Maxim Integrated MAX8790A Evaluation Kit MAX8790AEVKIT+ MAX8790AEVKIT+ Data Sheet

Product codes
MAX8790AEVKIT+
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General Description
The MAX8790A evaluation kit (EV kit) is a fully assem-
bled and tested surface-mount PCB that evaluates the
high-efficiency MAX8790A white LED (WLED) driver.
The MAX8790A EV kit utilizes a step-up DC-DC con-
verter to generate the voltage required to drive up to six
strings of eight surface-mount WLEDs. The EV kit is
powered by a 7V to 21V input power supply (single-
supply mode) and can be configured to provide a fixed
20mA or adjustable 15mA to 25mA full-scale LED cur-
rent. In addition, the MAX8790A provides LED current
control through either analog or digitally adjusted
pulse-width modulation (DPWM) dimming modes. As
shipped, the MAX8790A EV kit is configured for evalua-
tion with two strings of eight WLEDs.
Features
♦ 7V to 21V Input Range
♦ 86% Efficiency (VIN = 12V, Load = Two WLED
Strings)
♦ WLED Drives Up to 25mA/String
♦ Drives Two Strings of Eight WLEDs (Capable of
Driving Up to Six Strings)
♦ Analog or Direct DPWM Dimming Control
♦ 100:1 Dimming Range
♦ 750kHz PWM Switching Frequency (Selectable:
1MHz or 500kHz, Component Change Required)
♦ Fully Assembled and Tested
Evaluates:  MAX8790A
MAX8790A Evaluation Kit
________________________________________________________________
Maxim Integrated Products
1
19-0766; Rev 1; 3/08
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
+
Denotes lead-free and RoHS-compliant.
PART
TYPE
MAX8790AEVKIT+
EV Kit
DESIGNATION
QTY
DESCRIPTION
C1, C3, C4
3
0.1µF ±10%, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71H104K
TDK C1608X7R1H104K
C2
1
1µF ±10%, 6.3V X5R ceramic
capacitor (0603)
Murata GRM188R60J105K
TDK C1608X5R1A105K
C5
1
2.2µF ±10%, 50V X7R ceramic
capacitor (1206)
Murata GRM31CR71H225K
KEMET C1206C225K5RAC
C6, C8,
C11–C16
0
Not installed, ceramic capacitors
(1206)
C7
1
10µF ±10%, 25V X5R ceramic
capacitor (1206)
Murata GRM31CR61E106KA
TDK C3216X5R1E106K
C9, C10, C17
0
Not installed, ceramic capacitors
(0603)
DESIGNATION
QTY
DESCRIPTION
D1
1
2A, 40V Schottky diode (M-Flat)
Toshiba CMS11 (TE12L, Q)
Nihon EC21QS04
D2–D17
16
White LEDs
Nichia NSSW008C
OPTEK OVSRWACR6
D18–D49
0
Not installed, white LEDs
JU1, JU3,
JU6, JU7
4
3-pin headers
JU2, JU4,
JU5, JU12
4
2-pin headers
JU8–JU11,
JU13
0
Not installed, 3-pin headers
L1
1
4.7µH, 2.15A, 64.1m
Ω power inductor
TDK LTF5022T-4R7N2R0
Sumida CDRH5D16-4R7 (1.8mm)
N1
1
60V, 2.8A n-channel MOSFET
(6 TSOP)
SANYO Semiconductor CPH6424
(Top Mark: ZA)
Fairchild Semiconductor FDC5612
(Top Mark: 562)