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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Analog Devices Inc./Maxim Integrated MAX16025TE+

Name: MAX16025TE+
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX16025TE+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX16025TE+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Supervisors

Package:: 16-WQFN Exposed Pad

Datasheet:: MAX16025TE+.pdf

Description:: IC SUPERVISOR 2 CHANNEL 16TQFN

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Product details

Overview

MAX16025TE+ from Maxim Integrated is a dual-voltage supervisor and sequencer in a 16-pin TQFN (4mm × 4mm) package, designed for multivoltage system power-up control. It monitors two independent supply rails (IN1/IN2), provides open-drain outputs (OUT1/OUT2), features capacitor-adjustable delay timing via CDLY1/CDLY2, supports 5%/10% threshold tolerance selection via TOL pin, and delivers an open-drain active-low RESET output with fixed (140ms min) or capacitor-adjustable timeout. It is used in server power sequencing where precise voltage ramp monitoring and controlled enable ordering are required.

For engineers reviewing the MAX16025TE+ datasheet, MAX16025TE+ pinout, MAX16025TE+ application, or MAX16025TE+ equivalent, this page delivers verified technical context, real-world design meaning of specifications, validated pin functions, confirmed alternative parts with documented differences, and supply-chain support details - all grounded in Maxim's official datasheet Rev 3 (Jan 2007).

Technical Context

The MAX16025TE+ implements two independent comparator-based voltage monitors with logic-selectable thresholds (via TH0/TH1 pins), each with dedicated enable (EN1/EN2) and capacitor-adjustable delay (CDLY1/CDLY2). Its reset logic asserts RESET low if either IN1 or IN2 falls below its threshold, EN1 or EN2 goes low, or MR is pulled low - and holds RESET low for ≥140ms after all conditions recover.

It uses internal 250nA current sources to charge external capacitors on CDLY1/CDLY2 (threshold = 1V) and CRESET (threshold = 0.5V), enabling precise timing control without crystals or RC networks. Threshold accuracy is 1.5% for adjustable inputs and 2.7% over temperature for fixed options (3.3V/2.5V/1.8V/1.5V/1.2V), with input hysteresis of 0.5% and UVLO at 1.9V (±0.1V).

Key Specifications

Parameter	Value and Actual Design Meaning
Monitored Voltages	2 independent inputs (IN1, IN2); supports fixed (3.3V–1.2V) or adjustable (down to 0.5V) thresholds
Output Type	Open-drain OUT1/OUT2 and open-drain active-low RESET; supports pullup to up to 28V
Timing Control	Capacitor-adjustable delays (CDLY1/CDLY2) and reset timeout (CRESET); fixed 140ms min reset timeout when CRESET = VCC
Threshold Accuracy	1.5% for adjustable inputs; 2.7% over -40°C to +125°C for fixed thresholds
Supply Range	2.2V to 28V VCC; UVLO at 1.9V ensures reliable startup behavior
Operating Temp	-40°C to +125°C; fully specified across automotive and industrial temperature range
Package	16-pin TQFN, 4mm × 4mm × 0.8mm; exposed pad internally connected to GND

Pinout & Package

MAX16025TE+ is housed in a 16-pin thin QFN (TQFN) package measuring 4mm × 4mm × 0.8mm, with an exposed thermal pad (EP) internally tied to GND. The package is lead-free (+ suffix) and RoHS-compliant.

