MAX6469 Datasheet

IC型号：
MAX6469
PDF描述：
300mA LDO Linear Regulators with Internal Microprocessor Res...
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19-2532; Rev 2; 6/03

KIT

ATION

EVALU

BLE

AVAILA

300mA LDO Linear Regulators with

Internal Microprocessor Reset Circuit

General Description

Features

鉁?/div>

3 UCSP, 6-Pin SOT23, and 8-Pin QFN Packages

Preset +1.5V to +3.3V Output (100mV Increments)

SET Pin for Adjustable Output Voltage

75碌V

RMS

LDO Output Voltage Noise

(MAX6477鈥揗AX6484)

卤2.0% Accuracy Over Temperature

Guaranteed 300mA Output Current

Low Dropout Voltage

55mV at 150mA

114mV at 300mA

82碌A Supply Current, 0.1碌A Shutdown Current

Input Reverse Current, Thermal and Short-Circuit

Protection

Microprocessor Reset with Four Timeout Options

Push-Pull or Open-Drain

RESET

Manual Reset Input

Remote Feedback Sense

MAX6469鈥揗AX6484

The MAX6469鈥揗AX6484 are low-dropout linear regula-

tors with a fully integrated microprocessor reset circuit.

Each is available with preset output voltages from +1.5V

to +3.3V in 100mV increments and delivers up to 300mA

of load current. These devices consume only 82碌A of

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

age, and integrated reset functionality make these

devices ideal for battery-powered portable equipment.

The MAX6469鈥揗AX6484 include a reset output that indi-

cates when the regulator output drops below standard

microprocessor supply tolerances (-7.5% or -12.5% of

nominal output voltage). This eliminates the need for an

external microprocessor supervisor, while ensuring that

supply voltages and clock oscillators have stabilized

before processor activity is enabled. Push-pull and open-

drain active-low reset outputs are available, with reset

timeout periods of 2.5ms, 20ms, 150ms, or 1200ms (min).

The MAX6469/MAX6470/MAX6473鈥揗AX6478/MAX6481鈥?/div>

MAX6484 also have a shutdown feature that reduces the

supply current to 0.1碌A (typ). The MAX6471鈥揗AX6474/

MAX6479鈥揗AX6482 offer a manual reset input to assert a

microprocessor reset while the regulator output is within

specification. The MAX6475/MAX6476/MAX6483/

MAX6484 feature a remote feedback sense pin for use

with an external NPN transistor for higher-current applica-

tions. The MAX6469鈥揗AX6476 are available in 6-pin

SOT23 and 8-pin thin QFN packages. The MAX6477鈥?/div>

MAX6484 are available in a 3

脳

3 chip-scale package

(UCSP鈩?. All devices are specified for operation from

-40掳C to +85掳C.

Ordering Information

PART

MAX6469UT_

_ _D_-T

MAX6469TA_ _ _D_*

MAX6470UT_

_ _D_-T

MAX6470TA_ _ _D_*

TEMP RANGE

-40掳C to +85掳C

PIN-

PACKAGE

6 SOT23-6

8 Thin QFN

6 SOT23-6

8 Thin QFN

Applications

Hand-Held Instruments (PDAs, Palmtops)

PCMCIA Cards/USB Devices

Cellular/Cordless Telephones

CD/DVD Drives

Notebook Computers

Digital Cameras

Bluetooth Modules/Wireless LAN

*Future

product鈥攃ontact factory for availability.

Note:

The first 鈥淿 _鈥漚re placeholders for the output voltage levels

of the devices. Desired output voltages are set by the suffix found

in the Output Voltage Suffix Guide (Table 1). The third 鈥淿鈥?is a

placeholder for the reset threshold accuracy. Desired reset

threshold accuracy is set by the suffix found in the Reset

Threshold Accuracy Guide (Table 2). The 鈥淿鈥?following the D is a

placeholder for the reset timeout delay time. Desired reset timeout

delay time is set by the suffix found in the Reset Timeout Delay

Guide (Table 3). For example, the MAX6481BL30BD4-T has a

3.0V output voltage, 12.5% reset threshold tolerance, and a

1200ms (min) reset timeout delay. Sample stock is generally avail-

able on standard versions only (Table 4). Standard versions

require a minimum order increment of 2.5k units. Nonstandard

versions must be ordered in 10k-unit increments. Contact factory

for availability.

Ordering Information continued at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

Pin Configurations appear at end of data sheet.

Typical Operating Circuits appear 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鈥檚 website at www.maxim-ic.com.

MAX6469 PDF文件相关型号

MAX6470,MAX6471,MAX6471UT_ _ _D_-T,MAX6472,MAX6473,MAX6474,MAX6474TA28BD3,MAX6474TA30AD3,MAX6474TA33BD3,MAX6474UT15AD3,MAX6474UT18BD3,MAX6474UT25AD3,MAX6474UT28BD3,MAX6474UT30AD3,MAX6475,MAX6475TA15BD3,MAX6475TA18AD3,MAX6475TA25BD3,MAX6475TA28AD3,MAX6475TA30BD3,MAX6475TA33AD3,MAX6475UT_ _ _D_-T,MAX6475UT15BD3,MAX6475UT18AD3,MAX6475UT25BD3,MAX6475UT28AD3,MAX6475UT30BD3,MAX6475UT33AD3,MAX6476,MAX6476TA15BD3,MAX6476TA18AD3,MAX6476TA25BD3,MAX6476TA28AD3,MAX6476TA30BD3,MAX6476TA33AD3,MAX6476UT15BD3,MAX6476UT18AD3,MAX6476UT25BD3,MAX6476UT28AD3,MAX6476UT30BD3,MAX6476UT33AD3,MAX6477,MAX6477BL18AD3,MAX6477BL25BD3,MAX6477BL28AD3,MAX6477BL33AD3,MAX6478,MAX6478BL15BD3,MAX6478BL18AD3,MAX6478BL25BD3,MAX6478BL28AD3,MAX6478BL33AD3,MAX6479,MAX6479BL_ _ _D_-T,MAX6479BL15AD3,MAX6479BL18BD3,MAX6479BL25AD3,MAX6479BL28BD3,MAX6479BL30AD3,MAX6479BL33BD3,MAX6480,MAX6480BL15BD3,MAX6480BL18AD3,MAX6480BL25BD3,MAX6480BL28AD3,MAX6480BL33AD3,MAX6481,MAX6481BL15BD3,MAX6481BL18AD3,MAX6481BL25BD3,MAX6481BL28AD3,MAX6481BL33AD3,MAX6482,MAX6482BL15BD3,MAX6482BL18AD3,MAX6482BL25BD3,MAX6482BL28AD3,MAX6482BL33AD3,MAX6483,MAX6483BL_ _ _D_-T,MAX6483BL15BD3,MAX6483BL18AD3,MAX6483BL25BD3,MAX6483BL28AD3,MAX6483BL30BD3,MAX6483BL33AD3,MAX6484,MAX6484BL18AD3,MAX6484BL25BD3,MAX6484BL28AD3,MAX6484BL33AD3

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