Analog Devices Inc./Maxim Integrated MAX17227AATA+T

Overview

MAX17227AATA+T from Maxim Integrated is a nanoPower synchronous boost converter IC designed for ultra-low-power battery-powered systems. It delivers up to 2A peak inductor current, features True Shutdown™ with 1nA input shutdown current, operates from 400mV startup voltage, regulates output from 2.3V to 5.2V via single RSEL resistor, and achieves 96% peak efficiency - ideal for wearable audio and IoT sensor nodes requiring multi-year battery life.

For engineers reviewing the MAX17227AATA+T datasheet, MAX17227AATA+T pinout, MAX17227AATA+T application, or MAX17227AATA+T equivalent, key selection considerations include its 350nA output-referred quiescent current, cycle-by-cycle current limiting, short-circuit protection behavior, thermal shutdown threshold at 165°C, and dual-package availability (6-bump WLP and 8-pin TDFN) with validated pin mappings.

Technical Context

The MAX17227AATA+T employs an adaptive on-time pulse-frequency-modulation (PFM) control scheme that dynamically transitions between Ultra-Low-Power Mode (ULPM), Low-Power Mode (LPM), and High-Power Mode (HPM) based on load current - enabling 90% efficiency at 500μA while maintaining regulation accuracy of ±1% in LPM/HPM and +1.5% to +4.6% in ULPM. Its True Shutdown mode fully disconnects OUT from IN using proprietary synchronous rectifier control, eliminating reverse current even when VOUT is precharged or grounded.

Output voltage is set by a single resistor from RSEL to GND (2.3V–5.2V in 100mV steps; 5.4V/5.5V disable ULPM), with RSEL detection completed within 600μs and <2pF total pin capacitance required. The device integrates cycle-by-cycle inductor current limiting (2A typical), short-circuit protection (1.1A input current limit), and thermal shutdown (165°C trip, 150°C hysteresis), all operating across –40°C to +125°C junction temperature.

Key Specifications

Pinout & Package

MAX17227AATA+T is supplied in a 1.58mm × 0.89mm, 6-bump Wafer-Level Package (WLP) with 0.4mm pitch (package code N60O1+1). This ultra-compact package supports high-density PCB layouts for miniature wearables and hearing aids.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS610995YFFR and LTC3525EDC-3.3#TRMPBF, the MAX17227AATA+T uniquely combines 350nA IQ, 2A peak current, single-resistor programmability, and True Shutdown - making it optimal for next-generation wearables and long-life IoT nodes where flexibility and efficiency are co-prioritized.

Availability

MAX17227AATA+T is available at Aetrix Electronics and suitable for wearable audio systems, IoT sensor nodes, emergency lighting controls, and clinical instrumentation requiring stable component supply across extended product lifecycles.

Supply support for MAX17227AATA+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 company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, medical, and consumer applications.

The MAX17227A belongs to Maxim's nanoPower boost converter family, engineered specifically for battery-operated devices needing multi-year runtime, ultra-low IQ, and robust protection - targeting wearables, remote sensors, and portable medical instruments.

FAQ

What is the minimum input voltage required for MAX17227AATA+T to start up?

The MAX17227AATA+T starts up with as little as 880mV input voltage when loaded with ≥3kΩ. This enables operation from nearly depleted primary cells or low-voltage energy harvesters. Below 880mV, the device remains inactive; above this threshold, it begins RSEL detection and soft-start ramping. Startup behavior is load-dependent - heavier loads may require higher VIN to reach target output voltage.

How does True Shutdown™ work in MAX17227AATA+T, and what is its benefit?

True Shutdown™ in the MAX17227AATA+T fully disconnects the output from the input using integrated synchronous rectifier control - eliminating both forward conduction (via body diode) and reverse current flow. This results in just 1nA input current draw during shutdown, preserving battery capacity in storage or standby. Unlike conventional boosters, no external load switch is needed, reducing solution size and BOM cost.

Can MAX17227AATA+T regulate output voltage accurately at very light loads?

Yes - the MAX17227AATA+T maintains ±1% DC load and line regulation in Low-Power Mode (LPM) and High-Power Mode (HPM). In Ultra-Low-Power Mode (ULPM), output accuracy is +1.5% to +4.6% above target due to intentional regulation offset that improves efficiency and transient response. This trade-off is intentional and documented in the datasheet for sub-milliampere loads.

What package options are available for MAX17227AATA+T, and how do they differ?

MAX17227AATA+T is offered in two packages: a 1.58mm × 0.89mm, 6-bump WLP (N60O1+1) and a 2mm × 2mm, 8-pin TDFN (T822+3C). The WLP provides smallest footprint for space-constrained wearables; the TDFN offers easier assembly and better thermal dissipation (θJA = 85.3°C/W vs. 95.15°C/W for WLP). Both share identical pin functions but differ in pin count and layout - WLP uses 6 bumps (OUT, LX, GND, RSEL, IN, EN); TDFN adds AGND and EP.

How is output voltage programmed on MAX17227AATA+T, and what resistor tolerance is required?

Output voltage on MAX17227AATA+T is set by connecting a single resistor from RSEL to GND. Table 1 in the datasheet specifies standard 1% resistor values for 32 output voltages from 2.3V to 5.2V (e.g., 191kΩ for 3.3V). The required resistor accuracy is ±1%, and total RSEL pin capacitance must remain below 2pF to ensure correct detection within 600μs. No external feedback divider is needed.