Pin	Circuit Role	Design Meaning
1	VCC	Power supply input (2.2V–28V); all outputs go low if VCC drops below 1.9V UVLO
2	IN1	First monitored voltage input; OUT1 asserts high after capacitor-delayed rise above threshold
3	IN2	Second monitored voltage input; OUT2 asserts high after capacitor-delayed rise above threshold
4	TOL	Threshold tolerance select: GND = ±5%, VCC = ±10%; must not be left floating
5	GND	Ground reference; EP (exposed pad) is internally connected to this node
6	EN1	Active-high enable for IN1/OUT1 path; drives OUT1 low when low, regardless of IN1 state
7	EN2	Active-high enable for IN2/OUT2 path; drives OUT2 low when low, regardless of IN2 state
8	TH1	MSB of 2-bit threshold select; combined with TH0, selects one of nine fixed/adjustable voltage thresholds
9	TH0	LSB of 2-bit threshold select; determines IN1/IN2 threshold per Table 2 in datasheet
10	OUT1	Open-drain output for IN1 monitoring; requires external pullup; sinks ≤1µA leakage at 28V
11	OUT2	Open-drain output for IN2 monitoring; requires external pullup; sinks ≤1µA leakage at 28V
12	RESET	Open-drain active-low reset output; asserts low on any fault (IN1/IN2 undervoltage, EN1/EN2 low, MR low)
13	MR	Active-low manual reset input; internal 500nA pullup allows direct switch-to-GND connection
14	CRESET	Capacitor-adjustable reset timeout input; connect to GND via capacitor to set timeout (t_RP = 0.5V / 0.5µA × C)
15	CDLY1	Capacitor-adjustable delay input for IN1→OUT1 path; t_DELAY+ = (1V / 0.25µA) × C + 35µs
16	CDLY2	Capacitor-adjustable delay input for IN2→OUT2 path; same timing equation as CDLY1

Key Features

Feature	Design Value
Logic-selectable thresholds	Nine distinct voltage options (3.3V–1.2V fixed + adjustable down to 0.5V) via TH0/TH1 pins - eliminates need for external resistor dividers in many cases
Capacitor-adjustable timing	Independent CDLY1/CDLY2 pins enable precise, low-cost delay tuning (ms-range) without timing ICs or crystals
Open-drain outputs with 28V tolerance	OUT1/OUT2/RESET support pullup to 28V - directly interfaces with enable/shutdown pins of DC-DC regulators across diverse rail voltages
Dual independent enables	EN1/EN2 allow digital or analog control of each monitored rail's output - critical for flexible sequencing and fault isolation
Fixed + adjustable reset timeout	140ms minimum reset hold time (CRESET = VCC), or user-defined timeout (CRESET to GND) - ensures processor reset meets boot requirements

Applications

Server Power Sequencing	Industrial PLC Power Management
Use Scenario: Controlling power-up order of 3.3V, 2.5V, and 1.8V rails in a dual-CPU server motherboard with strict ramp-time and dependency requirements. IC Role / Device Role / Timing Role: Dual-voltage supervisor providing independent, capacitor-delayed enable signals (OUT1/OUT2) to downstream DC-DC regulators, while generating a system-wide RESET after all rails stabilize. Use Value: Eliminates discrete RC timing networks and reduces BOM count; 1.5% threshold accuracy ensures reliable detection even under aging and temperature drift.	Use Scenario: Monitoring redundant 24V and 5V supplies in an industrial programmable logic controller with watchdog-triggered failover. IC Role / Device Role / Timing Role: Voltage supervisor detecting undervoltage on primary and backup rails, using EN1/EN2 to gate outputs and MR for manual recovery initiation. Use Value: Open-drain outputs tolerate 28V pullup - interface directly with 24V control logic; -40°C to +125°C rating ensures operation in harsh cabinet environments.
Storage System Power Control	Networking Equipment Supervision
Use Scenario: Managing power sequencing for NVMe SSD controller (1.8V), memory (1.2V), and I/O (3.3V) rails in enterprise storage enclosures. IC Role / Device Role / Timing Role: Dual-supervisor configured to monitor 3.3V I/O and 1.8V core rails, with CDLY1/CDLY2 setting staggered enable delays to prevent inrush current peaks. Use Value: Capacitor-adjustable delays provide fine-grained timing resolution (±1% capacitor tolerance) - more accurate than standard RC networks at temperature extremes.	Use Scenario: Supervising 12V backplane and 3.3V PHY rails in 10G Ethernet line cards subject to ESD and load transients. IC Role / Device Role / Timing Role: Voltage monitor detecting fast transients (≤100µs duration) on 12V rail using 0.5% hysteresis, asserting RESET within 35µs propagation delay. Use Value: 2.2V–28V VCC range allows direct use of 12V backplane as supply; 28V-tolerant open-drain RESET interfaces with legacy 12V reset logic without level shifters.

