Analog Devices Inc./Maxim Integrated MAX16936RAUEB/V+

Overview

MAX16936RAUEB/V+ from Maxim Integrated is a 2.5A, 3.5V–36V input current-mode synchronous step-down converter with integrated high-side and low-side MOSFETs, fixed 5V output (±2% accuracy), 28µA no-load quiescent current, and resistor-programmable switching frequency from 220kHz to 2.2MHz - designed for automotive power rails in navigation head units and RF-sensitive infotainment systems.

For engineers reviewing the MAX16936RAUEB/V+ datasheet, MAX16936RAUEB/V+ pinout, MAX16936RAUEB/V+ application, or MAX16936RAUEB/V+ equivalent, key selection criteria include AEC-Q100 qualification, 98% max duty cycle for cold-crank support, 180° out-of-phase SYNCOUT for cascaded supplies, and FSYNC-controlled skip/FPWM mode selection to meet EMI requirements in automotive ECUs.

Technical Context

The MAX16936RAUEB/V+ implements current-mode control with cycle-by-cycle overcurrent protection and automatic LX slew-rate adjustment (4ns at >1.1MHz, 8ns otherwise) to optimize EMI-efficiency trade-offs. Its dual supply inputs (SUP and SUPSW) enable robust operation during 42V load-dump transients and sub-3.5V cold-crank conditions.

It integrates a 5V BIAS LDO (4.7–5.4V output, ±200mV UVLO hysteresis), open-drain PGOOD with 95%/92% VFB thresholds, and spread-spectrum modulation (±6%, factory-enabled on S-version) - though MAX16936RAUEB/V+ is the non-spread version per ordering code /V+.

Key Specifications

Pinout & Package

MAX16936RAUEB/V+ is housed in a 16-pin TSSOP-EP package with exposed pad (EP) connected to PGND for thermal management. Pin numbering follows standard TSSOP top-view convention with EP electrically tied to power ground but not used as sole ground connection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16936RAUEB/V+, MAX16938RAUEB/V+ provides tighter overvoltage protection at identical cost and footprint, while LM61480RQRVCRQ1 trades integration for higher output current and lower quiescent current - making it suitable for next-generation ADAS domain controllers needing scalable power delivery.

Availability

MAX16936RAUEB/V+ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics gateway designs requiring stable component supply with AEC-Q100 compliance, extended temperature operation, and load-dump resilience.

Supply support for MAX16936RAUEB/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 high-reliability analog and mixed-signal ICs for automotive, industrial, and communications markets, with emphasis on power management, interface, and sensor signal conditioning.

The MAX16936/MAX16938 product line targets automotive power conversion, delivering integrated synchronous buck regulators with AEC-Q100 qualification, cold-crank support, and EMI-optimized features for infotainment and safety-critical ECUs.

FAQ

What is the output voltage configuration of the MAX16936RAUEB/V+?

The MAX16936RAUEB/V+ provides a fixed 5V output with ±2% accuracy over temperature and line. This is achieved by internally connecting the FB pin to the 5V BIAS rail - eliminating external feedback resistors and simplifying layout. The device does not support adjustable output via external divider in this variant; for 1V–10V programmability, the MAX16936AEUB/V+ (adjustable version) must be selected.

Does the MAX16936RAUEB/V+ support synchronization to an external clock?

Yes, the MAX16936RAUEB/V+ supports external clock synchronization via the FSYNC pin. When driven with a logic-level clock signal (1.8–2.6MHz, ≥100ns pulse width), the device locks to the external frequency within one cycle. During absence of the external clock for >2 cycles, it automatically reverts to its internal oscillator set by the FOSC resistor.

How does the MAX16936RAUEB/V+ handle cold-crank conditions?

The MAX16936RAUEB/V+ sustains regulation during cold-crank events (input down to 3.5V) using a 98% maximum duty cycle and dual-supply architecture (SUP/SUPSW). Its ability to operate at high duty cycle minimizes dropout, while the integrated BIAS LDO remains functional to maintain control loop integrity even as input collapses.

What thermal protection features does the MAX16936RAUEB/V+ include?

The MAX16936RAUEB/V+ incorporates thermal shutdown at +175°C (typical junction temperature) with automatic recovery after cooling by 15°C. It also features cycle-by-cycle current limiting and overvoltage protection. Thermal performance is enhanced by the exposed pad (EP), which must be soldered to a large PGND copper area per JEDEC 51 standards.

Is the MAX16936RAUEB/V+ pin-compatible with other devices in the MAX16936/MAX16938 family?

Yes, the MAX16936RAUEB/V+ shares identical pinout, package (16-pin TSSOP-EP), and electrical interface with all MAX16936 and MAX16938 variants - including MAX16936AEUB/V+, MAX16938RAUEB/V+, and MAX16938AEUB/V+. This enables drop-in replacement for different output configurations (fixed vs. adjustable) or protection thresholds (OVP 107% vs. 105%).