NCP1529: Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A

Description: The NCP1529 step-down DC-DC converter is a monolit...
  • The NCP1529 step-down DC-DC converter is a monolithic integrated circuit for portable applications powered from one cell Li-ion or three cell Alkaline/NiCd/NiMH batteries. The device is able to deliver up to 1.0 A on an output range externally adjustable from 0.9 V to 3.9 V or fixed at 1.2 V or 1.35 V.
    It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built-in 1.7 MHz (nominal) oscillator which reduces component size by allowing a small inductor and capacitors. Automatic switching PWM/PFM mode offers improved system efficiency.
    Additional features include integrated soft-start, cycle-by-cycle current limiting and thermal shutdown protection. The NCP1529 is available in a space saving, low profile 2x2x0.5 mm UDFN6 package and TSOP-5 package.
  • Features
  • 96% efficiency, 28 uA quiescent current, 0.3 uA shutdown current - Extends battery life and 'play-time'
  • 1.7 MHz switching frequency - Allows use of smaller inductor and capacitor
  • Auto-switching between PWM and PFM mode at light load conditions - Low power consumption at light loading
  • Adjustable output voltage from 0.9V to 3.9V
  • Best in class Low Ripple even in PFM mode
  • Applications
  • Battery powered applications power management
  • Power supply for processor with low core voltage
  • USB powered devices
  • Low Voltage DC rails power management
  • 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
    NCP1529ASNT1G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A
  • Package Type: TSOP-5 / SOT-23-5
  • Package Case Outline: 483
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):Contact Factory
  • Arrow:0
  • Digikey:>1K
  • FutureElectronics:>1K
  • Mouser:>1K
  • Newark:>1K
  • PandS:>1K
  • NCP1529MU12TBG
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A
  • Package Type: UDFN-6
  • Package Case Outline: 517AB
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):8 to 12
  • Arrow:0
  • Mouser:>1K
  • PandS:>1K
  • NCP1529MUTBG
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A
  • Package Type: UDFN-6
  • Package Case Outline: 517AB
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):Contact Factory
  • Arrow:0
  • Digikey:>1K
  • Newark:<1K
  • PandS:<1K
  • Packages
    Applications
    Specifications
  • Topology: Step-Down 
  • Control Mode: Current Mode 
  • VCC Min (V): 2.7 
  • VCC Max (V): 5.5 
  • VO Typ (V): 0.9 to 3.9  1.2 
  • IO Typ (A):
  • Efficiency (%): 96  86 
  • fSW Typ (kHz): 1700 
  • Package Type: TSOP-5 / SOT-23-5  UDFN-6 
  • ON Semiconductor Full Web Site