Analog Devices Inc./Maxim Integrated MAX16152ABAD+T

Overview

MAX16152ABAD+T from Analog Devices is a nanoPower supervisory circuit with integrated watchdog timer, designed to monitor single-supply voltage (1.2V–5.5V) and microcontroller code execution integrity in ultra-low-power systems. It features a factory-trimmed 1.5V reset threshold (±2.5% accuracy), 400nA typical supply current, 128ms reset timeout, and open-drain RST/WDO outputs. Used in glucose monitors and portable medical devices where battery life and fault detection are critical.

For engineers reviewing the MAX16152ABAD+T datasheet, MAX16152ABAD+T pinout, MAX16152ABAD+T application, or MAX16152ABAD+T equivalent, key selection considerations include its 6-bump WLP package, manual reset input (MR), watchdog startup delay (100ms nominal), and -40°C to +125°C operation for harsh-environment embedded systems.

Technical Context

The MAX16152ABAD+T implements a dual-monitoring architecture: a precision voltage reference compares VCC against a fixed 1.5V threshold with 0.4% hysteresis, while an independent watchdog timer clears on each valid WDI falling edge within its 128s timeout window. Reset assertion is synchronized to VCC rise/fall transitions with 80μs delay detection.

Its MR input provides active-low manual reset with 250ns propagation delay and internal 100kΩ pullup; RST and WDO outputs are open-drain, requiring external pullups. The device enters full functional operation after power-up reset deassertion, with watchdog monitoring beginning only after the 100ms startup delay completes.

Key Specifications

Pinout & Package

MAX16152ABAD+T uses a 6-bump Wafer-Level Package (WLP) with 0.4mm pitch, optimized for minimal board area and low parasitic inductance. Pin mapping follows standard analog supervisor layout for signal integrity and thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16152ABAD+T, the MAX16153ABAA+T offers identical supervision functionality in a more manufacturable package, while the TPS3808G15DBVR trades ultra-low current for broader vendor availability-neither is pin-compatible, and both require layout changes due to differing footprints and missing MR functionality.

Availability

MAX16152ABAD+T is available at Aetrix Electronics and suitable for portable medical devices, smart utility meters, and industrial IoT sensors requiring stable component supply under extended temperature and ultra-low-power constraints.

Supply support for MAX16152ABAD+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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

The MAX16152ABAD+T belongs to Analog Devices' nanoPower supervisor family, engineered specifically for battery-operated medical and metering applications demanding sub-1μA quiescent current and AEC-Q100-grade temperature resilience.

FAQ

What is the factory-set reset threshold voltage for MAX16152ABAD+T?

The MAX16152ABAD+T has a factory-trimmed reset threshold of 1.5V with ±2.5% accuracy across the full -40°C to +125°C operating range. This value is laser-trimmed during production and cannot be adjusted externally. The 1.5V threshold is confirmed in the Selector Guide and Electrical Characteristics table of the official datasheet, and applies specifically to the "B" suffix in the part number.

Does MAX16152ABAD+T include a manual reset input, and how does it behave?

Yes, MAX16152ABAD+T includes an active-low manual reset input (MR) that asserts the RST output within 250ns of being driven low. After MR is released, RST remains asserted for the full 128ms reset timeout period. MR features an internal 100kΩ pullup to VCC, allowing direct connection to a pushbutton without external components. This behavior is exclusive to MAX16152/MAX16153 variants.

What watchdog timeout period is implemented in MAX16152ABAD+T?

The MAX16152ABAD+T implements a nominal watchdog timeout period of 128 seconds, as indicated by the "D" suffix in the part number per the Selector Guide. This timeout is factory-programmed and fixed; no external components or configuration pins alter it. The watchdog timer begins counting after the 100ms startup delay completes and resets on each valid WDI falling edge.

Can MAX16152ABAD+T operate from a 1.2V supply, and what is its maximum VCC rating?

Yes, MAX16152ABAD+T operates across a 1.2V to 5.5V supply range, fully specified down to 1.2V. Its absolute maximum VCC rating is +6V, with continuous operation supported up to 5.5V. At 1.2V, all core functions-including reset assertion, watchdog timing, and MR response-remain guaranteed per the Electrical Characteristics table, making it suitable for single-cell LiFePO₄ or NiMH systems.

Is MAX16152ABAD+T pin-compatible with other members of the MAX16152–MAX16155 family?

No, MAX16152ABAD+T is not pin-compatible with SOT23-packaged variants like MAX16153 or MAX16155 due to its 6-bump WLP footprint. While the pin functions (VCC, GND, WDI, WDO, MR, RST) match the MAX16152 functional set, the physical bump layout, pitch (0.4mm), and solder mask requirements differ fundamentally from SOT23 leads. Board redesign is required for substitution.