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

Overview
Specifications
Packages
Applications
Datasheet: Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A
Rev. 5 (246.0kB)
»View Material Composition
»Product Change Notification (2)
Product Overview
Product Description
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   Benefits
     
  • 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   End Products
  • Battery powered applications power management
  • Power supply for processor with low core voltage
  • USB powered devices
  • Low Voltage DC rails power management
 
  • Cellular phones, smart phones, and PDAs
  • MP3 players and portable audio systems
Technical Documentation & Design Resources
Application Notes (3) Package Drawings (2)
Simulation Models (1) Evaluation Board Documents (10)
Data Sheets (1)  
Evaluation Board Information
Evaluation Board Status Compliance Short Description Action
NCP1529ASNT1GEVB Active
Pb-free
1 A High Efficiency Step-Down Converter Evaluation Board
NCP1529MUTBGEVB Active
Pb-free
1 A High Efficiency Step-Down Converter Evaluation Board
Avnet (2014-04-16) : 5
Mouser (2014-04-16) : 1
Digi-Key (2014-04-16) : 1
Avnet (2014-04-16) : 2
Mouser (2014-04-16) : 1
Digi-Key (2014-04-16) : 2
Availability and Samples
Product
Status
Compliance
Description
Package
MSL*
Container
Budgetary Price/Unit
Type
Case Outline
Type
Qty.
NCP1529ASNT1G Active
Pb-free
Halide free
Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A TSOP-5 / SOT-23-5 483 1 Tape and Reel 3000 $0.3333
NCP1529MU12TBG Active
Pb-free
Halide free
Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A UDFN-6 517AB 1 Tape and Reel 3000 $0.32
NCP1529MU135TBG Last Shipments
Pb-free
Halide free
Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A UDFN-6 517AB 1 Tape and Reel 3000  
NCP1529MUTBG Active
Pb-free
Halide free
Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A UDFN-6 517AB 1 Tape and Reel 3000 $0.32
Moisture Sensitivity level (MSL) for surface mount devices (lead free measured at 260°C reflow, non lead free at 235°C reflow)
Market Leadtime (weeks) :
Digi-Key   (2014-04-16 00:00) : >10K
Mouser   (2014-04-16 00:00) : >1K
Newark   (2014-04-16 00:00) : >1K
P&S   (2014-04-16 00:00) : >1K
Market Leadtime (weeks) :
Avnet   (2014-04-16 00:00) : >1K
Mouser   (2014-04-16 00:00) : >1K
ON Semiconductor   (2014-04-16 00:00) : 123,000
P&S   (2014-04-16 00:00) : >1K
Market Leadtime (weeks) :
Mouser   (2014-04-16 00:00) : <1K
Market Leadtime (weeks) :
Avnet   (2014-04-16 00:00) : >1K
Chip1Stop   (2014-04-16 00:00) : >1K
Digi-Key   (2014-04-16 00:00) : >1K
Mouser   (2014-04-16 00:00) : >1K
Newark   (2014-04-16 00:00) : <1K
P&S   (2014-04-16 00:00) : <1K
Datasheet: Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A
Rev. 5 (246.0kB)
»View Material Composition
»Product Change Notification (2)
Product Overview

Product Compliance Status Description Topology Control Mode VCC Min (V) VCC Max (V) VO Typ (V) IO Typ (A) Efficiency (%) fSW Typ (kHz) Package Type
 Pb-free 
 Halide free 
 Active     Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A   Step-Down   Current Mode   2.7   5.5   0.9 to 3.9   1   96   1700   TSOP-5 / SOT-23-5 
 Pb-free 
 Halide free 
 Active     Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A   Step-Down   Current Mode   2.7   5.5   1.2   1   86   1700   UDFN-6 
 Pb-free 
 Halide free 
 Active     Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A   Step-Down   Current Mode   2.7   5.5   0.9 to 3.9   1   96   1700   UDFN-6 
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