MAX8751EVKIT Maxim Integrated Products, MAX8751EVKIT Datasheet - Page 3

• Manufacturer Part Number: MAX8751EVKIT
• Description: Display Modules & Development Tools MAX8751 KIT MAX8751 KIT
• Manufacturer: Maxim Integrated Products

Specifications of MAX8751EVKIT

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1) Connect the lamps to connectors CN1–CN4.
2) Connect the +8V to +24V supply to the pads
3) Turn on the power supply.
The brightness of the lamp is adjustable using poten-
tiometer R10.
Jumper JU1 connects the brightness control select
input (the SEL pin) to either VCC or GND. Connecting
SEL to VCC (JU1 = 1-2) enables brightness control
using an external sync signal. Connecting SEL to GND
(JU1 = 2-3) enables analog control where the bright-
ness is adjusted with an analog voltage on the CNTL
pin. See Table 2 for jumper settings.
Table 1. Phase Shift
*Default position.
Table 2. Jumper Selection
*Default position.
2-3 (GND)*
JU4 (PS1)
2-3 (GND)
1-2 (VCC)
1-2 (VCC)
labeled VIN and GND on the MAX8751 EV kit.
JUMPER
PIN SETTINGS
JU1
JU2
JU3
JU4
JU5
JU6
JU7
Brightness Control Select Input
2-3 (GND)*
JU5 (PS2)
2-3 (GND)
1-2 (VCC)
1-2 (VCC)
_______________________________________________________________________________________
Not installed*
Not installed
Not installed
Not installed
LOCATION
Detailed Description
Installed*
Installed*
Installed
SHUNT
2-3*
1-2*
1-2
2-3
—
—
MASTER
0
0
0
0
An external sync signal controls the brightness.
An analog voltage on the CNTL pin controls the brightness.
Configures the MAX8751 for master operation.
Configures the MAX8751 for slave operation.
Enables the MAX8751.
Disables the MAX8751.
Drive pad SHDN with an external logic signal.
Phase-shift select input 1 (PS1). See the phase shift table (Table 1).
Phase-shift select input 2 (PS2). See the phase shift table (Table 1).
The switching frequency synchronizes to an external signal applied to HSYNC.
Disables the HSYNC feature.
The DPWM frequency synchronizes to an external signal applied to LSYNC.
Disables the LSYNC feature.
Brightness
Procedure
SLAVE 1
180
120
90
72
MAX8751 Evaluation Kit
PHASE SHIFT IN DEGREES
Place a shunt on JU2 to enable slave mode operation
when using a daisy-chain configuration. See the Daisy-
Chain Configuration section for more details. See Table
2 for jumper settings.
A shunt installed on JU3 2-3 places the MAX8751 in
shutdown mode. See Table 2 for jumper settings.
Jumpers JU4 and JU5 set the phase shift for daisy
chaining up to five MAX8751s. See Table 1 for the
phase shift settings.
Main switching frequency sync input. The switching fre-
quency synchronizes to an external signal applied to
HSYNC. Refer to the MAX8751 IC data sheet for more
information. Place a shunt on JU6 to disable the
HSYNC feature. See Table 2 for jumper settings.
SLAVE 2
240
180
144
—
FUNCTION
Phase Shift (PS1 and PS2)
SLAVE 3
Slave Mode Operation
270
216
—
—
Shutdown
SLAVE 4
288
—
—
—
HSYNC
3