Analog Devices Inc./Maxim Integrated MAX16016LTBS+T

Overview

MAX16016LTBS+T from Maxim Integrated is a low-power microprocessor supervisory circuit that monitors VCC supply voltage, provides battery-backup switchover for SRAM/RTC retention, and gates chip-enable (CE) signals to prevent memory corruption during brownout. It features a 3.08V fixed reset threshold (T-suffix), 145ms minimum reset timeout, 1.2µA supply current, and operates from 1.53V to 5.5V. Used in GPS modules and portable equipment requiring reliable power-fail response and data integrity.

For engineers reviewing the MAX16016LTBS+T datasheet, MAX16016LTBS+T pinout, MAX16016LTBS+T application, or MAX16016LTBS+T equivalent, key selection criteria include its 10-pin TDFN package, push-pull RESET output (L-suffix), battery-freshness seal, integrated watchdog timer (1.2s timeout), and CE gating with 1.5ns propagation delay-critical for real-time memory write protection in industrial and battery-powered systems.

Technical Context

The MAX16016LTBS+T implements a dual-path power-switching architecture: when VCC falls below 3.08V and VBATT > VCC, it disconnects VCC from OUT and connects BATT to maintain backup power to SRAM or RTC. Its internal watchdog timer monitors WDI transitions and triggers reset if no edge occurs within 1.2s (typ), while the low-line comparator (LL) asserts 2.5% above the reset threshold to enable early NMI-based shutdown.

It integrates five supervisory functions in one die: reset generation with 20µs VCC-falling delay, power-fail detection (PFI threshold = 0.590V), battery status signaling (BATTON, BATTOK), manual reset debouncing (120ns MR-to-RESET delay), and CEIN/CEOUT gating with 8Ω on-resistance and 12µs hold time during reset assertion-ensuring deterministic memory access control under fault conditions.

Key Specifications

Pinout & Package

MAX16016LTBS+T uses a 10-pin 3mm × 3mm TDFN-EP package with exposed pad (EP) connected internally to GND. Thermal resistance θJA = 41°C/W enables operation at full rating up to +70°C ambient without heatsinking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16020ATEZ+, MAX16016LTBS+T offers identical core supervision but in a smaller 10-pin TDFN footprint and without diagnostic outputs; versus TPS3808G33DBVR, it delivers integrated battery switchover and CE gating-reducing system-level component count by up to 4 discrete parts.

Availability

MAX16016LTBS+T is available at Aetrix Electronics and suitable for GPS receivers, industrial PLCs, point-of-sale terminals, and portable medical monitors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX16016LTBS+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, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.

The MAX16016 series belongs to Maxim's µP supervisory product line, engineered specifically for systems requiring coordinated power monitoring, battery-backed memory retention, and hardware-enforced write protection during voltage faults.

FAQ

What is the reset threshold voltage of the MAX16016LTBS+T?

The MAX16016LTBS+T has a fixed reset threshold of 3.08V (typical), with a guaranteed range of 2.991V to 3.239V per Table 1a. This value is set by the "T" suffix in the part number and is optimized for 3.3V systems, ensuring reset assertion occurs before logic levels become unreliable.

Does the MAX16016LTBS+T support battery switchover for SRAM backup?

Yes, the MAX16016LTBS+T automatically switches OUT from VCC to BATT when VCC falls below its 3.08V reset threshold and VBATT exceeds VCC. The internal MOSFET provides low on-resistance (2.6Ω min), and BATTON goes high to signal active battery mode-enabling seamless SRAM data retention during main power loss.

How does the CE gating function work on the MAX16016LTBS+T?

The MAX16016LTBS+T does not include CEIN/CEOUT pins-those are exclusive to the MAX16020/MAX16021 variants. The MAX16016LTBS+T is a 10-pin device without CE gating capability. For CE control, engineers must select MAX16020 or MAX16021 instead.

What is the purpose of the BATTON output on the MAX16016LTBS+T?

The BATTON output on the MAX16016LTBS+T is an active-high, push-pull signal that asserts high whenever the device enters battery-backup mode (i.e., when VCC < 3.08V and VBATT > VCC). It provides a direct hardware flag to the host µP or FPGA, enabling immediate software response such as disabling non-critical peripherals or logging backup activation.

Is the MAX16016LTBS+T RoHS-compliant and lead-free?

Yes, the "+T" suffix in MAX16016LTBS+T explicitly denotes a lead(Pb)-free and RoHS-compliant package. The device uses matte-tin plating and meets JEDEC J-STD-020 reflow profile requirements, with peak soldering temperature rated at +260°C for the TDFN package.