Analog Devices Inc./Maxim Integrated MAX16016LTBR+T

Overview

MAX16016LTBR+T from Maxim Integrated is a low-power microprocessor supervisory circuit with integrated battery-backup switchover, chip-enable (CE) gating, and power-fail monitoring. It provides active-low reset output, 145ms minimum timeout, fixed 2.549V–2.755V reset threshold (suffix R), and operates from 1.53V to 5.5V supply. Used in RTC and SRAM backup systems where reliable brownout detection and memory write protection are required.

For engineers reviewing the MAX16016LTBR+T datasheet, MAX16016LTBR+T pinout, MAX16016LTBR+T application, or MAX16016LTBR+T equivalent, key selection criteria include its 10-pin TDFN package, push-pull reset output (L suffix), battery-freshness seal, 1.2µA supply current, and CEIN/CEOUT propagation delay of 1.5ns - all critical for compact, low-power µP-based systems requiring data integrity during power transitions.

Technical Context

The MAX16016LTBR+T integrates four core functions: VCC-supervised reset generation with 20µs falling-edge response; automatic VCC-to-battery switchover when VCC drops below both reset threshold and VBATT; internal CE signal gating to prevent memory corruption during brownout; and power-fail comparator with 0.590V typical PFI threshold and 30mV hysteresis.

It features a dedicated BATT input with <10nA standby leakage, BATTON indicator for battery-active state, and a debounced manual reset input with 30kΩ internal pullup. The device uses an internal reference and precision comparators to maintain ±1.5% reset threshold accuracy over –40°C to +85°C, with no external components required for basic operation.

Key Specifications

Pinout & Package

MAX16016LTBR+T is housed in a 10-pin 3mm × 3mm TDFN-EP package with exposed pad (EP) connected internally to GND. Thermal resistance θJA = 41°C/W supports operation up to +85°C ambient without forced airflow.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar supervisory circuit applications.

Compared with MAX16016LTBR+T, MAX16020ATEZ+ adds CE control and LL warning but increases board area and BOM count, while TPS3808G33DBVR reduces integration and eliminates battery-handling entirely - making MAX16016LTBR+T the optimal balance of compact size, battery-aware supervision, and memory protection for space-constrained portable systems.

Availability

MAX16016LTBR+T is available at Aetrix Electronics and suitable for real-time clock backup, industrial control panels, and portable medical monitors requiring stable component supply across extended production lifecycles.

Supply support for MAX16016LTBR+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 power, sensing, and connectivity in demanding environments.

The MAX16016 belongs to Maxim's µP supervisory product line, engineered specifically for reliable power sequencing, battery-backed memory retention, and brownout resilience in industrial, medical, and automotive-qualified systems.

FAQ

What is the reset threshold voltage range for MAX16016LTBR+T?

The MAX16016LTBR+T has a fixed reset threshold range of 2.549V (min) to 2.755V (max), corresponding to suffix R per Table 1a. This threshold is factory-trimmed and guaranteed over –40°C to +85°C, with ±1.5% typical accuracy. The value is optimized for 3.3V systems experiencing brownout, ensuring reset asserts before logic levels become unreliable. MAX16016LTBR+T does not support user-adjustable thresholds.

Does MAX16016LTBR+T support battery switchover without external MOSFETs?

Yes, MAX16016LTBR+T integrates bidirectional switchover circuitry between VCC and BATT inputs. When VCC falls below the reset threshold and VBATT exceeds VCC, the internal MOSFET automatically connects BATT to OUT. No external FETs, diodes, or control logic are needed. The device specifies <10nA BATT standby leakage and 2.6Ω typical VCC-to-OUT on-resistance, confirming full integration of the power-path switch.

Can MAX16016LTBR+T be used with 1.8V or 2.5V supply rails?

Yes, MAX16016LTBR+T operates from 1.53V to 5.5V and supports monitoring of 1.8V and 2.5V rails via appropriate reset threshold variants (e.g., suffix W for ~1.67V or Y for ~2.19V). However, the MAX16016LTBR+T specifically uses suffix R (2.63V typ), making it best suited for 3.3V systems. For 1.8V/2.5V rails, alternate suffixes like Z or S must be selected - MAX16016LTBR+T itself is not rated for direct 1.8V reset assertion.

What is the function of the BATTON pin on MAX16016LTBR+T?

The BATTON pin on MAX16016LTBR+T is an active-high indicator that asserts when the device enters battery-backup mode - i.e., when VCC falls below the reset threshold and VBATT exceeds VCC. It drives high with push-pull output, capable of sourcing ≥100µA, and remains asserted until VCC rises above 1.01×VBATT. This signal enables external circuitry to disable non-essential loads or trigger low-power states in µP-based systems.

Is MAX16016LTBR+T RoHS-compliant and lead-free?

Yes, MAX16016LTBR+T carries the "+T" suffix, which denotes a lead(Pb)-free and RoHS-compliant 10-pin TDFN-EP package per Maxim's ordering nomenclature. The exposed pad (EP) is internally connected to GND, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements. Full compliance documentation, including substance declarations, is available through Analog Devices' product page for MAX16016LTBR+T.