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Switching Regulators 
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MAX20019
3.2MHz, 500mA Dual Step-Down Converters for Automotive Cameras
Ultra-Small 3.2MHz Dual 500mA Versatile PMIC for Camera Modules
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Key Features
Applications/Uses
Parametric specs for Step-Down Switching Regulators
| Design Tools | EE-Sim |
| Package/Pins | TDFN/10 |
| Budgetary Price (See Notes) | $1.63 @1k 1.63 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | 3.2MHz, 500mA Dual Step-Down Converters for Automotive Cameras | Apr 10, 2020 |
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Parameters
Parametric specs for Step-Down Switching Regulators
| Design Tools | generateDesignEESIMUrl('https://maxim.transim.com/pwm2/designreq/Index?partId=9662', '') |
| Package/Pins | TDFN/10 |
| Budgetary Price (See Notes) | $1.63 @1k 1.63 |
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.
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.
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Technical Docs
| Data Sheet | 3.2MHz, 500mA Dual Step-Down Converters for Automotive Cameras | Apr 10, 2020 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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