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

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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: Sequencers/Trackers

Part Number

Option

Interface

Number of Input Channels

Maximum Operating Voltage Range (V)

Features

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX16041

Sequence

Factory Fixed
R/C Adjustable

<6
>6

•	Enable Input

•	Reset Output

THIN QFN/16

-40 to +125

$1.19 @ 1k

MAX16042

THIN QFN/20

$1.80 @ 1k

MAX16043

THIN QFN/24

$2.69 @ 1k

See All Sequencers/Trackers (52)

Key Specifications: Supervisors (2 Monitored Voltages)

Part Number

Reset Threshold Range (V)

Active-Low Reset Output

Min. Reset Timeout Range

Watchdog Feature

Supervisor Features

Reset Thresh. Acc. (% @+25°C)

Max. I_CC (µA)

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX16041

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

15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable

No Watchdog

Adjustable Reset Input
High Voltage (>6V)
Manual Reset
Power Fail Comparator

1.5

Yes

THIN QFN/16

-40 to +125

$1.19 @ 1k

See All Supervisors (2 Monitored Voltages) (79)

Key Specifications: Supervisors (3 Monitored Voltages)

Part Number

Interface

Reset Threshold Range (V)

Active-Low Reset Output

Min. Reset Timeout Range

Watchdog Feature

Supervisor Features

Reset Thresh. Acc. (% @+25°C)

Max. I_CC (µA)

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

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

15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable

No Watchdog

Adjustable Reset Input
High Voltage (>6V)
Manual Reset
Power Fail Comparator

1.5

Yes

THIN QFN/20

-40 to +125

$1.80 @ 1k

See All Supervisors (3 Monitored Voltages) (21)

Key Specifications: Supervisors (4 Monitored Voltages)

Part Number

Interface

Reset Threshold Range (V)

Active-Low Reset Output

Min. Reset Timeout Range

Watchdog Feature

Supervisor Features

Reset Thresh. Acc. (% @+25°C)

Max. I_CC (µA)

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

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

15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable

No Watchdog

Adjustable Reset Input
High Voltage (>6V)
Manual Reset
Power Fail Comparator

1.5

Yes

THIN QFN/24

-40 to +125

$2.69 @ 1k

See All Supervisors (4 Monitored Voltages) (14)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.