GS-R400VB Maxim Integrated Products, GS-R400VB Datasheet

GS-R400VB

Manufacturer Part Number

GS-R400VB

Description

20W TO 140W STEP-DOWN SWITCHING REGULATOR FAMILY

Manufacturer

Maxim Integrated Products

Datasheet

1.FST8145SM.pdf (11 pages)

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The MAX6381–MAX6390 microprocessor (µP) supervisory

circuits monitor power supply voltages from +1.8V to

+5.0V while consuming only 3µA of supply current at

+1.8V. Whenever V

thresholds, the reset output asserts and remains assert-

ed for a minimum reset timeout period after V

above the reset threshold. Reset thresholds are available

from +1.58V to +4.63V, in approximately 100mV incre-

ments. Seven minimum reset timeout delays ranging

from 1ms to 1200ms are available.

The MAX6381/MAX6384/MAX6387 have a push-pull

active-low reset output. The MAX6382/MAX6385/

MAX6388 have a push-pull active-high reset output,

and the MAX6383/MAX6386/MAX6389/MAX6390

have an open-drain active-low reset output. The

MAX6384/MAX6385/MAX6386

debounced manual reset input (with internal pullup

resistor). The MAX6387/MAX6388/MAX6389 have an

auxiliary input for monitoring a second voltage. The

MAX6390 offers a manual reset input with a longer V

reset timeout period (1120ms or 1200ms) and a shorter

manual reset timeout (140ms or 150ms).

The MAX6381/MAX6382/MAX6383 are available in 3-pin

SC70 packages and the MAX6384–MAX6390 are avail-

able in 4-pin SC70 packages.

19-1839; Rev 1; 04/01

________________________Applications

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.

Pin Configurations continued at end of data sheet.

Computers

Controllers

Intelligent Instruments

Critical µP and µC Power Monitoring

Portable/Battery-Powered Equipment

Dual Voltage Systems

( ) IS FOR MAX6382

TOP VIEW

(RESET)

RESET

________________________________________________________________ Maxim Integrated Products

GND

falls below the factory-set reset

General Description

Pin Configurations

MAX6381

MAX6382

MAX6383

SC70

also

SC70, Single/Dual Low-Voltage,

feature

Low-Power µP Reset Circuits

rises

o Factory-Set Reset Threshold Voltages Ranging

o ±2.5% Reset Threshold Accuracy Over

o Seven Reset Timeout Periods Available: 1ms,

o 3 Reset Output Options

o Reset Output State Guaranteed Valid

o Manual Reset Input (MAX6384/MAX6385/MAX6386)

o Auxiliary RESET IN

o V

o Negative-Going V

o Low Power Consumption of 6µA at +3.6V

o Pin Compatible with

o Tiny 3-Pin SC70 and 4-Pin SC70 Packages

Note: Insert reset threshold suffix (see Reset Threshold table)

after "XR" or "XS". Insert reset timeout delay (see Reset Timeout

Delay table) after "D" to complete the part number. Sample

stock is generally 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.

*MAX6390 is available with D4 or D7 timing only.

Ordering Information continued at end of data sheet.

Typical Operating Circuit appears at end of data sheet.

Selector Guide appears at end of data sheet.

MAX6381XR_ _D_-T

MAX6382XR_ _D_-T

MAX6383XR_ _D_-T

from +1.58V to +4.63V in Approximately 100mV

Increments

Temperature (-40°C to +125°C)

20ms, 140ms, 280ms, 560ms, 1120ms,

1200ms (min)

Down to V

(MAX6387/MAX6388/MAX6389)

Reset Timeout (140ms or 150ms) (MAX6390)

and 3µA at +1.8V

MAX809/MAX810/MAX803/MAX6326/MAX6327/

MAX6328/MAX6346/MAX6347/MAX6348,

and MAX6711/MAX6712/MAX6713

Active-Low Push-Pull

Active-High Push-Pull

Active-Low Open-Drain

Reset Timeout (1120ms or 1200ms)/Manual

PART

= 1V

Ordering Information

-40°C to +125°C

TEMP. RANGE

Transient Immunity

PIN-PACKAGE

Features

3 SC70-3

Related parts for GS-R400VB

GS-R400VB Summary of contents

Page 1

... SC70 ( ) IS FOR MAX6382 Pin Configurations continued 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. SC70, Single/Dual Low-Voltage, Low-Power µP Reset Circuits o Factory-Set Reset Threshold Voltages Ranging from +1 ...

Page 2

... Output Current (All Pins) .....................................................20mA Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...

Page 3

ELECTRICAL CHARACTERISTICS (continued full range -40°C to +125°C, unless otherwise specified. Typical values are PARAMETER SYMBOL MR Minimum Input Pulse Width MR Glitch Rejection MR to Reset Delay MR Internal Pullup Resistance ...

Page 4

SC70, Single/Dual Low-Voltage, Low-Power µP Reset Circuits (T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE (NO LOAD +3. +5. +1. ...

Page 5

PIN MAX6384/ MAX6381/ MAX6386/ MAX6382 MAX6385 MAX6383 MAX6390 — 2 — 2 — 2 — — 3 — — — _______________________________________________________________________________________ SC70, Single/Dual Low-Voltage, Low-Power µP Reset Circuits NAME MAX6387/ MAX6388 MAX6389 1 1 ...

Page 6

SC70, Single/Dual Low-Voltage, Low-Power µP Reset Circuits Detailed Description A µP reset input starts the µ known state. These µP supervisory circuits assert reset to prevent code execution errors during power-up, power-down, or brownout conditions. Reset asserts when ...

Page 7

MAX6387 MAX6388 R1 MAX6389 RESET IN R2 GND Figure 1. RESET IN Configuration Reset Timeout Delay SUFFIX MAX6390XSD4 MAX6390XSD7 * The MAX6390 has a 1120ms or 1200ms RESET timeout ...

Page 8

SC70, Single/Dual Low-Voltage, Low-Power µP Reset Circuits PUSH-PULL PART NUMBER ACTIVE-LOW MAX6381 X MAX6382 MAX6383 MAX6384 X MAX6385 MAX6386 MAX6390* MAX6387 X MAX6388 MAX6389 *The MAX6390 offers a V reset timeout of 1120ms or 1200ms (min) and a manual reset ...

Page 9

Ordering Information PART TEMP. RANGE MAX6384XS_ _D_-T -40°C to +125°C MAX6385XS_ _D_-T -40°C to +125°C MAX6386XS_ _D_-T -40°C to +125°C MAX6387XS_ _D_-T -40°C to +125°C MAX6388XS_ _D_-T -40°C to +125°C MAX6389XS_ _D_-T -40°C to +125°C MAX6390XS_ _D_-T* -40°C to +125°C ...

Page 10

SC70, Single/Dual Low-Voltage, Low-Power µP Reset Circuits 10 ______________________________________________________________________________________ Package Information ...

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 © 2001 Maxim Integrated Products SC70, Single/Dual Low-Voltage, Low-Power µ ...

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