MAX16041, MAX16042, MAX16043 Dual-/Triple-/Quad-Voltage, Capacitor-Adjustable, Sequencing/Supervisory Circuits

Description

The MAX16041/MAX16042/MAX16043 are dual-/triple-/quad-voltage monitors and sequencers that are offered in a small thin QFN package. These devices offer enormous design flexibility as they allow fixed and adjustable thresholds to be selected through logic inputs and provide sequence timing through small external capacitors. These versatile devices are ideal for use in a wide variety of multivoltage applications.

As the voltage at each monitored input exceeds its respective threshold, its corresponding output goes high after a propagation delay or a capacitor-set time delay. When a voltage falls below its threshold, its respective output goes low after a propagation delay. Each detector circuit also includes its own enable input, allowing the power-good outputs to be shut off independently. The independent output for each detector has an open-drain configuration capable of supporting voltages up to 28V, thereby allowing them to interface to shutdown and enable inputs of various DC-DC regulators. Each detector can operate independently as four separate supervisory circuits or can be daisy-chained to provide controlled power-supply sequencing.

The MAX16041/MAX16042/MAX16043 also include a push-pull reset function that deasserts only after all of the independently monitored voltages exceed their threshold. The reset timeout is internally fixed or can be adjusted externally. These devices are offered in a 4mm x 4mm TQFN package and are fully specified from -40°C to +125°C.

Key Features

Applications/Uses

	2.2V to 28V Operating Voltage Range
	Fixed Thresholds for 3.3V, 2.5V, 1.8V, 1.5V, and 1.2V Systems
	1.5% Accurate Adjustable Threshold Monitors Voltages Down to 0.5V
	2.7% Accurate Fixed Thresholds Over Temperature
	Fixed (140ms min)/Capacitor-Adjustable Delay Timing
	Independent Open-Drain Outputs/Push-Pull RESET-bar Output
	Enable Inputs for Each Monitored Voltage
	9 Logic-Selectable Threshold Options
	Manual Reset and Tolerance Select (5%/10%) Inputs
	Small, 4mm x 4mm TQFN Package
	Fully Specified from -40°C to +125°C

	DC-DC Supplies
	Multivoltage Systems
	Networking/Telecommunication Equipment
	Servers/Workstations
	Storage Systems

Key Specifications: Power-Supply Sequencers and Voltage Trackers

Part Number

Option

Interface

Input Chan.

V_IN
(V)

Features

Industry Qualified

Package/Pins

Smallest Available Pckg.
(mm²)

Oper. Temp.
(°C)

Price

max

max w/pins

See Notes

MAX16041

Sequence

Factory Fixed

R/C Adjustable

Enable Input

Reset Output

TQFN/16

-40 to +125

$1.19 @1k

MAX16042

Automotive - General

TQFN/20

$1.80 @1k

MAX16043

Automotive - General

TQFN/24

$2.69 @1k

See All Power-Supply Sequencers and Voltage Trackers (35)

Key Specifications: Supervisors (2 Monitored Voltages)

Part Number

Interface

Reset Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Supervisor Features

Reset Thresh. Accur.
(%)

I_CC
(µA)

Price

Active Low

min

@ +25°C

max

See Notes

MAX16041

Factory Fixed

R/C Adjustable

0 to 1.2

1.2 to 1.8

1.8 to 2.5

2.5 to 3.3

3.3 to 5.5

>=5.5

Push-Pull

1ms to 15ms

15ms to 85ms

85ms to 300ms

300ms to 1s

<1ms

>1s

Adjustable

No Watchdog

Adjustable Reset Input

High Voltage (>6V)

Manual Reset

Power Fail Comparator/Low Battery Detect

1.5

$1.19 @1k

See All Supervisors (2 Monitored Voltages) (84)

Key Specifications: Supervisors (3 Monitored Voltages)

Part Number

Interface

Reset Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Supervisor Features

Reset Thresh. Accur.
(%)

I_CC
(µA)

Price

Active Low

min

@ +25°C

max

See Notes

MAX16042

Factory Fixed

R/C Adjustable

0 to 1.2

1.2 to 1.8

1.8 to 2.5

2.5 to 3.3

3.3 to 5.5

>=5.5

Push-Pull

1ms to 15ms

15ms to 85ms

85ms to 300ms

300ms to 1s

<1ms

>1s

Adjustable

No Watchdog

Adjustable Reset Input

High Voltage (>6V)

Manual Reset

Power Fail Comparator/Low Battery Detect

1.5

$1.80 @1k

See All Supervisors (3 Monitored Voltages) (32)

Key Specifications: Supervisors (4 Monitored Voltages)

Part Number

Interface

Reset Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Supervisor Features

Reset Thresh. Accur.
(%)

I_CC
(µA)

Price

Active Low

min

@ +25°C

max

See Notes

MAX16043

Factory Fixed

R/C Adjustable

0 to 1.2

1.2 to 1.8

1.8 to 2.5

2.5 to 3.3

3.3 to 5.5

>=5.5

Push-Pull

1ms to 15ms

15ms to 85ms

85ms to 300ms

300ms to 1s

<1ms

>1s

Adjustable

No Watchdog

Adjustable Reset Input

High Voltage (>6V)

Manual Reset

Power Fail Comparator/Low Battery Detect

1.5

$2.69 @1k

See All Supervisors (4 Monitored Voltages) (26)

Diagram

Simplified Functional Diagram

Design Guides

Microprocessor Supervisory (PDF)

Reliability Reports

Reliability Report: MAX16043.pdf

Show FIT data for:

Request Reliability Report for:

Software/Models

none

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-6 of 6

MAX16041 Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

MAX16041TE+T

Active

Land Pattern: Not Available

-40°C to +125°C See data sheet

MAX16041TE+

Active TQFN;16 pin;17 mm²
Outline Drawing: 21-0139 (PDF)
Land Pattern: 90-0070 (PDF)
Use pkgcode/variation: T1644+4*
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis

MAX16042 Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

MAX16042TP+T

Active

Land Pattern: Not Available

-40°C to +125°C See data sheet

MAX16042TP+

Active TQFN;20 pin;17 mm²
Outline Drawing: 21-0139 (PDF)
Land Pattern: 90-0037 (PDF)
Use pkgcode/variation: T2044+3*
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis

MAX16043 Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

MAX16043TG+T

Active

Land Pattern: Not Available

-40°C to +125°C See data sheet

MAX16043TG+

Active TQFN;24 pin;17 mm²
Outline Drawing: 21-0139 (PDF)
Land Pattern: 90-0022 (PDF)
Use pkgcode/variation: T2444+4*
-40°C to +125°C RoHS/Lead-Free: Lead Free
Materials Analysis

More Information

Topmark Coding: MAX16041 MAX16043

New Product Press Release 2006-08-18

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Document Ref.: 19-0622; Rev 0; 2006-08-11
This page last modified: 2009-09-04