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MAX20002

MAX20002

36V, 220kHz to 2.2MHz, 2A/3A Fully Integrated Step-Down Converters with 15µA Operating Current

2A/3A Automotive Synchronous Step-Down Converter with Low IQ

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Overview

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.
MAX20002, MAX20003: Typical Application Circuit/Block Diagram MAX20002, MAX20003: Typical Application Circuit/Block Diagram Enlarge+

Key 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
    • Fast and Accurate Overvoltage Protection Enables Fast Recovery from Automotive Transients (MAX20002C/E and MAX20003C/E)

Applications/Uses

  • Distributed DC Power Systems
  • Navigation and Radio Head Units
  • Point-of-Load Applications in Automotive

Parametric Specs

See parametric specs for Step-Down Switching Regulators (408)


Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		Preset VOUT
(V)		Output Adjust. MethodIOUT1
(A)		Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)		Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxmaxSee Notes
MAX20002 3.536110
3.3
5
Resistor2InternalYesYes1
220
2200
EE-Sim
TQFN-CU/20
$2.75 @1k
MAX20002C 
3.3
4.2
5
Preset
Resistor
2-
SOIC(N)/8
$2.62 @1k
MAX20003 
3.3
5
Resistor3EE-Sim
TQFN-CU/20
$2.75 @1k
MAX20003C 
3.3
4.2
5
Preset
Resistor
3-
SOIC(N)/8
$2.62 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources


MAX20003EVKIT: Evaluation Kit for the MAX20002 and MAX20003

Technical Documents

App Note 5346 Power Control for Automotive Applications

Tools & Models

  • EE-Sim: Design & Simulate MAX20002
  • MAX20002 SIMPLIS Schematic

    •

    Quality And Environmental

    Request Reliability Report for: MAX20002 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

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    Reference Designs

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    Evaluation Board8407MAX20003EVKIT Evaluation Kit for the MAX20002 and MAX20003