MAX8631XEVKIT 查看數據表（PDF） - Maxim Integrated
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MAX8631XEVKIT Datasheet PDF : 8 Pages
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19-3834; Rev 1; 6/08
MAX8631X Evaluation Kit
General Description
The MAX8631X evaluation kit (EV kit) is a fully assem-
bled and tested circuit for evaluating the MAX8631X
white LED 1x/1.5x/2x charge pump with two LDOs. The
MAX8631X EV kit drives 4 white LEDs for backlighting
and uses 4 flash LED drivers to drive a flash LED mod-
ule at a high current. The two 200mA LDOs are also
available for evaluation. In addition to the LED driver
circuit and LDOs, the EV kit includes one pulse-genera-
tor circuit and two momentary pushbutton switches that
are used for testing the single-wire, serial-pulse-dim-
ming and flash features of the MAX8631X. The
MAX8631X EV kit can also evaluate the MAX8631Y. To
evaluate the MAX8631Y, order a free sample along with
this EV kit.
Ordering Information
PART
MAX8631XEVKIT
TYPE
EV Kit
Features
o MAX8631X Powers Up to 4 Main LEDs and 4 Flash
LEDs
o EV Kit Powers 4 Main LEDs and a Flash LED
Module
o 94% Maximum/85% Average Efficiency
(PLED/PBATT) over Li+ Battery Discharge
o 0.2% Typical LED Current Matching
o Adaptive 1x/1.5x/2x Mode Switchover
o Single-Wire, Serial-Pulse Interface (3% to 100%
Brightness)
o Thermal TA Derating Function
o Two Internal Low-Noise 200mA LDOs
o 2.7V to 5.5V Supply Voltage Range
o Soft-Start, Overvoltage, and Thermal-Shutdown
Protection
o 4mm x 4mm 28-Pin Thin QFN IC Package
o Fully Assembled and Tested
Component List
DESIGNATION
C1, C5
QTY
DESCRIPTION
10µF ±20%, 6.3V X5R ceramic
2
capacitors (0805)
TDK C2012X5R0J106M or
Murata GRM219R60J106M
C3, C4, C6, C7
1µF ±20%, 6.3V X5R ceramic
4
capacitors (0402)
TDK C1005X5R0J105M or
Murata GRM155R60J105K
0.01µF ±10%, 25V X7R ceramic
C8
1
capacitor (0402)
TDK C1005X7R1E103K or
Murata GRM155R71E103K
1000pF ±10%, 50V X7R ceramic
C9
1
capacitor (0402)
TDK C1005X7R1H102K or
Murata GRM155R71H102K
C10
D1–D4
2.2µF ±10%, 6.3V X5R ceramic
1 capacitor (0603)
TDK C1608X5R0J225K or
Murata GRM185R60J225K
4 White LEDs
Nichia NSCW215T
DESIGNATION
D5
D6
JU1, JU2,
JU3, JU5
JU4
JU6–JU9
R1
R2
R3
R4
R5
S1, S2
U1
U2
—
—
QTY
DESCRIPTION
1
LED
Nichia NBCW011T
1
SOD-523 diode, CMOSH-3
Central Semiconductor
4 3-pin headers
1 2-pin headers
0 Not installed, PC board shorts
1 6.81kΩ ±1% resistor (0402)
1 5.11kΩ ±1% resistor (0402)
1 22.1kΩ ±1% resistor (0402)
1 100kΩ ±1% resistor (0402)
1 2.2kΩ ±1% resistor (0402)
2
Momentary pushbutton switches
Panasonic EVQ-PHP03T
White LED charge pump
1 (28 TQFN-EP*)
Maxim MAX8631XETI
1
6-channel PMIC (40 TQFN)
Maxim MAX6816EUS-T
5 Shunt, two positions
1 PCB: MAX8631X Evaluation Kit
*EP = Exposed pad.
________________________________________________________________ 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.
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