升压转换器,同步整流,PFM,DC-DC,800 mA,带真切断和振荡消除器

Active

概览

NCP1422 是一款单片微功率高频步升开关转换器 IC,专门设计用于负载高达 800mA 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 8.5 μA。该器件采用紧凑、薄型 DFN10 封装。

  • 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

  • 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

Tools and Resources

Product services, tools and other useful resources related to NCP1422

产品列表

如需购买产品或样品,请先登录您的安森美账号。

搜寻

Close Search

产品:

1

分享

产品系列:

可订购器件:

1

产品

状态

CAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Topology

Control Mode

VCC Min (V)

VCC Max (V)

VO Typ (V)

IO Typ (A)

Efficiency (%)

fSW Typ (kHz)

Reference Price

NCP1422MNR2G

Active

CAD Model

Pb

A

H

P

DFN-10

1

260

REEL

3000

Y

Step-Up

Current/Voltage Mode

1

5.5

1.5 to 5.0

0.8

Up to 94

1200

$0.6127

More Details

Show More

1-25 of 25

Products per page

Jump to :

Product Support

如果你希望对这款安森美产品作进一步了解,欢迎点击下方提交表格联系我们的销售团队。