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NCP1521B: Buck Converter, DC-DC, 1.5 MHz, 600 mA

Datasheet: Buck Converter - DC-DC 1.5 MHz, 600 mA
Rev. 6 (192kB)
Product Overview
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The NCP1521B step-down PWM DC-DC converter is optimized for portable applications powered from one cell Li-ion or three cell Alkaline/NiCd/NiMH batteries. The part is available in adjustable output voltage versions ranging 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 1.5 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 NCP1521B is available in space saving, low profile TSOP5 and UDFN6 packages.
Features   Benefits
     
  • 96% efficiency, 30 uA quiescent current, 0.3 uA shutdown current
 
  • Extends battery life and 'play-time'
  • 1.5 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 3.3V
   
  • Best in class Low Ripple even in PFM mode
   
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
NCP1521BEVB Active
Step Down Converter Evaluation Board
Availability & Samples
Specifications
Case Outlines
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1521BSNT1G Active
Pb-free
Halide free
NCP1521B TSOP-5 / SOT-23-5 483 1 260 Tape and Reel 3000 $0.28
Market Leadtime (weeks) : 4 to 8
PandS   (2020-09-14 00:00) : >1K

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Control Mode
VCC Min (V)
VCC Max (V)
VO Typ (V)
IO Typ (A)
Efficiency (%)
fSW Typ (kHz)
Package Type
NCP1521BSNT1G  
 $0.28 
Pb
H
 Active   
Step-Down
Current Mode
2.7
5.5
0.9 to 3.3
0.6
96
1500
TSOP-5 / SOT-23-5
Case Outlines
483   
Packages
NCP1521B: Buck Converter, DC-DC, 1.5 MHz, 600 mA
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Featured Video
Step Down Converter Evaluation Board - NCP1521BEVB
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