MAX8630XEVKIT+ Maxim Integrated Products, MAX8630XEVKIT+ Datasheet - Page 2

• Manufacturer Part Number: MAX8630XEVKIT+
• Description: KIT EVAL FOR MAX8630X MAX8630W
• Manufacturer: Maxim Integrated Products

Specifications of MAX8630XEVKIT+

• Current - Output / Channel: 25mA
• Outputs And Type: 5, Non-Isolated
• Features: Dimmable
• Voltage - Input: 2.7 ~ 5.5V
• Utilized Ic / Part: MAX8630
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MAX8630X Evaluation Kit
Before beginning, the follow equipment is needed:
• 2.7V to 5.5V power supply capable of delivering
Follow the steps below to verify board operation:
1) Place shunts across pins 1-2 of JU1 and JU2 to
2) Set the power-supply voltage between 2.7V to 5.5V.
3) Connect the positive power-supply lead to the EV
4) Turn on the power supply. When turned on, the
5) To dim the main LEDs in 1/32nd steps, press S1
6) To dim the sub LEDs in 1/32nd steps, press S2
Table 1. Jumper Settings
2
500mA
_______________________________________________________________________________________
enable the main and sub LEDs.
Turn the power supply off. Do not turn on the power
supply until all connections are completed.
kit pad labeled IN. Connect the power-supply
ground to the EV kit pad labeled GND.
LEDs are at full brightness.
repeatedly. The main LEDs return to full brightness
after 32 button presses.
repeatedly. The sub LEDs return to full brightness
after 32 button presses.
JUMPER
JU1
JU2
JU3
JU4
JU5
POSITION
SHUNT
Recommended Equipment
Short
Short
Short
Open
Open
Open
1-2
2-3
1-2
2-3
ENM is pulled up to IN with a 10kΩ resistor, enabling the main LED group. The pulse
generator for the main LED group is powered.
ENM is pulled down to GND, disabling the main LED group. The pulse generator for the main
LED group is not powered.
ENS is pulled up to IN with a 10kΩ resistor, enabling the sub LED group. The pulse generator
for the sub LED group is powered.
ENS is pulled down to GND, disabling the sub LED group. The pulse generator for the sub
LED group is not powered.
Connects the on-board LEDs to the MAX8630 output.
Disconnects the on-board LEDs from the MAX8630 output.
Connects ENM to the on-board main pulse generator.
Disconnects ENM from the on-board main pulse generator.
Connects ENS to the on-board sub pulse generator.
Disconnects ENS from the on-board sub pulse generator.
Quick Start
Procedure
On-board pulse generators are provided to evaluate
the serial-pulse dimming feature of the MAX8630X. To
enable or disable the main or sub group of LEDs and
the corresponding pulse generator, use JU1 and JU2
(see Table 1). When first enabled, the LEDs are at full
brightness. To dim the main LEDs, press S1 repeated-
ly; for the sub LEDs, press S2 repeatedly. Dimming is
done in 32 linear steps. On the 32nd button press, the
LEDs return to full brightness.
To use external pulse generators, cut the traces short-
ing JU4 and JU5 to disconnect the on-board pulse
generators. Connect the external pulse generator to the
pads labeled ENM (main) and ENS/PWM (sub).
To disable any of the LEDs, connect the square pad next
to that particular LED to the square pad labeled OUT.
The MAX8630XETD25 (25mA serial-pulse dimming ver-
sion) comes installed on the MAX8630X EV kit. To eval-
uate other versions of the MAX8630X, simply replace
the IC with a part having the desired factory-pro-
grammed, full-scale output current.
To evaluate the MAX8630W_ with direct PWM dimming
control, replace U1 with the MAX8630W_, cut the
traces shorting JU4 and JU5, and install capacitor C9
(typically 0.1µF). Apply the PWM dimming signal to the
EV kit pad labeled ENS/PWM.
Detailed Description of Hardware
FUNCTION
Evaluating Other Versions of
Using Fewer than 5 LEDs
Serial-Pulse Dimming
the MAX8630