Rainbow-electronics MAX1714A User Manual download pdf

General Description

The MAX1714A evaluation kit (EV kit) demonstrates

a standard 4A application circuit. This DC-DC con-

verter steps down high-voltage batteries and/or

AC adapters, generating a precision, low-voltage

rail for use as chipset, DRAM, and other low-voltage

supplies. For higher current applications up to 12A,

refer to the MAX1714A data sheet.

The MAX1714A EV kit provides a 2.5V output voltage

from a +5V to +24V battery input range. It delivers up to

4A output current with greater than 90% efficiency while

operating at a 300kHz switching frequency, and has

superior line- and load-transient response.

This EV kit is a fully assembled and tested circuit

board. It also allows evaluation of other output voltages

in the 1.0V to 5.5V range by changing feedback resis-

tors R1 and R2.

Features

♦ +5V to +24V Input Voltage Range

♦ Preset 2.5V Output Voltage

♦ 1.0V to 5.5V Adjustable Output

♦ 4A Output Current

♦ 94% Efficient (V

OUT

= 2.5V, V

BATT

= 7V,

LOAD

= 2A)

♦ 300kHz Switching Frequency

♦ No Current-Sense Resistor

♦ Power-Good Output

♦ Low-Profile Components

♦ Fully Assembled and Tested

Evaluates: MAX1714A

MAX1714A Evaluation Kit

________________________________________________________________ Maxim Integrated Products 1

19-1536; Rev 1; 12/99

Component List

PART

MAX1714AEVKIT 0°C to +70°C

TEMP. RANGE IC PACKAGE

20 QSOP

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

Ordering Information

Not installed0

R1, R2,

R3, R8, R9

Dual N-channel MOSFET

Fairchild FDS6982A

1N1A, N1B

2-pin headers2JU1, JU2

DESIGNATION DESCRIPTIONQTY

100kΩ ±5% resistor (0805)1R4

1MΩ ±5% resistors (0805)2R5, R6

200Ω ±5% resistor (0805)1R8

MAX1714AEEP (20-pin QSOP)1U1

Shunt (JU1)1None

MAX1714A PC board1None

MAX1714A data sheet1None

MAX1714A EV kit data sheet1None

100mA, 30V Schottky diode

Central Semiconductor CMPSH-3

1D2

1A, 30V Schottky diode

Nihon EP10QY03 or EC10QS03 or

Motorola MBRS130LT3

1D1

3.3µF, 10V, X5R ceramic cap (1206)

Taiyo Yuden LMK316BJ335ML

1C6

DESIGNATION

4.7µF, 10V, X5R ceramic cap (1206)

Taiyo Yuden LMK316BJ475ML

1C5

0.22µF ceramic capacitor (1206)1C4

0.1µF ceramic capacitor (0805)1C3

330µF, 6.3V, 45mΩ C100M

low-ESR capacitor

Sanyo 6TPB330M or

Kemet T510X337M010AS

1C2

10µF, 25V ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106KM or

Tokin C34Y5U1E106Z

1C1

DESCRIPTIONQTY

2200pF ceramic capacitor (0805)1C7

20Ω ±5% resistor (0805)1R7

4.7µH power inductor

Sumida CDRH124-4R7MC (shielded),

Coiltronics UP2B-4R7 (unshielded)

1L1

1 2 3 4 5 6

Summary of Contents

Page 1 - MAX1714A Evaluation Kit

General DescriptionThe MAX1714A evaluation kit (EV kit) demonstratesa standard 4A application circuit. This DC-DC con-verter steps down high-voltage b

Page 2

Equipment Needed• +5V to +24V power supply, battery, or notebook ACadapter• +5V (at 100mA) DC bias power supply• Dummy load capable of sinking 4A • Di

Page 3

Evaluates: MAX1714AMAX1714A Evaluation Kit_______________________________________________________________________________________ 3Table 4. Jumper JU

Page 4

Evaluates: MAX1714AMAX1714A Evaluation Kit4 _______________________________________________________________________________________Figure 1. MAX1714

Page 5

Evaluates: MAX1714AMAX1714A Evaluation Kit_______________________________________________________________________________________ 5Figure 2. MAX1714A

Page 6

Evaluates: MAX1714AMAX1714A Evaluation Kit6 _______________________________________________________________________________________NOTES

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Rainbow-electronics MAX1714A User Manual

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Summary of Contents

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