Analog Devices Inc./Maxim Integrated MAX16152ABAD+

Overview

MAX16152ABAD+ from Analog Devices is a nanoPower supervisory circuit with integrated watchdog timer, designed for ultra-low-power microcontroller-based systems. It monitors a single supply (1.2V–5.5V), asserts an open-drain reset (RST) when VCC drops below a factory-trimmed threshold (±2.5% accuracy), and detects code execution faults via WDI input monitoring. Its 400nA typical supply current and 6-bump WLP package make it ideal for battery-powered medical sensors and portable instrumentation.

For engineers reviewing the MAX16152ABAD+ datasheet, MAX16152ABAD+ pinout, MAX16152ABAD+ application, or MAX16152ABAD+ equivalent, key selection criteria include its 16ms minimum reset timeout, 100ms nominal watchdog startup delay, 1s nominal watchdog timeout, ±2.5% VTH accuracy over –40°C to +125°C, and compatibility with manual reset-free system architectures requiring only WDI supervision.

Technical Context

The MAX16152ABAD+ implements a dual-monitoring architecture: a precision voltage reference compares VCC against a factory-set threshold (1.5V–5.0V in 100mV steps), while a digital watchdog timer clears on each valid WDI transition (low-to-high or high-to-low) within its timeout window. Reset assertion follows VCC falling below VTH, with hysteresis of 0.4% and a guaranteed 80μs response delay.

Unlike MAX16154/MAX16155 variants, the MAX16152ABAD+ lacks WD_EN and MR pins-its watchdog is always enabled, and manual reset is not supported. Its functional block includes a transition detector, voltage reference, reset timeout counter, and watchdog timer with fixed startup delay (100ms nominal) and timeout (1s nominal), all operating from the same VCC rail without external components.

Key Specifications

Pinout & Package

MAX16152ABAD+ uses a 0.86mm × 1.27mm 6-bump Wafer-Level Package (WLP), optimized for space-constrained PCB layouts in wearable and implantable medical devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16153ABAA+, MAX16152ABAD+ saves board space and eliminates MR routing complexity but forfeits field-service reset capability; compared with TPS3808G15DBVR, it adds integrated watchdog at 3× lower ICC, avoiding external component count and timing coordination overhead.

Availability

MAX16152ABAD+ is available at Aetrix Electronics and suitable for portable medical devices, smart utility meters, and industrial handheld scanners requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MAX16152ABAD+ 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+ belongs to Analog Devices' nanoPower supervisor family, engineered specifically for energy-constrained applications where sub-1μA quiescent current, small footprint, and guaranteed reset/wdog timing are non-negotiable design requirements.

FAQ

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

The MAX16152ABAD+ has a factory-trimmed reset threshold of 1.5V, with ±2.5% accuracy across –40°C to +125°C. This value is laser-trimmed during production and cannot be adjusted externally. The 1.5V threshold is confirmed in the Selector Guide and Ordering Information table, where "B" in the suffix denotes 1.5V (MAX16152BBAD+). No external resistors or configuration bits modify this setting.

Does MAX16152ABAD+ support manual reset input (MR)?

No, MAX16152ABAD+ does not include a manual reset input. Pin 5 is unused in this variant, as confirmed by the Pin Description table and Pin Configurations diagram for MAX16152. Only MAX16152/MAX16153 variants have MR; MAX16154/MAX16155 use WD_EN instead. The absence of MR simplifies PCB routing and reduces I/O count for systems relying solely on power-on and watchdog reset.

What are the exact watchdog timing parameters for MAX16152ABAD+?

MAX16152ABAD+ features a nominal watchdog startup delay of 100ms and a nominal watchdog timeout period of 1s, both factory-programmed and unchangeable. These values are specified in the Selector Guide under "WD STARTUP DELAY (NOM.)" and "WD TIMEOUT DELAY (NOM.)", with "A" indicating 100ms and "A" indicating 1s. Accuracy is ±50% over temperature and supply voltage.

Can MAX16152ABAD+ operate from a 1.2V supply?

Yes, MAX16152ABAD+ operates from 1.2V to 5.5V, as verified in the Electrical Characteristics table. At 1.2V, it maintains full functionality-including reset assertion, watchdog monitoring, and 400nA typical ICC-provided VCC remains ≥1.2V. The 1.5V reset threshold ensures valid supervision even at the lowest supply voltage, with margin for hysteresis and noise immunity.

Is MAX16152ABAD+ pin-compatible with other MAX1615x variants in WLP?

No, MAX16152ABAD+ is not pin-compatible with MAX16154/MAX16155 WLP variants. While all use 6-bump WLP, MAX16152/MAX16153 assign Pin 5 to MR, whereas MAX16154/MAX16155 assign Pin 5 to WD_EN. The Pin Description table explicitly shows "-" for MR in MAX16154/MAX16155 and "-" for WD_EN in MAX16152/MAX16153, confirming incompatible pin functions at identical bump locations.