Analog Devices Inc./Maxim Integrated MAX16962RAUEA/V+

Overview

MAX16962RAUEA/V+ from Maxim Integrated is a 4A, 2.2MHz synchronous step-down DC-DC converter designed for automotive point-of-load regulation. It operates from 2.7V to 5.5V input, delivers 0.8V–3.6V adjustable output, achieves ±2.6% output voltage accuracy over load/line/temperature, and integrates low-R_DS(ON) MOSFETs in a thermally enhanced 16-pin TSSOP-EP package rated for –40°C to +125°C.

For engineers reviewing the MAX16962RAUEA/V+ datasheet, MAX16962RAUEA/V+ pinout, MAX16962RAUEA/V+ application, or MAX16962RAUEA/V+ equivalent, key selection criteria include its 4A continuous output capability, 2.2MHz fixed-frequency PWM mode with SKIP light-load operation, programmable SYNC I/O, spread-spectrum option (disabled per Selector Guide), open-drain power-good output with 16ms delay, and automotive AEC-Q100 qualification.

Technical Context

The MAX16962RAUEA/V+ implements a current-mode synchronous buck architecture with integrated high-side and low-side MOSFETs. Its 2.2MHz oscillator enables all-ceramic capacitor designs and minimizes EMI through optional spread-spectrum modulation (disabled in this variant) and operation above the AM-radio band.

Control logic supports dual operating modes: forced-PWM (via PWM pin high) for consistent switching frequency and stable transient response, and pulse-frequency modulation (SKIP mode, via PWM pin low) for ultra-low quiescent current (26µA) at light loads. The device features peak-current limiting, thermal shutdown at +165°C with 15°C hysteresis, and an 8ms internal soft-start ramp.

Key Specifications

Pinout & Package

MAX16962RAUEA/V+ is housed in a 16-pin TSSOP-EP (Exposed Pad) package, optimized for automotive thermal performance. The exposed pad must be soldered to a large contiguous copper ground plane using multiple vias for effective heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM61480RQR and TPS62933RTER, MAX16962RAUEA/V+ provides guaranteed 4A output across the full automotive temperature range, factory-programmable SYNC input for system-level timing coordination, and dedicated power grounds for improved EMI performance-making it uniquely suited for safety-critical automotive power rails.

Availability

MAX16962RAUEA/V+ is available at Aetrix Electronics and suitable for automotive infotainment, industrial control units, and ADAS camera modules requiring stable component supply with long-term lifecycle assurance and AEC-Q100 compliance.

Supply support for MAX16962RAUEA/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 MAX16962RAUEA/V+ belongs to Maxim's automotive-grade power management portfolio, engineered specifically for demanding point-of-load regulation in infotainment, ADAS, and body electronics where high efficiency, small size, and extended temperature operation are essential.

FAQ

What is the function of the PWM pin on the MAX16962RAUEA/V+?

The PWM pin on the MAX16962RAUEA/V+ selects between two operating modes: driving it high forces fixed-frequency 2.2MHz PWM mode for optimal transient response, while driving it low enables SKIP mode to reduce quiescent current to 26µA at light loads. This dual-mode capability allows designers to balance efficiency and noise performance based on real-time load conditions in the MAX16962RAUEA/V+ application.

Does the MAX16962RAUEA/V+ require external feedback resistors?

Yes, the MAX16962RAUEA/V+ uses the adjustable output configuration (indicated by "RAUE" in the part number), so it requires an external resistive divider connected between VOUT, OUTS, and GND to set the output voltage within 0.8V–3.6V. The feedback reference voltage is 800mV, and R2 (to GND) must be ≤100kΩ; R1 is calculated using the formula R1 = R2 × (VOUT/0.8V – 1). This configuration is mandatory for proper regulation of the MAX16962RAUEA/V+.

What is the purpose of the separate PGND1 and PGND2 pins on the MAX16962RAUEA/V+?

PGND1 and PGND2 on the MAX16962RAUEA/V+ provide dedicated, low-inductance return paths for the LX1 and LX2 switching nodes respectively. Separating these high-di/dt ground currents from the analog ground (GND) minimizes noise coupling into sensitive feedback and control circuitry, improving stability and reducing output voltage ripple. Both PGND pins must be connected to the main ground plane with short, wide traces adjacent to their respective LX pins to maintain optimal performance of the MAX16962RAUEA/V+.

How does the MAX16962RAUEA/V+ handle thermal overload conditions?

The MAX16962RAUEA/V+ incorporates thermal shutdown protection that disables the controller and bias regulator when the junction temperature exceeds +165°C (typical), allowing the device to cool. After cooling by 15°C hysteresis, normal operation resumes automatically. This protection is independent of load current and relies on an internal thermal sensor, ensuring robust operation even under sustained overload or inadequate PCB heatsinking in the MAX16962RAUEA/V+ design.

Can the MAX16962RAUEA/V+ be synchronized to an external clock source?

Yes, the MAX16962RAUEA/V+ supports external synchronization via its SYNC pin, which is factory-configured as an input per the Selector Guide. It accepts a 1.7MHz to 2.4MHz logic-level clock signal with 50% duty cycle, enabling precise timing alignment with other switching regulators in multi-rail systems. This capability eliminates beat frequencies and reduces system-level EMI, making the MAX16962RAUEA/V+ suitable for complex automotive power architectures requiring coordinated switching.