Analog Devices Inc./Maxim Integrated MAX17227AANT+

Overview

MAX17227AANT+ from Maxim Integrated is a nanoPower synchronous boost converter optimized for ultra-low-quiescent-current battery-powered systems. It delivers up to 2A peak inductor current, regulates output at 3.3V from 1.5V input, features True Shutdown™ (1nA shutdown current), and operates across -40°C to +125°C in a 1.58mm × 0.89mm 6-bump WLP package. It is used in wearable audio and near-band IoT sensors where startup at 880mV and 350nA quiescent current into VOUT are critical.

For engineers reviewing the MAX17227AANT+ datasheet, MAX17227AANT+ pinout, MAX17227AANT+ application, or MAX17227AANT+ equivalent, key selection considerations include its adaptive on-time PFM control scheme, single-resistor programmable output (191kΩ for 3.3V), 96% peak efficiency, cycle-by-cycle current limiting, and True Shutdown's reverse-current blocking - all validated for the exact MAX17227AANT+ WLP variant.

Technical Context

The MAX17227AANT+ implements an adaptive on-time pulse-frequency-modulation (PFM) control architecture that dynamically transitions between Ultra-Low-Power Mode (ULPM), Low-Power Mode (LPM), and High-Power Mode (HPM) based on load current - enabling 350nA quiescent current at light loads while maintaining 90% efficiency at 500μA. Its ULPM regulation offset (+1.5% to +4.6%) improves transient response and reduces skip frequency.

It integrates dual MOSFETs with 95mΩ high-side and 50mΩ low-side R_DS(on), cycle-by-cycle 2A peak inductor current limiting, output short-circuit protection (1.1A input current limit), and thermal shutdown at 165°C. The RSEL pin reads a single resistor (191kΩ for 3.3V) during a 600μs detection window with <2pF capacitance requirement.

Key Specifications

Pinout & Package

MAX17227AANT+ uses a 1.58mm × 0.89mm, 0.4mm pitch, 6-bump Wafer-Level Package (WLP) with 3×2 bump arrangement. The package is RoHS-compliant and designed for compact PCB layouts in space-constrained wearables and sensors.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar nanoPower boost converter applications.

Compared with TPS61099YFFR and SPV1040TR, the MAX17227AANT+ uniquely combines single-resistor programmability, 1nA True Shutdown, and validated 3.3V performance in the WLP package - making it optimal for cost-sensitive, long-life battery systems needing design reuse across multiple output voltages.

Availability

MAX17227AANT+ is available at Aetrix Electronics and suitable for wearable audio systems, low-power IoT sensors, and clinical instrumentation requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for MAX17227AANT+ 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 demanding industrial, medical, and consumer applications.

The MAX17227A product line targets ultra-low-power battery-operated systems requiring nanoscale quiescent current, wide input voltage range, and robust protection - specifically engineered for multi-year runtime in wearables, sensors, and portable medical devices.

FAQ

What is the exact output voltage set by the MAX17227AANT+ and how is it configured?

The MAX17227AANT+ is factory-configured for a nominal 3.3V output, achieved by connecting a 191kΩ (±1%) resistor from the RSEL pin to GND. This value is specified in Table 1 of the datasheet and validated for the MAX17227AANT+ WLP variant. The output accuracy is ±1% in Low-Power Mode and +1.5% to +4.6% in Ultra-Low-Power Mode, with no external feedback divider required.

Does the MAX17227AANT+ support true load disconnect during shutdown, and what is the leakage current?

Yes, the MAX17227AANT+ implements True Shutdown™, which physically disconnects the output from the input using internal synchronous rectifier control. During shutdown (EN < 0.55V), input current draw is limited to 1nA maximum, and no reverse current flows from VOUT to VIN - even if VOUT is precharged or grounded. This behavior is confirmed for the MAX17227AANT+ WLP package in the Absolute Maximum Ratings and Pin Description sections.

What is the minimum input voltage required for the MAX17227AANT+ to start up and regulate 3.3V?

The MAX17227AANT+ can start up and begin regulation from a minimum input voltage of 880mV when loaded with ≥3kΩ, as verified in the Electrical Characteristics table (VIN_START parameter). This capability enables reliable operation from deeply discharged primary cells or low-voltage energy harvesters, and is explicitly tested and guaranteed for the MAX17227AANT+ variant under the stated test conditions (IN = 1.5V, OUT = 3.3V, TA = +25°C).

How does the MAX17227AANT+ achieve 350nA quiescent current, and where is this current measured?

The MAX17227AANT+ achieves 350nA typical quiescent supply current measured *into the VOUT pin* while regulating - meaning it draws negligible current from the output rail itself, not the input. This is enabled by its adaptive PFM control and ultra-low-leakage internal circuitry. The value is specified in the Electrical Characteristics table (IQ_OUT parameter) and confirmed for the MAX17227AANT+ under standard test conditions (VIN = 1.5V, RSEL = 191kΩ, VOUT = 3.3V, TJ = +25°C).

What package type and dimensions does the MAX17227AANT+ use, and is pinout compatible with other MAX17227A variants?

The MAX17227AANT+ uses a 1.58mm × 0.89mm, 0.4mm pitch, 6-bump Wafer-Level Package (WLP) with 3×2 bump layout (package code N60O1+1). Its pinout (OUT, LX, GND, RSEL, IN, EN) is identical to other WLP variants but differs from the 8-pin TDFN version (MAX17227AATP+). The WLP pin configuration is documented in the "Pin Configurations" section and validated for the MAX17227AANT+ ordering code.