MAX16820EVKIT+ Maxim Integrated Products, MAX16820EVKIT+ Datasheet

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MAX16820EVKIT+

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

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
The MAX16820 evaluation kit (EV kit) demonstrates a
step-down, constant-current, hysteretic controlled
switching regulator for driving high-brightness LEDs
(HB LEDs) using the MAX16820 controller IC. This EV
kit is configured to supply an average output LED cur-
rent of 1A, and operates from a 5V to 28V supply.
The EV kit eases evaluation of the MAX16820 dedicat-
ed pulse-width-modulation (PWM) dimming control and
undervoltage lockout (UVLO) features.
The MAX16820 EV kit comes with the MAX16820
installed. The MAX16820 EV kit can also be used to
evaluate the MAX16819. Contact the factory for free
samples of the pin-compatible MAX16819 to evaluate
this part.
19-0769; Rev 0; 3/07
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
DESIGNATION
JU1
C1
C2
C3
C4
D1
L1
________________________________________________________________ Maxim Integrated Products
QTY
0
1
0
1
1
1
1
General Description
Not installed, capacitor (2220)
1µF ±10%, 50V X7R ceramic
capacitor (1210)
Murata GRM32RR71H105K or
TDK C3225X7R1H105K
Not installed, capacitor (1206)
1µF ±10%, 16V X7R ceramic
capacitor (0603)
Murata GRM188R71C105K or
TDK C1608X7R1C105K
30V , 1A S chottky d i od e ( S OD - 123)
Fairchild Semiconductor FBR130
2-pin header
56µH, 940mA inductor (7.3mm x
8.1mm)
Sumida CR75NP-560KC
DESCRIPTION
MAX16820 Evaluation Kit
o Operates from a 5V to 28V, 1.5A Supply
o Constant LED Current Control
o 1A Average LED Current
o PWM Dimming Control Up to 20kHz
o Fully Assembled and Tested
+ Denotes a lead-free and RoHS-compliant EV kit.
* This limited temperature range applies to the EV kit PCB only.
The MAX16820 IC temperature range is -40°C to +125°C.
** EP = Exposed paddle.
MAX16820EVKIT+
DESIGNATION
PART
N1
R1
R2
U1
QTY
1
1
1
1
1
1
Ordering Information
TEMP RANGE
0°C to +70°C*
30V, 2.7A n-channel MOSFET
(SOT23)
Fairchild Semiconductor
FDN359BN
0.2Ω ±1%, 0.5W sense resistor
(1206)
IRC LRC-LR1206LF-01-R200-F
100kΩ ±5% resistor (0603)
MAX16820ATT+ (6-pin TDFN-EP,
3mm x 3mm x 0.8mm)
Shunt (JU1)
PCB: MAX16820 Evaluation Kit+
Component List
DESCRIPTION
Features
IC PACKAGE
6 TDFN-EP**
1

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MAX16820EVKIT+ Summary of contents

Page 1

... PWM Dimming Control Up to 20kHz o Fully Assembled and Tested Ordering Information PART TEMP RANGE MAX16820EVKIT+ 0°C to +70°C* + Denotes a lead-free and RoHS-compliant EV kit. * This limited temperature range applies to the EV kit PCB only. The MAX16820 IC temperature range is -40°C to +125° Exposed paddle. ...

Page 2

MAX16820 Evaluation Kit SUPPLIER Fairchild Semiconductor IRC Murata Mfg. Co., Ltd. Sumida Corp. TDK Corp. Note: Indicate that you are using the MAX16820 when contacting these component suppliers. Recommended Equipment • 24V, 1.5A DC power supply • Voltmeter • LED ...

Page 3

Hysteretic Mode To enter hysteretic mode, the following input require- ments must be met: set VIN above 5V or above V 4V (whichever is greater), and provide 1.1A of input cur- rent to the EV kit. If low-voltage or low-current ...

Page 4

MAX16820 Evaluation Kit VIN VIN C1 C2 OPEN 1μF GND DIM GND Figure 1. MAX16820 EV Kit Schematic Diagram Figure 2. MAX16820 EV Kit Component Placement Guide— Component Side 4 _______________________________________________________________________________________ R1 0.2Ω CSN ...

Page 5

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 5 © 2007 Maxim Integrated Products MAX16820 Evaluation Kit is a registered trademark of Maxim Integrated Products, Inc ...

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