MAX15023
PRODUCTIONWide 4.5V to 28V Input, Dual-Output Synchronous Buck Controller
Low-Cost, Dual DC-DC Controller Operates from 4.5V to 28V Suitable for Multiple Applications
- Part Models
- 4
- 1ku List Price
- Starting From $2.44
Overview
- 5.5V to 28V or 5V ±10% Input Supply Range
- 0.6V to (0.85 x VIN) Adjustable Outputs
- Adjustable 200kHz to 1MHz Switching Frequency
- Guaranteed Monotonic Startup into a Prebiased Load
- Lossless, Cycle-by-Cycle, Low-Side, Source Peak Current Limit with Adjustable, Temperature-Compensated Threshold
- Cycle-by-Cycle, Low-Side, Sink Peak Current-Limit Protection
- Proprietary Adaptive Internal Digital Soft-Start
- ±1% Accurate Voltage Reference
- Internal Boost Diodes
- Adaptive Synchronous Rectification Eliminates External Freewheeling Schottky Diodes
- Hiccup-Mode Short-Circuit Protection and Thermal Shutdown
- Power-Good Outputs and Analog Enable Inputs for Power Sequencing
The MAX15023 dual, synchronous step-down controller operates from a 5.5V to 28V or 5V ±10% input voltage range and generates two independent output voltages. Each output is adjustable from 85% of the input voltage down to 0.6V and supports loads of 12A or higher. Input voltage ripple and total RMS input ripple current are reduced by interleaved 180° out-of-phase operation.
The MAX15023 offers the ability to adjust the switching frequency from 200kHz to 1MHz with an external resistor. The MAX15023's adaptive synchronous rectification eliminates the need for external freewheeling Schottky diodes. The device also utilizes the external low-side MOSFET's on-resistance as a current-sense element, eliminating the need for a current-sense resistor. This protects the DC-DC components from damage during output overloaded conditions or output short-circuit faults without requiring a current-sense resistor. Hiccup-mode current limit reduces power dissipation during short-circuit conditions. The MAX15023 includes two independent power-good outputs and two independent enable inputs with precise turn-on/turn-off thresholds, which can be used for supply monitoring and for power sequencing.
Additional protection features include cycle-by-cycle, low-side, sink peak current limit, and thermal shutdown. Cycle-by-cycle, low-side, sink peak current limit prevents reverse inductor current from reaching dangerous levels when the device is sinking current from the output. The MAX15023 also allows prebiased startup without discharging the output and features adaptive internal digital soft-start. This new proprietary feature enables monotonic charging of externally large output capacitors at startup, and achieves good control of the peak inductor current during hiccup-mode short-circuit protection.
The MAX15023 is available in a space-saving and thermally enhanced 4mm x 4mm, 24-pin TQFN-EP package. The device operates over the -40°C to +85°C extended temperature range.
Applications
- DSP Power Supplies
- LCD TV Secondary Supplies
- Point-of-Load Regulators
- Power Modules
- Set-Top Boxes
- Switches/Routers
Documentation
Data Sheet 1
User Guide 1
Technical Articles 3
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX15023ETG+ | 24-TQFN-4X4X0.75 | ||
| MAX15023ETG+T | 24-TQFN-4X4X0.75 | ||
| MAX15023ETG/V+ | 24-TQFN-4X4X0.75 | ||
| MAX15023ETG/V+T | 24-TQFN-4X4X0.75 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Switching Regulators & Controllers 1 | ||
| MAX8546 | PRODUCTION | Low-Cost, Wide Input Range, Step-Down Controllers with Foldback Current Limit |
Tools & Simulations
ADI Power Studio™ Designer
ADI Power Studio™ Designer is the next-generation tool for IC-level, power supply design, guiding engineers to faster, validated solutions.
Learn MoreSIMPLIS Models 1
Evaluation Kits
Evaluation Kit for the MAX15023
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