× Part NCP1522 is no longer available. This is a recommended replacement.

NCP1522B: Buck Converter, DC-DC, 3 MHz, 600 mA

Datasheet: Buck Converter - DC-DC 3 MHz, 600 mA
Rev. 1 (195kB)
Product Overview
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The NCP1522B step- down DC-DC converter is a monolithic integrated circuit optimized for portable applications powered from one cell Li- Ion or three cell Alkaline/NiCd/NiMH batteries. The part, available in adjustable output voltage versions ranging from 0.9 V to 3.3 V, is able to deliver up to 600 mA. It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built- in 3 MHz (nominal) oscillator which reduces component size by allowing smaller inductors 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 NCP1522B is available in a space saving, low profile TSOP5 and UDFN6 packages.
Features   Benefits
  • 94% efficiency, 50 uA quiescent current, 0.3 uA shutdown current
  • Extends battery life and 'play-time'
  • 3.0 MHz switching frequency
  • Allows use of smaller inductor (down to 1uH) 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 3.3V
Applications   End Products
  • Power supply for application processor
  • Power supply for processor with low core voltage
  • Cellular phones, smart phones, and PDAs
  • MP3 players and portable audio systems
  • Digital still cameras and video cameras
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCP1522BUGEVB Active
3.0 MHz, 600 mA Step-Down DC-DC Converter Evaluation Board
Budgetary Price/Unit
Case Outline
NCP1522BMUTBG Last Shipments
Halide free
NCP1522B UDFN-6 517AB 1 260 Tape and Reel 3000  
NCP1522BSNT1G Last Shipments
Halide free
NCP1522B TSOP-5 / SOT-23-5 483 1 260 Tape and Reel 3000  
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 48,000
PandS   (2020-09-14 00:00) : >1K
Case Outlines
517AB    483   
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3.0 MHz, 600 mA Step-Down DC-DC Converter Evaluation Board - NCP1522BUGEVB
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