19-0227; Rev 2; 5/96
Re g u la t e d 5 V Ch a rg e -P u m p
DC-DC Co n ve rt e r
MAX619
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
♦ Regulated 5V ±4% Charge Pump
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).
♦ Output Current Guaranteed over Temperature
20mA (V ≥ 2V)
IN
50mA (V ≥ 3V)
IN
2
The complete MAX619 circuit fits into less than 0.1in of
♦ 2V to 3.6V Input Range
board space because it requires only four external
capacitors: two 0.22µF flying capacitors, and 10µF
capacitors at the input and output.
♦ No Inductors; Very Low EMI Noise
2
♦ Ultra-Small Application Circuit (0.1in )
♦ Uses Small, Inexpensive Capacitors
♦ 500kHz Internal Oscillator
Low operating supply current (150µA max) and low
shutdown supply current (1µA max) make this device
ideal for small, portable, and battery-powered applica-
tions. When shut down, the load is disconnected from
the input.
♦ Logic-Controlled 1µA Max Shutdown
Supply Current
♦ Shutdown Disconnects Load from Input
♦ 8-Pin DIP and SO Packages
The MAX619 is available in 8-pin DIP and SO packages.
________________________Ap p lic a t io n s
_______________Ord e rin g In fo rm a t io n
Two Battery Cells to 5V Conversion
Local 3V-to-5V Conversion
PART
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
8 Plastic DIP
8 SO
MAX619CPA
MAX619CSA
MAX619C/D
MAX619EPA
MAX619ESA
MAX619MJA
Portable Instruments & Handy-Terminals
Battery-Powered Microprocessor-Based Systems
5V Flash Memory Programmer
0°C to +70°C
0°C to +70°C
Dice*
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
8 Plastic DIP
8 SO
Minimum Component DC-DC Converters
Remote Data-Acquisition Systems
Compact 5V Op-Amp Supply
8 CERDIP
* Dice are specified at T = +25 °C.
A
Regulated 5V Supply from Lithium Backup Battery
Switching Drive Voltage for MOSFETs in
Low-Voltage Systems
__________________P in Co n fig u ra t io n
__________Typ ic a l Op e ra t in g Circ u it
TOP VIEW
IN
INPUT
2V to 3.6V
10µF
OUT
OUTPUT
5V, 20mA
10µF
C1+
IN
C1-
1
2
3
4
8
7
6
5
MAX619
GND
ON/OFF
SHDN
C1+
SHDN
GND
C2-
MAX619
C2+
C2-
OUT
C2+
0.22µF
0.22µF
C1-
DIP/SO
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800