MAX6329TPUT+T Maxim Integrated Products, MAX6329TPUT+T Datasheet

MAX6329TPUT+T

Manufacturer Part Number

MAX6329TPUT+T

Description

IC REG LDO 3.3V/ADJ SOT23-6

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX6329TLUT-T.pdf (11 pages)

Specifications of MAX6329TPUT+T

Regulator Topology

Positive Fixed or Adjustable

Voltage - Output

3.3V, 1.23 ~ 5 V

Voltage - Input

2.5 ~ 5.5 V

Voltage - Dropout (typical)

0.3V @ 150mA

Number Of Regulators

Current - Output

150mA (Min)

Operating Temperature

0°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

SOT-23-6

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Limit (min)

Current page: 1 of 11
Download datasheet (429Kb)

The MAX6329/MAX6349 are low-dropout, micropower

linear voltage regulators with integrated microproces-

sor reset circuits. Each is available with preset +3.3V,

+2.5V, +1.8V, or adjustable output voltages and can

deliver up to 150mA load current. Employing internal P-

channel MOSFET pass transistors, the devices con-

sume only 25µA supply current, independent of the

device load. The low supply current, low dropout volt-

age, and integrated reset functionality make these

devices ideal for battery powered portable equipment.

The MAX6329/MAX6349 include an internal reset circuit

that indicates when the regulator output drops below

standard microprocessor supply tolerances (-5% or

-10%). The reset output remains asserted for 100ms

(min) after the regulator output exceeds the selected

reset threshold, ensuring that supply voltages and clock

oscillators have stabilized before processor activity is

enabled. Reset outputs are available in push-pull (active-

low or -high) and open-drain (active-low) options. The

internal reset circuit replaces external microprocessor

supervisors or RC-based reset time delays.

The MAX6329/MAX6349 are optimized for use with a

1µF (min) output capacitor. The regulator output volt-

age is adjustable with an external resistor-divider net-

work at SET (reset threshold voltages track the desired

output voltage). Each device includes thermal shut-

down protection, output short-circuit protection, and

reverse leakage protection. The MAX6329 includes a

shutdown feature to reduce regulator current below

1µA (max) and the MAX6349 offers a manual reset

input to assert a microprocessor reset while the regula-

tor output is within specification.

19-1889; Rev 3; 3/04

Typical Operating Circuit appears at end of data sheet.

________________________Applications

Selector Guide appears at end of data sheet.

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.

150mA, SOT23, Low-Dropout Linear Regulators

Hand-Held Instruments

Electronic Planners

Palm Top Computers

PCMCIA Cards

USB Devices

Cellular Telephones

Cordless Telephones

Modems

with Internal Microprocessor Reset Circuit

________________________________________________________________ Maxim Integrated Products

General Description

o Preset +3.3V/+2.5V/+1.8V or Adjustable Regulator

o ±3.0% Regulator Accuracy Over the Specifed

o 25µA Supply Current

o Low 180mV Dropout at 100mA Load

o Small Output Capacitor (1µF min ceramic or

o Zero Reverse Leakage Current

o Thermal and Short-Circuit Protection

o Integrated Microprocessor Reset Circuit with

o Open-Drain and Push-Pull Reset Outputs

o Regulator Shutdown Input (MAX6329) or Manual

o 6-Pin SOT23 Package

These parts offer a choice of regulator/reset voltages and reset

outputs. From the Selector Guide, insert the desired suffix let-

ters into the blanks to complete the part number. Each device

is available in nine standard versions. Sample stock is general-

ly held on standard versions only (see Standard Versions

table). Standard versions have an order increment requirement

of 2500 pieces. Nonstandard versions have an order increment

requirement of 10,000 pieces. Contact factory for availability of

nonstandard versions.

MAX6329_ _ UT-T

MAX6349_ _ UT-T

Output

Operating Range

tantalum)

100ms (min) Timeout

Reset Input (MAX6349)

TOP VIEW

PART

( ) ARE FOR MAX6349 ONLY.

(MR) SHDN

GND

Ordering Information

TEMP RANGE

SOT23-6

0°C to +85°C

MAX6329/

MAX6349

Pin Configuration

OUT

SET

RESET/RESET

Features

6 SOT23-6

PIN-

PACKAGE

Related parts for MAX6329TPUT+T

MAX6329TPUT+T Summary of contents

Page 1

... Cordless Telephones Modems Selector Guide appears at end of data sheet. Typical Operating Circuit appears at end of data sheet. ________________________________________________________________ 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. o Preset +3.3V/+2.5V/+1.8V or Adjustable Regulator Output o ± ...

Page 2

SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit ABSOLUTE MAXIMUM RATINGS IN to GND .................................................................-0.3V to +7V SHDN to GND...........................................................-0.3V to +7V SET to GND ..............................................-0. GND ...............................................................-0.3V to +7V RESET, RESET to ...

Page 3

SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit ELECTRICAL CHARACTERISTICS (continued +3.6V -0°C to +85°C. Typical values are PARAMETER SYMBOL RESET CIRCUIT Reset Threshold (Note 2) Reset Timeout Period ...

Page 4

SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit (T = +25°C, unless otherwise noted.) A GROUND PIN CURRENT vs. INPUT VOLTAGE 150mA OUT OUT ...

Page 5

SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit (T = +25°C, unless otherwise noted.) A STARTUP RESPONSE 20µs/div LOAD TRANSIENT RESPONSE NEAR DROPOUT V I OUT 200µs/div _______________________________________________________________________________________ Typical Operating Characteristics (continued) MAX6329/49 toc10 V IN 5V/div ...

Page 6

SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit PIN NAME 1 IN Regulator Input. Supply voltage can range from +2.5V to +5.5V. Ground. This pin also functions as a heatsink. Solder to large pads or the circuit ...

Page 7

SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit IN REVERSE LEAKAGE PROTECTION SHDN 1.23V GND Figure 2. Functional Diagram 5% reset: Reset does not assert until the regulator out- put voltage is at least -5% out of ...

Page 8

SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit logic low on MR asserts reset while the regulator is still within tolerance. Reset remains asserted while MR is low and for the reset timeout period (100ms min) after ...

Page 9

SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit Capacitor Selection and Regulator Stability For stable operation over the full temperature range and with load currents up to 150mA, use a 1µF (min) output capacitor. To reduce noise ...

Page 10

SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit OUTPUT VOLTAGE PACKAGE SHDN MR INFORMATION 3.3V MAX6329TP * * MAX6329TL * * MAX6329TH * * MAX6329SP * * MAX6329SL * * MAX6329SH * * MAX6329ZP * MAX6329ZL * ...

Page 11

... 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 ____________________11 © 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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