MAX8855EVKIT+【PDF 1/11 页】KIT EVAL FOR MAX8855

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19-5582; Rev 0; 10/10

MAX8855 Evaluation Kit

General Description

The MAX8855 evaluation kit (EV kit) is a fully assembled

and tested circuit board that contains all the compo-

nents necessary to evaluate the performance of the

MAX8855. The device is a high-efficiency dual step-

down regulator. The EV kit is powered from a 2.35V to

3.6V DC supply.

The EV kit is capable of delivering 1.8V at 5A from out-

put 1 and 1.2V at 5A from output 2. The device switch-

ing frequency is set to 1MHz and the two outputs

switch 180 ° out-of-phase. High-efficiency, internal dual

nMOS design keeps the board cool under heavy loads.

The voltage-mode control architecture and the high-

bandwidth (> 15MHz typ) voltage-error amplifier allow a

type III compensation scheme to be utilized to achieve

fast response under both line and load transients, and

also allow for ceramic output capacitors.

Programmable soft-start reduces input inrush current.

Two enable inputs allow the turning on/off of each output

individually, resulting in great flexibility for system-level

designs. A reference input facilitates output-voltage

tracking applications.

Ordering Information

Features

? 2.35V to 3.6V Input Supply Voltage Range

? 1.8V at 5A Output (Step-Down Regulator 1)

? 1.2V at 5A Output (Step-Down Regulator 2)

? 180° Out-of-Phase Operation Reduces Input

Ripple Current

? All-Ceramic-Capacitor Design

? High Efficiency

? 27m Ω On-Resistance Internal MOSFETs

? Fully Protected Against Overcurrent, Short

Circuit, and Overtemperature

? REFIN on One Channel for Tracking or External

Reference

? Integrated Boost Diodes

? Programmable Switching Frequency from 0.5MHz

to 2MHz

? Adjustable Outputs from 0.6V to (0.9 x V IN )

? Individual Enable Inputs and PWRGD Outputs

PART

MAX8855EVKIT+

TYPE

EV Kit

? Low-Cost Solution

? Fully Assembled and Tested

+Denotes lead(Pb)-free and RoHS-compliant.

Component Suppliers

SUPPLIER

Murata Electronics North America, Inc.

TDK Corp.

TOKO America, Inc.

PHONE

770-436-1300

847-803-6100

847-297-0070

WEBSITE

www.murata-northamerica.com

www.component.tdk.com

www.tokoam.com

Note: Indicate that you are using the MAX8855 when contacting these component suppliers.

Component List

DESIGNATION

QTY

DESCRIPTION

DESIGNATION

QTY

DESCRIPTION

22μF ±20%, 6.3V X5R ceramic

2200pF ±10%, 50V X7R ceramic

C1, C23

capacitors (1206)

TDK C3216X5R0J226M

capacitor (0402)

TDK C1005X7R1H222K

Murata GRM31CR60J226K

0.1μF ±10%, 16V X7R ceramic

Murata GRM155R71H222K

0.22μF ±10%, 16V X5R ceramic

C2, C3, C4, C6,

C16, C17, C20

capacitors (0402)

TDK C1005X7R1C104K

capacitor (0402)

TDK C1005X5R1C224K

Murata GRM155R71C104K

680pF ±10%, 50V X7R ceramic

C12

Not installed, capacitor

0.022μF ±10%, 25V X7R ceramic

capacitor (0402)

C9, C15

capacitors (0402)

TDK C1005X7R1H681K

Murata GRM1555R71H681K

TDK C1005X7R1E223K

________________________________________________________________ Maxim Integrated Products

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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