MAX16055HAUB+ Datasheet MAX16055HAUB+, MAX16055AAUB+T, MAX16055AAUB+ | P1-P3

General Description

The MAX16055 precision hex voltage microprocessor

(µP) supervisory circuit monitors up to six system-sup-

ply voltages and asserts a single reset when any one

supply voltage drops below its preset threshold. The

device significantly reduces system size and compo-

nent count while improving reliability compared to multi-

ple ICs or discrete components.

A variety of factory-trimmed threshold voltages are avail-

able to accommodate different supply voltages and tol-

erance with minimal external components. The

MAX16055 includes internally fixed threshold options for

monitoring 3.3V, 3.0V, 2.5V, 1.8V, 1.5V, 1.2V, 1.1V, 1.0V,

and 0.9V supplies with -5% or -10% tolerance. The

MAX16055 is also available with one to five adjustable

threshold inputs to monitor voltages down to 0.5V.

A single active-low, open-drain output asserts when

any monitored input falls below its associated thresh-

old. The reset output features a weak internal pullup

(typically 70µA) to supply input IN1. The reset output

remains low for the reset timeout period (140ms, min)

after all voltages rise above the selected thresholds.

The reset output remains valid as long as either IN1 or

IN2 input voltage is above 1V. The MAX16055 is avail-

able in a small 10-pin µMAX

(3mm x 3mm) package.

The MAX16055 operates over the -40°C to +125°C

automotive temperature range.

Applications

Features

♦ Precision Factory-Set Reset Threshold Options

3.3V, 3.0V, 2.5V, 1.8V, 1.5V, 1.2V, 1.1V, 1.0V, and

0.9V

♦ Adjustable Voltage Threshold Monitors Down to

0.5V with 1.5% Accuracy

♦ Open-Drain RESET Output with 70µA Internal

Pullup

♦ Fixed 140ms (min) Reset Timeout Period

♦ Manual Reset Input

♦ Reset Valid for IN1 ≥ 1V or IN2 ≥ 1V

♦ Tolerance Select (5%/10%) Input

♦ Immune to Short Supply Transients

MAX16055

Ultra-Small, Hex Voltage,

Microprocessor Supervisor

________________________________________________________________

Maxim Integrated Products

1 +

GND

RESET

TOLIN4

IN3

IN2

IN1

MAX16055

μMAX

TOP VIEW

IN6IN5

Pin Configuration

Ordering Information

MAX16055

μP

RESET

10kΩ

IN2

GND

TOL

MONITORED

SUPPLIES

IN1

0.1μF

IN3

IN4

IN5

IN6

Typical Operating Circuit

19-4411; Rev 0; 1/09

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Denotes a lead(Pb)-free/RoHS-compliant package.

Insert the desired threshold option letter from the Selector

Guide into the blank to complete the part number. Contact factory

for availability.

PART TEMP RANGE

PIN-PACKAGE

MAX16055_AUB+*

-40°C to +125°C 10 µMAX

Telecommunications

High-End Printers

Desktop and Notebook

Computers

Data Storage Equipment

Networking Equipment

Industrial Equipment

Set-Top Boxes

Servers/Workstations

µMAX is a registered trademark of Maxim Integrated Products, Inc.

MAX16055

Ultra-Small, Hex Voltage,

Microprocessor Supervisor

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

IN1

= 1V to 5.5V, T

= -40°C to +125°C, unless otherwise noted. Typical values are at V

IN1

= 3.3V, T

= +25°C.) (Note 1)

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.

