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MAX20002 Datasheet

2A/3A Fully Integrated Step-Down Converters

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36V, 220kHz to 2.2MHz, 2A/3A Fully
Integrated Step-Down Converters
with 15μA Operating Current
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.
● 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 Standby 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
• Operating VIN Range of 3.5V to 36V
• 42V Load-Dump Protection
• 99% Duty-Cycle Operation with Low Dropout
• -40°C to +125°C Automotive Temperature Range
AEC-Q100 Qualified
Ordering Information appears at end of data sheet.
19-7311; Rev 5; 4/16
Maxim Integrated
Maxim Integrated

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