Maxim Integrated MAX17760

Beschreibung

The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power supply solutions. The MAX17760 is a high-efficiency, high-voltage, Himalaya synchronous step-down DC-DC converter with integrated MOSFETs operating over an input-voltage range of 4.5V to 76V. The device can deliver up to 300mA current. Output voltage is programmable from 0.8V up to 88% of input voltage (VIN). Built-in control loop compensation eliminates the need for external components.The MAX17760 features a peak-current-mode control architecture. The device can be operated in either the forced pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes. Forced PWM mode provides constant frequency operation at all loads for frequency sensitive applications, while PFM mode provides superior light-load efficiency by skipping pulses. The device integrates an open drain RESET output voltage monitor, adjustable input undervoltage lockout (EN/UVLO) and programmable soft-start.The feedback voltage regulation accuracy over -40°C to +125°C is +1.6% to -1.7%. The MAX17760 is available in a compact 12-pin (3mm x 3mm) TDFN package. Simulation models are available.

Eigenschaften

Reduces External Components and Total Cost

• No Schottky—Synchronous Operation
• Internal Compensation Components
• All-Ceramic Capacitors, Compact Layout
• Reduces Number of DC-DC Regulators to Stock
• Wide 4.5V to 76V Input
• Adjustable Output Range from 0.8V up to 88% of VIN
• Up to 300mA Output Current
• 200kHz, 300kHz, 400kHz, and 600kHz Programmable Switching Frequency with External Clock Synchronization.
• Reduces Power Dissipation
• 93% Peak Efficiency
• PFM Mode Enables Enhanced Light-Load Efficiency
• EXTVCC Bootstrap Input for Improved Efficiency
• 5μA Shutdown Current
• Operates Reliably in Adverse Industrial Environments
• Built-in Hiccup Mode Overload Protection
• Programmable Soft-Start and Prebiased Power-up
• Built-in Output-Voltage Monitoring with RESET
• Programmable EN/UVLO Threshold
• Overtemperature Protection
• CISPR 22 Class B Compliant
• Wide -40°C to +125°C Ambient Operating Temperature Range/ -40°C to +150°C Junction Temperature Range

Typische Anwendungen

• Industrial Control Power Supplies, General Purpose Point-of-Load, Distributed Supply Regulation, Base Station Power Supplies, Wall Transformer Regulation, High Voltage Single-Board Systems

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers