MAX16820EVKIT+ Maxim Integrated Products, MAX16820EVKIT+ Datasheet - Page 2

• Manufacturer Part Number: MAX16820EVKIT+
• Description: EVAL KIT FOR MAX16820
• Manufacturer: Maxim Integrated Products

Specifications of MAX16820EVKIT+

• Current - Output / Channel: 1A
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 20V
• Features: Dimmable
• Voltage - Input: 5 ~ 28V
• Utilized Ic / Part: MAX16820
• Core Chip: MAX16820
• No. Of Outputs: 1
• Output Current: 1A
• Dimming Control Type: PWM
• Development Tool Type: Hardware - Eval/Demo Board
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Leaded Process Compatible: Yes
• Mcu Supported Families: MAX16820
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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The MAX16820 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1) Verify that a shunt is installed on JU1 (MAX16820
2) Set the DC power-supply output to 24V.
3) Disable the power-supply output.
4) Connect the power-supply ground to the GND pad
5) Connect the power-supply output to the VIN pad on
6) Connect the LED load’s anode to the LED+ output
7) Enable the power supply.
8) Remove the shunt on JU1 (MAX16820 enabled).
9) Measure the voltage across the LED+ and LED-
MAX16820 Evaluation Kit
Note: Indicate that you are using the MAX16820 when contacting these component suppliers.
2
Fairchild Semiconductor
IRC
Murata Mfg. Co., Ltd.
Sumida Corp.
TDK Corp.
24V, 1.5A DC power supply
Voltmeter
LED load rated for at least 1A and a total LED for-
ward voltage drop V
disabled).
on the EV kit.
the EV kit.
pad and the cathode to the LED- output pad.
pads and verify that the voltmeter reads approxi-
mately V
_______________________________________________________________________________________
FLED
SUPPLIER
.
Recommended Equipment
FLED
≤ 20V
Quick Start
Procedure
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PHONE
The MAX16820 EV kit features the MAX16820 controller
and demonstrates a step-down, constant-current, hys-
teretic controlled regulator for driving HB LEDs. The
MAX16820 EV kit output is current-controlled by moni-
toring the voltage across external high-side sense
resistor R1 in series with the LED output. In hysteretic
mode, the MAX16820 EV kit is configured to output an
LED current of 1A ±6% (I
ing and falling UVLO threshold points are 5V (max) and
4.5V (min), respectively. The EV kit can operate from a
5V to 28V supply capable of 1.5A.
Typically, capacitor C1 is not required if the power sup-
ply is relatively close to the EV kit. If long wires are used
to connect the power supply to the EV kit, install up to
10µF of bulk capacitance at the surface-mount 2220
pads provided for C1.
EV kit jumper JU1 enables the MAX16820. See Table 1
for JU1 configuration.
Table 1. MAX16820 Enable (Jumper JU1)
Not installed
POSITION
Installed
SHUNT
Connected to GND MAX16820 disabled
Pulled to VCC
through resistor R2
www.fairchildsemi.com
www.irctt.com
www.murata.com
www.sumida.com
www.component.tdk.com
Component Suppliers
DIM PIN
Detailed Description
LED
). The MAX16820 VIN ris-
WEBSITE
Jumper Selection
MAX16820 enabled
(DIM pin can be used
for PWM dimming)
EV KIT FUNCTION
Enable