MAX20073
Single 2A/3A 2.2MHz Low-Voltage Step-Down DC-DC Converters
Small and Efficient Synchronous Buck Converter with Low IQ for Point-of-Load Applications
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The devices feature fixed-frequency PWM mode of operation, with a 2.2MHz switching frequency. High-frequency operation enables an all-ceramic capacitor design and small external components.
The low-resistance on-chip switches ensure high efficiency at heavy loads while minimizing critical inductances, making the layout a much simpler task with respect to discrete solutions. Following a simple layout and footprint ensures first-pass success in new designs.
The devices provide an enable input, spread-spectrum enable input, and active-low RESET output. The output voltage can be preset at the factory to allow customers to achieve ±1.5% output-voltage accuracy without using expensive 0.1% external resistors. In addition, the output voltage can be set to any customer value by using two external resistors at the feedback with 0.5V internal reference. The device offers a fixed 0.85ms soft-start time.
The 10-pin TDFN exposed pad devices include overtemperature shutdown and overcurrent limiting. All devices are designed to operate over the -40°C to +125°C ambient temperature range.
Design Solution: Why Automotive ECUs Need a High-Performance POL Converter ›
Key Features
- High-Feature Set in Ultra-Small Footprint
- High-Efficiency DC-DC Converter
- Up to 3A Output Current
- 2.7V to 5.5V Operating Supply Voltage
- Resistor-Adjustable or Factory-Preset Output Voltage
- Synchronizable, 2.2MHz Switching-Frequency Enable Input
- Active-Low RESET Output
- Spread-Spectrum Enable Input
- Forced-PWM and Skip Modes
- Current-Mode Architecture
- 3mm × 3mm × 0.85mm 10-Pin TDFN
- High Precision
- 107% Overvoltage Monitor
- 93% Undervoltage Monitor
- ±1.5% Output-Voltage Accuracy
- Excellent Load Transient Performance
- Overtemperature and Short-Circuit Protection
- -40°C to +125°C Operating Temperature Range
Applications/Uses
- Automotive
- Point-of-Load
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 5.5 |
| VOUT1 (V) (min) | 0.5 |
| VOUT1 (V) (max) | 3.8 |
| IOUT1 (A) (max) | 2 |
| Switch Type | Internal |
| Preset VOUT (V) | 3.3 |
| Output Adjust. Method | Preset Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 2200 |
| Design Tools | EE-Sim |
| Package/Pins | TDFN-CU/10 |
| Budgetary Price (See Notes) | $1.20 @1k |
Technical Docs
| Data Sheet | Single 2A/3A 2.2MHz Low-Voltage Step-Down DC-DC Converters | Apr 01, 2020 |
Click any title below to view the detail page where available.
Design Solution: Why Automotive ECUs Need a High-Performance POL Converter ›
Description
The MAX20073 evaluation kit demonstrates the performance and behavior of the MAX20073, a part in the MAX20015–MAX20018/MAX20073/MAX20074 family of pin-compatible, low-voltage, step-down switching regulator ICs.
The regulator delivers current up to 2A at an output voltage between 0.5V and 3.8V. The device operates from a 2.7V to 5.5V input supply voltage, making it ideal for post-regulation and point-of-load applications. The total error over load, line, and temperature ranges is 1.5%. The base switching frequency is 2.2MHz, which allows for all-ceramic capacitor application designs. The regulator can either be synchronized to an external clock or placed in a power-saving skip mode for increased efficiency at light loads.
The regulator provides an enable input and fault flag output. The output voltage can be set using an external resistor-divider and an internal 0.5V reference. Alternatively, it can be programmed at the factory for a specific output voltage, achieving 1.5% output accuracy without resorting to expensive 0.1% resistors. The soft-start time and fault hold time can also be factory programmed.
The regulators include overtemperature shutdown and overcurrent limiting. They are designed to continuously operate over the -40°C to +125°C ambient temperature.
View DetailsFeatures
- 2.7V to 5.5V Input Voltage Range
- 0.5V to 3.8V Output Voltage Range
- Set by External Resistive Divider or Preprogrammed at Factory
- Base EV Kit Configuration Set to 1.8V/2A Output
- High-Frequency Switching (2.2MHz) Allows for an All-Ceramic Capacitor Design
- Continuously Produces Output Current Up to 2A
- Compact Solution Size
- Externally Adjustable Output Implementation Fits Inside 65mm2 Area
- Preprogrammed Output Implementation Fits Inside 55mm2 Area
Description
The MAX20074 evaluation kit demonstrates the performance and behavior of the MAX20074, a part in the MAX20015–MAX20018/MAX20073/MAX20074 family of pin-compatible, low-voltage, step-down switching regulator ICs.
