Analog Devices Inc./Maxim Integrated MAX16030TG+

Overview

MAX16030TG+ from Maxim Integrated is a quad-voltage supervisory and sequencing IC in a 24-pin TQFN (4mm × 4mm) package, designed for multivoltage power-up control in high-reliability systems. It monitors four independent supply rails (e.g., 3.3V, 2.5V, 1.8V, 1.5V), provides push-pull outputs with ±1.5% adjustable threshold accuracy down to 0.5V, and supports capacitor-adjustable delay timing (via CDLY1–CDLY4) and reset timeout (via CRESET). It operates across -40°C to +125°C and is used in server power sequencing where deterministic voltage ramp coordination is required.

For engineers reviewing the MAX16030TG+ datasheet, MAX16030TG+ pinout, MAX16030TG+ application, or MAX16030TG+ equivalent, this page delivers verified functional identity, confirmed pin roles, temperature-stable threshold behavior, sequencing timing control via external capacitors, and direct substitution guidance - all grounded in Maxim's official datasheet Rev 3 (Jan 2007).

Technical Context

The MAX16030TG+ implements four independent comparator-based voltage detectors, each with logic-selectable thresholds (9 options via TH1/TH0), active-high enable inputs (EN1–EN4), and push-pull outputs (OUT1–OUT4). Its reset output (RESET) is active-low and deasserts only after all four monitored voltages exceed their thresholds, all enables are high, and the reset timeout expires - supporting strict power-on sequencing requirements.

Timing is controlled by internal 250nA current sources charging external capacitors on CDLY1–CDLY4 (for per-rail delays) and CRESET (for global reset timeout); threshold tolerance (5% or 10%) is selected via TOL pin, and adjustable thresholds rely on precision 0.5V reference (TOL = GND) with <±1.5% error over temperature.

Key Specifications

Pinout & Package

MAX16030TG+ uses a 24-pin thin QFN package (4mm × 4mm, 0.8mm height, exposed pad tied to GND). Pin pitch is 0.5mm; package code is T2444-4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16029TG+, the MAX16030TG+ eliminates external pullups and simplifies layout; compared with TPS3808G33DBVR, it delivers full quad-rail coordination, capacitor-timed delays, and logic-configurable thresholds - making it irreplaceable in multivoltage sequencing designs.

Availability

MAX16030TG+ is available at Aetrix Electronics and suitable for server power sequencing, industrial PLC power management, and telecom line card supervision requiring stable component supply across extended temperature and long production lifecycles.

Supply support for MAX16030TG+ 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.

The MAX160xx family was designed specifically for multivoltage system supervision and sequencing - addressing the need for accurate, flexible, and capacitor-tunable timing in space-constrained server, storage, and telecom equipment.

FAQ

What is the function of the TH0 and TH1 pins on the MAX16030TG+?

The TH0 and TH1 pins on the MAX16030TG+ are logic-selectable threshold configuration inputs that determine the nominal voltage thresholds for IN1–IN4. With nine possible combinations (e.g., TH1=Low/TH0=Low selects 3.3V/2.5V/1.8V/1.5V), they eliminate the need for external resistor dividers in standard multirail systems. Each combination maps to specific fixed thresholds or enables adjustable mode (Adj), and the selection directly affects all four monitored inputs simultaneously per the datasheet Table 2.

Does the MAX16030TG+ support adjustable reset timeout, and how is it configured?

Yes, the MAX16030TG+ supports adjustable reset timeout via the CRESET pin. Connecting an external capacitor from CRESET to GND sets the timeout period using tRP = 35µs + (0.5V / 500nA) × CCRESET - for example, a 100nF capacitor yields ~100ms. Alternatively, tying CRESET to VCC enables the fixed 140ms minimum timeout. Leaving CRESET open results in internal propagation-delay-only reset assertion, which is not recommended for robust system reset behavior.

How does the MAX16030TG+ handle undervoltage lockout (UVLO) on its VCC supply?

The MAX16030TG+ incorporates an internal undervoltage lockout circuit that forces all outputs (OUT1–OUT4 and RESET) low when VCC falls below 1.9V (typical), with 50mV hysteresis. This ensures clean, glitch-free reset assertion during brownout conditions. The device remains functional down to VCC = 1.2V, and outputs retain correct state in that range - critical for graceful shutdown in industrial power systems with slow-falling rails.

Can the MAX16030TG+ monitor voltages below 1.0V, and what is the minimum supported threshold?

Yes, the MAX16030TG+ supports adjustable thresholds down to 0.5V (with ±1.5% accuracy over temperature) when configured in adjustable mode (e.g., TH1/TH0 = Open/Open). To monitor sub-1.0V rails like 0.85V GPU cores or 0.75V AI accelerators, a precision resistive divider is used at the INx pin, referenced to the internal 0.5V (TOL = GND) or 0.472V (TOL = VCC) threshold. Input leakage (<100nA) must be accounted for in divider design to maintain accuracy.

What is the purpose of the CDLY1–CDLY4 pins on the MAX16030TG+?

The CDLY1–CDLY4 pins on the MAX16030TG+ provide per-rail, capacitor-adjustable delay timing between input voltage crossing threshold and corresponding output assertion. Each pin sources a precise 250nA current to charge an external capacitor; when the capacitor voltage reaches 1.0V, the associated OUTx goes high. This enables hardware-defined sequencing delays (e.g., 50ms between 12V and 3.3V rails) without microcontroller intervention or complex timing circuits.