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MAX619

Regulated 5V Charge Pump DC-DC Converter

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

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

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.

Data Sheet

Download	Rev 2	(PDF, 67kB)
E-Mail

An evaluation kit is available: MAX619EVKIT

Key Features

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 (0.1in²)
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

Key Specifications:

Charge Pumps

Part Number

Topology

V_IN
(V)

I_CC
(mA)

Unadj. V_OUT
(V)

I_OUT
(A)

Oper. Freq.
(kHz)

Oper. Temp.
(°C)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

min

max

typ

max w/pins

See Notes

MAX619

Doubler

Regulated

3.6

0.17

0.05

500

-40 to +85

0 to +70

79.7

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 prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Typical Operating Circuit

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-0227 Rev 2; 1996-05-01
This page last modified: 2008-03-26