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Maxim MAX16839 Quick Start Manual

Evaluation kit
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19-4942; Rev 1; 5/10

General Description

The MAX16839 evaluation kit (EV kit) demonstrates
three separate high-voltage, single-channel, linear high-
brightness LED (HB LED) drivers using the MAX16839
IC. This EV kit is configured to supply an HB LED current
of 100mA per channel and operates from a 5V to 40V
rated power supply providing up to 300mA. The EV kit
can withstand a 45V automotive load-dump condition.
An input switch is included to evaluate pulse-width-
modulation (PWM) driving with supply chopping.
The EV kit eases evaluation of the MAX16839 PWM
dimming-control feature by providing three indepen-
dent PWM inputs to all three channels. Each PWM input
accepts a digital signal up to 10kHz. Additionally, mul-
tiple EV kits can be cascaded by using the MAX16839
FLTS signals. An input common-mode choke is also
provided to facilitate EMI immunity testing.
DESIGNATION
QTY
1FF Q10%, 50V X7R ceramic
C1
1
capacitor (0805)
Murata GRM21BR71H105K
0.022FF Q10%, 50V X7R ceramic
C2, C3, C4
3
capacitors (0805)
Murata GRM216R71H223K
0.1FF Q10%, 50V X7R ceramic
C5, C6, C7
3
capacitors (0805)
Murata GCM21BR71H104K
60V, 1A Schottky diode (SMA)
Central Semi CMSH1-60M LEAD
D1
1
FREE
(Top Mark: CS60M)
15V Q 5%, 250mW zener diode
(SOD523)
D2
1
Central Semi CMOZ15V LEAD
FREE
(Top Mark: H0)
JU1, JU2, JU3
3
3-pin headers
JU4–JU11
8
2-pin headers
80V, 500mA common-mode choke
L1
1
TDK ZJYS81R5-2P24-G01
_______________________________________________________________ Maxim Integrated Products 1
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.
MAX16839 Evaluation Kit
DESCRIPTION
Three Independent Channels for Driving
S
High-Brightness LEDs
100mA LED Current per Channel
S
Three Independent PWM Inputs
S
PWM Dimming Control Up to 10kHz
S
Operates from a 5V to 40V Supply
S
Supply Input Chopper Circuit
S
Capability for Cascading Multiple Kits
S
Proven PCB and Thermal Design
S
Fully Assembled and Tested
S

Ordering Information

PART
MAX16839EVKIT+
+Denotes lead(Pb)-free and RoHS compliant.
DESIGNATION
QTY
60V 1.25A p-channel MOSFET
(SOT23)
P1
1
Fairchild FDN5618P
(Top Mark: 618)
65V 100mA npn transistor
(SOT23)
Central Semi BC846A TR
Q1
1
(Top Mark: 1A) or
Fairchild BC846AMTF
(Top Mark: 8AA)
R1, R3, R5
3
4.12I Q1% resistors (0603)
R2, R4, R6
3
2.05I Q1% resistors (0603)
R7, R9, R10
3
10kI Q5% resistors (1206)
R8
1
2.2kI Q5% resistor (2010)
Programmable LED current
regulators (6 TDFN-EP*)
U1, U2, U3
3
Maxim MAX16839ATT+
(Pkg. Code: T633+2)
—
11
Shunts (JU1–JU11)
PCB: MAX16839 EVALUATION
—
1
KIT+
*EP = Exposed pad.
Features
TYPE
EV Kit
Component List
DESCRIPTION

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Summary of Contents for Maxim MAX16839

  • Page 1: General Description

    PCB: MAX16839 EVALUATION JU4–JU11 2-pin headers — KIT+ 80V, 500mA common-mode choke *EP = Exposed pad. TDK ZJYS81R5-2P24-G01 _______________________________________________________________ Maxim Integrated Products 1 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.

  • Page 2: Quick Start

    Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX16839 when contacting these component suppliers. Quick Start 8) Enable the power-supply output. 9) Verify that the attached LEDs are illuminated. Required Equipment •...

  • Page 3: Operation

    Refer to the Open-LED Detection and Fault Event Status sink’s limit to 50mA. See Table 1 for channel 1, Table 2 Memory section in the MAX16839 IC data sheet for fur- for channel 2, and Table 3 for channel 3 jumper settings.
  • Page 4 The EV kit features PCB pads and jumpers for cascading See Table 5 for configuring the DIM_ jumpers. Refer to multiple kits. To cascade another EV kit, use the follow- the PWM Dimming section in the MAX16839 IC data ing guidelines: sheet for further information on the DIM signal.
  • Page 5 MAX16839 Evaluation Kit Figure 1. MAX16839 EV Kit Schematic _______________________________________________________________________________________...
  • Page 6 MAX16839 Evaluation Kit 1.0” 1.0” Figure 2. MAX16839 EV Kit Component Placement Guide— Figure 3. MAX16839 EV Kit PCB Layout—Component Side Component Side ______________________________________________________________________________________...
  • Page 7 MAX16839 Evaluation Kit 1.0” Figure 4. MAX16839 EV Kit PCB Layout—Solder Side _______________________________________________________________________________________...

  • Page 8: Revision History

    2, 3 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.

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