The regulator delivers current up to 3A at an output voltage between 0.5V and 3.8V. The device operates from a 2.7V to 5.5V input supply voltage, making it ideal for post-regulation and point-of-load applications. The total error over load, line, and temperature ranges is 1.5%. The base switching frequency is 2.2MHz, which allows for all-ceramic capacitor application designs. The regulator can either be synchronized to an external clock or placed in a power-saving skip mode for increased efficiency at light loads.
The regulator provides an enable input and fault flag output. The output voltage can be set using an external resistor-divider and an internal 0.5V reference. Alternatively, it can be programmed at the factory for a specific output voltage, achieving 1.5% output accuracy without resorting to expensive 0.1% resistors. The soft-start time and fault hold time can also be factory programmed.
The regulators include overtemperature shutdown and overcurrent limiting. They are designed to continuously operate over the -40°C to 125°C ambient temperature. range
View DetailsFeatures
- 2.7V to 5.5V Input Voltage Range
- 0.5V to 3.8V Output Voltage Range
- Set by External Resistive Divider or Preprogrammed at Factory
- Base EV Kit Configuration Set to 1.8V/3A Output
- High-Frequency Switching (2.2MHz) Allows for an All-Ceramic Capacitor Design
- Continuously Produces Output Current Up to 3A
- Compact Solution Size
- Externally Adjustable Output Implementation Fits Inside 65mm2 Area
- Preprogrammed Output Implementation Fits Inside 55mm2 Area
 | Tools & Models EE-Sim: Design & Simulate MAX20073 | Create Design |
| SIMULATION MODELS MAX20073 SIMPLIS Schematic | Download |
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
Parameters
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 5.5 |
| VOUT1 (V) (min) | 0.5 |
| VOUT1 (V) (max) | 3.8 |
| IOUT1 (A) (max) | 2 |
| Switch Type | Internal |
| Preset VOUT (V) | 3.3 |
| Output Adjust. Method | Preset Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 2200 |
| Design Tools | EE-Sim |
| Package/Pins | TDFN-CU/10 |
| Budgetary Price (See Notes) | $1.20 @1k |
Key Features
- High-Feature Set in Ultra-Small Footprint
- High-Efficiency DC-DC Converter
- Up to 3A Output Current
- 2.7V to 5.5V Operating Supply Voltage
- Resistor-Adjustable or Factory-Preset Output Voltage
- Synchronizable, 2.2MHz Switching-Frequency Enable Input
- Active-Low RESET Output
- Spread-Spectrum Enable Input
- Forced-PWM and Skip Modes
- Current-Mode Architecture
- 3mm × 3mm × 0.85mm 10-Pin TDFN
- High Precision
- 107% Overvoltage Monitor
- 93% Undervoltage Monitor
- ±1.5% Output-Voltage Accuracy
- Excellent Load Transient Performance
- Overtemperature and Short-Circuit Protection
- -40°C to +125°C Operating Temperature Range
Applications/Uses
- Automotive
- Point-of-Load
Description
The devices feature fixed-frequency PWM mode of operation, with a 2.2MHz switching frequency. High-frequency operation enables an all-ceramic capacitor design and small external components.
The low-resistance on-chip switches ensure high efficiency at heavy loads while minimizing critical inductances, making the layout a much simpler task with respect to discrete solutions. Following a simple layout and footprint ensures first-pass success in new designs.
The devices provide an enable input, spread-spectrum enable input, and active-low RESET output. The output voltage can be preset at the factory to allow customers to achieve ±1.5% output-voltage accuracy without using expensive 0.1% external resistors. In addition, the output voltage can be set to any customer value by using two external resistors at the feedback with 0.5V internal reference. The device offers a fixed 0.85ms soft-start time.
The 10-pin TDFN exposed pad devices include overtemperature shutdown and overcurrent limiting. All devices are designed to operate over the -40°C to +125°C ambient temperature range.
Design Solution: Why Automotive ECUs Need a High-Performance POL Converter ›
Technical Docs
| Data Sheet | Single 2A/3A 2.2MHz Low-Voltage Step-Down DC-DC Converters | Apr 01, 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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