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NCP1421: 升压转换器,同步整流,PFM,DC-DC,600 mA,带真切断和振荡消除器

Datasheet: Boost Converter Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 600 mA
Rev. 7 (181kB)
产品概览
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NCP1421 是一款单片微功率高频步升开关转换器集成电路,专门设计用于负载高达 600 mA 的电池供电手持电子产品。它集成了同步整流,从而提高能效,且无需外部肖特基二极管。高开关频率(可达 1.2 MHz)支持使用薄型、小尺寸的电感器和输出电容。禁用此器件时,LX 或 BAT 到 OUT 的内部传导路径完全阻断,OUT 引脚与电池隔离。真切断功能降低了关断电流,通常只有 50nA。还集成了振荡消除器,以消除非连续传导模式下的高频振铃。此外,电池电量低检测器、逻辑控制关断、逐周期电流限制和高温关断为各种电池供电应用提供了增值功能。上述功能全部打开时,静态电源电流通常仅为 8.5μA。此器件采用紧凑小巧的 Micro8 封装。
特性
 
  • 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
应用
  • 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
评估/开发工具信息
产品 状况 Compliance 简短说明 行动
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
外形
Interactive Block Diagram
产品
状况
Compliance
具体说明
封装
MSL
容器
预算价格 (1千个数量的单价)
类型
外形
类型
Temperature
类型
数量
NCP1421DMR2G Active
Pb-free
Halide free
NCP1421 Micro8 846A-02 1 260 Tape and Reel 4000 $0.534
市场订货至交货的时间(周) : 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
外形
846A-02   
封装
NCP1421: 升压转换器,同步整流,PFM,DC-DC,600 mA,带真切断和振荡消除器
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