Analog Devices Inc./Maxim Integrated MAX20049DATEA/VY+

Overview

The MAX20049DATEA/VY+ from Analog Devices is a dual 2.2MHz, 1A synchronous step-down converter with integrated dual LDOs (150mA LDO3 and 400mA LDO4), designed as a single-chip quad-rail power solution for automotive camera modules. It operates from 5V to 17V input, delivers factory-set outputs including 3.1V/1.8V buck rails and 2.8V/1.2V LDO rails, and integrates voltage monitoring, 180° out-of-phase operation, and AEC-Q100 qualification for rear/front/surround-view systems.

For engineers reviewing the MAX20049DATEA/VY+ datasheet, MAX20049DATEA/VY+ pinout, MAX20049DATEA/VY+ application, or MAX20049DATEA/VY+ equivalent, this device supports compact all-ceramic designs, power-over-coax compatibility via 500mV SUP1 hysteresis, fixed-output flexibility for image sensors and serializers, and automotive-grade protection including cycle-by-cycle current limit and thermal shutdown with auto-recovery.

Technical Context

The MAX20049DATEA/VY+ implements two independent PWM-controlled buck converters operating at 2.2MHz (±3% spread-spectrum option) with 180° phase shift to minimize input ripple. Each buck supports 0.9V–3.8V output with ±2% accuracy over -40°C to +125°C, using low-R_DS(ON) internal MOSFETs (HS: 300–550mΩ, LS: 250–450mΩ) and 80ns minimum off-time for high VIN-to-VOUT ratios.

It integrates two dedicated LDOs: LDO3 (2.7V–3.3V, 150mA, 350mV dropout at 100mA) powered from SUP1 or cascaded from buck outputs, and LDO4 (1.0V–2.0V, 400mA, 35–100mV dropout) powered from Buck2. All four rails feature independent OV/UV monitoring feeding a shared open-drain PGOOD signal with 50µs debounce.

Key Specifications

Pinout & Package

Package: 16-pin side-wettable TQFN (3mm × 3mm) with exposed pad; RoHS-compliant, thermal resistance θ_JA = 43.3°C/W (4-layer board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX20049CATEA/VY+ and MAX20049DTEA/VY+, the MAX20049DATEA/VY+ balances input robustness (5V UVLO), coax-friendly hysteresis, and widely adopted sensor voltage options (3.1V/1.8V/2.8V/1.2V), making it optimal for cost-sensitive, volume automotive camera designs without extreme low-VIN or sub-1V requirements.

Availability

MAX20049DATEA/VY+ is available at Aetrix Electronics and suitable for automotive rear-view cameras, front ADAS camera modules, surround-view system nodes, and camera ECU power subsystems requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.

Supply support for MAX20049DATEA/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 MAX20049 family is part of Analog Devices' automotive power management portfolio, engineered specifically to consolidate multi-rail camera power delivery into a single AEC-Q100-qualified IC while meeting stringent EMI, thermal, and reliability requirements of modern ADAS systems.

FAQ

What is the input voltage range supported by the MAX20049DATEA/VY+?

The MAX20049DATEA/VY+ supports an input voltage range of 5V to 17V. This range is optimized for automotive 12V systems and power-over-coax implementations, with a 5V rising UVLO threshold and 500mV hysteresis to prevent instability during slow cable voltage ramps. It does not support inputs below 5V - for lower VIN, consider the MAX20049CATEA/VY+ variant.

How are the output voltages configured on the MAX20049DATEA/VY+?

The MAX20049DATEA/VY+ features factory-programmed output voltages with no external resistor network required. Its default configuration delivers 3.1V on Buck1, 1.8V on Buck2, 2.8V on LDO3, and 1.2V on LDO4 - selected to match common CMOS image sensor and serializer voltage requirements. Other fixed options (e.g., 2.9V/3.3V/2.7V for LDO3; 1.0V–2.0V in 100mV steps for LDO4) are available as orderable variants.

Does the MAX20049DATEA/VY+ include power-good monitoring?

Yes, the MAX20049DATEA/VY+ includes comprehensive power-good monitoring across all four output rails (OUTS1, OUTS2, OUTS3, OUTS4). The open-drain PGOOD pin asserts low if any rail falls below its undervoltage falling threshold (e.g., 87–92% for bucks, 89–95% for LDOs) or rises above its overvoltage rising threshold (102.5–115%). A 50µs debounce time prevents false triggering during transient events.

What thermal protection features does the MAX20049DATEA/VY+ provide?

The MAX20049DATEA/VY+ incorporates thermal-overload protection that disables both buck converters and LDOs when junction temperature exceeds +175°C (typical). After shutdown, the device automatically recovers once temperature drops by ~15°C, then reinitiates soft-start sequencing. Thermal resistance is specified at θ_JA = 43.3°C/W on a 4-layer board, and the exposed pad must be soldered to the PCB ground plane for effective heat dissipation.

Can the MAX20049DATEA/VY+ be used with power-over-coax infrastructure?

Yes, the MAX20049DATEA/VY+ is explicitly designed for power-over-coax applications. Its 500mV SUP1 hysteresis accommodates voltage drop across long, low-cost coax cables during slow startup, and the 5V–17V input range aligns with typical coax-fed camera power specifications. LDO3 can be powered directly from SUP1 to maximize PSRR, or cascaded from Buck1/Buck2 for tighter regulation - both configurations are supported in production variants of the MAX20049DATEA/VY+.