MAX1726EUK50+T Maxim Integrated Products, MAX1726EUK50+T Datasheet

MAX1726EUK50+T

Manufacturer Part Number

MAX1726EUK50+T

Description

IC REG LDO 5V SOT23-5

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX1725EUKT.pdf (7 pages)

Specifications of MAX1726EUK50+T

Regulator Topology

Positive Fixed

Voltage - Output

Voltage - Input

Up to 12V

Voltage - Dropout (typical)

0.3V @ 20mA

Number Of Regulators

Current - Output

20mA (Min)

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

SOT-23-5, SC-74A, SOT-25

Number Of Outputs

Polarity

Positive

Input Voltage Max

12 V

Output Voltage

5 V

Output Type

Fixed

Dropout Voltage (max)

0.6 V at 20 mA

Output Current

80 mA

Line Regulation

0.01 % / V

Load Regulation

0.015 % / mA

Voltage Regulation Accuracy

1.5 %

Maximum Power Dissipation

0.571 W

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Limit (min)

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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The MAX1725/MAX1726 are ultra-low supply current,

low-dropout linear regulators intended for low-power

applications that demand the longest possible battery

life. Unlike inferior PNP-based designs, the MAX1725/

MAX1726s’ PMOS pass elements maintain an ultra-low

2µA supply current throughout their entire operating

range and in dropout. Despite their ultra-low power

consumption, the MAX1725/MAX1726 have tight output

accuracy (1.5%) and require just 1µF output capacitance

to achieve good load-transient response.

These regulators have a wide input voltage range

(+2.5V to +12V), making them excellent choices for

systems powered from two lithium-ion (Li+) cells and 9V

batteries. Other features include reverse-battery protec-

tion, short-circuit protection, and thermal protection.

The MAX1725 provides an adjustable 1.5V to 5V output

using an external resistor-divider. The MAX1726 pro-

vides factory preset 1.8V, 2.5V, 3.3V, or 5V output volt-

ages (see the Ordering Information). Both devices are

available in a tiny 5-pin SOT23 package.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

19-1680; Rev 1; 2/03

________________________Applications

2.5V TO 12V

OFF

Smoke Detectors

Remote Transmitters

Smart Battery Packs

Industrial Control Systems

Microcontroller Power

Real-Time Clock Backup Power

PDAs and Handy-Terminals

Battery-Powered Alarms

Typical Operating Circuit

________________________________________________________________ Maxim Integrated Products

SHDN

General Description

MAX1726

GND

OUT

12V, Ultra-Low I

OUTPUT

1.5V TO 5V

o 2µA Supply Current

o Reverse-Battery Protection

o +2.5V to +12V Input Voltage Range

o Fixed 1.8V, 2.5V, 3.3V, and 5V Output Voltages

o Adjustable 1.5V to 5V Output Voltages (MAX1725)

o 20mA Guaranteed Output Current

o 1.5% Output Voltage Accuracy

o Small 1µF Output Capacitor

o Short-Circuit Protection

o Thermal Protection

o Tiny 5-Pin SOT23 Package

Note: See the Selector Guide for the MAX1725/MAX1726 output

options as they relate to the part number suffix.

Pin Configuration appears at end of data sheet.

MAX1725EUK-T

MAX1726EUK18-T

MAX1726EUK25-T

MAX1726EUK33-T

MAX1726EUK5-T

(MAX1726)

PART

MAX1726EUK18-T

MAX1726EUK25-T

MAX1726EUK33-T

MAX1726EUK50-T

MAX1725EUK-T

PART

Linear Regulators

-40°C to +85°C

TEMP RANGE

, Low-Dropout

Ordering Information

Selector Guide

OUTPUT VOLTAGE

PIN-

PACKAGE

5 SOT23-5

Adj 1.5 to 5.0

Fixed 1.8

Fixed 2.5

Fixed 3.3

Fixed 5.0

(V)

Features

MARK

ADNM

ADNO

ADNK

ADNN

ADNL

TOP

Related parts for MAX1726EUK50+T

MAX1726EUK50+T Summary of contents

Page 1

... IN 2.5V TO 12V MAX1726 ON SHDN GND OFF ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 12V, Ultra-Low I o 2µA Supply Current o Reverse-Battery Protection o +2.5V to +12V Input Voltage Range o Fixed 1.8V, 2.5V, 3.3V, and 5V Output Voltages (MAX1726) o Adjustable 1 ...

Page 2

Ultra-Low I Linear Regulators ABSOLUTE MAXIMUM RATINGS IN to GND ................................................................-14V to +14V SHDN to GND ..............................................-0. (-0. 0.3V when V OUT, FB (MAX1725 only) to GND...................-0.3V to +6V when V >5.7V; -0. ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) + 1V, SHDN = IN, I (Circuit of Figure OUT T = +25°C.) (Note 1) A PARAMETER SYMBOL OUT Line-Transient Overshoot/Undershoot OUT Load-Transient Overshoot/Undershoot OUT Noise Note 1: Limits are 100% production ...

Page 4

Ultra-Low I Linear Regulators (V = +3.3V 1mA +25°C, unless otherwise noted.) OUT OUT A DROPOUT VOLTAGE vs. LOAD CURRENT 300 T = +85°C A 250 200 T = +25°C A 150 100 T = ...

Page 5

The error amplifier compares 1.245V to the selected feedback voltage and amplifies the difference. If the feedback voltage is lower than 1.245V, the pass-tran- sistor gate is pulled lower, allowing more current to pass, and thus increasing the output voltage. ...

Page 6

Ultra-Low I Linear Regulators pass transistor shuts off, the output falls to ground, and supply current drops from 2µA to 0.7µA. Connect SHDN to IN for normal operation. If reverse-battery protection is needed, drive SHDN through a 100kΩ resistor. ...

Page 7

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________7 © 2003 Maxim Integrated Products ...

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