Analog Devices Inc./Maxim Integrated MAX20030BATMA/V+T

Overview

MAX20030BATMA/V+T from Maxim Integrated is an automotive-grade dual synchronous step-down controller with integrated preboost circuit and high-voltage 200mA LDO, designed for front-end power management in cold-crank and stop-start vehicles. It delivers regulated 5V and 3.3V outputs from 2V–42V input, operates up to 2.2MHz, features 17µA quiescent current with 5V buck enabled, and supports 180° out-of-phase operation for reduced input ripple - used in instrument clusters and head units.

For engineers reviewing the MAX20030BATMA/V+T datasheet, MAX20030BATMA/V+T pinout, MAX20030BATMA/V+T application, or MAX20030BATMA/V+T equivalent, key selection criteria include cold-crank capability down to 2V input, resistor-programmable switching frequency (220kHz–2.2MHz), spread-spectrum EMI reduction, thermal shutdown at 170°C, and AEC-Q100 Grade-1 qualification for -40°C to +125°C operation.

Technical Context

The MAX20030BATMA/V+T implements three independent current-mode controllers: two 2.2MHz synchronous buck controllers operating 180° out of phase, and one synchronous boost controller activated below 3.5V input to sustain regulation. Its preboost architecture uses TERM-switched feedback and CS3P/CS3N differential sensing to maintain VOUT1/VOUT2 during cold crank.

Control logic includes three FSYNC modes (forced PWM, skip, external sync), pin-selectable spread spectrum (SPS), and dedicated enable inputs (EN1–EN4) with precise thresholds (e.g., EN3 falling threshold = 0.95V). All controllers share a common BIAS rail and support EXTVCC bypassing for improved efficiency.

Key Specifications

Pinout & Package

MAX20030BATMA/V+T is housed in a thermally enhanced 7mm × 7mm, 48-pin TQFN package with exposed pad (EP = GND), optimized for automotive PCB layouts requiring high power density and thermal reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail automotive power management applications.

Compared with MAX20031BATMA/V+T, the MAX20030BATMA/V+T offers tighter EN3 threshold control for hardware-triggered boost activation, while MPQ4333-AEC1 trades integration for lower BOM count in non-cold-crank systems - making MAX20030BATMA/V+T optimal for full-featured, crank-ready front-end power.

Availability

MAX20030BATMA/V+T is available at Aetrix Electronics and suitable for instrument cluster, navigation head unit, and distributed DC power systems requiring stable component supply across automotive production lifecycles.

Supply support for MAX20030BATMA/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

Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets.

The MAX20030 product line delivers fully integrated front-end power solutions for automotive modules demanding cold-crank resilience, ultra-low quiescent current, and EMI-compliant switching - targeting instrument clusters, head units, and ADAS domains.

FAQ

What is the minimum input voltage supported by the MAX20030BATMA/V+T during cold-crank operation?

The MAX20030BATMA/V+T supports operation down to 2V input when the preboost controller is enabled, maintaining regulation on both VOUT1 and VOUT2 outputs. This capability is verified across the full -40°C to +125°C temperature range and is essential for automotive cold-crank compliance. The preboost activates automatically below ~3.5V input and uses TERM-switched feedback to sustain output stability.

Does the MAX20030BATMA/V+T support synchronization to an external clock source?

Yes, the MAX20030BATMA/V+T supports external clock synchronization via the FSYNC pin, accepting input frequencies from 250kHz to 2.6MHz depending on RFOSC setting. When synchronized, the internal switching frequency locks to the external clock with 1:1 ratio, enabling deterministic EMI placement and multi-phase coordination in complex power systems. The FSYNC input has defined logic thresholds (0.4V low, 1.4V high) and minimum pulse width (150ns).

How is the output voltage of the integrated LDO configured on the MAX20030BATMA/V+T?

The MAX20030BATMA/V+T's HV LDO output is factory-configured to either 5V or 3.3V; the BATMA suffix indicates the 5V version. Voltage selection is made via internal laser trimming - no external resistors are required for fixed outputs. For adjustable operation, FB4 is connected to a resistor divider between OUT4 and PGND4, supporting 1.5V–10V range with 1.25V feedback reference.

What thermal protection mechanisms does the MAX20030BATMA/V+T include?

The MAX20030BATMA/V+T incorporates thermal shutdown at +170°C with 20°C hysteresis, plus cycle-by-cycle current limiting on all three controllers (buck 1, buck 2, and boost). Junction temperature is monitored continuously; shutdown disables all controllers and resets only after die temperature falls below +150°C. Thermal resistance is θJA = 23.3°C/W on a 4-layer board, and the exposed pad must be soldered to a thermal plane for effective heat dissipation.

Can the MAX20030BATMA/V+T operate without the internal BIAS LDO enabled?

Yes, the MAX20030BATMA/V+T can operate with the internal 5V BIAS LDO disabled by applying a valid 3.25V–5.5V supply to the EXTVCC pin. When EXTVCC is present, the BIAS regulator shuts off and the IC draws power from EXTVCC instead - reducing self-heating and improving overall system efficiency. EXTVCC must be stable and low-noise, as it powers all internal circuitry including gate drivers and error amplifiers.