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MAX619

MAX619

Regulated 5V Charge Pump DC-DC Converter

Compact, Inductorless, Low-Profile 5V Backup Supply Fits in 0.1 Sq. Inch

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Overview

Description

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 0.22µF flying capacitors, and 10µF capacitors at the input and output.

Low operating supply current (150µA max) and low shutdown supply current (1µA 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.
MAX619: Typical Operating Circuit MAX619: Typical Operating Circuit Enlarge+

Key Features

  • Regulated 5V ±4% Charge Pump
  • Output Current Guaranteed over Temperature
    • 20mA (VIN ≥ 2V)
    • 50mA (VIN, ≥ 3V)
  • 2V to 3.6V Input Range
  • No Inductors; Very Low EMI Noise
  • Ultra-Small Application Circuit (0.1in²)
  • Uses Small, Inexpensive Capacitors
  • 500kHz Internal Oscillator
  • Logic-Controlled 1µA Max Shutdown Supply Current
  • Shutdown Disconnects Load from Input
  • 8-Pin DIP and SO Packages

Applications/Uses

  • 5V Flash Memory Programmer
  • Battery-Powered Microprocessor-Based Systems
  • Compact 5V Op-Amp Supply
  • Local 3.3V to 5V Conversion
  • Minimum Component DC-DC Converters
  • Portable Instruments and Handy-Terminals
  • Regulated 5V Supply from Lithium Backup Battery
  • Remote Data-Acquisition Systems
  • Switching Drive Voltage for MOSFETs in Low-Voltage Systems
  • Two Battery Cells to 5V Conversion

Parametric Specs

Part NumberTopologyVIN
(V)		VIN
(V)		ICC
(mA)		Unadj. VOUT
(V)		IOUT
(A)		Oper. Freq.
(kHz)		Oper. Temp.
(°C)		Package/PinsBudgetary
Price
minmaxmaxtypSee Notes
MAX619 
Doubler
Regulated
23.60.1750.05500
-40 to +85
0 to +70
CDIP/8
PDIP/8
SOIC (N)/8
$1.68 @1k
See All Charge Pumps (45)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources


MAX619EVKIT: Evaluation Kit for the MAX619

Technical Documents

Tutorial 5418 Driving Microelectromechanical Systems (MEMS) with Precision Control
App Note 3741 Analog ICs for Low Voltage Systems
Tutorial 725 DC-DC Conversion Without Inductors
Tutorial 658 Choose the Right Ultra-Thin DC-DC Converter for a Compact PCMCIA Card

Quality and Environmental Data

Product Reliability Reports: MAX619.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Quality And Environmental

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

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Related Resources

Technical Docs

Reference Designs

Type ID Title
Evaluation Board1136MAX619EVKIT Evaluation Kit for the MAX619