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3.2MHz, 500mA Dual Step-Down Converters for Automotive Cameras

Ultra-Small 3.2MHz Dual 500mA Versatile PMIC for Camera Modules

Product Details

Key Features

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 3.5
VIN (V) (max) 17
VOUT1 (V) (min) 1
VOUT1 (V) (max) 5
IOUT1 (A) (max) 0.5
Switch Type Internal
Preset VOUT (V) 1
5
Output Adjust. Method Preset
Synchronous Switching? Yes
# DC-DC Outputs 2
Switching Frequency (kHz) 2200
3200
Design Tools EE-Sim
Package/Pins TDFN-CU/10
Budgetary
Price (See Notes)
1.9
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Simplified Block Diagram

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Sampling:
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Parameters

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 3.5
VIN (V) (max) 17
VOUT1 (V) (min) 1
VOUT1 (V) (max) 5
IOUT1 (A) (max) 0.5
Switch Type Internal
Preset VOUT (V) 1
5
Output Adjust. Method Preset
Synchronous Switching? Yes
# DC-DC Outputs 2
Switching Frequency (kHz) 2200
3200
Design Tools generateDesignEESIMUrl('https://maxim.transim.com/pwm2/designreq/Index?partId=9663', '')
Package/Pins TDFN-CU/10
Budgetary
Price (See Notes)
1.9

Key Features

  • Small Solution Size
    • 2mm x 3mm x 0.75mm 10-pin TDFN with an Exposed Pad
    • 2.2MHz and 3.2MHz Operation Allows Smaller System Size
    • No External Components Needed for Soft-Start
  • Cable Flexibility
    • 500mV Enable Hysteresis Allows for Long, Low-Cost Cables During Slow Starts
  • EMI Solutions
    • Optional Spread-Spectrum Frequency Modulation
    • Pinout Placement Allows for Tight PCB Layout of Switching Nodes
  • Self-Protected
    • Overvoltage Protection, Thermal Shutdown, Short-Circuit Protection
  • Automotive Ready
    • Wide 3.5V to 17V Input Voltage Range for Power-Over-Coax
    • Automotive Temperature Range -40°C to +125°C
    • AEC-Q100 Qualified

Applications/Uses

  • Automotive Point-of-Load
  • Surround-View Camera Power Supplies

Description

MAX20019/MAX20020 are 2.2MHz and 3.2MHz dual step-down converters with integrated high-side and low-side MOSFETs. The high-voltage step-down converter is designed for continuous operation up to 17V input voltages. The output voltage is factory preset. Buck 1 is preset to 3.3V, 3.0V, or 2.8V. Buck 2 is preset to 1.8V, 1.5V, 1.2V, or 1V. Another option is Buck 1 preset to 5V and Buck 2 preset to 3.3V.

The low-voltage buck features fixed-frequency PWM- mode operation with a switching frequency of 2.2MHz or 3.2MHz. High-frequency operation allows for an all-ceramic capacitor design and small-size external components. The low-resistance on-chip switches ensure high efficiency while minimizing critical inductance. A 500mV enable hysteresis on the MAX20019 allows the use of long, low-cost coax cables, even during slow startup situations. The MAX20020’s Buck 1 starts after VSUP is greater than 5.5V and Buck 1 is driven by the EN input.

Protection features include overvoltage (OV) protection, cycle-by-cycle current limit, and thermal shutdown with automatic recovery. The buck converters operate 180° out-of-phase from each other to minimize input-current ripple.

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

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Simplified Block Diagram

MAX20019, MAX20020: Functional Diagrams MAX20019, MAX20020: Functional Diagrams Zoom icon

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.