Features and Benefits
- High-Integration Shrinks Solution Size
- Quad Step-Down DC-DC Converters with Integrated MOSFETs, Capable of Delivering 1.0A Each
- One 200mA LDO with Adjustable Output Voltage
- Hybrid Load-Line Architecture Enables Small Output Capacitors
- Performance Designed for Automotive Point-of-Load Regulation
- Operates from 3.0V to 5.5V Supply Voltage
- Individual Enable Signals for Each Output
- Soft-Start and Supply Sequencing Reduces Inrush Current
- Low-Noise Features Improve EMI Performance
- 3.2MHz Switching Frequency
- Forced-PWM Operation
- Two Channels 180 Degrees Out-of-Phase
- SYNC Input
- Robust for the Automotive Environment
- 28-Pin (4mm x 4mm x 0.8mm) TQFN-EP Package
- -40°C to +125°C Operating Temperature Range
- AEC-Q100 Qualified
The MAX20026/MAX20026S power-management ICs (PMICs) integrate four low-voltage, high-efficiency, step-down DC-DC converters and one low-noise LDO linear regulator. Each of the four step-down DC-DC converter outputs is factory set and can deliver up to 1.0A of current. The LDO linear regulator output is selectable to 2.5V or adjustable, and can deliver 200mA of current. The PMICs operate from 3.0V to 5.5V, making them ideal for automotive point-of- load and post-regulation applications.
The PMICs feature fixed-frequency PWM-mode operation with a switching frequency of 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 at heavy loads while minimizing critical inductances, making the layout a much simpler task with respect to discrete solutions. Internal current sensing and loop compensation reduce board space and system cost.
Two of the four buck converters operate 180 degrees out of phase with the internal clock. This feature reduces the necessary input capacitance and improves EMI as well. All four buck converters operate in constant-PWM mode outside the AM band. The PMICs offer a SYNC input to synchronize to an external clock. The PMICs provide individual enable inputs and one power-good output.
The PMICs provide individual enable inputs and one power-good output.
The PMICs offer several important protection features, including input overvoltage protection, input undervoltage monitoring, input undervoltage lockout, cycle-by-cycle current limiting, and overtemperature shutdown. The input undervoltage monitor indicates a brownout condition by driving PGOOD low when the input falls below the undervoltage monitoring (UVM) threshold.
The MAX20026/MAX20026S PMICs are available in a 28-pin TQFN package with an exposed pad and are specified for operation over the -40°C to +125°C automotive temperature range.
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The MAX20026 evaluation kit (EV kit) demonstrates the MAX20026/MAX20026S Automotive quad, low-voltage step-down DC-DC converters with low noise LDO.
The EV kit operates over an input range of 3V to 5.5V. DC-DC outputs 1-4 are factory set to 3.3V, 1.0V, 1.8V and 1.5V, respectively. The LDO output is set to 2.5V. Each DC-DC output can deliver up to 1A load, and the LDO can deliver up to 0.3A load.
Features & Benefits
- Complete Power Solution
- Quad Step-Down DC-DC Converters up to 1A Each
- 3V to 5.5V Input Supply Range
- Integrated Linear Regulator (LDO)
- Adjustable LDO Output Voltage
- Separate LDO Input to Increase Efficiency
- Individual Enables, One System Power Good
- 3.2MHz Switching Frequency Operation
- ±3% Output Voltage Accuracy
- Fully Assembled and Tested
Documentation & Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|MAX20026ATIA/V+||Material Declaration||Reliability Data||Thin Quad Flatpack, No Leads|
|MAX20026ATIA/V+T||Material Declaration||Reliability Data||Thin Quad Flatpack, No Leads|
|MAX20026ATIB/V+||Material Declaration||Reliability Data||Thin Quad Flatpack, No Leads|
|MAX20026ATIB/V+T||Material Declaration||Reliability Data||Thin Quad Flatpack, No Leads|
|MAX20026ATIC/V+||Material Declaration||Reliability Data||Thin Quad Flatpack, No Leads|
|MAX20026ATIC/V+T||Material Declaration||Reliability Data||Thin Quad Flatpack, No Leads|
|MAX20026ATID/V+||Material Declaration||Reliability Data||Thin Quad Flatpack, No Leads|
|MAX20026ATID/V+T||Material Declaration||Reliability Data||Thin Quad Flatpack, No Leads|
|Wafer Fabrication Data|
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.