NCP3170 Datasheet PDF - ON Semiconductor
| Part Number | NCP3170 | |
| Description | Synchronous PWM Switching Converter | |
| Manufacturers | ON Semiconductor | |
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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
VIN
C1
22 mF
VIN L1 4.7 mH
VSW
EN
NCP3170
PG
3.3 V
R1
COMP
CC
AGND
FB1
PGND
C2, C3
22 mF
R2
RC
http://onsemi.com
SOIC−8 NB
CASE 751
MARKING DIAGRAM
8
3170x
ALYW
G
1
3170x
x
A
L
Y
W
G
= Specific Device Code
= A or B
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb-Free Package
PIN CONNECTIONS
PGND
VIN
AGND
FB
(Top View)
VSW
PG
EN
COMP
ORDERING INFORMATION
Device
Package
Shipping†
NCP3170ADR2G SOIC−8 2,500/Tape & Reel
(Pb−Free)
NCP3170BDR2G SOIC−8 2,500/Tape & Reel
(Pb−Free)
†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.
Figure 1. Typical Application Circuit
© Semiconductor Components Industries, LLC, 2014
September, 2014 − Rev. 5
1
Publication Order Number:
NCP3170/D
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NCP3170
TYPICAL PERFORMANCE CHARACTERISTICS
(Circuit from Figure 1, TA = 25°C, VIN = VEN = 12 V, VOUT = 3.3 V unless otherwise specified)
Figure 3. Light Load (DCM) Operation 1 ms/DIV
Figure 4. Full Load (CCM) Operation 1 ms/DIV
Figure 5. Start−Up into Full Load 1 ms/DIV
Figure 6. Short−Circuit Protection 200 ms /DIV
Figure 7. 50% to 100% Load Transient 100 ms/DIV
Figure 8. 3.3 V Turn on into 1 V Pre−Bias 1 ms /DIV
http://onsemi.com
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for NCP3170 electronic component. |
| Information | Total 26 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ NCP3170.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| NCP3170 | The function is Synchronous PWM Switching Converter. ON Semiconductor | |
| NCP3170ADR2G | The function is Synchronous PWM Switching Converter. ON Semiconductor | |
| NCP3170BDR2G | The function is Synchronous PWM Switching Converter. ON Semiconductor | |
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