Analog Devices Inc./Maxim Integrated MAX20049DATEF/VY+

Overview

MAX20049DATEF/VY+ from Analog Devices is a dual 2.2MHz, 1A synchronous step-down converter with integrated dual LDOs (150mA LDO3 and 400mA LDO4), designed specifically for automotive camera modules. It delivers four regulated outputs - two buck rails (0.9V–3.8V) and two LDO rails (2.7V–3.3V and 1.0V–2.0V) - with input voltage range of 3.5V to 17V, 500mV SUP1 hysteresis for coax cable compatibility, and AEC-Q100 qualification for under-hood operation.

For engineers reviewing the MAX20049DATEF/VY+ datasheet, MAX20049DATEF/VY+ pinout, MAX20049DATEF/VY+ application, or MAX20049DATEF/VY+ equivalent, this device supports compact, all-ceramic power designs for surround-view, rear, and front camera systems requiring precise sequencing, high PSRR, and robust overvoltage/undervoltage monitoring across all four outputs.

Technical Context

The MAX20049DATEF/VY+ integrates two fixed-frequency PWM buck converters operating 180° out-of-phase to minimize input ripple, each supporting 0.9V–3.8V output at up to 1.2A with factory-set voltages. Its dedicated high-voltage LDOIN3 input (2.9V–17V) enables direct connection to power-over-coax cables or cascading from buck outputs, improving PSRR and eliminating preregulators.

Built-in BIAS regulator (5V, 20mA) powers internal circuitry; soft-start sequencing is factory-programmed with Buck1 initiating first (3V/ms ramp), followed by LDO3, then Buck2, and finally LDO4. Protection includes cycle-by-cycle current limiting, thermal shutdown at +175°C (15°C hysteresis), and open-drain PGOOD that monitors all four outputs with independent OV/UV thresholds and 50µs debounce.

Key Specifications

Pinout & Package

MAX20049DATEF/VY+ is housed in a 16-pin side-wettable TQFN (3mm × 3mm) with exposed pad (EP), optimized for automated optical inspection (AOI) and thermal performance in space-constrained camera modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX20049DATEF/VY+, MAX20090ATG/V+ offers wider input range but sacrifices dual-buck efficiency and coax-specific hysteresis, while TPS653221AQPHRQ1 adds safety features and higher current but increases board area and reduces PSRR-critical noise immunity for image sensors.

Availability

MAX20049DATEF/VY+ is available at Aetrix Electronics and suitable for automotive surround-view, rear-view, and front-facing camera modules requiring stable component supply, AEC-Q100 compliance, and compact quad-rail power integration.

Supply support for MAX20049DATEF/VY+ 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 consumer markets.

The MAX20049DATEF/VY+ belongs to Analog Devices' automotive power management portfolio, engineered specifically to consolidate power delivery for next-generation ADAS camera systems with stringent size, thermal, and EMI constraints.

FAQ

What is the input voltage range supported by the MAX20049DATEF/VY+?

The MAX20049DATEF/VY+ supports an input voltage range of 3.5V to 17V on both SUP1 and SUP2 pins. This range is optimized for automotive power-over-coax applications, where voltage drop across long cables must be accommodated without compromising regulation. The 500mV hysteresis on SUP1 ensures stable startup even with slow-rising inputs typical of coax-fed systems.

How does the MAX20049DATEF/VY+ handle power sequencing for its four outputs?

The MAX20049DATEF/VY+ implements factory-programmed sequencing: Buck1 starts first (3V/ms ramp), followed immediately by LDO3; Buck2 begins after Buck1 reaches regulation (3.3V/ms ramp); LDO4 starts once Buck2 is regulated (120µs soft-start). This deterministic order prevents backfeeding and ensures proper initialization of image sensors and serializers in automotive camera modules.

Can the MAX20049DATEF/VY+ be used with power-over-coax interfaces?

Yes - the MAX20049DATEF/VY+ is explicitly designed for power-over-coax camera systems. Its 3.5V–17V input range, 500mV SUP1 hysteresis, and LDOIN3 input rated up to 17V allow direct connection to coax cables without intermediate regulators. The device also supports cascading LDO3 from Buck1/Buck2 outputs for improved PSRR in noise-sensitive imaging paths.

What protection features are integrated into the MAX20049DATEF/VY+?

The MAX20049DATEF/VY+ includes cycle-by-cycle current limiting on both bucks, thermal shutdown at +175°C (with 15°C hysteresis for automatic recovery), overvoltage protection that disables the high-side MOSFET, and comprehensive undervoltage/overvoltage monitoring on all four outputs via the open-drain PGOOD pin. These features ensure robust operation in automotive environments subject to load dumps and thermal stress.

Is the MAX20049DATEF/VY+ AEC-Q100 qualified?

Yes, the MAX20049DATEF/VY+ is qualified per AEC-Q100 Grade 0 (−40°C to +125°C ambient), making it suitable for under-hood and camera module placements in passenger vehicles. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD - ensuring reliability over the full automotive lifecycle.