Rainbow-electronics MAX17067 Bedienungsanleitung PDF herunterladen

General Description

The MAX17067 boost converter incorporates high-

performance (at 1.2MHz), current-mode, fixed-frequency,

pulse-width modulation (PWM) circuitry with a built-in

0.15Ω n-channel MOSFET to provide a highly efficient

regulator with fast response.

High switching frequency (640kHz or 1.2MHz selectable)

allows for easy filtering and faster loop performance. An

external compensation pin provides the user flexibility in

determining loop dynamics, allowing the use of small,

low equivalent-series-resistance (ESR) ceramic output

capacitors. The device can produce an output voltage

as high as 18V.

Soft-start is programmed with an external capacitor, which

sets the input-current ramp rate. The MAX17067 is avail-

able in a space-saving 8-pin μMAX

package. The ultra-

small package and high switching frequency allow the

total solution to be less than 1.1mm high.

Application

LCD Displays

Features

o 90% Efficiency

o Adjustable Output from V

to 18V

o 2.4A, 0.15Ω, 22V Power MOSFET

o +2.6V to +4.0V Input Range

o Pin-Selectable 640kHz or 1.2MHz Switching

Frequency

o Programmable Soft-Start

o Small 8-Pin µMAX Package

o Integrated Input Voltage Clamp Circuit

MAX17067

Low-Noise Step-Up DC-DC Converter

________________________________________________________________

Maxim Integrated Products

LXGND

FREQFB

COMP

μMAX

TOP VIEW

MAX17067

SHDN

2.6V TO 4V

GND

FREQ

OUT

COMP

SHDN

MAX17067

ON/OFF

Typical Operating Circuit

19-3106; Rev 0; 1/08

Pin Configuration

Ordering Information

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.

EVALUATION KIT

AVAILABLE

PART TEMP RANGE

PIN-

PACKAGE

PKG

CODE

MAX17067EUA+ -40°C to +85°C 8 μMAX

U8+1

μMAX is a registered trademark of Maxim Integrated Products, Inc.

Denotes a lead-free package.

1 2 3 4 5 6 ... 12 13

MAX17067 1
MAX17067MAX17067 8

Inhaltsverzeichnis

Seite 1 - MAX17067

General DescriptionThe MAX17067 boost converter incorporates high-performance (at 1.2MHz), current-mode, fixed-frequency,pulse-width modulation (PWM)

Seite 2

MAX17067Low-Noise Step-Up DC-DC Converter10 ______________________________________________________________________________________Diode SelectionThe o

Seite 3

MAX17067Low-Noise Step-Up DC-DC Converter______________________________________________________________________________________ 11Application Circuits

Seite 4

MAX17067Layout ProcedureGood PCB layout and routing are required in high-fre-quency switching power supplies to achieve good regu-lation, high efficie

Seite 5

MAX17067Low-Noise Step-Up DC-DC ConverterMAX17067Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in

Seite 6

MAX17067Low-Noise Step-Up DC-DC Converter2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RAT

Seite 7

MAX17067Low-Noise Step-Up DC-DC Converter_______________________________________________________________________________________ 3ELECTRICAL CHARACTER

Seite 8 - MAX17067MAX17067

Typical Operating Characteristics(Circuit of Figure 1, VIN= 3.3V, fOSC= 640kHz, TA= +25°C, unless otherwise noted.)MAX17067Low-Noise Step-Up DC-DC Con

Seite 9

MAX17067Low-Noise Step-Up DC-DC Converter_______________________________________________________________________________________500.52.52.01.51.03.53.

Seite 10

MAX17067Low-Noise Step-Up DC-DC Converter6 _______________________________________________________________________________________Pin DescriptionSwitc

Seite 11

MAX17067Low-Noise Step-Up DC-DC Converter_______________________________________________________________________________________ 7IN Supply Clamp Circ

Seite 12

MAX17067MAX17067Low-Noise Step-Up DC-DC Converter8 _______________________________________________________________________________________Soft-StartTh

Seite 13

MAX17067Low-Noise Step-Up DC-DC Converter_______________________________________________________________________________________ 9The maximum output c

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Rainbow-electronics MAX17067 Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Sensoren Rainbow-electronics MAX17067 herunter. Rainbow Electronics MAX17067 User Manual Benutzerhandbuch

Inhaltsverzeichnis

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