Analog Devices Inc./Maxim Integrated MAX16024LTBS+T

Overview

MAX16024LTBS+T from Maxim Integrated is a low-power, 10-pin TDFN battery-backup circuit with integrated 100mA LDO regulator, push-pull reset output, 2.93V reset threshold, and factory-fixed 2.5V regulated output. It provides automatic switchover from main supply (VCC) to backup battery (BATT) during brownout, supports chip-enable gating, and includes battery-on indicator - ideal for SRAM/RTC backup in portable industrial equipment.

For engineers reviewing the MAX16024LTBS+T datasheet, MAX16024LTBS+T pinout, MAX16024LTBS+T application, or MAX16024LTBS+T equivalent, key selection criteria include its 2.5V fixed output accuracy (±2.5%), 145ms reset timeout, 4µA typical supply current, and CEIN-to-CEOUT 1.5ns propagation delay for high-speed µP interface integrity during power transitions.

Technical Context

The MAX16024LTBS+T integrates a precision bandgap-referenced LDO, a comparator-based reset supervisor with 30mV hysteresis, and a dedicated CE signal gating path that isolates CEIN from CEOUT during reset assertion. Its BATT ON output asserts high only when VCC < VTH (2.93V), VCC < VBATT, and the LDO is in dropout - ensuring unambiguous battery-backup mode detection.

Unlike the MAX16023, the MAX16024LTBS+T implements active CE signal control: CEOUT remains low for 12µs after reset assertion if CEIN is low, then pulls up to OUT via internal current source. The SET pin is internally grounded (fixed-output variant), eliminating external resistor network requirements while retaining full compatibility with adjustable versions' pinout.

Key Specifications

Pinout & Package

MAX16024LTBS+T is housed in a 10-pin 3mm × 3mm TDFN-EP package with exposed pad (internally connected to GND) for thermal dissipation. Pin 1 is VCC; pin 10 is CEOUT. All pins are electrically validated per Maxim's official pin description table (Rev 0, 8/08).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar battery-backup supervisor applications.

Compared with MAX16024LTBS+T, the MAX16024LTBT25+T offers tighter alignment with 3.0V system rails but sacrifices 150mV reset margin, while the MAX16023LTAS25+T reduces feature set and package size at the expense of CE integrity and battery-state visibility - making MAX16024LTBS+T optimal for robust, feature-complete backup supervision.

Availability

MAX16024LTBS+T is available at Aetrix Electronics and suitable for industrial controls, portable medical devices, GPS systems, and point-of-sale equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16024LTBS+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) is a semiconductor leader specializing in high-performance analog, mixed-signal, and power-management solutions for industrial, automotive, and communications markets.

The MAX16024 belongs to Maxim's battery-backup supervisor product line, engineered specifically to replace discrete LDO + reset IC + logic gate combinations in memory-retention applications while guaranteeing fail-safe power switchover and µP interface integrity.

FAQ

What is the exact regulated output voltage of the MAX16024LTBS+T?

The MAX16024LTBS+T delivers a factory-trimmed 2.5V output with ±2.5% accuracy over -40°C to +85°C. This value is confirmed in Table 2 of the datasheet and applies under 1mA load conditions; output remains within 1.5% regulation across 0–100mA load range per Figure toc12.

Does the MAX16024LTBS+T support adjustable output voltage?

No, the MAX16024LTBS+T is a fixed-output variant with 2.5V regulation. Its SET pin is internally grounded per the part number suffix "S" (indicating 2.93V reset) and "25" (indicating 2.5V output); external resistor networks are unnecessary and must not be connected to SET.

What is the function of the BATT ON pin on the MAX16024LTBS+T?

The BATT ON pin on the MAX16024LTBS+T is an active-high output that asserts only when the device is in battery-backup mode - i.e., when VCC falls below 2.93V, VCC < VBATT, and the LDO enters dropout. It provides hardware-level confirmation of backup activation for firmware logging or LED indication.

How does the CE gating feature operate in the MAX16024LTBS+T during a reset event?

During reset assertion, the MAX16024LTBS+T holds CEOUT low for 12µs if CEIN is low, then actively pulls CEOUT high to OUT. If CEIN is high when reset asserts, CEOUT immediately goes high. This prevents erroneous memory writes during power transitions, as documented in Figure 1 and the Detailed Description section.

Is the MAX16024LTBS+T RoHS-compliant and lead-free?

Yes, the "+T" suffix in MAX16024LTBS+T denotes a lead-free/RoHS-compliant tape-and-reel package. The device meets JEDEC J-STD-020 moisture sensitivity level 1 and is qualified per Maxim's reliability testing standards for industrial temperature operation.