Analog Devices Inc./Maxim Integrated MAX17570DATA+T

Overview

MAX17570DATA+T from Analog Devices is a 4.5V–60V input, 300mA synchronous step-down DC-DC converter with integrated high-side pMOS and low-side nMOS FETs, fixed 3.3V output (per MAX17570A/D variants), 95.8% peak efficiency at 15V_IN/12V_OUT/150mA, and -40°C to +125°C ambient operation. It delivers regulated power in space-constrained industrial point-of-load and factory automation systems.

For engineers reviewing the MAX17570DATA+T datasheet, MAX17570DATA+T pinout, MAX17570DATA+T application, or MAX17570DATA+T equivalent, key selection criteria include its 2mm × 2mm TDFN package, internal compensation, programmable EN/UVLO threshold (1.215V typ), open-drain RESET output with 95% rising/92% falling thresholds, and PFM/PWM mode flexibility across load conditions.

Technical Context

The MAX17570DATA+T implements a current-mode control architecture with internal slope compensation, cycle-by-cycle peak current limiting (0.56A typ), and hiccup-mode fault recovery (32768-cycle timeout). Its integrated 5V LDO (VCC) powers internal circuitry with 4.75V–5.25V regulation and 13–50mA current limit.

It supports monotonic startup into prebiased outputs, operates with all-ceramic capacitors, and features adjustable switching frequency (200kHz–1MHz via RT/SYNC resistor) - though SYNC functionality is disabled in PFM variants like MAX17570D/E/F, which this part belongs to per ordering code suffix "DATA+T" indicating fixed 3.3V output and PFM light-load operation.

Key Specifications

Pinout & Package

MAX17570DATA+T is housed in an 8-pin, 2mm × 2mm TDFN package with exposed thermal pad (package code T822C+6C), optimized for high-power-density PCB layouts and thermal dissipation (θ_JA = 162°C/W on 4-layer board).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down DC-DC converter applications.

Compared with LM5165QPWPRQ1 and TPS54202HDDCR, MAX17570DATA+T uniquely combines 60V input tolerance, 300mA output, integrated 5V VCC LDO, hiccup-mode protection, and open-drain RESET in a 2mm × 2mm footprint - making it optimal for space- and reliability-critical 3.3V point-of-load designs where full 48V compatibility and robust fault handling are required.

Availability

MAX17570DATA+T is available at Aetrix Electronics and suitable for factory automation sensors, aftermarket asset trackers, and industrial IoT edge nodes requiring stable component supply across extended product lifecycles.

Supply support for MAX17570DATA+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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX17570DATA+T belongs to Analog Devices' high-voltage synchronous buck converter product line, designed specifically for reliable, compact, and efficient power conversion in harsh industrial and transportation environments.

FAQ

What output voltage does the MAX17570DATA+T deliver?

The MAX17570DATA+T delivers a fixed 3.3V output with ±1.5% regulation over temperature and line/load conditions. This is confirmed by its "DATA" ordering suffix, which maps to the MAX17570D variant per Analog Devices' datasheet Table 1. The VOUT/FB pin is internally connected to set this value, eliminating external feedback resistors and reducing solution size.

Does the MAX17570DATA+T support external clock synchronization?

No, the MAX17570DATA+T does not support external clock synchronization. As a PFM-mode variant (MAX17570D), its RT/SYNC pin functions only as a timing resistor input - the SYNC feature is explicitly disabled per the datasheet's "Switching Frequency and Clock Synchronization" section. Attempting to apply an external clock will not alter switching behavior.

What is the maximum junction temperature and thermal protection behavior of the MAX17570DATA+T?

The MAX17570DATA+T activates thermal shutdown at 166°C junction temperature and includes 20°C hysteresis. When triggered, internal power MOSFETs turn off completely, allowing the die to cool before automatic restart. This protects against sustained overload or poor PCB thermal design and is validated across the full -40°C to +125°C ambient operating range specified for the device.

How does the MAX17570DATA+T handle startup into a prebiased output?

The MAX17570DATA+T supports monotonic startup into a prebiased output without discharging the output capacitor. Its control architecture prevents reverse current flow during soft-start, enabling safe power sequencing in multi-rail systems such as those with FPGAs or processors requiring staggered voltage ramp-up. This behavior is guaranteed across all operating conditions per the datasheet's "Startup into a Prebiased Output" section.

What protection features are integrated into the MAX17570DATA+T?

The MAX17570DATA+T integrates cycle-by-cycle peak current limiting (0.56A typ), runaway current limiting (0.66A typ), hiccup-mode fault recovery (32768-cycle timeout), open-drain RESET output with 95%/92% thresholds, thermal shutdown (166°C), and programmable EN/UVLO. These features eliminate the need for external supervision ICs in industrial applications where reliability under fault conditions is critical.