Analog Devices Inc./Maxim Integrated MAX16005BTE+

Overview

The MAX16005BTE+ from Maxim Integrated is a low-voltage, hex-voltage microprocessor supervisor IC in a 16-pin TSSOP package, monitoring six independent supply rails (IN1–IN6) with fixed and adjustable thresholds. It provides an active-low RESET output asserting when any monitored voltage falls below its threshold or MR is pulled low, plus independent WDO and REF outputs. Designed for multivoltage ASICs and server power sequencing.

For engineers reviewing the MAX16005BTE+ datasheet, MAX16005BTE+ pinout, MAX16005BTE+ application, or MAX16005BTE+ equivalent, key selection criteria include its 1.235V ±0.035V reference accuracy, 1.6s watchdog timeout, 140ms min reset timeout, independent watchdog output (WDO), and tolerance-selectable 5%/10% threshold accuracy - all specified over –40°C to +125°C.

Technical Context

The MAX16005BTE+ implements a dual-path supervision architecture: one path drives the shared RESET output (asserted on any undervoltage or MR event), while a second path enables independent WDO assertion solely on watchdog timeout - decoupled from voltage monitoring status. Its REF output delivers a precision 1.235V bandgap reference with ≤40µA sourcing capability and <0.1% line/load regulation.

Threshold detection uses internal comparators with programmable hysteresis (0.5% of V_TH) and TOL-pin-selectable 5% or 10% tolerance. The SRT pin supports capacitor-adjustable reset timeout (140ms min to >1s), and all open-drain outputs feature 30µA internal pullups - eliminating external resistors while allowing up to 5.5V drive compatibility.

Key Specifications

Pinout & Package

Package: 16-pin TSSOP (5mm × 4.4mm), RoHS-compliant, exposed pad internally connected to GND for thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16005ATE+, the MAX16005BTE+ trades compactness for easier hand-soldering and legacy compatibility; versus TPS3808G33DBVR, it delivers full hex supervision, independent watchdog signaling, and a calibrated reference - essential for complex multivoltage systems requiring fault isolation and margin testing.

Availability

MAX16005BTE+ is available at Aetrix Electronics and suitable for storage equipment, servers, networking/telecommunication equipment, and multivoltage ASICs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16005BTE+ 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, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.

The MAX16000–MAX16007 family was engineered specifically for complex multivoltage systems - delivering scalable supervision (4/6/8 rails), integrated reference outputs, and independent watchdog signaling to simplify power sequencing and improve system reliability.

FAQ

What is the reference voltage accuracy of the MAX16005BTE+?

The MAX16005BTE+ provides a precision reference output of 1.235V with a total accuracy of ±0.035V (±2.8%) over –40°C to +125°C, including initial tolerance, line regulation (0.005%/V), and load regulation (≤10Ω for 0–40µA sourcing). This is confirmed in the Electrical Characteristics table on page 3 of the datasheet under "Reference Output Accuracy".

Does the MAX16005BTE+ support adjustable reset timeout?

Yes, the MAX16005BTE+ supports both fixed and adjustable reset timeout. Connecting the SRT pin to VCC yields a minimum 140ms timeout; connecting an external capacitor from SRT to GND adjusts the timeout using t_RP = 2.06 × 10⁶ Ω × C_SRT (F), enabling delays from ~200ms to several seconds. This is detailed in the "RESET" section of the Electrical Characteristics table.

How does the watchdog function differ between MAX16005BTE+ and MAX16001ATE+?

The MAX16005BTE+ watchdog has no startup delay and asserts only WDO on timeout, leaving RESET unaffected. In contrast, MAX16001ATE+ includes a 54s startup delay after reset and asserts RESET directly. This distinction is explicitly stated in the Pin Description section (page 11): "MAX16005: … The MAX16005 does not have a startup period."

What are the threshold configurations supported by MAX16005BTE+?

The MAX16005BTE+ variant is configured for fixed 3.3V (IN1), 1.8V (IN4), and adjustable thresholds (IN2, IN3, IN5, IN6), as defined in Table 1 (page 14) of the datasheet. Thresholds can be set to 5% or 10% tolerance via the TOL pin, and adjustable inputs monitor down to 0.4V with ±0.5% hysteresis.

Can the MAX16005BTE+ monitor more than six voltages?

No, the MAX16005BTE+ is strictly a hex-voltage supervisor with six dedicated input channels (IN1–IN6). The MAX16006/MAX16007 variants support eight inputs, but MAX16005BTE+ has no internal capability to expand beyond six - confirmed by its pinout (16-pin TSSOP with exactly six INx pins) and family description on page 1.