MAX16920

PRODUCTION

Automotive Power-Management IC with Three Step-Down Converters and Linear Regulator

4-Channel, High-Frequency Automotive Power Supply has Overvoltage Protection

Data Sheet (Rev. 2) Product Selection Table

Part Models: 2
1ku List Price: Starting From $6.83

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Overview

5.5V to 28V Wide Operating Voltage Range
Tolerates Input Voltage Transients Up to 45V
Three High-Voltage Buck Converters with High Efficiency
DC-DC1: 150mA (max), Always-On, Ultra-Low Quiescent Current (25µA)
- 3.3V Fixed or Adjustable from 1.22V to 5V
DC-DC2: 600mA (max), 5.0V Fixed or Adjustable Output Voltage from 1.22V to 5V
DC-DC3: 1.5A (max), 3.3V Fixed or Adjustable from 1.22V to 8.0V
One High-Voltage 5V Linear Regulator (150mA)
pMOS Driver Output with Fixed Overvoltage Shutdown
400kHz (MAX16920A) or 2.2MHz (MAX16920B) Switching Frequency
Frequency Synchronization Input
Open-Drain Power-Good Outputs for DC-DC2, DC-DC3, LDOA, and Power-On Reset for DC-DC1
Enable Inputs for DC-DC2, DC-DC3, and LDO
Internal Soft-Start
±2% Undervoltage Comparator
Overtemperature Shutdown
-40°C to +125°C Operating Temperature Range
Compact 32-Pin TQFN Package (7mm x 7mm)

The MAX16920 power-management IC integrates three high-voltage step-down DC-DC converters, one high-voltage linear regulator, and an overvoltage protection block. The three step-down converters deliver up to 150mA, 600mA, and 1.5A, while the linear regulator is capable of up to 150mA. The MAX16920 is designed to operate with input voltages between 5.5V to 28V and survive voltage transients to 45V, making it ideal for automotive applications.

The MAX16920 is optimized for high efficiency and low standby current. The MAX16920A features 400kHz switching frequency, while the MAX16920B features 2MHz switching frequency. The MAX16920 can be ordered with spread-spectrum frequency modulation. The DC-DC converters can also be synchronized to an external frequency reference using the SYNC input minimize EMI.

The MAX16920 includes power-good outputs (PG_) for DC-DC2, DC-DC3, LDOA, and a power-on reset (active-low POR) for DC-DC1. All regulators other than DC-DC1 have an enable input (EN_). DC-DC1 always operates when power is applied to the MAX16920.

The MAX16920 operates over the -40°C to +125°C temperature range, and is available in a compact, thermally enhanced 32-pin TQFN package (7mm x 7mm).

Applications

Automotive Navigation Systems
Automotive Radios

Part Models: 2
1ku List Price: Starting From $6.83

Documentation

Data Sheet 1

MAX16920: Automotive Power-Management IC with Three Step-Down Converters and Linear Regulator Data Sheet (Rev.2) 03/25/2019

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
MAX16920BATJ/V+	Thin Quad Flatpack, No Leads	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16920BATJ/V+T	Thin Quad Flatpack, No Leads	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 11, 2025 - 2455B ASSEMBLY
		pcn_2455b
MAX16920BATJ/V+	PRODUCTION
MAX16920BATJ/V+T	PRODUCTION
Oct 13, 2017 - 1673 ASSEMBLY
		pcn_1673
MAX16920BATJ/V+	PRODUCTION
MAX16920BATJ/V+T	PRODUCTION

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

Software Resources

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Evaluation Kits

Evaluation Kit for the MAX16920A and MAX16920B

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Features and Benefits

5.5V to 18V Input Range, Survives 45V Transients
3.3V at 150mA Output (OUT1 from DC-DC1)
5V at 600mA Output (OUT2 from DC-DC2)
3.3V at 1.5A Output (OUT3 from DC-DC3)
5V at 150mA Output (OUTA from LDOA)
LED Power-Good Indicators for All Step-Down Converters and LDO
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX16920B evaluation kit (EV kit) is an assembled and tested PCB used to evaluate the MAX16920B power-management IC for automotive radios, containing three step-down converters, one linear regulator (LDO), and an overvoltage-protection block.

The EV kit comes with a MAX16920BATJ/V+ installed, which is the 2.2MHz switching-frequency version. For the 400kHz switching-frequency version, contact the factory for free samples of the pin-compatible MAX16920AATJ/V+. Additional capacitors and inductors are provided in the EV kit for the MAX16920A.