Analog Devices MAX17577 Product Info

• Reduces External Components and Total Cost
  • Synchronous Operation
  • All-Ceramic Capacitors, Compact Layout
  • Internal Loop Compensation
  • System Ground Referenced I/O Pins (EN/UVLO, Active-Low RESET)
• Flexibility to Support Multiple Rails in a System
  • Adjustable Output Voltage Range from -0.9V to -36V
  • Wide 4.5V to (60V - |V_OUT|) Input-Voltage Range
  • Up to 1A Output Current
  • 400kHz to 2.2MHz Adjustable Frequency with External Clock Synchronization
• Reduces Power Dissipation
  • 90.6% Peak Efficiency
  • DCM for Superior Light-Load Efficiency
  • 6.2µA Shutdown Current
• Operates Reliably in Adverse Industrial Environments
  • Hiccup-Mode Overload Protection
  • Adjustable Soft-Start
  • Monotonic Startup with Prebiased Output Voltage
  • Built-In Output-Voltage Monitoring with Active-Low RESET
  • Programmable EN/UVLO Threshold
  • Complies with CISPR 32 (EN55032) Class B Conducted and Radiated Emissions
  • Overtemperature Protection
  • Wide -40°C to +125°C Ambient Operating Temperature Range/ -40°C to +150° C Junction Temperature Range

The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power-supply solutions. The MAX17577 and MAX17578 are high-efficiency, high-voltage, inverting, Himalaya synchronous DC-DC converters with integrated MOSFETs and internal compensation. The devices generate output voltages (V_OUT) from -0.9V to -36V and can deliver up to 1A of load current from a wide 4.5V to (60V - |V_OUT|) input- voltage range.

The devices feature peak current-mode control architecture. The MAX17577 operates in continuous conduction mode (CCM) at all loads; thus, providing a constant frequency operation. The MAX17578 operates in discontinuous conduction mode (DCM) for superior efficiency at light loads. Low minimum on-time allows higher switching frequencies and small solution sizes. The devices allow the EN/UVLO, active-low RESET and RT/SYNC pins to be driven by signals that are referenced to system ground, eliminating the need for external-level shifter circuits. The feedback-voltage regulation accuracy is ±1.3% over a wide -40°C to +125°C temperature range. The devices are available in a compact 12-pin (3mm x 3mm) TDFN-EP package. Simulation models are available.

Applications

• Industrial Control Power Supply
• General-Purpose Point-of-Load
• Gate-Drive Circuits
• Motion Control
• Wall-Transformer Regulation
• High-Voltage, Single-Board System