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onsemi.
“Typical” parameters which may be provided in
onsemi
data sheets and/
or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application
by customer’s technical experts.
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does not convey any license under any of its intellectual property rights nor the rights of others.
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products are not designed, intended, or authorized
for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for
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NCP3120
Dual 2.0 A, Step-Down
DC/DC Switching Regulator
The NCP3120 is a dual buck converter designed for low voltage
applications requiring high efficiency. This device is capable of
producing an output voltage as low as 0.8 V. The NCP3120 provides
dual 2.0 A switching regulators with an adjustable 200 kHz
−
750 kHz
switching frequency. The switching frequency is set by an external
resistor. The NCP3120 also incorporates an auto−tracking and
sequencing feature. Protection features include cycle−by−cycle
current limit and undervoltage lockout (UVLO). The NCP3120 comes
in a 32−pin QFN package.
Features
http://onsemi.com
MARKING DIAGRAM
1
1
32
NCP3120
AWLYYWWG
G
•
•
•
•
•
•
•
•
•
•
•
Input Voltage Range from 4.5 V to 13.2 V
12 V
in
to 5.0 V
out
= 87% Efficiency Min @ 2.0 A
200−750 kHz Operation
Stable with Low ESR Ceramic Output Capacitor
0.8
±1.5%
FB Reference Voltage
External Soft−Start
Out of Phase Operation of OUT1 & OUT2
Auto−Tracking and Sequencing
Enable/Disable Capability
Hiccup Overload Protection
Low Shutdown Power (I
q
< 100
mA)
QFN32
CASE 488AM
NCP3120 = Specific Device Code
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 40 of this data sheet.
Typical Applications
•
Set−Top Boxes, Portable Applications, Networking and
中风发生时，一切都是以秒来计算的。延误治疗可能导致大脑重大损伤。伦敦大学医学院的一位博士Alistair McEwan已经获得行为医学研究所(Action Medical Research)的同意，为急救人员开发一种无线诊断系统来减少时间延误。感谢抗血栓药物，一些病人在病情发作的三个小时之内可以完全恢复。但出血也会导致中风。医生在治疗之前需要确定发病原因，因为不适当的服用抗血栓药物会加重损害。...[详细]
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