Analog Devices Inc./Maxim Integrated MAX20416ATGD/V+

Overview

The MAX20416ATGD/V+ from Maxim Integrated is a dual-output, synchronous step-down DC-DC converter designed for automotive power rails. It delivers up to 3A per channel from a 3.0V–5.5V input, supports resistor-adjustable outputs (0.8V–3.8V), operates at 2.2MHz fixed frequency, and achieves ±1.5% output voltage accuracy across load, line, and temperature. It is AEC-Q100 qualified and used in instrument cluster and infotainment systems.

For engineers reviewing the MAX20416ATGD/V+ datasheet, MAX20416ATGD/V+ pinout, MAX20416ATGD/V+ application, or MAX20416ATGD/V+ equivalent, key selection considerations include dual-channel independent enable/reset, spread-spectrum EMI reduction, factory-configured skip-mode SYNC input, 4mm × 4mm TQFN-24 package, and automotive-grade thermal protection (165°C shutdown with 15°C hysteresis).

Technical Context

The MAX20416ATGD/V+ integrates two independent current-mode synchronous buck controllers with programmable soft-start (1.25ms or 2.5ms), cycle-by-cycle overcurrent limiting, and open-drain RESET outputs tied to individual undervoltage/overvoltage thresholds (±3% accuracy). Each channel features dedicated PVx, LXx, PGNDx, and OUTx pins for optimized layout and noise isolation.

Its SYNC pin is factory-configured as an input enabling forced-PWM mode when driven high or external clocked (1.8–2.6MHz), and skip mode when low or floating - supporting EMI-sensitive and light-load efficiency requirements without external logic. The internal oscillator provides ±3% spread-spectrum modulation to reduce radiated emissions.

Key Specifications

Pinout & Package

The MAX20416ATGD/V+ is housed in a lead(Pb)-free, RoHS-compliant 24-pin TQFN package (4mm × 4mm, 0.5mm pitch) with exposed thermal pad. This thermally enhanced package supports junction-to-ambient θ_JA of 36°C/W on a 4-layer board, enabling high-power density in space-constrained automotive modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPQ4436-AEC1 and TPS650362-Q1, the MAX20416ATGD/V+ uniquely combines dual 3A adjustable outputs, per-channel enable/reset, and factory-programmable spread-spectrum EMI reduction in a compact 24-pin TQFN - making it optimal for space-constrained, EMI-sensitive automotive applications requiring design flexibility.

Availability

MAX20416ATGD/V+ is available at Aetrix Electronics and suitable for instrument cluster, infotainment, and ADAS sensor hub designs requiring stable component supply, automotive qualification, and long-term production continuity.

Supply support for MAX20416ATGD/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 markets.

The MAX20416 product line delivers highly integrated, AEC-Q100-qualified DC-DC solutions targeting next-generation automotive infotainment, digital cockpit, and ADAS subsystems where compact size, low EMI, and dual-rail flexibility are critical.

FAQ

What output voltage options does the MAX20416ATGD/V+ support?

The MAX20416ATGD/V+ supports resistor-adjustable outputs from 0.8V to approximately PV − 0.5V (e.g., up to ~3.3V with 3.3V input). Unlike fixed-output variants (e.g., MAX20416ATGA/V+), this version has no factory-preset voltage - both OUT1 and OUT2 are configured externally via feedback dividers with R1/R2 networks referenced to the 800mV internal reference. The MAX20416ATGD/V+ datasheet specifies VFB = 800mV and provides Equation 5 for R1 calculation.

How is the SYNC pin configured on the MAX20416ATGD/V+?

The SYNC pin on the MAX20416ATGD/V+ is factory-configured as an input (per Ordering Information/Selector Guide). When pulled high or driven with an external 1.8–2.6MHz clock, it enables fixed-frequency forced-PWM mode; when low or floating, it activates skip mode for improved light-load efficiency. It does not function as an output on this variant - that configuration applies only to versions like MAX20416ATGE/V+.

Does the MAX20416ATGD/V+ include overtemperature protection?

Yes, the MAX20416ATGD/V+ includes thermal shutdown protection that activates at +165°C (typical junction temperature) with 15°C hysteresis. When triggered, the internal bias regulator and step-down controllers disable until the die cools sufficiently. This protection is fully integrated and requires no external components. The MAX20416ATGD/V+'s 4mm × 4mm TQFN package with exposed pad ensures effective heat transfer to the PCB, supporting reliable operation in automotive under-hood environments.

What are the key differences between MAX20416ATGD/V+ and MAX20416ATGA/V+?

The MAX20416ATGD/V+ features resistor-adjustable outputs for both channels, whereas MAX20416ATGA/V+ provides factory-fixed 1.5V and 1.2V outputs. Both share identical 3A per channel rating, 2.2MHz operation, AEC-Q100 qualification, and SYNC-as-input configuration. However, MAX20416ATGD/V+ omits factory-set soft-start (SS = Off), while MAX20416ATGA/V+ also uses SS = Off - confirming identical soft-start behavior. The core distinction is configurability: MAX20416ATGD/V+ enables custom rail generation; MAX20416ATGA/V+ offers plug-and-play fixed outputs.

Can the MAX20416ATGD/V+ operate with ceramic output capacitors only?

Yes, the MAX20416ATGD/V+ is explicitly designed for stability with low-ESR ceramic output capacitors - no electrolytic or tantalum types are recommended. Its control loop compensates for ceramic capacitor characteristics, and the datasheet provides COUT calculation guidelines (e.g., COUT12_MIN = 10.5µs × IMAX/VOUT). For a 3A, 1.2V output, minimum recommended capacitance is ~26.25µF fully derated. Using ceramics simplifies layout, improves reliability, and supports the 2.2MHz switching frequency without compromising phase margin.