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Analog Devices Inc./Maxim Integrated MAX16026TE+
- Part No.:
- MAX16026TE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX16026TE+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,098
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Product details
Overview
MAX16026TE+ from Maxim Integrated is a dual-voltage supervisor IC with push-pull outputs, designed for precise power-up sequencing and monitoring in multivoltage systems. It monitors two independent supply rails (e.g., 3.3V and 2.5V), provides capacitor-adjustable delay timing (35µs to >1s), features ±1.5% adjustable threshold accuracy down to 0.5V, and operates across -40°C to +125°C in a 4mm × 4mm TQFN-16 package - used in server power management and industrial DC-DC control.
For engineers reviewing the MAX16026TE+ datasheet, MAX16026TE+ pinout, MAX16026TE+ application, or MAX16026TE+ equivalent, this page delivers verified technical context, real-world sequencing use cases, validated alternatives, and supply-chain support for high-reliability embedded designs requiring dual-rail supervision with push-pull reset assertion.
Technical Context
The MAX16026TE+ implements two independent comparator-based voltage monitors with logic-selectable thresholds (9 options via TH1/TH0), each with dedicated enable (EN1/EN2) and capacitor-adjustable delay (CDLY1/CDLY2). Its push-pull outputs drive DC-DC enable inputs directly without external pullups, while the active-low push-pull RESET output deasserts only after both monitored voltages exceed their thresholds and remain stable for the timeout period.
It supports fixed (140ms min) or capacitor-adjustable reset timeout via CRESET, tolerance selection (5%/10%) via TOL, and operates from 2.2V to 28V VCC - enabling supervision of diverse rails including 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V domains in automotive-grade temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.2V to 28V - powers device from low-voltage logic rails up to industrial bus voltages without level-shifting. |
| Monitored Voltages | 2 independent inputs (IN1, IN2) - supports dual-rail sequencing (e.g., core + I/O supply) with separate timing control. |
| Threshold Accuracy | ±1.5% for adjustable mode (down to 0.5V); ±2.7% for fixed thresholds over -40°C to +125°C - ensures reliable trip points across temperature. |
| Output Type | Push-pull OUT1/OUT2 and push-pull active-low RESET - eliminates need for external pullup resistors, simplifies interface to enable pins of DC-DC regulators. |
| Delay Timing | Capacitor-adjustable (CDLY1/CDLY2) with 35µs propagation base - enables precise power-up sequencing intervals (e.g., 10ms–500ms) using standard ceramic capacitors. |
| Reset Timeout | Fixed 140ms min (CRESET = VCC) or capacitor-adjustable (CRESET to GND) - guarantees processor hold time after full rail stabilization. |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive, industrial control, and telecom infrastructure applications. |
Pinout & Package
MAX16026TE+ is housed in a 16-pin Thin QFN (TQFN-16) package, 4mm × 4mm × 0.8mm, with exposed pad (EP) internally connected to GND. Pin pitch is 0.5mm. RoHS-compliant and lead-free (+ suffix).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Supply input (2.2V–28V); all outputs go low if VCC drops below 1.8V UVLO; bypass with 0.1µF to GND. |
| 2 | IN1 | First monitored voltage input; threshold set by TH1/TH0/TOL; asserts OUT1 after CDLY1 delay when rising above threshold. |
| 3 | IN2 | Second monitored voltage input; independent threshold and delay (CDLY2); enables dual-rail sequencing. |
| 4 | TOL | Threshold tolerance select: GND = ±5%, VCC = ±10%; must not be left floating. |
| 5 | GND | Ground reference; connect exposed pad (EP) to PCB ground plane for thermal and electrical performance. |
| 6 | EN1 | Active-high enable for IN1/OUT1 path; drives OUT1 low when low - allows digital control of first rail monitoring. |
| 7 | EN2 | Active-high enable for IN2/OUT2 path; independent gating of second rail supervision. |
| 8 | TH1 | MSB of 2-bit threshold selector (with TH0); sets nominal voltage (e.g., 3.3V, 2.5V, 1.8V, 1.5V, 1.2V, or adjustable) for both IN1 and IN2. |
| 9 | TH0 | LSB of 2-bit threshold selector (with TH1); nine total combinations define exact trip points per Table 2 in datasheet. |
| 10 | OUT1 | Push-pull output for IN1; actively drives high/low - interfaces directly to enable input of DC-DC converter without pullup. |
| 11 | OUT2 | Push-pull output for IN2; same drive strength and logic behavior as OUT1 - supports parallel or cascaded sequencing. |
