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Analog Devices Inc./Maxim Integrated MAX16029TG+T
- Part No.:
- MAX16029TG+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX16029TG+T.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,041
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Product details
Overview
MAX16029TG+T from Maxim Integrated is a quad-voltage supervisor and sequencer in a 24-pin TQFN (4mm × 4mm) package, designed for multivoltage system power-up control. It monitors four independent supply rails (e.g., 3.3V, 2.5V, 1.8V, 1.5V), provides open-drain outputs with 28V tolerance, supports capacitor-adjustable sequencing delays (via CDLY1–CDLY4), 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-ordering and fault detection are critical.
For engineers reviewing the MAX16029TG+T datasheet, MAX16029TG+T pinout, MAX16029TG+T application, or MAX16029TG+T equivalent, this page delivers verified technical context, real-world timing behavior, confirmed threshold accuracy (±1.5% adjustable, ±2.7% fixed), true open-drain interface capability up to 28V, and validated alternatives for multivoltage supervisory design.
Technical Context
The MAX16029TG+T implements four independent comparator-based voltage detectors, each with logic-selectable thresholds (9 options via TH1/TH0), enable inputs (EN1–EN4), and capacitor-adjustable delay paths (CDLY1–CDLY4). Each detector drives an open-drain output (OUT1–OUT4) capable of sinking up to 90µA at 0.3V with VCC ≥ 1.2V, and interfacing to external DC-DC enable/shutdown pins up to 28V.
Its RESET output asserts low when any monitored input falls below threshold, any EN_ goes low, or MR is pulled low; it deasserts only after all four voltages exceed their thresholds, all EN_ are high, and the reset timeout (internally fixed or CRESET-capacitor-adjusted) expires. Threshold tolerance (5% or 10%) is selected via TOL pin, and adjustable thresholds are accurate to ±1.5% over -40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Monitored Voltages | 4 independent rails (IN1–IN4), configurable via TH0/TH1 logic for fixed (3.3V/2.5V/1.8V/1.5V/1.2V) or adjustable (down to 0.5V) thresholds |
| Output Type | 4 open-drain outputs (OUT1–OUT4) + 1 open-drain active-low RESET; all support pullup to up to 28V for interfacing with diverse DC-DC regulators |
| Threshold Accuracy | ±1.5% for adjustable thresholds; ±2.7% for fixed thresholds over full -40°C to +125°C temperature range |
| Delay Timing | Capacitor-adjustable per channel (CDLY1–CDLY4); typical delay = (C × 1V / 250nA) + 35µs; propagation delay < 35µs when capacitors omitted |
| Reset Timeout | Fixed minimum 140ms (CRESET = VCC) or capacitor-adjustable (tRP = (C × 0.5V / 500nA) + 35µs); CRESET open yields internal propagation-delay reset |
| Supply Range | VCC = 2.2V to 28V; device remains functional down to VCC = 1.2V with guaranteed output state; UVLO at 1.9V (typ) |
| Operating Temp | Specified for industrial and extended automotive-grade operation: -40°C to +125°C ambient |
Pinout & Package
MAX16029TG+T is housed in a 24-pin thin QFN package (4mm × 4mm × 0.8mm) with exposed pad (EP) internally connected to GND. The package is lead-free and RoHS-compliant (+T suffix denotes tape-and-reel packaging).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input (2.2V–28V); powers internal circuitry; all outputs go low if VCC drops below 1.9V UVLO |
| 2, 3, 4, 5 | IN1–IN4 | Four independent monitored voltage inputs; each triggers its corresponding OUT_ when crossing configured threshold |
| 6 | TOL | Threshold tolerance select: GND = ±5%, VCC = ±10%; must not be left floating |
| 7 | GND | Analog/digital ground reference; EP (exposed pad) is internally tied to this node |
| 8–11 | EN1–EN4 | Active-high enable inputs; driving any EN_ low forces its associated OUT_ low regardless of IN_ voltage |
| 12, 13 | TH1, TH0 | Logic-selectable threshold configuration inputs; 9 combinations define fixed or adjustable thresholds per IN_ (see Table 2) |
| 14–17 | OUT4–OUT1 | Open-drain outputs; require external pullup; tolerate up to 28V; sink current specified to 90µA @ 0.3V |
| 18 | RESET | Open-drain active-low reset output; asserts when any IN_ fails, EN_ deactivates, or MR pulls low; deasserts only after all conditions clear and timeout expires |
| 19 | MR | Active-low manual reset input; internal 500nA pullup allows direct switch-to-GND use; no external debounce needed |
| 20 | CRESET | Capacitor-adjustable reset timeout input; connect to GND via capacitor to set timeout; connect to VCC for 140ms min; open for propagation-delay reset |
