Maxim Integrated MAX16814 Evaluation Kit MAX16814EVKIT+ MAX16814EVKIT+ Data Sheet
Product codes
MAX16814EVKIT+
MAX16814 Evaluation Kit
Evaluates:
MAX
16814
4_ _ _______________________________________________________________________________________
using the SYNC PCB pad and an external AC clock
signal. Test points are provided for easy access to IC’s
VCC and SGND.
signal. Test points are provided for easy access to IC’s
VCC and SGND.
Enable and UVLO
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.
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.
HB LED Current
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.
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.
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:
threshold, replace resistor R15 and use the following
equation to calculate a new value for the desired current:
LED
1500
R15
I
=
where I
LED
is the desired HB LED current in amps and
R15 is the new resistor value for obtaining the desired
HB LED current. Remove jumper JU3 when configuring
for another current-sink level.
HB LED current. Remove jumper JU3 when configuring
for another current-sink level.
Channel 1–Channel 4 Current-Sink Disabling
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.
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_1._Enable_and_UVLO_(JU1,_JU2)
Table_2._HB_LED_Current_(JU3)
Table_3._Disabling_Channel_1–Channel_4_
(JU4–JU7)
(JU4–JU7)
*The series-connected HB LED string must be rated no less
than 150mA.
SHUNT_POSITION
EN_PIN
EV_KIT_
OPERATION
JU1
JU2
Installed
1-2
Connected to
UVLO R1 and
R2 divider
Enabled (UVLO
operating)
Not
installed
1-2
Connected to
UVLO R1 and
R2 divider
Disabled
Not
installed
2-3
Connected to
ENABLE PCB
ENABLE PCB
pad
External controller
enabled (no on-
board UVLO)
OUT_
JUMPER
SHUNT_
POSITION
CHANNEL_OPERATION
OUT1
JU4
Not
installed
Channel 1 operational,
connect an HB LED
string* to VOUT and
OUT1
connect an HB LED
string* to VOUT and
OUT1
Installed
Channel 1 OUT1 not
used
used
OUT2
JU5
Not
installed
Channel 2 operational,
connect an HB LED
string* to VOUT and
OUT2
connect an HB LED
string* to VOUT and
OUT2
Installed
Channel 2 OUT2 not
used
used
OUT3
JU6
Not
installed
Channel 3 operational,
connect an HB LED
string* to VOUT and
OUT3
connect an HB LED
string* to VOUT and
OUT3
Installed
Channel 3 OUT3 not
used
used
OUT4
JU7
Not
installed
Channel 4 operational,
connect an HB LED
string* to VOUT and
OUT4
connect an HB LED
string* to VOUT and
OUT4
Installed
Channel 4 OUT4 not
used
used
SHUNT_
POSITION
SETI_PIN
HB_LED_
CURRENT-SINK_
LIMITS_(mA)
Not installed
Connected to R15
100
Installed
Connected to R15
and R16
150