Analog Devices Inc./Maxim Integrated MAX16956AUBC/V+T

Overview

MAX16956AUBC/V+T from Analog Devices is a 36V, 300mA synchronous buck converter with integrated high-side and low-side MOSFETs, fixed 2.1MHz switching frequency, 1.1µA quiescent current in skip mode, and adjustable output (1V–15V via resistor divider), designed for automotive cold-crank operation in body ECUs and point-of-load systems.

For engineers reviewing the MAX16956AUBC/V+T datasheet, MAX16956AUBC/V+T pinout, MAX16956AUBC/V+T application, or MAX16956AUBC/V+T equivalent, this page delivers verified technical identity, validated pin functions, confirmed AEC-Q100 qualification, exact thermal and EMI performance data, and two rigorously cross-checked alternative parts for automotive power supply design.

Technical Context

The MAX16956AUBC/V+T implements current-mode PWM control with integrated slope compensation and load-line architecture to reduce required output capacitance. It uses internal high-side current sensing and fully integrated error-amplifier compensation-no external compensation network is needed.

It supports dual operating modes: forced-PWM (constant 2.1MHz) and skip mode (ultra-low 1.1µA IQ), selected via MODE pin logic level. The device features 97% max duty cycle for dropout operation, ±6% spread-spectrum modulation (disabled in this variant), and open-drain RESET monitoring with 92%/90% VOUT thresholds.

Key Specifications

Pinout & Package

MAX16956AUBC/V+T is housed in a 3mm × 3mm, 10-pin µMAX® package with exposed pad (EP) for thermal dissipation. Package code U10E+3; RoHS-compliant; land pattern per Maxim/Analog Devices document 90-0148.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM61480QWRNXTQ1 and TPS62933QDBVRQ1, the MAX16956AUBC/V+T uniquely balances 3mm × 3mm size, integrated RESET, AEC-Q100 qualification, and proven cold-crank behavior - making it optimal for space-constrained, safety-aware automotive POE designs where supervision and footprint are non-negotiable.

Availability

MAX16956AUBC/V+T is available at Aetrix Electronics and suitable for automotive body ECUs, ADAS camera modules, telematics control units, and infotainment domain controllers requiring stable component supply across extended temperature and long production lifecycles.

Supply support for MAX16956AUBC/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 MAX16956 belongs to Analog Devices' automotive-grade power management portfolio, engineered specifically for harsh-environment DC-DC conversion in body electronics, infotainment, and ADAS subsystems with emphasis on cold-crank resilience, low IQ, and AEC-Q100 compliance.

FAQ

What output voltage range does the MAX16956AUBC/V+T support?

The MAX16956AUBC/V+T is the adjustable-output variant of the MAX16956 family and supports an output voltage range of 1V to 15V. This is achieved by connecting a resistive divider between VOUT and AGND, with the feedback pin (OUT/FB) referenced to an internal 1.0V bandgap. The MAX16956AUBC/V+T datasheet specifies FB voltage accuracy as 0.98V to 1.03V, enabling precise programming across the full range.

Does the MAX16956AUBC/V+T include spread-spectrum frequency modulation?

No, the MAX16956AUBC/V+T does not include spread-spectrum frequency modulation. Per the Selector Guide (Table 2), the "C" suffix denotes the adjustable-output version *without* spread-spectrum; variants with spread-spectrum are designated D (5V), E (3.3V), or F (adjustable). The MAX16956AUBC/V+T operates at a fixed 2.1MHz switching frequency with ±5% variation over temperature and line.

What is the quiescent current of the MAX16956AUBC/V+T in skip mode?

The MAX16956AUBC/V+T specifies a no-load supply current (ISUP) of 32µA to 70µA (typical 45µA) when operating in skip mode. This differs from the 1.1µA value cited for fixed-output versions because the adjustable variant's internal circuitry draws additional current to support the external feedback network and wider VOUT range. The 1.1µA figure applies exclusively to MAX16956AUBA+/V+ (5V) and MAX16956AUBB+/V+ (3.3V) parts.

How is the RESET output of the MAX16956AUBC/V+T configured and used?

The RESET output of the MAX16956AUBC/V+T is an open-drain signal that asserts low when the regulated output voltage falls below 90% of nominal (e.g., <2.97V for a 3.3V rail) and releases high-impedance when VOUT rises above 92%. An external pullup resistor (typically 10kΩ to VBIAS or VOUT) is mandatory. It is used for power-good sequencing, microcontroller reset assertion, and fault detection in automotive systems.

What package type and thermal characteristics apply to the MAX16956AUBC/V+T?

The MAX16956AUBC/V+T uses the 10-pin µMAX® package (3mm × 3mm, exposed pad), package code U10E+3. Its thermal resistance is θJA = 77.6°C/W on a single-layer board and θJC = 5°C/W. For production designs, Analog Devices recommends using a four-layer board with the exposed pad soldered to a large internal ground plane and multiple thermal vias to achieve optimal junction-to-ambient performance.