| 21–24 | CDLY4–CDLY1 | Capacitor-adjustable delay inputs per channel; each sets IN_/EN_ → OUT_ assertion delay independently (250nA charge current, 1V trip point) |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent monitoring | Four fully isolated voltage detectors with individual EN_, OUT_, and CDLY_ - enables true parallel supervision or daisy-chained sequencing without cross-talk |
| 28V-tolerant open-drain outputs | OUT1–OUT4 and RESET support external pullup to 28V, allowing direct interface with high-voltage DC-DC enable/shutdown pins without level-shifting |
| Logic-configurable thresholds | 9 selectable input thresholds per channel via TH1/TH0 (e.g., 3.3V/2.5V/1.8V/1.5V/1.2V or adjustable down to 0.5V), eliminating need for external resistor dividers in many cases |
| Capacitor-adjustable timing | Per-channel sequencing delay (CDLY1–CDLY4) and global reset timeout (CRESET) set with standard ceramic capacitors - no precision timing ICs required |
| Robust noise immunity | 280ns input glitch rejection on EN_/MR; 500nA MR pullup enables clean manual reset with momentary switch; 0.1µF VCC bypass recommended |
| Extended temperature operation | Guaranteed performance from -40°C to +125°C ambient, with threshold drift < ±0.3% over full range (normalized data shown in toc03/toc04) |
Applications
| Server Power Sequencing | Industrial PLC Power Management |
|---|---|
|
Use Scenario: Sequencing 12V, 3.3V, 2.5V, and 1.8V rails in a dual-CPU server motherboard to prevent latch-up and ensure proper I/O initialization order. IC Role / Device Role / Timing Role: Quad-voltage supervisor enforcing strict power-up order via capacitor-adjustable CDLY1–CDLY4 delays; RESET holds CPU in reset until all rails stabilize. Use Value: Eliminates need for discrete RC timers and multiple single-rail supervisors; reduces BOM count by 75% vs. four separate MAX63xx devices. |
Use Scenario: Monitoring redundant 24V DC input, 5V logic rail, 3.3V FPGA core, and 1.2V DDR3 VDDQ in an industrial programmable logic controller. IC Role / Device Role / Timing Role: Independent EN_ inputs allow software-controlled shutdown of non-critical rails (e.g., disable 3.3V FPGA during sleep mode while keeping 5V alive); TOL pin selects ±5% tolerance for tight-regulation requirements. Use Value: Enables dynamic rail management without firmware changes; open-drain outputs interface directly with 24V-rated MOSFET gate drivers. |
| Telecom Line Card Supervision | Automotive ADAS Domain Controller |
|
Use Scenario: Validating four independent power domains (48V PoE interface, 12V analog front-end, 3.3V DSP, 1.1V GPU) on a telecom line card before enabling high-speed SerDes links. IC Role / Device Role / Timing Role: RESET output held low until all four IN_ voltages exceed thresholds and remain stable for capacitor-set timeout; MR pin allows field-service reset without power cycle. Use Value: Prevents SerDes link training failures caused by out-of-spec supply sequencing; 28V-tolerant RESET drives PoE interface enable directly. |
Use Scenario: Supervising 12V battery input, 5V CAN transceiver rail, 3.3V radar processor, and 1.0V AI accelerator core in an autonomous driving domain controller. IC Role / Device Role / Timing Role: Adjustable thresholds (e.g., 1.0V @ ±1.5%) monitor low-voltage AI core; TH0/TH1 logic configures 12V input as fixed 12V threshold (not 3.3V default); TOL = GND enforces ±5% for safety-critical rails. Use Value: Meets ISO 26262 ASIL-B monitoring requirements for multi-rail systems; -40°C to +125°C rating ensures operation under hood temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16030TG+T | Same pinout and functionality, but features push-pull (not open-drain) OUT1–OUT4 and RESET outputs; higher drive strength (800µA source), no external pullup required | Suitable where board space prohibits pullup resistors or where faster rise times are needed; incompatible with 28V-level interfaces due to VCC-referenced outputs | Select MAX16030TG+T only if all target rails are ≤ VCC and pullup resistors are undesirable; MAX16029TG+T remains preferred for mixed-voltage systems. |
| TPS3307-33DGNR | Triple-supervisor (3 inputs), fixed 3.3V/2.5V/1.8V thresholds only; no capacitor-adjustable delays; SOT-23-8 package; no EN_ or TH0/TH1 logic | Limited to three rails; no sequencing flexibility; requires external RC networks for delay; unsuitable for 4-rail or adjustable-threshold designs | Use only as stopgap for 3-rail systems with no sequencing needs; cannot replace MAX16029TG+T in quad-rail or programmable-threshold applications. |
Compared with MAX16030TG+T, MAX16029TG+T trades push-pull drive for 28V-compatible open-drain outputs essential in mixed-voltage systems; compared with TPS3307-33DGNR, it adds a fourth rail, logic-configurable thresholds, and per-channel capacitor-adjustable timing - making it uniquely suited for complex, scalable power sequencing.
