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Switching Regulators 
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MAX17024
Single Quick-PWM Step-Down Controller with Dynamic REFIN
High Efficiency, Excellent Transient Response, and High DC-Output Accuracy Needed for Stepping Down High Voltages
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Key Features
Applications/Uses
Parametric specs for Step-Down Switching Regulators
| VIN (V) (min) | 2 |
| VIN (V) (max) | 26 |
| VOUT1 (V) (min) | 0 |
| VOUT1 (V) (max) | 23 |
| IOUT1 (A) (max) | 10 |
| Switch Type | External |
| Output Adjust. Method | Dyn. REF In Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 600 |
| Package/Pins | TDFN/14 |
| Budgetary Price (See Notes) | 1.52 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | Single Quick-PWM Step-Down Controller with Dynamic REFIN | Sep 12, 2019 |
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
Parametric specs for Step-Down Switching Regulators
| VIN (V) (min) | 2 |
| VIN (V) (max) | 26 |
| VOUT1 (V) (min) | 0 |
| VOUT1 (V) (max) | 23 |
| IOUT1 (A) (max) | 10 |
| Switch Type | External |
| Output Adjust. Method | Dyn. REF In Resistor |
| Synchronous Switching? | Yes |
| Power Good Signal | Yes |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 600 |
| Package/Pins | TDFN/14 |
| Budgetary Price (See Notes) | 1.52 |
Key Features
- Quick-PWM with Fast Transient Response
- Supports Any Output Capacitor
- No Compensation Required with Polymers/Tantalum
- Stable with Ceramic Output Capacitors Using External Compensation
- Precision 2V ±10mV Reference
- Dynamically Adjustable Output Voltage (0 to 0.9 x VIN Range)
- Feedback Input Regulates to 0 to 2V REFIN Voltage
- 0.5% VOUT Accuracy Over Line and Load
- 26V Maximum Input Voltage Rating
- Resistively Programmable Switching Frequency
- Undervoltage/Thermal Protection
- Voltage Soft-Start and Soft-Shutdown
- Monotonic Power-Up with Precharged Output
- Power-Good Window Comparator
Applications/Uses
- DDR Memory-VDDQ or VTT
- GPU Core Supply
- I/O and Chipset Supplies
- Notebook Computers
- Point-of-Load Applications
- Step-Down Power Supply
Description
The MAX17024 pulse-width modulation (PWM) controller provides high efficiency, excellent transient response, and high DC-output accuracy needed for stepping down high-voltage batteries to generate low-voltage core or chipset/RAM bias supplies in notebook computers. The output voltage can be controlled using the dynamic REFIN, which supports input voltages between 0 to 2V. The REFIN adjustability combined with a resistive voltage-divider on the feedback input allows the MAX17024 to be configured for any output voltage between 0 to 0.9 x VIN.
Maxim's proprietary Quick-PWM™ quick-response, constant-on-time PWM control scheme handles wide input/output voltage ratios (low-duty-cycle applications) with ease and provides 100ns "instant-on" response to load transients while maintaining a relatively constant switching frequency. Strong drivers allow the MAX17024 to efficiently drive large synchronous-rectifier MOSFETs.
The controller senses the current across the sense resistor series with the synchronous rectifier to achieve highly accurate valley current-limit protection.
The MAX17024 includes a voltage-controlled soft-start and soft-shutdown to limit the input surge current, provide a monotonic power-up (even into a precharged output), and provide a predictable power-up time. The controller also includes output undervoltage and thermal-fault protection.
The MAX17024 is available in a tiny 14-pin, 3mm x 3mm TDFN package. For space-constrained applications, refer to the MAX17016 single step-down with 26V internal MOSFETs capable of supporting 10A continuous load. The MAX17016 is available in a small 40-pin, 6mm x 6mm TQFN package.
Maxim's proprietary Quick-PWM™ quick-response, constant-on-time PWM control scheme handles wide input/output voltage ratios (low-duty-cycle applications) with ease and provides 100ns "instant-on" response to load transients while maintaining a relatively constant switching frequency. Strong drivers allow the MAX17024 to efficiently drive large synchronous-rectifier MOSFETs.
The controller senses the current across the sense resistor series with the synchronous rectifier to achieve highly accurate valley current-limit protection.
The MAX17024 includes a voltage-controlled soft-start and soft-shutdown to limit the input surge current, provide a monotonic power-up (even into a precharged output), and provide a predictable power-up time. The controller also includes output undervoltage and thermal-fault protection.
The MAX17024 is available in a tiny 14-pin, 3mm x 3mm TDFN package. For space-constrained applications, refer to the MAX17016 single step-down with 26V internal MOSFETs capable of supporting 10A continuous load. The MAX17016 is available in a small 40-pin, 6mm x 6mm TQFN package.
Technical Docs
| Data Sheet | Single Quick-PWM Step-Down Controller with Dynamic REFIN | Sep 12, 2019 |
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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