NCP1523B: Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, 3 MHz, 600 mA

Datasheet: Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, 3 MHz, 600 mA
Rev. 2 (494kB)
Product Overview
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The NCP1523 step-down PWM DC-DC converter is optimized for portable applications powered from 1-cell Li-ion or 3 cell Alkaline/NiCd/NiMH batteries. The device is available in an adjustable output voltage from 0.9 V to 3.3 V. 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 use of a small inductor and capacitors. NCP1523 is available in automatic switching PWM/PFM (NCP1523FCT2G) improving system efficiency and in PWM mode only (NCP1523BFCT2G) offering a very efficient load transient solution. Additional features include integrated soft-start, cycle-by-cycle current limiting and thermal shutdown protection. The NCP1523 is available in a space saving, 8 pin chip scale package.
Features   Benefits
  • Up to 93% Efficiency, 60 uA Quiescent Current, Shutdown Current Consumption of 0.3 A
  • Extends battery life and 'play-time'
  • Auto-switching between PWM and PFM mode at light load conditions (NCP1523FCT2G)
  • Low power consumption at light loading
  • PWM mode operation (NCP1523BFCT2G)
  • Very efficient load transient solution, low output voltage ripple at light load
  • 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
Technical Documentation & Design Resources
Data Sheets (1) Evaluation Board Documents (1)
Package Drawings (1)  
Budgetary Price/Unit
Case Outline
NCP1523BFCT2G Obsolete
Halide free
NCP1523B, 3 MHz, 600 mA, High-Efficiency, Adjustable Output Voltage Step-Down Converter Flip-Chip-8 766AE 1 0 Die Surf Tape and Reel 3000  
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : >1K
Case Outlines
NCP1523B: Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, 3 MHz, 600 mA
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