Analog Devices Inc./Maxim Integrated MAX16161NDK300+

Overview

MAX16161NDK300+ from Analog Devices is a nanoPower single-channel supply supervisor IC designed for ultra-low-power systems. It monitors VCC (1.7V–5.5V), asserts an active-low open-drain reset when voltage falls below 3.00V threshold, guarantees glitch-free power-up/down by holding RST asserted down to 0V VCC, and provides 50ms reset timeout (typ). It features manual reset (MR) input with active-low polarity and operates across –40°C to +125°C - used in battery-powered microcontroller power sequencing.

For engineers reviewing the MAX16161NDK300+ datasheet, MAX16161NDK300+ pinout, MAX16161NDK300+ application, or MAX16161NDK300+ equivalent, key selection criteria include guaranteed low-voltage reset assertion, 825nA quiescent current (typ), 3.00V factory-set threshold, 50ms timeout option, and compatibility with 4-bump WLP packaging for space-constrained portable designs.

Technical Context

The MAX16161NDK300+ implements a precision bandgap-based voltage monitor with 1% threshold accuracy and 1% hysteresis, ensuring reliable brownout detection without false releases during slow VCC ramps. Its internal timer circuit enforces a fixed 50ms (typ) reset timeout after VCC rises above VTH + VHYS, independent of VCC slew rate above 10μs.

Unlike conventional supervisors, it uses a zero-VCC-capable output driver that sinks current even at 0V VCC, eliminating undefined reset states during power-up/down transients. The MR input includes integrated 20ms debounce and supports active-low triggering via internal 50kΩ pulldown - no external components required for noise immunity.

Key Specifications

Pinout & Package

MAX16161NDK300+ is housed in a 1.06mm × 0.73mm, 4-bump wafer-level package (WLP) with bottom-side solder bumps. This ultra-compact, RoHS-compliant package enables placement directly beneath BGA processors or in tight wearable PCB layouts where SOT23 is prohibitive.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar supply supervision applications.

Compared with MAX6369KA30+T and TPS3808G30DBVR, the MAX16161NDK300+ delivers 3× lower quiescent current, integrated MR debounce, and true 0V-VCC reset assurance - making it uniquely suited for long-life, space-constrained, and glitch-sensitive embedded applications.

Availability

MAX16161NDK300+ is available at Aetrix Electronics and suitable for wearable health monitors, industrial sensor nodes, and smartphone power sequencing requiring stable component supply across extended temperature and ultra-low-power conditions.

Supply support for MAX16161NDK300+ 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX16161/MAX16162 family was engineered specifically for nanoPower, glitch-immune supply supervision in battery-constrained and thermally demanding embedded systems - prioritizing zero-VCC reset integrity and sub-1μA operation.

FAQ

What is the factory-set reset threshold voltage for MAX16161NDK300+?

The MAX16161NDK300+ has a factory-trimmed reset threshold of exactly 3.00V, with ±1.5% accuracy over –40°C to +125°C. This value is laser-trimmed during production and does not require external calibration. The threshold applies to the VCC pin, which serves both as power supply and monitored voltage source. The 3.00V setting aligns with common I/O rail voltages in portable electronics, ensuring reliable detection of brownout conditions before logic corruption occurs. MAX16161NDK300+ maintains this specification without drift across its full operating temperature range.

Does MAX16161NDK300+ require an external pullup resistor on the RST pin?

Yes, MAX16161NDK300+ requires an external pullup resistor on the RST pin because it features an active-low open-drain output. A typical value is 10kΩ to 100kΩ, connected between RST and the target logic supply (e.g., 3.3V). The pullup voltage must not exceed 3.6V when VCC > 2.0V or 1.8 × VCC when VCC ≤ 2.0V to avoid excessive sink current. With a 10kΩ pullup, VOL remains ≤0.4V under 3.3V conditions, ensuring valid logic-low assertion. MAX16161NDK300+'s ability to sink current at 0V VCC makes this configuration robust against supply collapse.

How does the manual reset (MR) function work on MAX16161NDK300+?

The MR input on MAX16161NDK300+ is active-low and internally pulldown-biased with 50kΩ resistance, requiring no external components. When MR is pulled low for ≥20ms (debounce period), the RST output asserts immediately and remains asserted for the full 50ms timeout after MR returns high. This hardware debounce eliminates firmware overhead and switch-contact bounce issues. The MR pin tolerates voltages up to 6V and draws negligible current in idle state. MAX16161NDK300+'s MR implementation is fully compatible with GPIOs, pushbuttons, or logic signals - enabling field service reset or automated test-mode entry without additional circuitry.

Can MAX16161NDK300+ supervise a 0.8V core rail?

No, MAX16161NDK300+ cannot supervise a 0.8V core rail because its VCC pin serves as both supply and monitored input, with a minimum operating voltage of 1.7V and threshold range limited to 1.7V–4.85V. For sub-1.7V rails like 0.8V cores, the MAX16162 variant (e.g., MAX16162NDK080+) must be used - it separates VIN (monitored) and VCC (supply) pins, supporting VIN thresholds as low as 0.6V. MAX16161NDK300+ is optimized for I/O, memory, or peripheral rails at 3.0V and above, where its 3.00V threshold and 50ms timeout deliver precise, glitch-free supervision without design compromises.

What package type is used for MAX16161NDK300+?

MAX16161NDK300+ uses a 4-bump wafer-level package (WLP) with outline number 21-100478 and land pattern per Application Note 1891. Its dimensions are 1.06mm × 0.73mm with 0.4mm bump pitch, making it significantly smaller than SOT23 alternatives. This RoHS-compliant, bottom-terminal package enables direct placement under fine-pitch BGAs or in ultra-thin wearables where height and footprint are constrained. Thermal resistance is θJA = 104.41°C/W on a four-layer board. MAX16161NDK300+'s WLP construction supports automated reflow assembly and meets IPC/JEDEC standards for reliability in high-vibration environments.