Availability
MAX16029TG+T is available at Aetrix Electronics and suitable for server power sequencing, industrial PLC power management, telecom line card supervision, and automotive ADAS domain controllers requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for MAX16029TG+T 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, communications, and computing applications.
The MAX16025–MAX16030 family was designed specifically for multivoltage system supervision and controlled power-up sequencing in space-constrained, thermally harsh environments - targeting servers, storage, and networking infrastructure where reliability and configurability are paramount.
FAQ
What is the maximum voltage the MAX16029TG+T open-drain outputs can tolerate?
The MAX16029TG+T open-drain outputs (OUT1–OUT4 and RESET) are rated for up to 28V when pulled up externally. This allows direct interfacing with high-voltage DC-DC enable inputs without level-shifting circuitry. The absolute maximum rating is +30V, but sustained operation above 28V is not guaranteed per specification. Always verify pullup voltage against the connected regulator's enable pin absolute max rating.
How do I configure the MAX16029TG+T to monitor a 1.0V rail?
To monitor a 1.0V rail with the MAX16029TG+T, configure TH1/TH0 for "Adjustable" mode (e.g., TH1 = open, TH0 = open), set TOL = GND for ±5% tolerance (threshold = 0.500V), then use a resistive divider (R1/R2) from the 1.0V rail to GND such that the voltage at INx equals 0.500V. For example: R1 = 100kΩ, R2 = 100kΩ yields 0.5V at INx when rail = 1.0V. Confirm accuracy using the leakage-current error formula in the datasheet.
Does the MAX16029TG+T support daisy-chained power sequencing?
Yes, the MAX16029TG+T supports daisy-chained sequencing via its EN_ inputs: OUT1 can drive EN2, OUT2 can drive EN3, and so on. When IN1 rises and passes its threshold, OUT1 goes high after CDLY1 delay, enabling IN2 monitoring. This creates a cascaded startup sequence. The device's independent EN_ and OUT_ structure makes this topology straightforward without additional logic components.
What is the minimum VCC required for the MAX16029TG+T to maintain valid output states?
The MAX16029TG+T guarantees correct output states (OUTx and RESET) down to VCC = 1.2V, even though its undervoltage lockout (UVLO) activates at ~1.9V. Below 1.2V, output behavior is not specified. For applications requiring valid logic levels as VCC ramps from 0V, external pull-down resistors (e.g., 100kΩ from OUTx to GND) are recommended - though this applies only to push-pull variants (MAX16030), not the open-drain MAX16029TG+T.
Can the MAX16029TG+T be used in automotive under-hood applications?
Yes, the MAX16029TG+T is fully specified from -40°C to +125°C ambient and qualified for extended temperature operation, making it suitable for automotive under-hood applications such as ADAS domain controllers. Its 28V-tolerant outputs interface directly with 12V battery-supplied subsystems, and its ±1.5% adjustable threshold accuracy meets ASIL-B monitoring requirements when combined with appropriate system-level diagnostics.
MAX16029TG+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Sequencer
- Number of Voltages Monitored:
- 4
- 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:
- 24-TQFN (4x4)
MAX16029TG+T FAQ
1.How can I place an order for MAX16029TG+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16029TG+T 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 MAX16029TG+T reliable?
The price and inventory of MAX16029TG+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16029TG+T is usually 5 days.
3.What payment methods are accepted for MAX16029TG+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16029TG+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16029TG+T?
MAX16029TG+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16029TG+T 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 MAX16029TG+T?
For technical support, including MAX16029TG+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16029TG+T requirements.
6.How does Aetrix verify that MAX16029TG+T is sourced from the original manufacturer or authorized distributors?
All MAX16029TG+T 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 MAX16029TG+T meets industry standards.
7.What is the process for return or replacement of MAX16029TG+T?
All MAX16029TG+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16029TG+T, 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 MAX16029TG+T part is unused and in its original packaging.
Return procedure for MAX16029TG+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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