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NCP1423: Boost Converter, Sync-Rect, PFM, DC-DC, 400 mA, with True-Cutoff and Ring-Killer

Datasheet: Boost Converter Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 400 mA
Rev. 8 (234kB)
Product Overview
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NCP1423 is a monolithic micropower high frequency step-up switching converter IC specially designed for battery operated hand-held electronic products up to 400mA loading. It integrates Synchronous Rectifier for improving efficiency as well as eliminating the external Schottky Diode. High switching frequency (up to 600 KHz) allows low profile inductor and output capacitor being used. When the IC is disabled, internal conduction path from LX or BAT to OUT is blocked, OUT pin is isolated from the battery. This achieves True-Cutoff. Ring-Killer is also integrated to eliminate the high frequency ringing in discontinuous conduction mode. Low-Battery Detector, Cycle-by-Cycle Current Limit, Overvoltage-Protection and Thermal Shutdown provide value-added features for various battery operated application. With all these functions ON, the quiescent supply current is only 9.0uA. This device is available in compact Micro-10 package
Features
 
  • High Switching Frequency, up to 600 kHz
  • Low Quiescent Current of 9.0 uA
  • Low Battery Detector
  • 0.8 V Startup at No Load Guaranteed
  • Ring-Killer for Discontinuous Conduction Mode
  • Thermal Shutdown
  • 1.2 A Cycle by Cycle Current Limit
  • Output Current up to 400 mA @ VOUT = 3.3 V, 200 mA @ VOUT = 1.8 V
  • Overvoltage Protection
  • Low Profile and Minimum External Part
  • Open Drain Low-Battery Detector Output
  • Compact Micro-10 Package
  • Pb-Free Package is Available
Applications
  • Wireless Optical Mouse
  • Wireless Headsets
  • Internet Audio Players
  • Personal Digital Assistants (PDAs)
  • Handheld Instruments
  • Conversion from one/two NiMH or NiCd cells to 1.8 V / 3.3 V
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
NCP1423EVB Active
400 mA DC-DC 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.
NCP1423DMR2G Active
Pb-free
Halide free
NCP1423 Micro10 846B 1 260 Tape and Reel 4000 $0.5067
Market Leadtime (weeks) : 8 to 12
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
NCP1423DMR2G  
 $0.5067 
Pb
H
 Active   
Step-Up
Current/Voltage Mode
0.8
6
1.8 to 3.3
0.4
92
Up to 600
Micro10
Case Outlines
846B   
Packages
NCP1423: Boost Converter, Sync-Rect, PFM, DC-DC, 400 mA, with True-Cutoff and Ring-Killer
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Featured Video
400 mA DC-DC Converter Evaluation Board - NCP1423EVB
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