MAX16822BEVKIT+ Maxim Integrated Products, MAX16822BEVKIT+ Datasheet

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MAX16822BEVKIT+

Manufacturer Part Number
MAX16822BEVKIT+
Description
KIT EVAL FOR MAX16822
Manufacturer
Maxim Integrated Products
Datasheets

Specifications of MAX16822BEVKIT+

Current - Output / Channel
350mA
Outputs And Type
1, Non-Isolated
Voltage - Output
64V
Features
Dimmable
Voltage - Input
6 ~ 65V
Utilized Ic / Part
MAX16822
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX16822B evaluation kit (EV kit) demonstrates
the MAX16822B hysteretic current-mode high-bright-
ness LED (HBLED) driver IC. The MAX16822B EV kit is
configured as a step-down topology with a constant-
current HBLED driver circuit for external HBLEDs. The
MAX16822B EV kit operates from a DC supply voltage
of 6V to 65V and is configured to deliver up to 350mA
of current to user-supplied HBLEDs. The output voltage
for the HBLED string can go up to 64V and depends
upon the EV kit’s input voltage.
The MAX16822B EV kit can be configured for digital
pulse-width modulation (PWM) dimming operation
using a digital PWM input signal to control the HBLEDs’
brightness. The MAX16822B has an undervoltage lock-
out (UVLO) feature that disables the EV kit at low input
voltage. The EV kit circuit also features a thermal fold-
back and temperature simulation circuit feature. The
MAX16822B EV kit is a fully assembled and tested sur-
face-mount board. The MAX16822B EV kit can also
evaluate the MAX16822A, or for higher currents, a
MAX16832 IC.
Warning: Voltages exceeding 42V may exist on the
LED+ and LED- output pads.
19-4211; Rev 0; 7/08
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
DESIGNATION
JU1, JU2
C1
C2
C3
D1
L1
QTY
________________________________________________________________ Maxim Integrated Products
1
1
0
1
2
1
1µF ±10%, 100V X7R ceramic
capacitor (1210)
Murata GRM32CR72A105K
0.01µF ±10%, 50V X7R ceramic
capacitor (0603)
Murata GRM188R71H103K
N ot i nstal l ed , cer am i c cap aci tor ( 1210)
100V, 1A Schottky rectifier diode
(SMB)
Central Semiconductor CMSH1-100
(Top Mark: CS100)
2-pin headers
220µH, 0.720A inductor
Coilcraft MSS1038-224KL
General Description
DESCRIPTION
MAX16822B Evaluation Kit
o 6V to 65V Wide Supply Voltage Range
o 333mA LED Current
o Digital PWM Dimming Control
o Analog Dimming Control
o Thermal Foldback and Temperature Simulation
o Evaluates MAX16822A (IC Replacement Required)
o Fully Assembled and Tested
+ Denotes lead-free and RoHS compliant.
DESIGNATION
Circuit
MAX16822BEVKIT+
TP1
TP2
U1
R1
R2
R3
R4
PART
QTY
1
1
1
1
1
1
1
2
1
Ordering Information
0.600Ω ±1%, 0.5W sense resistor
(1206)
IRC LRC-LRF1206LF-01-R600-F
100kΩ ±10% potentiometer
20kΩ ±5% resistor (0805)
100kΩ ±5% resistor (0805)
PC mini red test point
PC mini black test point
Step-down HBLED driver (8 SO)
Maxim MAX16822BASA+
Shunts (JU1, JU2)
PCB: MAX16822B Evaluation Kit+
Component List
DESCRIPTION
TYPE
EV Kit
Features
1

Related parts for MAX16822BEVKIT+

MAX16822BEVKIT+ Summary of contents

Page 1

... Digital PWM Dimming Control o Analog Dimming Control o Thermal Foldback and Temperature Simulation Circuit o Evaluates MAX16822A (IC Replacement Required) o Fully Assembled and Tested Ordering Information PART MAX16822BEVKIT+ + Denotes lead-free and RoHS compliant. DESIGNATION QTY 0.600Ω ±1%, 0.5W sense resistor R1 1 (1206) IRC LRC-LRF1206LF-01-R600-F ...

Page 2

MAX16822B Evaluation Kit SUPPLIER Central Semiconductor Corp. Coilcraft, Inc. IRC, Inc. Murata Electronics North America, Inc. Note: Indicate that you are using the MAX16822B when contacting these component suppliers. Required Equipment Before beginning, the following equipment is needed: • MAX16822B ...

Page 3

Enable and HBLED Dimming Control The MAX16822B EV kit features a jumper to enable and disable the MAX16822B IC (U1). Installing jumper JU1 disables the MAX16822B IC. Additionally, HBLED dim- ming is achieved on the MAX16822B EV kit by applying ...

Page 4

MAX16822B Evaluation Kit Figure 1. MAX16822B EV Kit Schematic 4 _______________________________________________________________________________________ ...

Page 5

Figure 2. MAX16822B EV Kit Component Placement Guide— Components Side _______________________________________________________________________________________ MAX16822B Evaluation Kit Figure 3. MAX16822B EV Kit PCB Layout—Component Side 5 ...

Page 6

... 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. 6 ___________________ Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products ...

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