Analog Devices Inc./Maxim Integrated MAX20073ATBA/V+

Overview

MAX20073ATBA/V+ from Maxim Integrated is a synchronous step-down DC-DC converter delivering up to 3A output current with 2.2MHz fixed-frequency PWM operation, ±1.5% output voltage accuracy over load/line/temperature, and 2.7V–5.5V input range-designed for automotive point-of-load regulation where compact size and low quiescent current are critical.

For engineers reviewing the MAX20073ATBA/V+ datasheet, MAX20073ATBA/V+ pinout, MAX20073ATBA/V+ application, or MAX20073ATBA/V+ equivalent, key selection factors include factory-preset 3.3V output (±1.5%), active-low RESET output timing, spread-spectrum enable capability, soft-start duration, and thermal shutdown behavior under sustained 3A load at +125°C ambient.

Technical Context

The MAX20073ATBA/V+ employs current-mode control architecture with internal high- and low-side MOSFETs (R_DS(ON) typical 45mΩ / 25mΩ), enabling stable regulation across 0.5V–3.8V output range using external feedback resistors or factory-trimmed V_OUT. It supports forced-PWM and skip modes for light-load efficiency optimization.

Its 2.2MHz switching frequency allows full-ceramic output filtering with ≤1µH inductors and eliminates need for electrolytic capacitors; the integrated 107% overvoltage and 93% undervoltage monitors provide independent output supervision without external circuitry.

Key Specifications

Pinout & Package

MAX20073ATBA/V+ is housed in a 3mm × 3mm × 0.85mm, 10-pin TDFN package with exposed thermal pad (EP) for enhanced power dissipation in high-current automotive environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck converter applications.

Compared with TPS6286418RTER and MPQ4436AGL-AEC1-P, MAX20073ATBA/V+ uniquely integrates RESET, spread-spectrum enable, and factory-preset 3.3V output in a 3mm × 3mm AEC-Q100-compliant package-reducing component count and layout risk for 5V intermediate bus point-of-load designs.

Availability

MAX20073ATBA/V+ is available at Aetrix Electronics and suitable for automotive camera modules, ADAS domain controllers, and infotainment systems requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.

Supply support for MAX20073ATBA/V+ 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 automotive, industrial, and communications applications.

The MAX20073ATBA/V+ belongs to the MAX20073 family of automotive-grade synchronous buck converters engineered specifically for low-voltage, high-efficiency point-of-load regulation in safety-critical ADAS and infotainment subsystems.

FAQ

What is the factory-preset output voltage of the MAX20073ATBA/V+?

The MAX20073ATBA/V+ is factory-trimmed to deliver a precise 3.3V output with ±1.5% accuracy over line, load, and temperature. This eliminates the need for external feedback resistors in standard configurations, simplifying design and improving long-term stability. The MAX20073ATBA/V+ achieves this using internal laser-trimmed references and does not require any external components to set the nominal output voltage.

Does the MAX20073ATBA/V+ support synchronization to an external clock?

No, the MAX20073ATBA/V+ operates at a fixed 2.2MHz switching frequency and does not support external clock synchronization. However, it includes a spread-spectrum enable (SS_EN) input that reduces EMI peaks by dithering the switching frequency-providing an alternative method for meeting stringent automotive radiated emissions standards without requiring external clock sources. The MAX20073ATBA/V+ uses internal oscillator control only.

What protection features are integrated into the MAX20073ATBA/V+?

The MAX20073ATBA/V+ integrates overcurrent limiting, thermal shutdown (triggering at ~155°C junction temperature), 107% overvoltage monitoring, and 93% undervoltage monitoring. It also features an active-low RESET output with 140ms delay for power-good signaling. These protections operate independently of external components, enabling robust operation in automotive environments without additional supervision ICs. All functions are fully specified across −40°C to +125°C ambient.

Can the MAX20073ATBA/V+ be used with a 12V input supply?

No-the MAX20073ATBA/V+ has a maximum input voltage rating of 5.5V and is designed for 2.7V–5.5V operation, making it unsuitable for direct 12V battery input. It is intended for post-regulation from intermediate 3.3V or 5V rails in automotive systems. For 12V input applications, a pre-regulator or higher-VIN buck converter such as the MAX20096 or MPQ4436 must be used upstream of the MAX20073ATBA/V+.

Is the MAX20073ATBA/V+ AEC-Q100 qualified?

Yes, the MAX20073ATBA/V+ is qualified per AEC-Q100 Grade -40°C to +125°C ambient temperature requirements and is rated for automotive applications including ADAS, infotainment, and telematics. Its 10-pin TDFN package with exposed pad, integrated protection features, and guaranteed parametric performance across the full temperature range confirm its suitability for under-hood and cabin-mounted automotive electronics. The MAX20073ATBA/V+ meets stress testing and reliability criteria defined in the AEC-Q100 standard.