MAX679EUA Maxim Integrated Products, MAX679EUA Datasheet

MAX679EUA

Manufacturer Part Number

MAX679EUA

Description

Charge Pumps

Manufacturer

Maxim Integrated Products

Datasheets

1.MAX679EUA.pdf (6 pages)

2.MAX679EUA.pdf (6 pages)

Specifications of MAX679EUA

Function

Step Up

Output Voltage

3.3 V

Output Current

20 mA

Maximum Operating Temperature

+ 85 C

Package / Case

uMAX-8

Minimum Operating Temperature

- 40 C

Mounting Style

SMD/SMT

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX679EUA

Manufacturer:

MAXIM

Quantity:

110

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX679EUA

Manufacturer:

MAXIM/美信

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX679EUA+T

Manufacturer:

FREESCALE

Quantity:

439

Current page: 1 of 6
Download datasheet (77Kb)

The MAX679 step-up, regulated charge pump gener-

ates a 3.3V ±4% output voltage from a 1.8V to 3.6V

input voltage (two alkaline, NiCd, or NiMH; or one

Lithium-Ion battery). Output current is 20mA (min) from

a 2.0V input. Only three external capacitors are needed

to build a complete DC-DC converter.

The MAX679’s switching frequency is pin selectable at

330kHz or 1MHz to allow trade-offs between lowest

supply current and smallest-size capacitors. The logic

shutdown function reduces the supply current to 5µA

(max) and disconnects the load from the input. Special

soft-start circuitry prevents excessive current from

being drawn from the battery during start-up. This DC-

DC converter requires no inductors and has low EMI. It

is available in the ultra-small µMAX package, which is

only 1.11mm high and half the area of an 8-pin SO.

________________________Applications

19-1217; Rev 0; 4/97

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

__________Typical Operating Circuit

_______________General Description

2V to 3.6V

OFF/ON

INPUT

Battery-Powered Applications

Miniature Equipment

Backup-Battery Boost Converters

Translators

Two-Way Pagers

PGND

________________________________________________________________ Maxim Integrated Products

FSET

SHDN

MAX679

GND

OUT

C1+

C1-

OUT

OUTPUT

3.3V, 20mA

Regulated 3.3V Charge Pump

* Dice are tested at T

____________________________Features

______________Ordering Information

MAX679C/D

MAX679EUA

__________________Pin Configuration

Regulated 3.3V ±4% Output

Ultra-Small:

1.1mm-High, 8-Pin µMAX Package

No Inductors Required

Up to 1MHz Operation

(small external components)

Fits into 0.05 in.

Up to 85% Efficiency

1.8V to 3.6V Input Voltage Range

50µA Quiescent Supply Current

1µA Shutdown Current

TOP VIEW

PART

SHDN

FSET

GND

= +25°C only.

TEMP. RANGE

-40°C to +85°C

0°C to +70°C

MAX679

MAX

PIN-PACKAGE

Dice*

8 µMAX

OUT

C1+

C1-

PGND

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