MAX16812EVKIT+ Maxim Integrated, MAX16812EVKIT+ Datasheet

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MAX16812EVKIT+

Manufacturer Part Number
MAX16812EVKIT+
Description
LED Lighting Development Tools Evaluation Kit for the MAX16812
Manufacturer
Maxim Integrated
Series
MAX16812r
Datasheet

Specifications of MAX16812EVKIT+

Product
Evaluation Kits
The MAX16812 evaluation kit (EV kit) demonstrates the
MAX16812 peak-current-mode PWM high-brightness LED
(HBLED) driver IC. The MAX16812 EV kit is configured in
a step-up/step-down topology with peak-current-mode
and average LED current control for the external LEDs.
The EV kit is capable of supplying stable LED output
currents up to 360mA and operates at supply voltages
between 7V and 28V. The maximum output voltage of
the LED string can be up to 15V.
The MAX16812 EV kit features two different types of
dimming controls, using either an analog linear input
voltage or a digital PWM input signal to control the
LEDs’ brightness. This EV kit also has an undervoltage
lockout (UVLO) feature that disables the EV kit and
overvoltage protection to protect the EV kit under
no-load conditions. The MAX16812 EV kit is a fully
assembled and tested surface-mount printed-circuit
board (PCB).
19-0965; Rev 0; 8/07
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.
D ESIG N A T IO N QTY
C1, C9, C10,
C16, C17
C5, C15,
C2, C18
C3, C8
C4, C6
C11
C12
C7
4
2
2
2
4
1
1
________________________________________________________________ Maxim Integrated Products
4.7µF ±10%, 50V X7R ceramic
capacitors (1210)
Murata GRM32R71H475K
0.1µF ±10%, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71H104K
3.3µF ±10%, 16V X7R ceramic
capacitors (0805)
Murata GRM21BR71C335KA73
0.22µF ±10%, 25V X7R ceramic
capacitors (0603)
Murata GRM188R71E224K
1000pF ±10%, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71H102K
220pF ±10%, 50V X7R ceramic
capacitor (0603)
Murata GRM188R71H221K
1µF ±10%, 16V X7R ceramic
capacitor (0603)
Murata GRM188R71C105K
General Description
DESCRIPTION
MAX16812 Evaluation Kit
♦ 7V to 28V Wide Supply Voltage Range
♦ Peak-Current-Mode Control
♦ Up to 360mA Output Current
♦ Analog Linear Dimming Control
♦ PWM Dimming Control
♦ Programmable Switching Frequency
♦ Shutdown Control
♦ Output Overvoltage Protection
♦ Fully Assembled and Tested
+ Denotes lead-free and RoHS-compliant.
D ESIG N A T IO N QTY
C19, C20
JU2, JU3
R4, R15
R2, R9
C13
C14
MAX16812EVKIT+
JU1
D1
D2
N1
R1
R3
L1
PART
1
1
0
1
1
1
2
1
1
1
2
1
2
0.47µF ±10%, 25V X7R ceramic
capacitor (0805)
Murata GRM219R71E474K
0.047µF ±10%, 25V X7R ceramic
capacitor (0603)
Murata GRM188R71E473K
Not installed, capacitors
3A, 60V Schottky diode (SMB)
Diodes Inc. B360B
150mA, 100V diode (SOD-323)
Diodes Inc. 1N4148WS-7-4
3-pin header
2-pin headers
68µH, 3A inductor
Coilcraft DO3340P-683ML
60V, 4.3A n-channel MOSFET
(6-pin SuperSOT)
Fairchild Semiconductor FDC5612
100kΩ ±1% resistor (0603)
100kΩ potentiometers (single turn)
1kΩ ±1% resistor (0603)
10kΩ ±1% resistors (0603)
Ordering Information
Component List
DESCRIPTION
TYPE
EV Kit
Features
1

Related parts for MAX16812EVKIT+

MAX16812EVKIT+ Summary of contents

Page 1

... PWM Dimming Control ♦ Programmable Switching Frequency ♦ Shutdown Control ♦ Output Overvoltage Protection ♦ Fully Assembled and Tested Ordering Information PART MAX16812EVKIT+ + Denotes lead-free and RoHS-compliant. D ESIG QTY 0.47µF ±10%, 25V X7R ceramic C13 1 capacitor (0805) Murata GRM219R71E474K 0.047µ ...

Page 2

... R14 1 resistor (1206) Panasonic ERJ-8RQF1R5V 2.32k Ω ±1% resistor (0603) R16 1 TP1, TP2, TP3 3 PC mini red test points Maxim integrated high-voltage LED driver with analog and PWM U1 1 dimming control MAX16812ATI+ (28-pin TQFN, 5mm x 5mm x 0.8mm) — 3 Shunts — ...

Page 3

Recommended Equipment Before beginning, the following equipment is needed: • 28V, 2A power supply • Two digital voltmeters • A series-connected LED string rated at 350mA (15V, max) • One current probe to measure LED current The MAX16812 ...

Page 4

MAX16812 Evaluation Kit PWM Dimming Control (Jumpers JU2 and JU3) PWM dimming is achieved by turning on and off the MOSFET (N1) in series with the LED string. LED dim- ming is achieved on the MAX16812 EV kit by applying ...

Page 5

VREF AGND AGND PGND VREF VIN VIN C1 1 3.3μF JU1 4.7μF 2 50V 3 PGND L_REG 0.1μF 3.3μF 9 L_REG R15 C6 10kΩ 0.22μ TGRM R16 2.32kΩ 1% JU3 11 DD ...

Page 6

MAX16812 Evaluation Kit Figure 2. MAX16812 EV Kit Component Placement Guide— Component Side 6 _______________________________________________________________________________________ Figure 3. MAX16812 EV Kit PCB Layout—Component Side ...

Page 7

Figure 4. MAX16812 EV Kit PCB Layout—GND Layer 2 _______________________________________________________________________________________ MAX16812 Evaluation Kit Figure 5. MAX16812 EV Kit PCB Layout—VCC Layer 3 7 ...

Page 8

... 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. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products ...

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