MAX16814EVKIT+ Maxim Integrated Products, MAX16814EVKIT+ Datasheet - Page 4

• Manufacturer Part Number: MAX16814EVKIT+
• Description: KIT EAL FOR MAX16814
• Manufacturer: Maxim Integrated Products

Specifications of MAX16814EVKIT+

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

MAX16814 Evaluation Kit
using the SYNC PCB pad and an external AC clock
signal. Test points are provided for easy access to IC’s
VCC and SGND.
The EV kit features two jumpers to enable/disable U1
and configure the UVLO. Jumper JU1 enables the EV kit
when a shunt is installed and a shunt is also installed on
pins 1-2 of jumper JU2. Removing jumper JU1 disables
the EV kit. Configuring jumper JU2 to pins 2-3 allows
an external controller to enable the circuit and also dis-
ables UVLO resistors R1 and R2. Connect the external
controller to the ENABLE and SGND PCB pads. Refer to
the Enable section in the MAX16814 IC data sheet for
additional information. See Table 1 for jumper JU1 and
JU2 settings.
The EV kit features a jumper to reconfigure the IC current
sinks on all 4 channels. When inserted, jumper JU3 con-
figures the current-sink limits to 150mA, and removing
the jumper configures the current-sink limits to 100mA.
See Table 2 for jumper JU3 settings.
Table_1._Enable_and_UVLO_(JU1,_JU2)
Table_2._HB_LED_Current_(JU3)
4_ _ _______________________________________________________________________________________
SHUNT_POSITION
Installed
installed
installed
Not installed
JU1
Not
Not
POSITION
Installed
SHUNT_
JU2
1-2
1-2
2-3
Connected to R15
Connected to R15
UVLO R1 and
UVLO R1 and
Connected to
Connected to
Connected to
ENABLE PCB
R2 divider
R2 divider
SETI_PIN
and R16
EN_PIN
pad
Enable and UVLO
HB LED Current
External controller
enabled (no on-
Enabled (UVLO
CURRENT-SINK_
OPERATION
board UVLO)
LIMITS_(mA)
operating)
Disabled
EV_KIT_
HB_LED_
100
150
To reconfigure the circuit for another current-sink
threshold, replace resistor R15 and use the following
equation to calculate a new value for the desired current:
where I
R15 is the new resistor value for obtaining the desired
HB LED current. Remove jumper JU3 when configuring
for another current-sink level.
The EV kit features jumpers to disable each channel’s
OUT_ current sink. When disabling a channel, install
a jumper in the channel’s respective OUT_ jumper.
Remove the shunt to use a channel’s OUT_ sink capabil-
ity. See Table 3 for jumper JU4–JU7 settings.
Table_3._Disabling_Channel_1–Channel_4_
(JU4–JU7)
*The series-connected HB LED string must be rated no less
than 150mA.
Channel 1–Channel 4 Current-Sink Disabling
OUT_
OUT1
OUT2
OUT3
OUT4
LED
JUMPER
JU4
JU5
JU6
JU7
is the desired HB LED current in amps and
POSITION
installed
Installed
installed
Installed
installed
Installed
installed
Installed
SHUNT_
R15
Not
Not
Not
Not
=
1500
I
LED
Channel 1 operational,
connect an HB LED
string* to VOUT and
OUT1
Channel 1 OUT1 not
used
Channel 2 operational,
connect an HB LED
string* to VOUT and
OUT2
Channel 2 OUT2 not
used
Channel 3 operational,
connect an HB LED
string* to VOUT and
OUT3
Channel 3 OUT3 not
used
Channel 4 operational,
connect an HB LED
string* to VOUT and
OUT4
Channel 4 OUT4 not
used
CHANNEL_OPERATION