_______________General Description

The MAX619 step-up charge-pump DC-DC converter

delivers a regulated 5V ±4% output at 50mA over tem-

perature. The input voltage range is 2V to 3.6V (two

battery cells).

board space because it requires only four external

capacitors: two 0.22

µF flying capacitors, and 10µF

capacitors at the input and output.

Low operating supply current (150

µA max) and low

shutdown supply current (1

µA max) make this device

ideal for small, portable, and battery-powered applica-

tions. When shut down, the load is disconnected from

the input.

The MAX619 is available in 8-pin DIP and SO packages.

________________________Applications

Two Battery Cells to 5V Conversion

Local 3V-to-5V Conversion

Portable Instruments & Handy-Terminals

Battery-Powered Microprocessor-Based Systems

5V Flash Memory Programmer

Minimum Component DC-DC Converters

Remote Data-Acquisition Systems

Compact 5V Op-Amp Supply

Regulated 5V Supply from Lithium Backup Battery

Switching Drive Voltage for MOSFETs in

Low-Voltage Systems

____________________________Features

o Regulated 5V ±4% Charge Pump

o Output Current Guaranteed over Temperature

≥ 2V)

≥ 3V)

o 2V to 3.6V Input Range

o No Inductors; Very Low EMI Noise

o Uses Small, Inexpensive Capacitors

o 500kHz Internal Oscillator

o Logic-Controlled 1

µA Max Shutdown

Supply Current

o Shutdown Disconnects Load from Input

o 8-Pin DIP and SO Packages

_______________Ordering Information

Regulated 5V Charge-Pump

DC-DC Converter

________________________________________________________________

Maxim Integrated Products

1

1

2

3

4

8

7

6

5

MAX619

DIP/SO

C1+

IN

OUT

C2+

C1-

SHDN

GND

C2-

TOP VIEW

__________________Pin Configuration

MAX619

OUT

C2+

C2-

IN

SHDN

C1+

C1-

INPUT

2V to 3.6V

ON/OFF

0.22

µF

OUTPUT

5V, 20mA

10

µF

10

µF

0.22

µF

GND

__________Typical Operating Circuit

19-0227; Rev 2; 5/96

EVALUATION

KIT MANUAL

FOLLOWS

DATA

SHEET

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

PART

TEMP. RANGE

PIN-PACKAGE

MAX619CPA

0°C to +70°C

8 Plastic DIP

MAX619CSA

0°C to +70°C

8 SO

MAX619C/D

0°C to +70°C

Dice*

MAX619EPA

-40°C to +85°C

8 Plastic DIP

MAX619ESA

-40°C to +85°C

8 SO

MAX619MJA

-55°C to +125°C

8 CERDIP