RESET, TOL, MR, IN_ to GND ..................................-0.3V to +6V

Input/Output Current (all pins) ............................................20mA

Continuous Power Dissipation (T

= +70°C)

10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW

Operating Temperature Range .........................-40°C to +125°C

Storage Temperature Range .............................-65°C to +150°C

Junction Temperature......................................................+150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT

Operating Voltage Range V

IN1

(Note 2) 1.0 5.5 V

IN_

= nominal input voltage (for IN2–IN6;

3.3V, 3.0V, 2.5V, 1.8V, 1.5V, 1.2V, 1.1V,

1.0V, 0.9V supplies)

25 40

IN1

= nominal input voltage (for +3.3V IN1

supply)

55 115

Input Current (Note 3) I

IN_

= 0 to 0.5V or V

ADJ

(for adjustable

thresholds)

-0.1 +0.1

µA

3.3V, TOL = GND 3.00 3.08 3.15

3.3V, TOL = V

IN1

2.85 2.93 3.00

3.0V, TOL = GND 2.70 2.78 2.85

3.0V, TOL = V

IN1

2.55 2.63 2.70

2.5V, TOL = GND 2.25 2.32 2.38

2.5V, TOL = V

IN1

2.13 2.19 2.25

1.8V, TOL = GND 1.62 1.67 1.71

1.8V, TOL = V

IN1

1.53 1.58 1.62

1.5V, TOL = GND 1.355 1.389 1.425

1.5V, TOL = V

IN1

1.283 1.316 1.350

1.2V, TOL = GND 1.084 1.112 1.140

1.2V, TOL = V

IN1

1.027 1.053 1.08

1.1V, TOL = GND 0.993 1.019 1.045

1.1V, TOL = V

IN1

0.941 0.965 0.99

1.0V, TOL = GND 0.903 0.926 0.95

1.0V, TOL = V

IN1

0.856 0.878 0.90

0.9V, TOL = GND 0.813 0.834 0.855

Threshold Voltage V

IN_

decreasing

0.9V, TOL = V

IN1

0.770 0.790 0.810

MAX16055

Ultra-Small, Hex Voltage,

Microprocessor Supervisor

_______________________________________________________________________________________ 3

Note 1: 100% production tested at T

= +25°C. Limits over temperature guaranteed by design.

Note 2: The devices are powered from IN1.

Note 3: Monitored IN1 voltage is also the device power supply.

Note 4: RESET output is guaranteed to be in the correct state for IN1 or IN2 falling down to 1V.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT

TOL = GND 0.491 0.5 0.506

Adjustable Threshold V

IN_

decreasing

TOL = V

IN1

0.465 0.472 0.479

Reset Threshold Hysteresis V

HYST

IN_

increasing relative to V

IN_

decreasing 0.3 %V

Reset Threshold Temperature

Coefficient

60 ppm/°C

IN_ to Reset Delay t

IN_

falling at 10mV/µs from (V

+ 50mV)

to (V

- 50mV)

20 µs

Reset Timeout Period t

140 200 280 ms

IN1

= 5V, I

SINK

= 2mA 0.3

IN1

= 2.5V, I

SINK

= 1.2mA 0.4

RESET Output Low (Note 4) V

IN1

= 1.0V, I

SINK

= 50µA 0.3

RESET Output High V

IN1

> 2.55V, I

SOURCE

= 6µA (min), RESET

not asserted

0.8 x

IN1

RESET Output High Source

Current

IN1

> 2.55V, RESET not asserted 70 µA

TOL Input Current TOL = V

IN1

100 nA

MR, TOL Input Voltage Low V

0.3 x

IN1

MR, TOL Input Voltage High V

0.7 x

IN1

MR Minimum Pulse Width 1µs

MR Glitch Rejection 100 ns

MR-to-RESET Delay 200 ns

MR Pullup Resistance 10 20 33 kΩ

ELECTRICAL CHARACTERISTICS (continued)

IN1

= 1V to 5.5V, T

= -40°C to +125°C, unless otherwise noted. Typical values are at V

IN1

= 3.3V, T

= +25°C.) (Note 1)

P1-P3 P4-P6 P7-P9

MAX16055HAUB+

Mfr. #:

Buy MAX16055HAUB+

Manufacturer:

Maxim Integrated

Description:

Supervisory Circuits Hex Voltage MPU Supervisor

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

MAX16055HAUB+

MAX16055HAUB+

Products related to this Datasheet