Analog Devices Inc./Maxim Integrated MAX20075DATCD/V+T

Overview

The MAX20075DATCD/V+T from Analog Devices is a 36V input, 0.6A synchronous buck converter with integrated high-side and low-side MOSFETs, 2.1MHz fixed switching frequency, ±2% output voltage accuracy (for fixed 5V/3.3V options), and ultra-low 3.5µA quiescent current in standby mode - designed for automotive power rails requiring high efficiency across wide input ranges.

For engineers reviewing the MAX20075DATCD/V+T datasheet, MAX20075DATCD/V+T pinout, MAX20075DATCD/V+T application, or MAX20075DATCD/V+T equivalent, key selection criteria include its AEC-Q100 qualification, 3.5V–36V input range with 40V load-dump tolerance, 99% dropout capability, spread-spectrum EMI reduction, and compatibility with 3.3V/5V fixed or 1V–10V resistor-programmable outputs.

Technical Context

This current-mode-controlled buck regulator integrates both power switches and requires no external compensation. It operates in forced-PWM or skip mode depending on SYNC pin state, enabling dynamic efficiency optimization across load conditions from microamps to 600mA.

Its 20ns minimum on-time supports direct step-down from automotive battery (e.g., 12V → 2.5V) without cascaded stages, while the internal 5V BIAS rail powers control circuitry and enables high-voltage EN input compatibility up to 36V.

Key Specifications

Pinout & Package

MAX20075DATCD/V+T is housed in a 3mm × 3mm, 12-pin side-wettable TDFN package (package code TD1233Y+2C) with exposed thermal pad connected to PGND for enhanced thermal performance in automotive environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX20075DATCD/V+T, the MAX20076DATCB/V+T offers double the output current in identical packaging for scalability, while the LM61480RQWR provides comparable efficiency and frequency without automotive-grade reliability or integrated EMI mitigation - making MAX20075DATCD/V+T optimal for space-constrained, safety-critical automotive power rails.

Availability

MAX20075DATCD/V+T is available at Aetrix Electronics and suitable for automotive body electronics, infotainment systems, and industrial sensor nodes requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.

Supply support for MAX20075DATCD/V+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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets with precision power, sensing, and signal chain solutions.

The MAX20075D/MAX20076D family targets automotive power management, delivering compact, AEC-Q100 qualified buck converters optimized for wide-input, low-IQ, and EMI-sensitive applications such as BCMs, ADAS domains, and telematics.

FAQ

What is the maximum input voltage the MAX20075DATCD/V+T can withstand during load-dump events?

The MAX20075DATCD/V+T is rated for 40V transient input voltage per ISO 7637-2 Pulse 5a, allowing it to survive automotive load-dump conditions without external TVS diodes. This rating applies to the SUP pin and is validated across temperature; sustained operation above 36V is not recommended. The device enters shutdown if junction temperature exceeds 175°C during overload, ensuring robustness in real-world automotive environments.

Does the MAX20075DATCD/V+T support adjustable output voltages, and what is the accuracy?

Yes, the MAX20075DATCD/V+T supports 1V to 10V output via an external resistor divider on the FB pin, with ±1.5% feedback reference accuracy (1.0V ±15mV). For fixed outputs, it ships factory-trimmed to 3.3V or 5V with ±2% total output accuracy over line, load, and temperature. The FB pin draws only 0.02µA, minimizing divider current error and enabling high-resistance dividers for low-power designs.

How does the MAX20075DATCD/V+T achieve ultra-low quiescent current, and under what conditions?

The MAX20075DATCD/V+T achieves 3.5µA typical quiescent current in standby mode by disabling its internal high-voltage LDO and most bias circuitry when output current falls below ~5mA and skip mode is active. This mode is automatically entered after eight consecutive clock cycles without high-side FET activation. Standby current rises to 4.5µA for 3.3V versions and 6.6µA for 5V versions under no-load conditions, verified across −40°C to +125°C.

Is the MAX20075DATCD/V+T pin-compatible with other devices in the MAX20075D/MAX20076D family?

Yes, the MAX20075DATCD/V+T shares identical pinout, package (12-pin side-wettable TDFN), and footprint with MAX20076DATCB/V+T and MAX20075DATCE/V+T. All variants use the same PCB land pattern (90-100072) and thermal pad layout. Functional differences - such as output current (0.6A vs 1.2A) and fixed output voltage (3.3V vs 5V) - are implemented internally and do not affect mechanical or electrical interconnect compatibility.

What protection features are integrated into the MAX20075DATCD/V+T?

The MAX20075DATCD/V+T integrates overcurrent protection (1.2A typical current limit, ±12% tolerance), thermal shutdown at 175°C (15°C hysteresis), input undervoltage lockout (2.73V threshold), and output PGOOD monitoring. It also features 99% duty-cycle dropout operation and internal 40V-rated input structure. These protections operate autonomously without external components, enabling robust operation in automotive environments where fault resilience is critical.