MAX16834EVKIT+ Maxim Integrated Products, MAX16834EVKIT+ Datasheet

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MAX16834EVKIT+

Manufacturer Part Number
MAX16834EVKIT+
Description
EVAL KIT FOR MAX16834
Manufacturer
Maxim Integrated Products
Datasheets

Specifications of MAX16834EVKIT+

Current - Output / Channel
1A
Outputs And Type
1, Non-Isolated
Voltage - Output
28V
Features
Dimmable
Voltage - Input
7 ~ 28V
Utilized Ic / Part
MAX16834
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX16834 evaluation (EV kit) is a fully assembled
and tested surface-mount PCB designed to evaluate
the MAX16834 pulse-width modulated (PWM) HB LED
driver controller in a step-up (boost) configuration and
optional step-up/step-down (buck-boost) operation.
The MAX16834 EV kit operates from a DC supply voltage
of 7V to 28V and requires up to 5A. The MAX16834 EV kit
circuit is configured to deliver up to 1A of current into
series LEDs with a maximum forward voltage of 28V.
The MAX16834 EV kit features two different types of
dimming control using either an analog linear input volt-
age or digital PWM input signal to control the LED
brightness. This EV kit has an undervoltage lockout
(UVLO) feature that disables the EV kit and overvoltage
protection that protects the circuit under no-load condi-
tions. The EV kit also features a FLT PCB pad to monitor
for open or short-circuit LED conditions at the LED+
and LED- PCB pads. The MAX16834 EV kit is a fully
assembled and tested surface-mount board.
19-4259; Rev 0; 8/08
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
C5, C14, C15,
C6, C17, C19
C2, C7, C8
C9, C10
C16
C11
C1
C3
C4
QTY
________________________________________________________________ Maxim Integrated Products
0
3
1
0
4
0
0
1
Not installed, ceramic capacitor
(10.3mm x 10.3mm)
10µF ±10%, 50V X7S ceramic
capacitors (1210)
Taiyo Yuden UMK325BJI06KM
0.1µF ±10%, 50V X7R ceramic
capacitor (0805)
Murata GRM21BR71H104K
Not installed, ceramic capacitor
(0805)
0.1µF ±10%, 25V X7R ceramic
capacitors (0603)
Murata GRM188R71E104K
Not installed, ceramic capacitors
(0603)
Not installed, ceramic capacitors
(1210)
10µF ±10%, 16V X7R ceramic
capacitor (1206)
Murata GRM31CR71C106K
General Description
DESCRIPTION
MAX16834 Evaluation Kit
♦ 7V to 28V Wide Supply Voltage Range
♦ Configured for Boost Operation
♦ Configurable for Buck-Boost Operation
♦ 1A Output Current
♦ Analog Linear Dimming Control
♦ PWM Dimming Control
♦ Open/Short-Circuit LED Fault Indicator (FLT)
♦ Demonstrates Output Overvoltage Protection
♦ Optional Load Dump Circuit
♦ Fully Assembled and Tested
+ Denotes lead-free and RoHS compliant.
DESIGNATION
C13, C18
D3, D5
MAX16834EVKIT+
C12
JU1
D1
D2
D4
N1
L1
PART
QTY
1
2
0
1
0
1
1
1
1
Ordering Information
0.22µF ±10%, 25V X7R ceramic
capacitor (0603)
Murata GRM188R71E224K
TDK C1608X7R1E224K
1000pF ±5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H102J
Not installed, diode (SOD323)
60V, 3A Schottky diode (SMB)
Diodes Inc. B360B-13-F
Not installed, diodes (SOD123)
100V, 300mA diode (SOD123)
Diodes Inc. 1N4148W-7-F
2-pin header
9.5µH, 11.2A inductor
Sumida CDEP147NP-9R5M-95
60V, 3.2A n-channel MOSFET
(6 TSOP)
Vishay Si3458DV-E3
(Top Mark: 58)
Component List
DESCRIPTION
TYPE
EV Kit
Features
1

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MAX16834EVKIT+ Summary of contents

Page 1

... Open/Short-Circuit LED Fault Indicator (FLT) ♦ Demonstrates Output Overvoltage Protection ♦ Optional Load Dump Circuit ♦ Fully Assembled and Tested Ordering Information PART MAX16834EVKIT+ + Denotes lead-free and RoHS compliant. DESIGNATION QTY 0.22µF ±10%, 25V X7R ceramic capacitor (0603) C12 ...

Page 2

MAX16834 Evaluation Kit DESIGNATION QTY DESCRIPTION 60V , 4.2A n- channel International Rectifier IRF7478 Q1 0 Not installed, transistor (3 SOT23 34kΩ ±1% resistor (0603) R2, R12 2 ...

Page 3

Required Equipment Before beginning, the following equipment is needed: • 28V, 5A power supply • Two digital voltmeters • A series-connected LED string rated at 1A (28V max) • A current probe to measure LED current The MAX16834 ...

Page 4

MAX16834 Evaluation Kit LED Dimming Operation Jumper JU1 configures the MAX16834 EV kit for analog linear dimming or PWM dimming control of the external LEDs. Install a shunt across jumper JU1 to control the LED brightness using a linear voltage ...

Page 5

Figure 1. MAX16834 EV Kit Schematic _______________________________________________________________________________________ MAX16834 Evaluation Kit 5 ...

Page 6

MAX16834 Evaluation Kit Figure 2. MAX16834 EV Kit Component Placement Guide—Component Side 6 _______________________________________________________________________________________ ...

Page 7

Figure 3. MAX16834 EV Kit PCB Layout—Component Side _______________________________________________________________________________________ MAX16834 Evaluation Kit 7 ...

Page 8

MAX16834 Evaluation Kit Figure 4. MAX16834 EV Kit PCB Layout—GND Layer 2 8 _______________________________________________________________________________________ ...

Page 9

Figure 5. MAX16834 EV Kit PCB Layout—VCC Layer 3 _______________________________________________________________________________________ MAX16834 Evaluation Kit 9 ...

Page 10

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

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