Analog Devices Inc./Maxim Integrated MAX17227JANT+T

Overview

MAX17227JANT+T from Analog Devices is a nanoPower synchronous boost converter optimized for ultra-low-quiescent-current battery-powered systems. It delivers up to 500mA peak inductor current, supports 400mV–5.5V input and 2.3V–5.4V resistor-programmable output, and features True Shutdown™, automatic pass-through mode, and 350nA quiescent supply current. It enables long-life operation in wearable medical sensors and low-power IoT nodes.

For engineers reviewing the MAX17227JANT+T datasheet, MAX17227JANT+T pinout, MAX17227JANT+T application, or MAX17227JANT+T equivalent, key selection considerations include its 350nA IQ, 880mV startup voltage, adaptive on-time PFM control, 500mA peak current limit, and dual-package availability (6-bump WLP and 8-pin TDFN) with -40°C to +125°C operation.

Technical Context

The MAX17227JANT+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-achieving 95% peak efficiency and ≥89% at 500μA. Its ULPM regulation accuracy is +1.5% to +4.6%, while LPM maintains ±1% output accuracy.

It integrates cycle-by-cycle inductor current limiting (500mA), thermal shutdown (165°C trip), short-circuit protection, active discharge (225–900Ω), and True Shutdown™-where both forward and reverse current paths are fully disconnected. The RSEL pin enables single-resistor output programming across 31 voltages (2.3V–5.4V) with 100mV steps, excluding ULPM at 5.4V.

Key Specifications

Pinout & Package

MAX17227JANT+T is available in two RoHS-compliant packages: 1.58mm × 0.89mm, 6-bump WLP (3×2, 0.4mm pitch) and 2mm × 2mm, 8-pin TDFN with exposed pad. Both support -40°C to +125°C operation and require four-layer PCB layout per JEDEC JESD51-7 thermal guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61099YFFR and SPV1040TR, MAX17227JANT+T uniquely combines ultra-low IQ, resistor-programmable output, True Shutdown™ with active discharge, and automatic pass-through-making it optimal for battery longevity-critical medical and industrial edge sensors.

Availability

MAX17227JANT+T is available at Aetrix Electronics and suitable for clinical instrumentation, IoT sensor nodes, wearable health monitors, and emergency lighting systems requiring stable component supply across extended product lifecycles.

Supply support for MAX17227JANT+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 (now part of Analog Devices, Inc. following merger with Maxim Integrated) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.

The MAX17227JANT+T belongs to the MAX1722x nanoPower boost converter family, designed specifically for ultra-long-life battery applications in medical, industrial, and consumer wearables where sub-1µA quiescent current and sub-1V startup are mandatory.

FAQ

What is the minimum input voltage required for MAX17227JANT+T to start up?

The MAX17227JANT+T starts up reliably at 880mV input voltage into a ≥3kΩ load. Below this threshold, the device cannot initiate switching. At inputs between 880mV and 2.0V, it operates in current-limited mode-output voltage may not reach the target until input rises further or load decreases. This enables operation from deeply discharged primary cells.

How does the RSEL pin configure output voltage on MAX17227JANT+T?

The MAX17227JANT+T uses a single resistor from RSEL to GND to select one of 31 output voltages (2.3V–5.4V) in 100mV steps. During startup, the IC sources ~200µA for ≤1320µs to detect resistance. Total RSEL pin capacitance must stay below 2pF; Table 1 in the datasheet lists standard 1% resistor values-including 191kΩ for 3.3V and 4.99kΩ for 5.4V (which disables ULPM).

Does MAX17227JANT+T support true shutdown with zero leakage?

Yes. MAX17227JANT+T features True Shutdown™: when EN is pulled low, switching halts completely, IN and OUT are isolated by internal switches, and no forward or reverse current flows. An active discharge resistor (225–900Ω) then safely drains the output capacitor to GND-critical for system safety and reset integrity in medical devices.

What protection features are integrated into MAX17227JANT+T?

MAX17227JANT+T integrates five core protections: (1) cycle-by-cycle inductor current limit (500mA), (2) thermal shutdown (165°C trip, 150°C release), (3) output short-circuit tolerance (continuous), (4) pass-through current limit (1A), and (5) LX overvoltage clamping. All remain active even in shutdown mode-ensuring robustness in unattended deployments like remote sensors.

Can MAX17227JANT+T operate efficiently at very light loads?

Yes. MAX17227JANT+T achieves ≥89% efficiency at 500µA load and maintains 350nA quiescent current in ultra-low-power mode (ULPM). Its adaptive on-time PFM control transitions seamlessly between ULPM (for standby), LPM (for moderate loads), and HPM (for heavy loads)-delivering best-in-class efficiency across six decades of output current (0.5µA to 300mA).