NCP1597: Synchronous Buck Converter, 1 MHz, 2.0 A

Description: The NCP1597A family is a fixed 1 MHz frequency, hi...
  • The NCP1597A family is a fixed 1 MHz frequency, high-output-current, synchronous PWM converter that integrate low-resistance, high-side P-channel MOSFETs and low-side N-channel MOSFETs. The NCP1597A utilizes current mode control to provide fast transient response and excellent loop stability and supports PFM mode at light load for higher efficiency. It regulates input voltages from 4.0 V to 5.5 V down to an output voltage as low as 0.8 V and is able to supply up to 2.0 A.

    The NCP1597A has features including fixed internally switching frequency (FSW), and an internal soft-start to limit inrush currents. Using the EN pin, shutdown supply current is reduced to 1 µA maximum.

    Other features include cycle-by-cycle current limiting; short-circuit protection, power saving mode and thermal shutdown. The NCP1597A is pin to pin compatible to the 1.5A NCP1595A. The NCP1597B offers the same performance in a 10-pin 3x3mm DFN package.
  • Features
  • Input voltage range from 4.0 V to 5.5 V - Typical +5V applications
  • Internal 140m / 90m MOSFETs - High efficiency at full load
  • Fixed 1 MHz Switching Frequency - Reduced output filter component size and value
  • Hiccup Mode Short-Circuit Protection - Reduced heat durring short circuit
  • Thermal Shutdown Protection - Prevents overheating in the application
  • Adjustable Output Voltage Down to 0.8 V - Ability to regulate low output voltages
  • PFM Mode at Light Load - Increased efficiency at light load versus fixed PWM
  • Applications
  • USB Powered Devices
  • Hard Disk Drive (HDD)
  • DSP Power
  • End Products
  • Set-Top-Box
  • Technical Documentation & Design Resources
    Evaluation/Development Tool Information
    Product Change Notification
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free 
  • Description: Synchronous Buck Converter, 1 MHz, 2.0 A
  • Package Type: DFN-6
  • Package Case Outline: 506AH
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):4 to 8
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  • Applications
  • Topology: Step-Down 
  • Control Mode: Current Mode 
  • VCC Min (V):
  • VCC Max (V): 5.5 
  • VO Typ (V): 0.8 to 4.95 
  • IO Typ (A):
  • Efficiency (%): 90 
  • fSW Typ (kHz): 1000 
  • Package Type: DFN-6 
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