Features and Benefits
- Small Solution Size
- 16-Pin Side-Wettable (3mm x 3mm) TQFN with an Exposed Pad
- Low On-Time Architecture Eliminates the Need for Cascading Bucks
- Wide 3.5V to 17V Input Voltage Range for Power- Over-Coax Cables
- Fixed Output-Voltage Options
- EMI Solutions
- Optional Spread-Spectrum Frequency Modulation
- Pinout Placement Allows for Tight PCB Layout of Switching Nodes
- Self-Protected and Robust
- Overvoltage and Undervoltage Monitoring, Overvoltage Protection, Thermal Shutdown, and Short- Circuit Protection
- 500mV Input Hysteresis Allows for Long, Low-Cost Cables During Slow Starts
- Automotive Ready
- Automotive Temperature Range
- AEC-Q100 Qualified
The MAX20049 is a dual step-down converter IC with two low-dropout regulators (LDOs), providing a single-chip solution for automotive cameras. The two step-down converters are designed for fixed-frequency PWM operation with input voltages from 5V to 17V for MAX20049, 4V to 17V for MAX20049C, and 3.5V to 17V for MAX20049D. The dedicated high-voltage inputs allow for a flexible solution.
The IC provides voltage monitoring on all four output rails. Once an overvoltage or undervoltage is detected, power good gets pulled low. To accommodate long and inexpensive coax cables, the device has a 500mV SUP1 hysteresis. Both bucks offer very low on-time and allow operation from 17V input to 0.9V output. High-frequency operation allows for an all-ceramic capacitor design and small-size external components. The low-resistance on-chip switches ensure high efficiency while minimizing critical inductances.
Output voltages are factory set and cover various sensor imagers needing 3.3V, 3.0V, 2.9V, 2.8V, or 2.7V. The secondary supplies cover the typical 1.8V, 1.2V, 1.1V, and < 1.0V rails for the serializer and memory. The Output-Voltage Selection section covers all the voltage options for flexibility in the camera design.
Protection features include cycle-by-cycle current limit, and thermal shutdown with automatic recovery. The buck converters operate 180° out-of-phase from each other to minimize input current ripple.
- Camera Module — Surround, Rear, Front
- Point of Load
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
The MAX20049 evaluation kit (EV kit) is a fully assembled and tested application circuit for the MAX20049 mini dual step-down converters with dual LDOs. The EV kit is set up to provide four output voltages from one single input-voltage source. Both step-down converters (OUT1, OUT2) and LDO3 can accept a high input-voltage source (17V max). The IC also features a high-PSRR and low-noise LDO3. Each step-down converter can deliver up to 500mA load current, whereas LDO3 delivers 100mA and LDO4 400mA.
- Camera Module — Surround, Rear, Front
- Point of Load
Features & Benefits
- MAX20049ATEA/VY+ Installed (Other IC Options Available):
- VOUT1 = 3.8V
- VOUT2 = 1.8V
- VOUT3 = 3.3V
- VOUT4 = 1.2V
- Inductors Installed Balance Size and Efficiency (see Bill of Materials)
- PGOOD PCB Pad Provided for Voltage Monitoring
- Configurable SUP1 and SUP2 Using Resistors R4 and R5
- Selectable LDOIN3 Input Using Jumper JU1
- Proven PCB Layout
- Fully Assembled and Tested
Documentation & Resources
Tools & Simulations
EE-Sim® Power Tools
The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.
MAX20049 Companion Parts
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Sample & Buy
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Please see the latest communication from our CCO regarding lead times.
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.