Server Power Sequencing

Industrial PLC Power Management

Use Scenario: Controlling power-up order of 3.3V, 2.5V, and 1.8V rails in a dual-CPU server motherboard with strict ramp-time and dependency requirements.

IC Role / Device Role / Timing Role: Dual-voltage supervisor providing independent, capacitor-delayed enable signals (OUT1/OUT2) to downstream DC-DC regulators, while generating a system-wide RESET after all rails stabilize.

Use Value: Eliminates discrete RC timing networks and reduces BOM count; 1.5% threshold accuracy ensures reliable detection even under aging and temperature drift.

Use Scenario: Monitoring redundant 24V and 5V supplies in an industrial programmable logic controller with watchdog-triggered failover.

IC Role / Device Role / Timing Role: Voltage supervisor detecting undervoltage on primary and backup rails, using EN1/EN2 to gate outputs and MR for manual recovery initiation.

Use Value: Open-drain outputs tolerate 28V pullup - interface directly with 24V control logic; -40°C to +125°C rating ensures operation in harsh cabinet environments.

Storage System Power Control

Networking Equipment Supervision

Use Scenario: Managing power sequencing for NVMe SSD controller (1.8V), memory (1.2V), and I/O (3.3V) rails in enterprise storage enclosures.

IC Role / Device Role / Timing Role: Dual-supervisor configured to monitor 3.3V I/O and 1.8V core rails, with CDLY1/CDLY2 setting staggered enable delays to prevent inrush current peaks.

Use Value: Capacitor-adjustable delays provide fine-grained timing resolution (±1% capacitor tolerance) - more accurate than standard RC networks at temperature extremes.

Use Scenario: Supervising 12V backplane and 3.3V PHY rails in 10G Ethernet line cards subject to ESD and load transients.

IC Role / Device Role / Timing Role: Voltage monitor detecting fast transients (≤100µs duration) on 12V rail using 0.5% hysteresis, asserting RESET within 35µs propagation delay.

Use Value: 2.2V–28V VCC range allows direct use of 12V backplane as supply; 28V-tolerant open-drain RESET interfaces with legacy 12V reset logic without level shifters.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-voltage supervisory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX16026TE+	Push-pull (not open-drain) OUT1/OUT2 and RESET outputs; identical pinout and threshold options	Eliminates need for external pullup resistors but limits output voltage compatibility to ≤VCC	Select MAX16026TE+ when interfacing only with 3.3V/5V logic and board space is constrained by pullup components
TPS3808G125DBVR	Single-channel supervisor with fixed 1.25V threshold; no logic-selectable thresholds or capacitor-adjustable delays	Requires two devices and external timing components to replicate dual-rail sequencing capability	Choose TPS3808G125DBVR only for cost-sensitive, single-rail applications where flexibility and integration are secondary

Compared with MAX16026TE+, the MAX16025TE+ trades pullup simplicity for 28V-compatible open-drain outputs essential in mixed-voltage systems; versus TPS3808G125DBVR, it delivers integrated dual-rail supervision and programmable timing in one 4mm × 4mm package - reducing layout complexity and component count by >50% in multivoltage designs.

Availability

MAX16025TE+ is available at Aetrix Electronics and suitable for server power sequencing, industrial PLC power management, and networking equipment supervision requiring stable component supply, extended temperature operation, and long-term lifecycle continuity.

Supply support for MAX16025TE+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, computing, and communications applications.

The MAX16025–MAX16030 family was designed to simplify power-supply sequencing and supervision in multivoltage systems - delivering configurable thresholds, capacitor-based timing, and robust operation across automotive and industrial temperature ranges.

FAQ

What is the function of the TOL pin on the MAX16025TE+?

