Maxim Integrated MAX17501G

Beschreibung

The MAX17501 high-efficiency, high-voltage, synchro nous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input voltage range. It delivers output currents up to 500mA at output voltages of0.9V to 92%VIN . The output voltage is accurate to within ±1.7% over -40°C to +125°C. The MAX17501 is available in a compact TDFN package. Simulation models are available.The device features peak-current-mode control with pulse-width modulation (PWM). Users can choose devices with either pulse frequency modulation (PFM) or forced PWM scheme. PFM devices skip pulses at light load for higher efficiency, while forced-PWM devices operate with fixed switching frequency at any load for noise sensitive- applications. The low-resistance, on-chip MOSFETs ensure high efficiency at full load and simplify the layout.A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates anoutput enable/undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired inputvoltage level. An open-drain RESET pin provides a delayed power-good signal to the system upon achieving successful regulation of the output voltage.

Eigenschaften

• Eliminates External Components and Reduce Total Cost
• No Schottky-Synchronous Operation for High Efficiency and Reduced Cost
• Internal Compensation and Feedback Divider for 3.3V and 5V Outputs
• All-Ceramic Capacitors, Ultra-Compact Layout
• Reduces Number of DC-DC Regulators to Stock
• Wide 4.5V to 60V Input Voltage Range
• 0.9V to 92%VIN Output Voltage
• Delivers up to 500mA
• 600kHz and 300kHz Switching Frequency Options
• Available in a 10-Pin, 3mm x 2mm TDFN Package
• Reduces Power Dissipation
• Peak Efficiency > 90%
• PFM Feature for High Light-Load Efficiency
• Shutdown Current =0.9μA(typ)
• Operates Reliably in Adverse Industrial Environments
• Hiccup-Mode Current Limit, Sink Current Limit, and Autoretry Startup
• Built-In Output-Voltage Monitoring(Open-Drain RESET Pin)
• Resistor-Programmable EN/UVLO Threshold
• Adjustable Soft-Start and Prebiased Power-Up
• -40°C to+125°C Industrial Temperature Range

Typische Anwendungen

• HVACandBuildingControl
• Automotive
• Battery-PoweredEquipment
• General-PurposePoint-of-Load
• HomeTheatre
• BaseStation,VOIP,Telecom
• IndustrialProcessControl

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers