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MAX16822BEVKIT Scheda tecnica(PDF) 1 Page - Maxim Integrated Products

Il numero della parte MAX16822BEVKIT
Spiegazioni elettronici  MAX16822B Evaluation Kit
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Produttore elettronici  MAXIM [Maxim Integrated Products]
Homepage  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX16822BEVKIT Scheda tecnica(HTML) 1 Page - Maxim Integrated Products

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General Description
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.
Features
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
Circuit
o Evaluates MAX16822A (IC Replacement Required)
o Fully Assembled and Tested
MAX16822B Evaluation Kit
________________________________________________________________
Maxim Integrated Products
1
19-4211; Rev 0; 7/08
Component List
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.
Ordering Information
DESIGNATION
QTY
DESCRIPTION
C1
1
1µF ±10%, 100V X7R ceramic
capacitor (1210)
Murata GRM32CR72A105K
C2
1
0.01µF ±10%, 50V X7R ceramic
capacitor (0603)
Murata GRM188R71H103K
C3
0
Not installed, ceramic capacitor (1210)
D1
1
100V, 1A Schottky rectifier diode
(SMB)
Central Semiconductor CMSH1-100
(Top Mark: CS100)
JU1, JU2
2
2-pin headers
L1
1
220µH, 0.720A inductor
Coilcraft MSS1038-224KL
DESIGNATION
QTY
DESCRIPTION
R1
1
0.600
Ω ±1%, 0.5W sense resistor
(1206)
IRC LRC-LRF1206LF-01-R600-F
R2
1
100k
Ω ±10% potentiometer
R3
1
20k
Ω ±5% resistor (0805)
R4
1
100k
Ω ±5% resistor (0805)
TP1
1
PC mini red test point
TP2
1
PC mini black test point
U1
1
Step-down HBLED driver (8 SO)
Maxim MAX16822BASA+
2
Shunts (JU1, JU2)
1
PCB: MAX16822B Evaluation Kit+
PART
TYPE
MAX16822BEVKIT+
EV Kit
+
Denotes lead-free and RoHS compliant.


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