MAX1583EVKIT Maxim Integrated, MAX1583EVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX1583EVKIT
• Description: LED Lighting Development Tools Evaluation Kit for the MAX1583
• Manufacturer: Maxim Integrated
• Series: MAX1582r

Specifications of MAX1583EVKIT

• Product: Evaluation Kits

• 0 to +6V at 1A, variable-output power supply
• Two digital multimeters (DMMs)
The MAX1583 EV kit is fully assembled and tested.
Perform the following steps to verify board operation:
1) Verify that shunts are installed on pins 2-3 of
2) Verify that JU3 is open.
3) Preset the power supply to 2.7V and turn off. Do
4) Connect the positive lead of the power supply to the
5) Connect the positive lead of one DMM to the OUT
6) Connect the positive lead of the other DMM to POK
7) Turn on the power supply.
8) Verify that the white LEDs are off.
9) Remove the shunt on jumper JU2 and place it
10) Verify that the white LEDs light up. V
MAX1583 Evaluation Kit
2
DESIGNATION QTY
jumpers JU1 (EN2) and JU2 (EN1). This places the
device into shutdown mode.
not turn on the power supply until all connec-
tions are completed.
VIN pad on the EV kit PCB. Connect the ground
lead of the power supply to the GND pad on the EV
kit PCB.
pad on the EV kit PCB and connect the negative
lead of the DMM to the GND pad. This DMM mea-
sures the voltage at OUT (V
on the EV kit PCB and connect the negative lead of
the DMM to the GND pad. This DMM measures the
voltage at POK (V
between pins 1-2 of JU2. This places the device
into movie mode.
read approximately 7V.
_______________________________________________________________________________________
U1
U2
—
—
Component List (continued)
1
1
2
1
POK
Recommended Equipment
White LED boost converter
(10 TDFN)
Maxim MAX1583XETB
Low-power microprocessor reset
circuit (SOT23)
Maxim MAX6422XC23
Shunts
PCB: MAX1583 EVALUATION KIT
).
OUT
DESCRIPTION
).
Quick Start
Procedure
OUT
should
11) Sweep the input voltage from 2.7V to 5.5V, verifying
12) Set the power supply to 2.7V.
13) Remove the shunt on JU2 and place it between
14) Verify that the white LEDs are off. Verify that V
15) Sweep the power supply to 5.5V. Verify that the
16) Set the power supply to 3.3V.
17) Push the button on the bottom of the EV kit. This
18) Verify that the LEDs flash.
EN1 and EN2 on the MAX1583 provide control for shut-
down mode, movie mode, precharge mode, and strobe
mode. Jumpers JU1 and JU2 connect EN2 and EN1 to
either VIN or GND (see
be used to drive EN1 or EN2 by removing the corre-
sponding shunt completely from the jumper and con-
necting the external signal to the appropriate connect-
ing pad. JU3 enables the pulse generator for the strobe
mode. JU3 must be open if a jumper is installed on
JU2 or if EN1 is externally driven.
The preset LED current in movie mode is 20mA. To set
a different movie-mode LED current, change R2, where
R2 = 60/I
mode currents up to 100mA.
The preset LED current in strobe mode is 100mA. To
set a different strobe-mode LED current, change R1,
where R1 = 600/I
strobe-mode LED currents up to 300mA; however, the
LED installed on the EV kit has a maximum pulse-cur-
rent rating of 100mA. If larger currents are desired, a
new LED with a higher pulsed current rating must be
installed on the EV kit.
The EV kit allows for easy evaluation of off-board LEDs.
To evaluate off-board LEDs, first remove installed LEDs,
D2. Next, connect the pad labeled OUT on the EV kit to
Detailed Description of Hardware
that the LEDs remain on with constant brightness
and V
pins 1-2 of JU3. Remove the shunt on JU1 and
place it between pins 1-2 of JU1. This places the
device into precharge mode.
approximately 23.5V and V
2.7V.
LEDs remain off, V
V
enables a strobe/flash.
POK
OUT
tracks V
LED(MOVIE)
does not change.
LED(STROBE)
VIN
. The device is capable of movie-
.
Evaluating Off-Board LEDs
OUT
Table
is approximately 23.5V, and
Setting LED Current
. The device can regulate
1). An external signal can
Jumper Selection
POK
is approximately
OUT
is