MAX8723EVKIT Maxim Integrated Products, MAX8723EVKIT Datasheet

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MAX8723EVKIT

Manufacturer Part Number
MAX8723EVKIT
Description
Display Modules & Development Tools MAX8723 KIT MAX8723 KIT
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX8723EVKIT.pdf (5 pages)

Specifications of MAX8723EVKIT

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX8723 evaluation kit (EV kit) is a fully assembled
and tested surface-mount circuit board that contains a
pulse-width-modulated (PWM) step-down DC-DC con-
verter. The EV kit is configured to operate with a
1.5MHz switching frequency. It operates from a +6V to
+13.2V DC supply voltage, is configured for a +3.3V
output, and can provide up to 2A output current.
The MAX8723 EV kit can be reconfigured to operate at
500kHz or 1MHz and can also drive an external syn-
chronous rectifier. In addition, the output voltage can
be adjusted from 2.0V to 3.6V by installing appropriate
feedback resistors R4 and R5.
The EV kit is a fully assembled and tested circuit board
that features low quiescent current and high conversion
efficiency (84%). Operation at 1.5MHz allows the use of
small surface-mount components.
19-0511; Rev 0; 4/06
Note: Indicate that you are using the MAX8723 when contacting these suppliers.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
DESIGNATION QTY
International Rectifier
Sanyo
Sumida
TDK
Toshiba
C1
C2
C3
C4
C5
C6
C7
SUPPLIER
1
1
1
1
1
1
1
________________________________________________________________ Maxim Integrated Products
4.7µF ±10%, 16V X5R
ceramic capacitor (0805)
TDK C2012X5R1C475K
0.1µF ±10%, 25V X7R
ceramic capacitor (0603)
TDK C1608X7R1E104K
1µF ±10%, 10V X5R
ceramic capacitor (0603)
TDK C1608X5R1A105K
0.22µF ±10%, 10V X5R
ceramic capacitor (0603)
TDK C1608X5R1A224K
0.1µF ±10%, 50V X7R
ceramic capacitor (0603)
TDK C1608X7R1H104K
22µF ±20%, 6.3V X7R
ceramic capacitor (0805)
TDK C2012X5R0J226M
47µF ±20%, 25V aluminum electrolytic
capacitor (6.3mm x 6.0mm)
Sanyo 25CV470AX
General Description
DESCRIPTION
310-322-3331
619-661-6835
847-545-6700
847-803-6100
949-455-2000
PHONE
MAX8723 Evaluation Kit
o +6V to +13.2V Input Range
o 2A Output Current
o 1.5MHz Switching Frequency (Selectable: 500kHz,
o +3.3V Output Voltage (Fixed Mode)
o 2.0V to 3.6V Output Voltage (Adjustable Mode)
o 84% Efficiency
o Fully Assembled and Tested
MAX8723EVKIT
DESIGNATION QTY
1MHz, Component Changes Required)
R1, R6
PART
JU1
JU2
C8
C9
D1
Q1
U1
R2
R3
R4
R5
L1
—
—
www.irf.com
www.sanyodevice.com
www.sumida.com
www.component.tdk.com
www.toshiba.com/taec
0
0
1
1
0
1
2
0
1
0
1
0
1
1
1
TEMP RANGE
0°C to +70°C
Component Suppliers
Ordering Information
N ot i nstal l ed , cer am i c cap aci tor ( 1206)
N ot i nstal l ed , cer am i c cap aci tor ( 0805)
3A, 30V Schottky diode (M-flat)
Toshiba CMS03
2-pin header
Not installed, 4-pin header
2.2µH power inductor
Sumida CDRH5D18NP-2R2NC
0Ω ±5% resistors (0603)
Not installed, short by PC trace (0603)
100kΩ ±5% resistor (0603)
Not installed, resistor (0805)
0Ω ±5% resistor (0805)
N ot i nstal led , n- channel M OS FE T ( S OT23)
MAX8723ETE+
(16-pin TQFN 4mm x 4mm)
Shunt
MAX8723 EV kit PC board
Component List
WEBSITE
DESCRIPTION
IC PACKAGE
16 TQFN (4mm x 4mm)
Features
1

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MAX8723EVKIT Summary of contents

Page 1

... Component Changes Required) o +3.3V Output Voltage (Fixed Mode) o 2.0V to 3.6V Output Voltage (Adjustable Mode) o 84% Efficiency o Fully Assembled and Tested Ordering Information PART TEMP RANGE MAX8723EVKIT 0°C to +70°C DESIGNATION QTY nstal cer cap aci tor ( 1206 nstal cer cap aci tor ( 0805) ...

Page 2

MAX8723 Evaluation Kit Recommended Equipment • 12V power supply • Voltmeters The MAX8723 EV kit is fully assembled and tested. Follow these steps to verify board operation. Do not turn on the power supply until all connections are ...

Page 3

External Synchronous Rectifier The EV kit provides for the use of an external synchro- nous rectifier. To utilize an external synchronous rectifier, install an adequate n-channel MOSFET (Q1) and remove or replace diode D1. Installing a smaller diode in conjunction ...

Page 4

MAX8723 Evaluation Kit Figure 2. MAX8723 EV Kit Component Placement Guide— Component Side Figure 4. MAX8723 EV Kit PC Board Layout—Internal Layer 2, GND Plane 4 _______________________________________________________________________________________ Figure 3. MAX8723 EV Kit PC Board Layout—Component Side Figure 5. MAX8723 EV ...

Page 5

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 5 © 2006 Maxim Integrated Products MAX8723 Evaluation Kit Figure 7. MAX8723 EV Kit Component Placement Guide— ...

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