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MAX1806

500mA, Low-Voltage Linear Regulator in µMAX

Low Input and Output Voltage Linear Regulator Delivers Up to 500mA in a Tiny Power µMAX Package

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX1806 low-dropout linear regulator operates from a +2.25V to +5.5V supply and delivers a guaranteed 500mA load current with low 175mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see Selector Guide) or can be adjusted from +0.8V to +4.5V with an external resistive-divider.

An internal PMOS pass transistor allows low 210µA supply current, making this device ideal for portable equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, and other equipment, including base stations and docking stations.

Other features include an active-low, power-OK output that indicates when the output is out of regulation, a 0.02µA shutdown mode, short-circuit protection, and thermal shutdown protection. The MAX1806 comes in a miniature 1.3W, 8-pin power-µMAX® package with a metal pad on the underside of the package.

Data Sheet

Download	Rev 0	(PDF, 260kB)
E-Mail

Key Features

Guaranteed 500mA Output Current
Output Down to 0.8V
Low 175mV Dropout at 500mA
±1% Output Voltage Accuracy
- Preset at 0.8V, 1.5V, 1.8V, 2.5V, or 3.3V
- Adjustable from 0.8V to 4.5V
Power-OK Output
Low 210µA Ground Current
0.02µA Shutdown Current
Thermal Overload Protection
Output Current Limit
Tiny 1.3W, 8-Pin Power-µMAX Package

Applications/Uses

Cell Phones/Cordless Phones
Docking Stations
Notebook Computers
Palmtop Computers
PDAs
USB Hubs
Wireless Base Stations

Key Specifications:

Linear Regulators

Part Number

Regulators

V_IN
(V)

Preset V_OUT
(V)

Adj. V_OUT
(V)

V_DROPOUT @Rated I_LOAD
(V)

Rated I_LOAD
(mA)

I_CC
(µA)

Output Voltage Noise
(µV RMS)

Ref. Bypass

Low Batt./ Pwr. Fail Out

POK/Reset Thresh.
(V)

Watchdog

Reverse Batt. Protect.

Oper. Temp.
(°C)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

min

max

min

max

typ

max

typ

nom

max w/pins

See Notes

MAX1806

2.25

5.5

0.8

1.5

1.8

2.5

3.3

0.8

4.5

0.17

500

400

300

Vout-7%

-40 to +85

µMAX-EP/8

15.3

$1.50 @1k

See All Linear Regulators (146)

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

Application Notes

Tutorial 660		Regulator Topologies for Battery-Powered Systems
Application Note 1845		Choosing the Right DC-DC Converter for Automotive Applications

Reliability Reports

Reliability Report:	MAX1806.pdf
Show FIT data for:

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1806EUA08			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1806EUA08+			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1806EUA08+T			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1806EUA08-T			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1806EUA15			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1806EUA15+			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1806EUA15+T			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1806EUA15-T			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1806EUA18			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1806EUA18+			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1806EUA18+T			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1806EUA18-T			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1806EUA18/V+			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1806EUA18/V+T			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1806EUA25			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1806EUA25+			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1806EUA25+T			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1806EUA25-T			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1806EUA33			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1806EUA33+			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1806EUA33+T			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1806EUA33-T			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1806EUA33/V+			Active	µMAX-EP;8 pin;15.3 mm² Outline Drawing:21-0107 (PDF) Land Pattern: 90-0145 (PDF) Use pkgcode/variation: U8E+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1806EUA33/V+T			Active	uMAX; Land Pattern: Not Available	-40°C to +85°C	See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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More Information

Topmark Coding	MAX1806
New Product Press Release	[ 2001-06-30 ]

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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.: 19-2018 Rev 0; 2001-06-18
This page last modified: 2007-07-26