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NCP3170BDR2G 数据手册 - ON Semiconductor（安森美）
制造商:
ON Semiconductor（安森美）
分类:
DC/DC转换器
封装:
SOIC-8
描述:
ON SEMICONDUCTOR NCP3170BDR2G 新
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NCP3170BDR2G数据手册
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© Semiconductor Components Industries, LLC, 2014
September, 2014 − Rev. 5
1 Publication Order Number:
NCP3170/D
NCP3170
Synchronous PWM
Switching Converter
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 mW High-Side, 25 mW 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
• Set Top Boxes
• DVD/Blu−rayt Drives and HDD
• LCD Monitors and TVs
• Cable Modems
• PCIe Graphics Cards
• Telecom/Networking/Datacom Equipment
• Point of Load DC/DC Converters
Figure 1. Typical Application Circuit
NCP3170
FB1
V
IN
3.3 V
EN
VIN
VSW
AGND
COMP
PG
PGND
R
C
R1
R2
L1 4.7 mH
C1
22 mF
C2, C3
22 mF
C
C
http://onsemi.com
SOIC−8 NB
CASE 751
MARKING DIAGRAM
3170x
ALYW
G
1
8
PIN CONNECTIONS
COMPFB
ENAGND
PGV
IN
V
SW
PGND
(Top View)
Device Package Shipping
†
ORDERING INFORMATION
NCP3170ADR2G SOIC−8
(Pb−Free)
2,500/Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
NCP3170BDR2G SOIC−8
(Pb−Free)
2,500/Tape & Reel
3170x = Specific Device Code
x = A or B
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb-Free Package
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