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

Datasheet: Dual, Output Step-Down Converter 2.25 MHz
Rev. 6 (388kB)
Product Overview
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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   Benefits
     
  • 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   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
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCP1532GEVB Active
Pb-free
Dual Step-Down DC-DC Converter Evaluation Board
Availability & Samples
Specifications
Application Diagram
Interactive Block Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1532MUAATXG Active
Pb-free
Halide free
NCP1532 UDFN-10 506AT 1 260 Tape and Reel 3000 $0.6667
Market Leadtime (weeks) : 17 to 20
PandS   (2020-09-14 00:00) : >10K

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
NCP1532MUAATXG  
 $0.6667 
Pb
H
 Active   
Step-Down
Current Mode
2.7
5.5
0.9 to 3.3
1.6
97
2250
UDFN-10
Case Outlines
506AT   
NCP1532: Buck Converter, DC-DC, Dual, Low Iq, High Efficiency, 2.25 MHz, 1.6 A
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Dual Step-Down DC-DC Converter Evaluation Board - NCP1532GEVB
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