General Description

The MAX20002/MAX20003 are small, synchronous

buck converters with integrated high-side and low-side

MOSFETs. Each device is designed to deliver up to 2A/3A

with input voltages from 3.5V to 36V, while using only

15µA quiescent current at no load. Voltage quality can be

monitored by observing the PGOOD signal. The devices

can operate in dropout by running at 98% duty cycle,

making them ideal for automotive applications.

The devices offer fixed output voltages of 5V/3.3V, along

with the ability to program the output voltage between 1V

to 10V. Frequency can be programmed using a resistor

to ground on the FOSC pin from 220kHz to 2.2MHz. The

devices offer a forced fixed-frequency mode and skip

mode with ultra-low quiescent current of 15µA. They have

a pin that can be programmed to turn on/off the spread

spectrum, further helping systems designers with better

EMC management.

The MAX20002/MAX20003 are available in a small 5mm x

5mm 20-pin TQFN package with exposed pad and use very

few external components.

Applications

● Point-of-Load Applications in Automotive

● Distributed DC Power Systems

● Navigation and Radio Head Units

Benefits and Features

● Synchronous DC-DC Converter with Integrated FETs

• MAX20002 = 2A

• MAX20003 = 3A

• 15µA Quiescent Current When in Skip Mode

● Small Solution Size Saves Space

• 220kHz to 2.2MHz Adjustable Frequency

• Programmable 1V to 10V Output for the Buck or

Fixed 5V/3.3V Options Available

• Fixed 8ms Internal Soft-Start

• Fixed Output Voltage with ±2% Output Accuracy

(5V/3.3V) or Externally Resistor Adjustable (1V to

10V) with ±1% FB Accuracy

● PGOOD Output and High-Voltage EN Input Simplify

Power Sequencing

● Protection Features and Operating Range Ideal for

Automotive Applications

• 42V Load-Dump Protection

• 99% Duty-Cycle Operation with Low Dropout

• -40°C to +125°C Automotive Temperature Range

• AEC-Q100 Qualified

• Fast and Accurate Overvoltage Protection

Enables Fast Recovery from Automotive Transients

(MAX20002C/E and MAX20003C/E)

Ordering Information appears at end of data sheet.

19-7311; Rev 17; 7/20

MAX20002/MAX20003

36V, 220kHz to 2.2MHz, 2A/3A Fully

Integrated Step-Down Converters

with 15μA Operating Current

EVALUATION KIT AVAILABLE

Click

here to ask about the production status of specific part numbers.