NCP1532: Buck Converter, DC-DC, Dual, Low Iq, High Efficiency, 2.25 MHz, 1.6 A

Description: The NCP1532 dual step down DCDC converter is a mon...
  • The NCP1532 dual step down DCDC converter is a monolithic integrated circuit dedicated to supply core and I/O voltages of new multimedia design in portable applications powered from 1-cell Li-ion or 3 cell Alkaline/NiCd/NiMH batteries. Both channels are externally adjustable from 0.9V to 3.3V and can source totally up to 1.6A, 1.0A maximum per channel. Converters are running at 2.25MHz switching frequency which reduces component size by allowing the use of small inductor (down to 1uH) and capacitors and operates 180 degrees out of phase to reduce large amount of current demand on the battery. Automatic switching PWM/PFM mode and synchronous rectification offer improved system efficiency. The device can also operate into fixed frequency PWM mode for low noise applications where low ripple and good load transients are required. Additional features include integrated soft-start, cycle-by-cycle current limit and thermal shutdown protection. The device can also be synchronized to an external clock signal in the range of 2.25 MHz. The NCP1532 is available in a space saving, ultra low profile 3x3 x 0.55 mm 10 pin uDFN package.
  • Features
  • 97% efficiency, 50uA quiescent current, 0.3 uA shutdown current - Extends battery life and 'play-time'
  • 2.25MHz switching frequency - Allows use of smaller inductor and capacitor
  • Mode pin operation : Auto-switching PWM/PFM mode at light loading or PWM mode only - Allow user select between low power consumption at light loading or noise and ripple performance
  • Adjustable outputs voltage from 0.9V to 3.3V
  • POR on reset output pin
  • Can source up to 1.6A, 1.0A max per channel (800mA/800mA or 1.0A/600mA)
  • Applications
  • Power supply for application processor
  • Power supply for processor with low core voltage
  • End Products
  • Cellular phones, smart phones, and PDAs
  • MP3 players and portable audio systems
  • Technical Documentation & Design Resources
    Evaluation/Development Tool Information
    Product Change Notification
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Buck Converter, DC-DC, Dual, Low Iq, High Efficiency, 2.25 MHz, 1.6 A
  • Package Type: UDFN-10
  • Package Case Outline: 506AT
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):4 to 8
  • Arrow:0
  • Avnet:>1K
  • Digikey:>10K
  • Newark:>1K
  • PandS:>10K
  • Applications
  • Topology: Step-Down 
  • Control Mode: Current Mode 
  • VCC Min (V): 2.7 
  • VCC Max (V): 5.5 
  • VO Typ (V): 0.9 to 3.3 
  • IO Typ (A): 1.6 
  • Efficiency (%): 97 
  • fSW Typ (kHz): 2250 
  • Package Type: UDFN-10 
  • ON Semiconductor Full Web Site