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Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture

Industry's First 2Mhz Automotive Buck-Boost Converter Operates Seamlessly from 2V Cold Crank to VBATT

Product Details

Key Features

Parametric specs for Step-Down/Up Switching Regulators
VIN (V) (min) 2
VIN (V) (max) 40
VOUT1 (V) (max) 12
IOUT1 (A) (max) 0.6
Switch Type Internal
Preset VOUT (V) 5
Output Adjust. Method Preset
Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Alternate Topology Step-Down
Step-Up
Step-Up/Down
Switching Frequency (kHz) 200
300
400
500
1000
2200
Design Tools EE-Sim
Package/Pins TQFN-CU/20
Oper. Temp. (°C) -40 to +85
-40 to +125
Budgetary
Price (See Notes)
2.09
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Simplified Block Diagram

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Parameters

Parametric specs for Step-Down/Up Switching Regulators
VIN (V) (min) 2
VIN (V) (max) 40
VOUT1 (V) (max) 12
IOUT1 (A) (max) 0.6
Switch Type Internal
Preset VOUT (V) 5
Output Adjust. Method Preset
Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Alternate Topology Step-Down
Step-Up
Step-Up/Down
Switching Frequency (kHz) 200
300
400
500
1000
2200
Design Tools generateDesignEESIMUrl('https://maxim.transim.com/pwm2/designreq/Index?partId=13012', '')
Package/Pins TQFN-CU/20
Oper. Temp. (°C) -40 to +85
-40 to +125
Budgetary
Price (See Notes)
2.09

Key Features

  • Meets Stringent Automotive Quality and Reliability Requirements
    • 2V to 36V Operating VIN Allows Operation in Cold-Crank Conditions
    • Tolerates Input Transients Up to 40V
    • EN Pin Compatible from 3.3V to 40V
    • 0.6A (max) Output Current (MAX20039)
    • 1.2A (max) Output Current (MAX20040)
    • -40°C to +125°C Automotive Temperature Range
    • AEC-Q100
    • Increased Efficiency with Reduced BOM Cost and Board Space
    • Integrated FETs H-Bridge Architecture
    • Fixed Output Voltages
    • 20-Pin SWTQFN Package
  • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements (B and D Version only)
    • 52µA Quiescent Current when in Standby Mode
    • 10µA (max) Quiescent Current in Shutdown Mode
  • High Switching Frequency Allows Use of Small External Components
    • 200kHz to 2.2MHz Operating Frequency
    • Skip Mode for Efficient Low-Power Operation (B and D version only)
    • Fixed-Frequency PWM Mode
    • External Frequency Synchronization
  • Reduced EMI Emissions at the Switching Frequency
    • Spread Spectrum Can be Enabled or Disabled

Applications/Uses

  • Body Electronics
  • Infotainment Systems
  • Point-of-Load (POL) Power Supply
  • Power over Coax (POC)
  • Start-Stop Systems

Description

The MAX20039/MAX20040 ICs are a small, synchronous buck-boost converter family with integrated high-side and low-side switches. The MAX20040 is designed to deliver up to 1.2A with input voltages from 2V to 36V while using only 52µA quiescent current at no load. The ICs provide an accurate output voltage of ±2%. Voltage quality can be monitored by observing the PGOOD signal.

The MAX20039/MAX20040 offer a fixed output voltage of 5V and a programmable range of 4.0V to 15V. See the Ordering Information table for more details. Frequency is adjustable from 220kHz to 2.2MHz, which allows for small external components, reduced output ripple, and guarantees no AM interference. Skip mode with low quiescent current of 52µA is available in the MAX20040B and MAX20040D versions of the IC. The ICs can operate with spread-spectrum frequency modulation designed to minimize EMI-radiated emissions due to the modulation frequency.

The MAX20039/MAX20040 are available in a small (4mm x 4mm), 20-pin, side-wettable TQFN package and use very few external components.

Design Solution: Provide a Safe Power Path from the Car Battery to Remote Cameras ›

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.