Analog Devices Inc./Maxim Integrated MAX16030TG+T

Overview

MAX16030TG+T from Maxim Integrated is a quad-voltage supervisory and sequencing IC with push-pull outputs, monitoring four independent supply rails (e.g., 3.3V, 2.5V, 1.8V, 1.5V) with ±1.5% adjustable threshold accuracy down to 0.5V, 140ms fixed or capacitor-adjustable reset timeout, and -40°C to +125°C operation in a 24-pin TQFN package. It enables controlled power-up sequencing in multivoltage server and storage systems.

For engineers reviewing the MAX16030TG+T datasheet, MAX16030TG+T pinout, MAX16030TG+T application, or MAX16030TG+T equivalent, this page delivers verified specifications, validated pin functions, confirmed sequencing behavior, real-world timing equations for CDLY/CRESET capacitors, and direct alternatives for multivoltage supervision where push-pull reset and independent enable control are required.

Technical Context

The MAX16030TG+T implements four independent voltage comparators with logic-selectable thresholds (9 options via TH0/TH1), each with dedicated EN_ inputs and push-pull OUT_ outputs. Its reset generation is synchronized across all monitored rails: RESET deasserts only after all IN1–IN4 exceed their thresholds, all EN_ are high, and the CRESET timeout expires.

Timing is set by internal current sources charging external capacitors: CDLY1–CDLY4 control per-rail assertion delays (250nA charge to 1V), while CRESET sets reset timeout (500nA charge to 0.5V). Threshold tolerance (5% or 10%) is selected via TOL pin, and MR provides manual reset with 500nA internal pullup.

Key Specifications

Pinout & Package

MAX16030TG+T uses a 24-pin, 4mm × 4mm × 0.8mm thin QFN package (T2444-4) with exposed pad internally connected to GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16029TG+, MAX16030TG+ eliminates external pullups and simplifies interface to 3.3V logic; compared with TPS3307-33DGNR, it adds a fourth rail, programmable thresholds, and precise capacitor-based sequencing - making it essential for complex multivoltage platforms requiring deterministic startup order.

Availability

MAX16030TG+T is available at Aetrix Electronics and suitable for server power sequencing, industrial multirail supervision, and storage controller voltage validation requiring stable component supply, long-term lifecycle support, and guaranteed automotive-grade temperature performance.

Supply support for MAX16030TG+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) designs precision analog and mixed-signal ICs for demanding industrial, computing, and communications applications.

The MAX16025–MAX16030 family targets multivoltage system supervision and sequencing, delivering configurable thresholds, capacitor-timed delays, and robust operation across extended temperature ranges for servers, storage, and networking equipment.

FAQ

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

The TH0 and TH1 pins on the MAX16030TG+T configure the voltage threshold for each monitored input (IN1–IN4) using a 3-bit logic code (including open states). They select among nine combinations - such as fixed 3.3V/2.5V/1.8V/1.5V, adjustable thresholds, or mixed configurations - enabling flexible rail assignment without external resistors. This logic selection directly determines the trip point for IN1–IN4 as defined in Table 2 of the MAX16030TG+T datasheet.

How does the MAX16030TG+T generate its reset timeout period?

The MAX16030TG+T generates reset timeout either by connecting CRESET to VCC (enabling a fixed 140ms minimum) or by connecting an external capacitor from CRESET to GND. In the latter case, an internal 500nA current source charges the capacitor to 0.5V; the timeout is calculated as t_RP = (0.5V / 500nA) × C_CRESET + 35µs. This allows precise, temperature-stable reset hold-off tailored to system boot requirements - a key capability of the MAX16030TG+T.

Can the MAX16030TG+T monitor voltages below 1.2V?

Yes, the MAX16030TG+T can monitor voltages as low as 0.5V using its adjustable threshold mode. When TH0/TH1 are configured for adjustable inputs and TOL is set to GND, the internal reference is 0.5V (±1.5%); applying a resistive divider to IN1–IN4 scales higher voltages down to this reference. The MAX16030TG+T's 1.5% accuracy and 100nA input leakage ensure reliable low-voltage detection critical for modern sub-1V ASIC cores.

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

The CDLY1–CDLY4 pins on the MAX16030TG+T set individual assertion delays for OUT1–OUT4 relative to their respective IN_ inputs. Each connects to an external capacitor to GND; an internal 250nA current source charges it to 1V, triggering the output after t_DELAY+ = (1V / 250nA) × C_CDLY + 35µs. This enables precise, per-rail sequencing - for example, delaying 1.2V core activation until 3.3V I/O is stable - a defining feature of the MAX16030TG+T.

Does the MAX16030TG+T require external pullup resistors on its outputs?

No, the MAX16030TG+T does not require external pullup resistors because it features push-pull OUT1–OUT4 and push-pull active-low RESET outputs. These outputs actively drive both high and low states, eliminating dependency on external components for logic-level translation. This simplifies design, improves noise immunity, and ensures reliable interfacing with DC-DC enable inputs - a key differentiator of the MAX16030TG+T versus open-drain alternatives like MAX16029TG+.