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NCP1421: Boost Converter, Sync-Rect, PFM, DC-DC, 600 mA, with True-Cutoff and Ring-Killer

Datasheet: Boost Converter Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 600 mA
Rev. 7 (181kB)
Product Overview
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NCP1421 is a monolithic micropower high-frequency step-up switching converter IC specially designed for battery- operated hand-held electronic products up to 600 mA 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 reduces 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 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 typically only 8.5 μA. This device is available in the compact and low Micro8 package.
Features
 
  • High Efficiency:
    94% for 3.3 V Output at 200 mA from 2.0 V Input
    84% for 3.3 V Output at 500 mA from 2.5 V Input
  • High Switching Frequency, up to 1.2 MHz (Not Hitting Current Limit)
  • True-Cutoff Function Reduces Device Shutdown Current to typically 50nA
  • Anti-Ringing Ring-Killer for Discontinuous Conduction Mode
  • High Accuracy Reference Output, 1.2V 1 1.5%,
    can supply 2.5mA Loading Current when VOUT > 3.3V
  • Low Quiescent Current of 8.5 µA
  • Integrated Low-Battery Detector
  • Open Drain Low -Battery Detector Output
  • 1.0V Startup at No Load Guaranteed
  • Output Voltage from 1.5V to 5.0V Adjustable
  • 1.5 A Cycle-by-Cycle Current Limit
  • Multi-function Logic Controlled Shutdown Pin
  • On Chip Thermal Shutdown with Hysteresis
  • Output Current up to 600mA at VIN=2.5V and VOUT=3.3V
  • Housed in Space Saving and Low Profile Micro8 package
  • Pb-Free Package is Available
Applications
  • Personal Digital Assistants (PDA)
  • Camcorders and Digital Still Cameras
  • Handheld Digital Audio Products
  • Handheld Instruments
  • Conversion from one to two Alkaline, NiMH, NICd Battery Cells to 3.0-5.0V or one Lithium-ion cell to 5.0V
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
BB-GEVK Active
Pb-free
IoT Development Kit Base Board (with WiFi and LCD) Evaluation Board
NCP1421EVB Active
Up to 600 mA DC-DC Converter Evaluation Board
NCP1421LEDGEVB Active
Pb-free
Up to 600mA DC-DC Converter Evaluation Board
FutureElectronics (2020-08-19) : 2
Availability & Samples
Specifications
Case Outlines
Interactive Block Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1421DMR2G Active
Pb-free
Halide free
NCP1421 Micro8 846A-02 1 260 Tape and Reel 4000 $0.534
Market Leadtime (weeks) : Contact Factory
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
NCP1421DMR2G  
 $0.534 
Pb
H
 Active   
Step-Up
Current/Voltage Mode
1
5.5
1.5 to 5.0
0.6
Up to 94
Up to 1200
Micro8
Case Outlines
846A-02   
Packages
NCP1421: Boost Converter, Sync-Rect, PFM, DC-DC, 600 mA, with True-Cutoff and Ring-Killer
Previously Viewed Products
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Featured Video
Up to 600 mA DC-DC Converter Evaluation Board - NCP1421EVB
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