Analog Devices Inc./Maxim Integrated MAX20075DATCE/V+T

Overview

The MAX20075DATCE/V+T from Analog Devices is a 36V input, 0.6A synchronous buck converter with integrated high-side and low-side MOSFETs, 3.5µA quiescent current in standby mode, ±2% output voltage accuracy at 3.3V, and 20ns minimum on-time for high step-down ratios - deployed in automotive body control modules requiring ultra-low-power always-on regulation.

For engineers reviewing the MAX20075DATCE/V+T datasheet, MAX20075DATCE/V+T pinout, MAX20075DATCE/V+T application, or MAX20075DATCE/V+T equivalent, key selection criteria include AEC-Q100 qualification, 3.5V–36V wide-input operation with 40V load-dump tolerance, fixed 3.3V output option, and side-wettable TDFN-12 package compatibility with automated optical inspection (AOI).

Technical Context

This current-mode-controlled buck regulator uses an internal 2.1MHz oscillator with optional spread-spectrum modulation (±6%) to suppress EMI emissions. It supports forced-PWM or pulse-skipping operation via the SYNC pin and enters 99% duty-cycle dropout mode for low-VIN operation without external circuitry.

Its architecture integrates a high-voltage LDO for BIAS generation, programmable soft-start (2.5ms typ), open-drain PGOOD monitoring, and thermal shutdown at +175°C. The device achieves ±1.5% FB accuracy when configured for adjustable 1V–3.6V outputs using an external resistor divider.

Key Specifications

Pinout & Package

MAX20075DATCE/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 high-reliability automotive PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX20075DATCB/V+T, the MAX20075DATCE/V+T delivers tighter regulation for 3.3V-sensitive loads while maintaining identical footprint and thermal behavior; versus TPS54332DR, it provides automotive-grade robustness, lower IQ, and superior EMI control at the expense of output current headroom.

Availability

MAX20075DATCE/V+T is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and telematics control units requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX20075DATCE/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.

The MAX20075D series belongs to Analog Devices' automotive-qualified power management portfolio, engineered specifically for reliable, low-quiescent-current DC-DC conversion in harsh-temperature, high-transient automotive environments.

FAQ

What is the maximum input voltage transient the MAX20075DATCE/V+T can withstand?

The MAX20075DATCE/V+T is rated for 40V transient events per ISO 7637-2 Pulse 5a, enabling direct connection to automotive battery rails without external TVS diodes. This rating applies across its full operating temperature range (−40°C to +125°C) and is validated per AEC-Q100 stress testing protocols. The device remains functional during these transients without latch-up or parameter shift, ensuring robustness in real-world vehicle electrical systems.

Does the MAX20075DATCE/V+T require external compensation components?

No, the MAX20075DATCE/V+T uses a current-mode control architecture with internal compensation, eliminating the need for external RC networks. Its fixed 2.1MHz switching frequency and optimized loop response allow stable operation with only the recommended 4.7µH inductor and 22µF ceramic output capacitor. This simplifies design, reduces BOM count, and improves production consistency compared to voltage-mode converters requiring manual loop tuning.

How does the MAX20075DATCE/V+T achieve ultra-low quiescent current in standby mode?

The MAX20075DATCE/V+T achieves 3.5µA typical standby current by disabling its internal high-voltage LDO after startup and powering internal circuitry from the regulated output during light-load skip mode. When output current drops below ~5mA, the IC shuts down non-essential blocks-including the LDO-while retaining regulation via the FB comparator and PGOOD logic. This architecture is factory-optimized for 3.3V output variants like the MAX20075DATCE/V+T.

Can the MAX20075DATCE/V+T operate in dropout, and what is its minimum dropout voltage?

Yes, the MAX20075DATCE/V+T operates in dropout by achieving up to 99% duty cycle, allowing regulation even when input voltage approaches the output voltage. At 3.3V output, it maintains regulation down to ~3.4V input (100mV dropout) under light loads. In deep dropout, the IC pulses the low-side FET for ~200ns every 20µs to refresh the BST capacitor, sustaining gate drive without external charge-pump circuitry.

Is the MAX20075DATCE/V+T pin-compatible with other devices in the MAX20075D/MAX20076D family?

Yes, all MAX20075D/MAX20076D variants-including MAX20075DATCE/V+T, MAX20075DATCB/V+T, and MAX20076DATCC/V+T-share identical 12-pin side-wettable TDFN package (TD1233Y+2C), pinout, and thermal pad layout. Output voltage, current rating, and certain electrical parameters differ, but PCB footprints and solder profiles are fully interchangeable, enabling scalable design reuse across 0.6A/1.2A and 3.3V/5V variants.