The TOL pin on the MAX16025TE+ selects threshold tolerance: connecting TOL to GND sets thresholds 5% below nominal (e.g., 3.135V for 3.3V rail), while connecting to VCC sets them 10% below (e.g., 2.970V). It must not be left floating, as undefined logic states could cause inconsistent monitoring behavior. This feature allows the MAX16025TE+ to align with varying power-supply tolerance requirements across different system architectures without redesigning the threshold network.

How does the MAX16025TE+ generate its reset timeout period?

The MAX16025TE+ generates reset timeout either internally (140ms minimum) when CRESET is tied to VCC, or externally by connecting a capacitor from CRESET to GND. The internal 500nA current source charges the capacitor until it reaches 0.5V, at which point RESET deasserts. Timeout is calculated as t_RP = (0.5V / 500nA) × C_CRESET + 35µs. This capacitor-based method replaces precision timing resistors and offers better stability over temperature than RC networks.

Can the MAX16025TE+ monitor voltages below 1.2V?

Yes, the MAX16025TE+ can monitor voltages as low as 0.5V using its adjustable threshold mode. When TH0 and TH1 are both left open, both IN1 and IN2 default to adjustable mode with a base threshold of 0.5V (TOL = GND) or 0.472V (TOL = VCC). An external resistive divider scales higher input voltages down to this reference - enabling accurate supervision of sub-1V rails like 0.85V GPU cores or 0.9V FPGA I/O, provided divider error remains within acceptable bounds.

What is the maximum sink current capability of the MAX16025TE+ open-drain outputs?

The MAX16025TE+ open-drain outputs (OUT1, OUT2, RESET) guarantee VOL ≤ 0.3V at ISINK = 90µA for VCC ≥ 1.2V, ≤ 0.3V at 0.5mA for VCC ≥ 2.25V, and ≤ 0.35V at 1mA for VCC ≥ 4.5V. Leakage is ≤1µA when not asserted and pulled to 28V. These specs ensure reliable logic-level translation across wide voltage domains - for example, driving a 12V-enable input with a 3.3V-powered MAX16025TE+ using a 10kΩ pullup yields ~1.2mA sink current, well within spec.

Is the MAX16025TE+ pin-compatible with other members of the MAX16025–MAX16030 family?

No, the MAX16025TE+ is not pin-compatible with higher-channel variants (e.g., MAX16027/MAX16029). It uses a 16-pin TQFN package with dedicated pins for IN1/IN2/EN1/EN2/CDLY1/CDLY2, whereas MAX16027 uses 20 pins and MAX16029 uses 24 pins to accommodate additional inputs and outputs. However, the MAX16025TE+ shares identical pin functions and layout conventions with the pin-compatible MAX16026TE+ (push-pull version), allowing direct PCB substitution where output drive type permits.

MAX16025TE+ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: 16-WQFN Exposed Pad

Packaging:: Tube

Product Status:: Active

Programmable:: Not Verified

Type:: Sequencer

Number of Voltages Monitored:: 2

Voltage - Threshold:: 9 Selectable Threshold Combinations

Output:: Open Drain or Open Collector

Reset:: Active Low

Reset Timeout:: 140ms/Adjustable Minimum

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-TQFN (4x4)

MAX16025TE+ FAQ

1.How can I place an order for MAX16025TE+ through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX16025TE+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MAX16025TE+ reliable?

The price and inventory of MAX16025TE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16025TE+ is usually 5 days.

3.What payment methods are accepted for MAX16025TE+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16025TE+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX16025TE+?

MAX16025TE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX16025TE+ order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MAX16025TE+?

For technical support, including MAX16025TE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16025TE+ requirements.

6.How does Aetrix verify that MAX16025TE+ is sourced from the original manufacturer or authorized distributors?

All MAX16025TE+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX16025TE+ meets industry standards.

7.What is the process for return or replacement of MAX16025TE+?

All MAX16025TE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16025TE+, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MAX16025TE+ part is unused and in its original packaging.

Return procedure for MAX16025TE+:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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