| 12 | RESET | Active-low push-pull reset output; asserts low if either IN1/IN2 falls below threshold, EN1/EN2 goes low, or MR is pulled low. |
| 13 | MR | Active-low manual reset input; internal 500nA pullup allows direct switch-to-GND connection; no debounce required. |
| 14 | CRESET | Capacitor-adjustable reset timeout input; connect to VCC for 140ms min, to GND via capacitor for custom timeout (e.g., 100nF ≈ 125ms). |
| 15 | CDLY1 | Capacitor-adjustable delay input for IN1→OUT1; 250nA current source charges external cap to 1V to trigger OUT1 assertion. |
| 16 | CDLY2 | Capacitor-adjustable delay input for IN2→OUT2; identical timing architecture to CDLY1 - enables staggered power-up of two rails. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent push-pull outputs | Eliminates external pullup resistors for OUT1/OUT2, reducing BOM count and board space in dense power domains. |
| Capacitor-adjustable sequencing delays | CDLY1/CDLY2 accept standard 100pF–10nF ceramics to set precise power-up intervals (e.g., 10ms between 3.3V and 1.2V rails). |
| Logic-selectable voltage thresholds | TH1/TH0 pins configure nine fixed or adjustable thresholds - supports mixed-voltage systems without redesigning feedback networks. |
| Adjustable reset timeout with fixed fallback | CRESET pin offers design flexibility: VCC tie gives guaranteed 140ms min timeout; capacitor option enables system-specific hold times. |
| Wide VCC operating range (2.2V–28V) | Allows single device to supervise logic rails (1.2V–3.3V) and higher intermediate buses (5V–12V) using resistor dividers on IN1/IN2. |
| Automotive-grade temperature rating | Specified from -40°C to +125°C - suitable for engine control units, base station power, and industrial PLCs without derating. |
Applications
| Server Power Sequencing | Industrial DC-DC Control |
|---|---|
|
Use Scenario: Sequencing 12V auxiliary, 3.3V I/O, and 1.2V core rails during server motherboard power-up. IC Role / Device Role / Timing Role: MAX16026TE+ monitors 12V and 3.3V rails; uses CDLY1/CDLY2 to enforce 20ms delay between them before releasing RESET to CPU. Use Value: Prevents latch-up and inrush current conflicts by ensuring proper voltage ramp order and timing margins per Intel VRD spec. |
Use Scenario: Enabling three isolated DC-DC converters in an industrial motor drive controller with fault interlock. IC Role / Device Role / Timing Role: MAX16026TE+ supervises 24V gate driver supply and 5V logic supply; EN1/EN2 allow microcontroller to disable individual rails during fault conditions. Use Value: Enables safe, software-controlled power staging and fast shutdown (<100µs) without adding discrete logic or optocouplers. |
| Telecom Line Card Supervision | Automotive ADAS Domain Controller |
|
Use Scenario: Monitoring redundant 3.3V and 1.8V supplies powering FPGA and SerDes on a 10Gbps line card. IC Role / Device Role / Timing Role: MAX16026TE+ asserts RESET if either rail dips >2.7% (TOL=GND); CDLY2 adds 5ms delay to prioritize 3.3V stability before enabling 1.8V domain. Use Value: Meets Telcordia GR-63-CORE fault response requirements with <100ms total detection-to-reset assertion. |
Use Scenario: Supervising 5V sensor supply and 3.3V MCU supply in a radar ECU operating at 125°C ambient. IC Role / Device Role / Timing Role: MAX16026TE+ uses push-pull RESET to drive safety MCU's nRESET pin directly; TH1/TH0 set 5.0V/3.3V thresholds with ±1.5% accuracy at temp. Use Value: Eliminates external level shifters and improves ASIL-B compliance by guaranteeing deterministic reset behavior under thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16025TE+ | Same pinout and function but open-drain OUT1/OUT2 and RESET - requires external pullups; lower leakage (1µA vs. 80µA ICC). | Suitable where interfacing to >5V enable inputs (e.g., 12V DC-DC) or where lower quiescent current is critical. | Select MAX16025TE+ only if open-drain flexibility and sub-100nA standby are required; MAX16026TE+ preferred for simplicity and direct 3.3V logic drive. |
| TPS3808G18DBVR | Single-supply supervisor (1.8V fixed threshold), SOT-23-6; no sequencing delay, no dual-rail capability, no TH1/TH0 configuration. | Limited to single-rail monitoring; lacks capacitor-adjustable timing and independent enable inputs. | Use TPS3808G18DBVR only for basic 1.8V rail monitoring; MAX16026TE+ is required for dual-rail coordination and programmable sequencing. |
Compared with MAX16025TE+, MAX16026TE+ simplifies layout by removing pullup resistors and improves noise immunity with push-pull drive; versus TPS3808G18DBVR, it adds essential dual-rail supervision, delay control, and logic configurability - making it the only viable choice for multivoltage sequencing.
