Maxim > Products > Power and Battery Management > MAX682, MAX683, MAX684

MAX682, MAX683, MAX684

3.3V Input to Regulated 5V Output Charge Pumps

Only 1µF Capacitor per 100mA Output

Overview

Technical Documents

Ordering Info

Status

Part Number	Status
MAX682	Active: In Production.
MAX683	This product is No Longer Available. See Ordering Information for recommended replacements.
MAX684	This product is No Longer Available. See Ordering Information for recommended replacements.

Description

The MAX682/MAX683/MAX684 charge-pump regulators generate 5V from a 2.7V to 5.5V input. They are specifically designed to serve as high-efficiency auxiliary supplies in applications that demand a compact design. The MAX682, MAX683, and MAX684 deliver 250mA, 100mA, and 50mA output current, respectively.

These complete 5V regulators require only one resistor and three external capacitors—no inductors are needed. High switching frequencies (externally adjustable up to 2MHz) and a unique regulation scheme allow the use of capacitors as small as 1µF per 100mA of output current. The MAX683/MAX684 are offered in a space-saving 8-pin µMAX package that is only 1.1mm high, while the MAX682 is available in an 8-pin SO.

Data Sheet

Download	Rev 1	(PDF, 168kB)
E-Mail

Key Features

Ultra-Small: 1µF Capacitors per 100mA of Output Current
No Inductors Required
1.1mm Height in µMAX Package (MAX683/MAX684)
Up to 250mA Output Current (MAX682)
Regulated ±4% Output Voltage
50kHz to 2MHz Adjustable Switching Frequency
2.7V to 5.5V Input Voltage
100µA Quiescent Current in Pulse-Skipping Mode
0.1µA Shutdown Current

Applications/Uses

3.3V to 5V Local Conversion Applications
3V to 5V GSM SIMM Cards
Backup Battery Boost Converters
Battery-Powered Applications
Flash Memory Supplies
Miniature Equipment
PCMCIA Cards

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

MAX682

Regulated

2.7

5.5

0.18

0.25

1000

-40 to +85

SOIC(N)/8

30.9

$2.48 @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 prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Typical Operating Circuit

Notes and Comments

Regulated 250mA charge pump (MAX682)
Regulated 100mA charge pump (MAX683)
Regulated 50mA charge pump (MAX684)

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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.: 19-0177 Rev 1; 1998-08-01
This page last modified: 2007-06-01