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NCP1422: Boost Converter, Sync-Rect, PFM, DC-DC, 800 mA, with True-Cutoff and Ring-Killer

Datasheet: Boost Converter Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 800 mA
Rev. 4 (180kB)
Product Overview
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NCP1422 is a monolithic micropower high frequency step-up switching converter IC specifically designed for battery-operated hand-held electronic products up to 800mA loading. It integrates Sync-Rect to improve efficiency and to eliminate the external Schottky Diode. High switching frequency (up to 1.2 MHz) allows for a low profile, small-sized inductor and output capacitor to be used. When the device is disabled, the internal conduction path from LX or BAT to OUT is fully blocked and the OUT pin is isolated from the battery. This True-Cutoff function reduce the shutdown current to typically only 50nA. Ring-Killer is also integrated to eliminate the high-frequency ringing in discontinuous conduction mode. In addition to the above, Low-Battery Detector, Logic-Controlled Shutdown, Cycle-by-Cycle Current Limit and Thermal Shutdown provide value-added features for various battery-operated applications. With all these functions ON, the quiescent supply current is typical only 8.5 uA. This device is available in compact and low profile DFN10 package.
Features
 
  • Output Current up to 800 mA at VIN = 2.5 V and VOUT = 3.3 V
  • High Switching Frequency, up to 1.2MHz
  • Anti-Ringing Ring-Killer for Discontinuous Conduction Mode
  • Low Quiescent Current of 8.5 µA
  • 1.0V Startup at No Load Guaranteed
  • Output Voltage from 1.5V to 5V Adjustable
  • 1.5A Cycle by Cycle Current Limit
  • On Chip Thermal Shutdown with Hysteresis
  • Housed in Space-Saving and Low Profile DFN10 package
  • Pb-Free Package is Available
Applications
  • Personal Digital Assistants (PDA)
  • Handheld Digital Audio Products
  • Camcorders and Digital Still Cameras
  • Conversion from one to two Alkaline, NiMH, NiCd battery cells to 3.0-5.0V or one Lithium-ion cells to 5.0V
  • While LED Flash for Digital Cameras
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCP1422GEVB Active
Pb-free
Up to 800 mA DC-DC Converter Evaluation Board
NCP1422LEDGEVB Active
Pb-free
High Current LED Driver Evaluation Board
Availability & Samples
Specifications
Case Outlines
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1422MNR2G Active
Pb-free
Halide free
NCP1422 DFN-10 485C 1 260 Tape and Reel 3000 $0.5067
Market Leadtime (weeks) : 8 to 12
PandS   (2020-09-14 00:00) : >1K
FutureElectronics   (2020-08-19 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
NCP1422MNR2G  
 $0.5067 
Pb
H
 Active   
Step-Up
Current/Voltage Mode
1
5.5
1.5 to 5.0
0.8
Up to 94
Up to 1200
DFN-10
Case Outlines
485C   
Packages
NCP1422: Boost Converter, Sync-Rect, PFM, DC-DC, 800 mA, with True-Cutoff and Ring-Killer
Previously Viewed Products
Clear List

Featured Video
High Current LED Driver Evaluation Board - NCP1422LEDGEVB
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