MAX619

` Regulated 5V ±4% Charge Pump
` Output Current Guaranteed over Temperature
20mA (V_IN 2V)
50mA (V_IN 3V)
` 2V to 3.6V Input Range
` No Inductors; Very Low EMI Noise
` Ultra-Small Application Circuit (0.1in<sup>2</sup>)
` Uses Small, Inexpensive Capacitors
` 500kHz Internal Oscillator
` Logic-Controlled 1A Max Shutdown Supply Current
` Shutdown Disconnects Load from Input
` 8-Pin DIP and SO Packages

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

V_IN to GND .......................................................-0.3V to +5.5V
V_OUT to GND ....................................................-0.3V to +5.5V
SHDN to GND...........................................-0.3V to (V_IN + 0.3V)
IOUT Continuous (Note 1).............................................120mA
Continuous Power Dissipation (T_A = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ........727mW
SO (derate 5.88mW/°C above +70°C).....................471mW
CERDIP (derate 8.00mW/°C above +70°C)..............640mW
Operating Temperature Ranges
MAX619C_ _ ..................................................0°C to +70°C
MAX619E_ _ ...............................................-40°C to +85°C
MAX619MJA ..............................................-55°C to +125°C
Storage Temperature Range ....................-65°C to +165°C
Lead Temperature (soldering, 10sec) ......................+300°C

Note 1: The MAX619 is not short-circuit protected.

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The MAX619 step-up charge-pump DC-DC converter delivers a regulated 5V ±4% output at 50mA over temperature. The input voltage range is 2V to 3.6V (two battery cells).

The complete MAX619 circuit fits into less than 0.1in² of board space because it requires only four external capacitors: two 0.22F flying capacitors, and 10mF capacitors at the input and output.

Low operating supply current (150A max) and low shutdown supply current (1A max) make this device ideal for small, portable, and battery-powered applications. When shut down, the load is disconnected from the input.

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