Rainbow-electronics MAX711 User Manual download pdf

_______________General Description

The MAX710/MAX711 integrate a step-up DC-DC con-

verter with a linear regulator to provide step-up/down

voltage conversion. They are optimized for battery

applications where the input varies above and below

the regulated output voltage. They have an input range

from +1.8V to +11V. Typical efficiency when boosting

battery inputs is 85%.

The MAX710/MAX711 can be configured for minimum

noise or optimum efficiency. Shutdown control turns off

the part completely, disconnecting the input from the

output (I

SHDN

= 0.2µA). Standby control turns off only

the step-up converter and leaves the low-power linear

regulator active (I

= 7µA).

The MAX710 has a preset 3.3V or 5V output voltage.

The MAX711 has an adjustable output that can be set

from +2.7V to +5.5V with two resistors. Both devices

come in 16-pin narrow SO packages.

________________________Applications

Single-Cell, Lithium-Powered Portable Devices

Digital Cameras

2- to 4-Cell AA Alkaline Hand-Held Equipment

3.3V and Other Low-Voltage Systems

2-, 3-, and 4-Cell Battery-Powered Equipment

Battery-Powered Devices with AC Input Adapters

____________________________Features

♦ Step-Up/Down Voltage Conversion

♦ +1.8V to +11V Input Range

♦ Output:

5V/250mA at V

= 1.8V

5V/500mA at V

= 3.6V

♦ No External FETs Required

♦ Load Disconnected from Input in Shutdown

♦ Battery Drain:

200µA No-Load (V

= 4V)

7µA in Standby

0.2µA when Off

♦ Low-Noise and High-Efficiency Modes

MAX710/MAX711

3.3V/5V or Adjustable,

Step-Up/Down DC-DC Converters

________________________________________________________________

Maxim Integrated Products

LX LX

PGND

GND

REF

LBI+

LBI-

OUT

TOP VIEW

MAX710

MAX711

PGND

ILIM

3/5 (FB)

SHDN

STBY

N/E

LBO

( ) IS FOR THE MAX711.

__________________Pin Configuration

MAX710

LBI+ LBO

N/E

SHDN

OFF

STBY

3/5

LBI-

REF PGND

0.1µF

GND ILIM

OUTPUT

3.3V/5V

+1.8V TO +11V

INPUT

OUT

3.3V

STBY

__________Typical Operating Circuit

19-1254; Rev 0; 7/97

PART

MAX710C/D

MAX710ESE

MAX711C/D

0°C to +70°C

-40°C to +85°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

Dice

16 Narrow SO

Dice

EVALUATION KIT MANUAL

FOLLOWS DATA SHEET

______________Ordering Information

MAX711ESE -40°C to +85°C 16 Narrow SO

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

For small orders, phone 408-737-7600 ext. 3468.

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MAX710/MAX711 1
3.3V/5V or Adjustable 1

Summary of Contents

Page 1 - 3.3V/5V or Adjustable

_______________General DescriptionThe MAX710/MAX711 integrate a step-up DC-DC con-verter with a linear regulator to provide step-up/downvoltage conver

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MAX710/MAX7113.3V/5V or Adjustable, Step-Up/Down DC-DC Converters 10 _________________________________________________________________________________

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