MAX20031

PRODUCTION

Dual Buck, Sync Boost and LDO–Complete Front-End Power Supply with 17μA I_Q

Complete Front End Automotive Power Supply Enables a Space-Efficient, Crank-Ready Design

Data Sheet (Rev. 22)

Product Selection Table

Part Models: 14
1ku List Price: Starting From $2.97

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Overview

Meets Stringent OEM Module Power Consumption and Performance Specifications
- 17µA I_Q with 3.3V Buck on
- 25µA I_Q with 5V Buck on
- 25µA I_Q with LDO on
- 65µA I_Q with All Controllers Enabled
Enables Crank-Ready Designs
- Synchronous Boost Converter for High-Current Capability and Efficiency
EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range
- 50ns (typ) Minimum On-Time Guarantees Skip-Free Operation for 3.3V Output from Car Battery at 2.2MHz
- Forced Fixed-Frequency PWM Operation
- Resistor-Programmable Frequency Between 220kHz and 2.2MHz
- Pin-Selectable Spread Spectrum
Integration and Thermally Enhanced Packages Save Board Space and Cost
- Dual 2.2MHz Step-Down Controller with Synchronous Boost Controller and HV 200mA LDO
- Current-Mode Controller with Forced-Fixed Frequency and Skip Modes
- Thermally Enhanced 7mm x 7mm, 48-Pin TQFN Packages with Exposed Pad
Protection Features Improve System Reliability
- Supply Overvoltage and Undervoltage Lockout
- Overtemperature and Short-Circuit Protections

The MAX20030/MAX20031 ICs are automotive 2.2MHz dual-synchronous step-down controllers with preboost controller and low-I_Q LDO. The preboost controller enables V_OUT1 and V_OUT2 to stay in regulation during cold-crank operation all the way down to battery input of 2V. The ICs offer two high-voltage synchronous step-down controllers that operate 180 degrees out of phase. This device operates with an input-voltage supply from 3.5V to 42V and can operate in dropout conditions by running at 97% duty cycle. It is intended for applications with mid- to high-power requirements that operate at a wide input voltage range, such as during automotive cold-crank or engine stop-start conditions.

The step-down controllers operate at a frequency of up to 2.2MHz to allow small external components, reduced output ripple, and to guarantee no AM band interference. The switching frequency is resistor-adjustable (220kHz to 2200kHz). SYNC input programmability enables three frequency modes for optimized performance: forced fixed-frequency operation, skip mode with ultra-low quiescent current, and synchronization to an external clock. The ICs have a spread-spectrum pin for frequency modulation to minimize EMI interference.

The ICs will be offered with a synchronous step-up controller. This preboost circuitry turns on during low input-voltage conditions, and is designed to provide power to step-down controller channels with input voltages as low at 2V.

The ICs feature a power-OK monitor and overvoltage and undervoltage lockout. Protection features include cycle-by-cycle current limit and thermal shutdown. The MAX20030/MAX20031 are specified for operation over the -40°C to +125°C automotive temperature range.

Applications

Distributed DC Power Systems
Instrument Cluster
Navigation and Radio Head Units

Part Models: 14
1ku List Price: Starting From $2.97

Documentation

Data Sheet 1

MAX20030-MAX20031: Dual Buck, Sync Boost and LDO–Complete Front-End Power Supply with 17μA I_Q Data Sheet (Rev.22) 09/17/2024
- Open Interactive Page

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.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX20031BATMA/V+	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031BATMA/V+T	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031BATMB/V+	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031BATMB/V+T	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031BATMC/V+	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031BATMC/V+T	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031BATMD/V+	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031BATMD/V+T	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031BATME/V+	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031BATME/V+T	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031BATMF/V+	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031BATMF/V+T	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031CATMD/V+	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX20031CATMD/V+T	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 31, 2019 - 1853 WAFER FAB
		pcn_1853
MAX20031BATMB/V+	PRODUCTION
MAX20031BATMB/V+T	PRODUCTION
MAX20031BATMC/V+T	PRODUCTION
MAX20031BATMD/V+	PRODUCTION
MAX20031BATMD/V+T	PRODUCTION
MAX20031BATME/V+T	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

EE-Sim Power® Tools 1

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.

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Evaluation Kits

Evaluation Kit for the MAX20030/MAX20031

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Features and Benefits

Dual-Synchronous Step-Down Controllers Operate at 180° Out-of-Phase to Reduce Switching Noise
Preboost Controller Maintains Operation with Low Supply Voltage
3.5V to 36V Wide Input Supply Range
Buck Output Voltage: 5V and 3.3V Fixed or Adjustable Between 1V and 10V
5V, 200mA LDO Output
Current-Mode Controllers with Forced-PWM and Skip Modes
Resistor-Programmable Frequency Between 1MHz and 2.2MHz
Frequency Synchronization Input
Independent Enable Inputs
Voltage-Monitoring PGOOD_ Outputs
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX20030 evaluation kit (EV kit) is a fully assembled and tested application circuit for the MAX20030 highvoltage, dual-synchronous step-down controller IC with preboost and an internal LDO. The EV kit is set up to provide 5V and 3.3V from an input voltage ranging from 3.5V to 36V. The preboost circuit maintains the 10V supply rail for input voltages below 10V. Each buck rail can deliver up to 5A load current. Various jumpers are provided to help evaluate features of the IC. The EV kit can also be used to evaluate the pin-compatible MAX20031 with IC replacement of U1.