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 (9)
Data Sheets (1)  
Evaluation/Development Tool Information
Product 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 (2014-10-21) : 5
Mouser (2014-10-21) : 1
Digi-Key (2014-10-21) : 1
Avnet (2014-10-21) : 2
Mouser (2014-10-21) : 1
Digi-Key (2014-10-21) : 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) :
Arrow   (2014-11-28 11:06) : 2995
Avnet   (2014-10-21 00:00) : >10K
Digi-Key   (2014-10-21 00:00) : >1K
Mouser   (2014-10-21 00:00) : <1K
P&S   (2014-10-21 00:00) : >1K
Market Leadtime (weeks) :
Avnet   (2014-10-21 00:00) : >1K
Mouser   (2014-10-21 00:00) : >1K
ON Semiconductor   (2014-11-26 00:00) : 99,000
P&S   (2014-10-21 00:00) : >1K
Market Leadtime (weeks) :
Mouser   (2014-10-21 00:00) : <1K
Market Leadtime (weeks) :
Arrow   (2014-11-28 11:06) : 3000
Avnet   (2014-10-21 00:00) : >1K
Chip1Stop   (2014-10-21 00:00) : >1K
Digi-Key   (2014-10-21 00:00) : >10K
Future Electronics   (2014-10-21 00:00) : >1K
Mouser   (2014-10-21 00:00) : >1K
P&S   (2014-10-21 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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