Availability
MAX16026TE+ is available at Aetrix Electronics and suitable for server power sequencing, industrial DC-DC control, and automotive ADAS domain controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16026TE+ 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, automotive, and communications applications.
The MAX16025–MAX16030 family was designed specifically for multivoltage power-supply sequencing and supervision in space-constrained, thermally harsh environments - emphasizing configurability, precision, and reliability over wide temperature ranges.
FAQ
What is the function of the TH1 and TH0 pins on the MAX16026TE+?
The TH1 and TH0 pins on the MAX16026TE+ form a 2-bit logic-selectable threshold configuration interface. Together they define one of nine possible input voltage thresholds (e.g., 3.3V, 2.5V, 1.8V, 1.5V, 1.2V, or adjustable down to 0.5V) for both IN1 and IN2. Their states (VCC, GND, or open) determine the nominal trip point per Table 2 in the MAX16026TE+ datasheet - enabling flexible adaptation to diverse supply rails without external resistor networks.
Does the MAX16026TE+ require external pullup resistors on its outputs?
No, the MAX16026TE+ does not require external pullup resistors on OUT1, OUT2, or RESET because all three outputs are push-pull configured. Each output actively drives high or low, allowing direct connection to enable inputs of DC-DC regulators or reset pins of microcontrollers operating at the same VCC level - unlike open-drain variants such as MAX16025TE+, which mandate external pullups.
How is the reset timeout period set on the MAX16026TE+?
The reset timeout period on the MAX16026TE+ is set via the CRESET pin: connecting CRESET to VCC yields a guaranteed minimum 140ms timeout; connecting CRESET to GND through an external capacitor (e.g., 100nF) adjusts the timeout per tRP = (0.5V / 500nA) + CCRESET × 10⁶ seconds. Leaving CRESET open results in internal propagation-delay-only timing (~35µs), disabling the timeout function entirely.
Can the MAX16026TE+ monitor voltages below 1.2V?
Yes, the MAX16026TE+ can monitor voltages below 1.2V using its adjustable threshold mode. With TOL = GND, the internal reference is 0.500V (±1.5%), and with appropriate resistor dividers on IN1 or IN2, it accurately supervises rails as low as 0.5V - for example, a 1.0V supply monitored via a 1:1 divider yields 0.5V at IN1, triggering OUT1 when the rail exceeds 1.0V ±1.5%.
What is the purpose of the CDLY1 and CDLY2 pins on the MAX16026TE+?
The CDLY1 and CDLY2 pins on the MAX16026TE+ provide capacitor-adjustable delay timing between voltage detection and output assertion. Each pin sources a precise 250nA current to charge an external capacitor to 1.0V; the resulting delay (tDELAY = (1.0V / 250nA) + CCDLY × 10⁶ seconds) controls sequencing intervals - e.g., a 470pF capacitor on CDLY1 yields ~20ms delay before OUT1 goes high after IN1 exceeds its threshold.
MAX16026TE+ 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:
- Push-Pull, Totem Pole
- 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)
MAX16026TE+ FAQ
1.How can I place an order for MAX16026TE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16026TE+ 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 MAX16026TE+ reliable?
The price and inventory of MAX16026TE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16026TE+ is usually 5 days.
3.What payment methods are accepted for MAX16026TE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16026TE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16026TE+?
MAX16026TE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16026TE+ 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 MAX16026TE+?
For technical support, including MAX16026TE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16026TE+ requirements.
6.How does Aetrix verify that MAX16026TE+ is sourced from the original manufacturer or authorized distributors?
All MAX16026TE+ 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 MAX16026TE+ meets industry standards.
7.What is the process for return or replacement of MAX16026TE+?
All MAX16026TE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16026TE+, 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 MAX16026TE+ part is unused and in its original packaging.
Return procedure for MAX16026TE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX16026TE+ Tags
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MIC826SYMT-TR
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