MAX8643EVKIT+ Maxim Integrated Products, MAX8643EVKIT+ Datasheet

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MAX8643EVKIT+

Manufacturer Part Number
MAX8643EVKIT+
Description
Power Management Modules & Development Tools MAX8643 KIT MAX8643 KIT
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX8643EVKIT+

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX8643 evaluation kit (EV kit) is a fully assembled
and tested PCB that demonstrates the capabilities of
the MAX8643 integrated 3A step-down regulator. The
EV kit generates a +1.8V output voltage at load cur-
rents up to 3A from a 2.35V to 3.6V input voltage range.
The MAX8643 switches at 1MHz and up to 95% effi-
ciency with the supplied components.
19-0642; Rev 0; 10/06
Component List continued on next page.
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
C7, C13, C14
C1, C2
C3, C9
C4, C6
C10
C11
C12
C15
C5
C8
________________________________________________________________ Maxim Integrated Products
QTY
2
2
2
1
0
1
1
1
1
1
General Description
22µF ±10%, 6.3V X5R ceramic
capacitors (0805)
TDK C2012X5R0J226K
0.1µF ±10%, 25V X7R ceramic
capacitors (0603)
TDK C1608X7R1E104K
0.01µF ±10%, 50V X7R ceramic
capacitors (0603)
TDK C1608X7R1H103K
1µF ±10%, 16V X5R ceramic
capacitor (0603)
TDK C1608X5R1C105K
Not installed, ceramic capacitors
(0603)
0.022µF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H223K
560pF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H561K
1500pF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H152K
33pF ±5pF, 50V C0G ceramic
capacitor (0603)
TDK C1608C0G1H330CT
1000pF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H102K
Component List
DESCRIPTION
MAX8643 Evaluation Kit
o Internal 37mΩ On-Resistance MOSFETs
o 3A Output PWM Step-Down Regulator
o ±1% Output Accuracy over Load, Line, and
o Operates from 2.35V to 3.6V Input Supply
o Adjustable Output from 0.6V to (0.9 x V
o 500kHz to 2MHz Adjustable Frequency
o Allows All-Ceramic Capacitor Design
o Programmable Soft-Start Time
o 24-Pin, 4mm x 4mm Thin QFN Package
o REFIN for DDR Termination and Tracking
o Surface-Mount Components
o Assembled and Tested
The MAX8643 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
1) Preset the DC power supply to 3.3V. Turn off the
2) Remove the shunt from JU1.
3) Verify that no two pins are shunted together on
+ Denotes a lead-free and RoHS-compliant EV kit.
MAX8643EVKIT+
Temperature
Applications
2V to 4V at +3A variable DC power supply or battery
Digital multimeter (DMM)
Up to 3A load
Ammeter (optional)
power supply. Caution: Do not turn on the power
supply until all connections are made.
jumper JU3.
PART
TEMP RANGE
0°C to +70°C
Recommended Equipment
Ordering Information
24 TQFN (4mm x 4mm)
Quick Start
IC PACKAGE
Features
Procedure
IN
)
1

Related parts for MAX8643EVKIT+

MAX8643EVKIT+ Summary of contents

Page 1

... Thin QFN Package o REFIN for DDR Termination and Tracking Applications o Surface-Mount Components o Assembled and Tested Ordering Information PART TEMP RANGE MAX8643EVKIT+ 0°C to +70°C + Denotes a lead-free and RoHS-compliant EV kit. Recommended Equipment • +3A variable DC power supply or battery • Digital multimeter (DMM) • ...

Page 2

MAX8643 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION JU1, JU2 2 2-pin headers JU3, JU4 2 3-pin headers 0.47µH, 7.6mΩ, 9.6A inductor (7.7mm x 7mm x 2mm TOKO FDV0620-R47 R1 1 10Ω ±5%, resistor (0603) lead free ...

Page 3

LX MAX8643 OUT CTL1 CTL2 FB COMP 1a Figure 1. Preset and Adjustable Output Configuration When externally programming the MAX8643 (Figure 1a), install an 8.06kΩ resistor at R8. The output voltage is then determined by: 4836 ...

Page 4

MAX8643 Evaluation Kit IN C13 C1 C3 OPEN 22µF 0.1µF R1 10Ω 1µF R2 10kΩ C6 JU1 0.01µ JU3 JU4 REFIN 1kΩ JU2 C8 0.022µF Figure ...

Page 5

Figure 3. MAX8643 EV Kit Component Placement Guide—Top Silkscreen Figure 5. MAX8643 EV Kit PCB Layout—Layer 2 _______________________________________________________________________________________ MAX8643 Evaluation Kit Figure 4. MAX8643 EV Kit PCB Layout—Component Side 5 ...

Page 6

... 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. 6 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products Janet Freed Figure 7. MAX8643 EV Kit PCB Layout— ...

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