MAX17083
Low-Voltage, Internal Switch, Step-Down Regulator
Saves Price and Board Space—Internal 5A Step-Down Regulator
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Overview
Features and Benefits
- Fixed-Frequency, Current-Mode Controller
- 2.4V to 5.5V Input Range
- Internal 5A Step-Down Regulator
- Internal BST Switch
- Fault Protection: Undervoltage, Overvoltage, Thermal, Peak Current Limit
- Enable Input and Power-Good Output
- Voltage-Controlled Soft-Start
- High-Impedance Shutdown
- < 1µA (typ) Shutdown Current
Product Details
The MAX17083 is a fixed-frequency, current-mode, step-down regulator optimized for low-voltage, low-power applications. This regulator features dual internal n-channel MOSFET power switches for high efficiency and reduced component count. External Schottky diodes are not required. An integrated boost switch eliminates the need for an external boost diode. The internal 25mΩ low-side power MOSFET easily supports continuous load currents up to 5A. The MAX17083 produces an adjustable 0.75V to 2.7V output voltage from the system's 3.3V or 5V input supply.
This step-down regulator uses a peak current-mode control scheme to eliminate the additional external compensation required by voltage-mode architectures, providing an easy-to-implement architecture without sacrificing fast transient response. The MAX17083 provides peak current-limit protection and operates in light-load pulse-skipping mode to maintain high efficiency under light-load conditions.
Independent enable input and open-drain power-good output allow flexible system power sequencing. The voltage soft-start gradually ramps up the output voltage within a predictable time period, effectively limiting the inrush current. The MAX17083 features output undervoltage, output overvoltage, and thermal-fault protection.
The MAX17083 is available in a 24-pin 4mm x 4mm x 0.75mm TQFN package. The exposed backside pad improves thermal characteristics.
Applications
- Low-Power Architectures
- Netbook and Nettop PCs
- Notebook and Subnotebook Computers
- PDAs and Mobile Communicators
- Portable Gaming
- Ultra-Mobile PCs
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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)
Documentation & Resources
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MAX17083 Reliability Data1/12/2023PDF59K
Design 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.
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