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reference designNCP3170B

Onsemi NCP3170B

Synchronous PWM Switching Converter

Overview

TopologyBuck Converter
Input voltage4.5-18 V
Switching frequency900-1100 kHz
Output 10.8 V / 3 A
IC revision5

Description

The NCP3170 is a flexible synchronous PWM Switching Buck Regulator. The NCP3170 operates from 4.5 V to 18 V, sourcing up to 3 A and is capable of producing output voltages as low as 0.8 V. The NCP3170 also incorporates current mode control. To reduce the number of external components, a number of features are internally set including soft start, power good detection, and switching frequency.The NCP3170 is currently available in an SOIC−8 package.

Features

  • 4.5 V to 18 V Operating Input Voltage Range
  • 90 m High-Side, 25 m Low-Side Switch
  • FMEA Fault Tolerant During Pin Short Test
  • 3 A Continuous Output Current
  • Fixed 500 kHz and 1 MHz PWM Operation
  • Cycle-by-Cycle Current Monitoring
  • 1.5% Initial Output Accuracy
  • Internal 4.6 ms Soft-Start
  • Short-Circuit Protection
  • Turn on Into Pre-bias
  • Power Good Indication
  • Light Load Efficiency
  • Thermal Shutdown
  • These are Pb-Free Devices

Typical applications

  • Cable Modems
  • Point of Load DC/DC Converters
  • PCIe Graphics Cards
  • LCD Monitors and TVs
  • DVD/Blu−ray Drives and HDD
  • Telecom/Networking/Datacom Equipment
  • Set Top Boxes

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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744311330
SPECWE-HCI SMT Flat Wire High Current Inductor, 3.3 µH, 8.1 A

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance3.3 µH
Performance Rated Current8.1 A
Saturation Current @ 10%4.5 A
Saturation Current @ 30%11 A
DC Resistance17.2 mΩ
Self Resonant Frequency43 MHz
MaterialSuperflux 
Packaging Unit1000 
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