MAX6349VL

更新时间： 2024-10-27 05:00:07

品牌	Logo	应用领域
美信 - MAXIM		稳压器微处理器复位电路
页数	文件大小	规格书
11页	238K
描述
150mA, SOT23, Low-Dropout Linear Regulators with Internal Microprocessor Reset Circuit

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MAX6349VL 数据手册

19-1889; Rev 2; 4/01

150mA, SOT23, Low-Dropout Linear Regulators

with Internal Microprocessor Reset Circuit

General Description

Features

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.

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

Output

3.ꢀ0 Regulator Aꢁꢁuraꢁc Oꢂer tꢃe ꢄpeꢁꢅied

Operatꢅng Range

o 25µA ꢄupplc Current

o Low 18ꢀmV Dropout at 1ꢀꢀmA Load

o ꢄmall Output Capaꢁꢅtor (1µF mꢅn ꢁeramꢅꢁ or

tantalum)

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.

o Zero Reꢂerse Leakage Current

o Tꢃermal and ꢄꢃort-Cꢅrꢁuꢅt Proteꢁtꢅon

o Integrated Mꢅꢁroproꢁessor Reset Cꢅrꢁuꢅt wꢅtꢃ

1ꢀꢀms (mꢅn) Tꢅmeout

o Open-Draꢅn and Pusꢃ-Pull Reset Outputs

o Regulator ꢄꢃutdown Input (MAX6329) or Manual

Reset Input (MAX6349)

o 6-Pꢅn ꢄOT23 Paꢁkage

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.

Ordering Information

PIN-

PACKAGE

PART

TEMP. RANGE

MAX6329_ _ UT-T

MAX6349_ _ UT-T

0°C to +85°C

6 SOT23-6

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.

________________________Applications

Hand-Held Instruments

Electronic Planners

Palm Top Computers

PCMCIA Cards

Pin Configuration

USB Devices

TOP VIEW

Cellular Telephones

Cordless Telephones

Modems

GND

OUT

MAX6329/

MAX6349

SET

Selector Guide appears at end of data sheet.

(MR) SHDN

RESET/RESET

Typical Operating Circuit appears at end of data sheet.

ꢄOT23-6

( ) ARE FOR MAX6349 ONLY.

________________________________________________________________ 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.

12 3 4 5 6 7...11

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与MAX6349VL相关器件

型号	品牌	获取价格	描述	数据表
MAX6349VLUT+T	MAXIM	获取价格	Fixed/Adjustable Positive LDO Regulator, 1.62V Min, 1.98V Max, 0.75V Dropout, BICMOS, PDSO
MAX6349VLUT-T	MAXIM	获取价格	Analog IC
MAX6349VP	MAXIM	获取价格	150mA, SOT23, Low-Dropout Linear Regulators with Internal Microprocessor Reset Circuit
MAX6349VPUT+	MAXIM	获取价格	暂无描述
MAX6349VPUT+T	MAXIM	获取价格	Fixed/Adjustable Positive LDO Regulator, 1.62V Min, 1.98V Max, 0.75V Dropout, BICMOS, PDSO
MAX6349VPUT-T	MAXIM	获取价格	Analog IC
MAX6349WH	MAXIM	获取价格	150mA, SOT23, Low-Dropout Linear Regulators with Internal Microprocessor Reset Circuit
MAX6349WHUT+	MAXIM	获取价格	Fixed/Adjustable Positive LDO Regulator,
MAX6349WHUT-T	MAXIM	获取价格	Analog IC
MAX6349WL	MAXIM	获取价格	150mA, SOT23, Low-Dropout Linear Regulators with Internal Microprocessor Reset Circuit

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