Analog Devices Inc./Maxim Integrated MAX20002ATPB/V+C2

Overview

MAX20002ATPB/V+C2 from Maxim Integrated is a 2A synchronous buck converter with integrated high-side and low-side MOSFETs, designed for automotive point-of-load regulation. It operates from 3.5V to 36V input, delivers fixed 5V/3.3V or adjustable 1V–10V output, and achieves 15µA quiescent current in skip mode-enabling always-on functionality in vehicle infotainment and ADAS modules.

For engineers reviewing the MAX20002ATPB/V+C2 datasheet, MAX20002ATPB/V+C2 pinout, MAX20002ATPB/V+C2 application, or MAX20002ATPB/V+C2 equivalent, key selection criteria include AEC-Q100 qualification, 99% dropout duty cycle, ±1% FB accuracy for programmable outputs, 42V load-dump protection, and spread-spectrum EMI control via SPS pin.

Technical Context

This current-mode step-down converter uses internal transconductance error amplification (700µS), resistor-programmable oscillator (220kHz–2.2MHz), and cycle-by-cycle current limiting. Its dual-supply architecture separates SUP (bias regulator input) and SUPSW (switch driver input), enabling stable operation during cold-crank transients down to 3.5V.

The device implements adaptive dropout management via continuous off-time monitoring (100ns threshold), forcing low-side conduction every 12µs to sustain 99% duty cycle. PGOOD logic (95% rise / 92.5% fall thresholds) and thermal shutdown (175°C trip, 15°C hysteresis) provide deterministic fault response in automotive environments.

Key Specifications

Pinout & Package

MAX20002ATPB/V+C2 is housed in a 5mm × 5mm, 20-pin TQFN package with exposed pad (EP), optimized for thermal dissipation in high-power-density automotive PCBs. The package supports JEDEC-standard reflow and meets RoHS requirements.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM61480RQR and TPS62933RQYR, MAX20002ATPB/V+C2 uniquely combines AEC-Q100 qualification, 42V load-dump tolerance, integrated spread-spectrum, and fixed soft-start-reducing validation effort and bill-of-materials count for automotive Tier 1 suppliers.

Availability

MAX20002ATPB/V+C2 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX20002ATPB/V+C2 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 demanding industrial, automotive, and communications applications.

The MAX20002/MAX20003 product line targets automotive power conversion with emphasis on AEC-Q100 compliance, cold-crank resilience, and EMI reduction-addressing core challenges in next-generation vehicle electronics.

FAQ

What is the maximum duty cycle supported by MAX20002ATPB/V+C2, and how does it benefit automotive applications?

MAX20002ATPB/V+C2 supports up to 99% duty cycle, enabling regulation during severe undervoltage conditions such as automotive cold-crank (input dropping to ~4.5V). This prevents system brownout and maintains power to critical ECUs without requiring larger input capacitors or auxiliary boost stages-directly improving vehicle start reliability and reducing BOM cost.

Does MAX20002ATPB/V+C2 require external components for basic operation, and what are the minimum required?

Yes, MAX20002ATPB/V+C2 requires external components for stable operation: a single resistor (RFOSC) to set switching frequency, an inductor (e.g., 2.2µH), input/output capacitors (≥4.7µF and ≥44µF respectively), BST capacitor (0.1µF), and BIAS bypass (2.2µF). No external MOSFETs, drivers, or compensation ICs are needed-the integrated FETs and error amplifier reduce total component count to ≤10 passive parts.

How does the spread-spectrum feature of MAX20002ATPB/V+C2 improve EMC performance?

When enabled via the SPS pin, MAX20002ATPB/V+C2 modulates its switching frequency by ±3% using a triangular waveform (110µs period at 2.2MHz), spreading energy across a bandwidth instead of concentrating it at a single fundamental frequency. This reduces peak radiated emissions by >10dB in the 30–1000MHz range-helping automotive designs pass CISPR 25 Class 5 without costly shielding or filter redesign.

What protection features does MAX20002ATPB/V+C2 include for harsh automotive environments?

MAX20002ATPB/V+C2 integrates 42V load-dump tolerance, cycle-by-cycle current limiting, thermal shutdown (175°C trip with 15°C hysteresis), overvoltage protection (107% VOUT), and input UVLO (3.5V). These features eliminate the need for external TVS diodes, current-sense amplifiers, or thermal sensors-reducing footprint and improving field reliability in engine bay and dashboard deployments.

Can MAX20002ATPB/V+C2 be synchronized to an external clock, and what are the constraints?

Yes, MAX20002ATPB/V+C2 accepts external synchronization via the FSYNC pin. The external clock frequency must be within ±20% of the internally programmed frequency (e.g., 2.2MHz ±440kHz). If the external clock deviates beyond this range, the device reverts to internal oscillation after two missing cycles. Synchronization disables internal spread-spectrum but passes any modulation present on the external clock source.