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MAX1818

500mA, Low-Dropout Linear Regulator in SOT23

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX1818 low-dropout linear regulator operates from a +2.5V to +5.5V supply and delivers a guaranteed 500mA load current with low 120mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see Selector Guide in the full data sheet) or can be adjusted from 1.25V to 5.0V with an external resistive divider.

An internal PMOS pass transistor allows the low 125µA supply current to remain independent of load, making this device ideal for portable battery-operated equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, base stations, and notebook computers.

Other features include an active-low open-drain reset output that indicates when the output is out of regulation, a 0.1µA shutdown, short-circuit protection, and thermal shutdown protection. The device is available in a miniature 800mW 6-pin SOT23 package.

Data Sheet

Download	Rev 2	(PDF, 204kB)
E-Mail

An evaluation kit is available: MAX1818EVKIT

Key Features

Guaranteed 500mA Output Current
Low 120mV Dropout at 500mA
±1% Output Voltage Accuracy
- Preset at 1.5V, 1.8V, 2.0V, 2.5V, 3.3V, 5V
- Adjustable from 1.25V to 5.0V
Power OK Output
Low 125µA Ground Current
0.1µA Shutdown Current
Thermal Overload Protection
Output Current Limit
Tiny 800mW 6-Pin SOT23 Package

Applications/Uses

Cell Phones/Cordless Phones
Docking Stations
Notebook Computers
Palmtop Computers
PDAs and Other Handheld Devices
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

MAX1818

2.5

5.5

1.5

1.8

2.5

3.3

1.25

0.12

500

250

115

Vout-7%

-40 to +85

SOT/6

$1.15 @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

Application Note 3741		Analog ICs for Low Voltage Systems
Application Note 4404		Using a Linear Regulator to Produce a Constant Current Source

Reliability Reports

Reliability Report:	MAX1818.pdf
Show FIT data for:

Software/Models

none

Ordering Information

Filters:

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Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1818EUT15#G16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT15#TG16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT15-T			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F-6*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1818EUT15-TG077			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F-6*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1818EUT18#G16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT18#TG16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT18+T			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F+6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT18-T			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F-6*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1818EUT18-TG05			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F-6*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1818EUT20#G16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-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
MAX1818EUT20#TG16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT20-T			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F-6*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1818EUT25#G16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT25#T			Active	SOT; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1818EUT25#TG16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT25+T			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F+6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT25-T			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F-6*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1818EUT33#G16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT33#TG16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT33+T			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F+6*	-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
MAX1818EUT33-T			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F-6*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1818EUT50#G16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT50#TG16			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6FH-6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1818EUT50-T			Active	SOT;6 pin;9 mm² Outline Drawing:21-0058 (PDF) Land Pattern: 90-0175 (PDF) Use pkgcode/variation: U6F-6*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

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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Evaluation Kits

MAX1818EVKIT

Evaluation Kit for the MAX1818EUT15, MAX1818EUT18, MAX1818EUT20, MAX1818EUT25, MAX1818EUT33, MAX1818EUT50

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