Repeatedly press switch S4 to increase the volume
audio source does not have a bias voltage compati-
ble with the MAX8678, remove the shunts from JU2
and JU3 to use the input filter capacitors). See
Table 1 for jumper positions.
put pads on MAX8678 EV kit.
audio source and to IN+ for single-ended audio
input source.
(JU2 and JU3 must be removed when using a sin-
gle-ended input).
IN1 pad.
GND1 pad.
brightness.
imum volume.
in 3dB steps.
The p ul se g ener ator i s p ow er ed fr om IN 2
Single-ended audio input
2-3
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