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FAN5353MPX 数据表(PDF) 1 Page - Fairchild Semiconductor

部件名 FAN5353MPX
功能描述  3MHz, 3A Synchronous Buck Regulator
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

FAN5353MPX 数据表(HTML) 1 Page - Fairchild Semiconductor

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September 2010
© 2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5353 • Rev. 1.0.2
FAN5353
3MHz, 3A Synchronous Buck Regulator
Features
3MHz Fixed-Frequency Operation
Best-in-Class Load Transient
3A Output Current Capability
2.7V to 5.5V Input Voltage Range
Adjustable Output Voltage: 0.8V to VIN•0.9
Power Good Output
Internal Soft-Start
Input Under-Voltage Lockout (UVLO)
Thermal Shutdown and Overload Protection
12-lead 3x3.5mm MLP
Applications
Set-Top Box
Hard Disk Drive
Communications Cards
DSP Power
Description
The FAN5353 is a step-down switching voltage regulator that
delivers an adjustable output from an input voltage supply of
2.7V to 5.5V. Using a proprietary architecture with
synchronous rectification, the FAN5353 is capable of
delivering 3A at over 85% efficiency. The regulator operates
at a nominal fixed frequency of 3MHz, which reduces the
value of the external components to 470nH for the output
inductor and 10µF for the output capacitor. Additional output
capacitance can be added without affecting stability if tighter
regulation during transients is required. The regulator
includes an open-drain power good (PGOOD) signal that
pulls low when the output is not in regulation.
In shutdown mode, the supply current drops below 1µA,
reducing power consumption.
FAN5353 is available in a 12-lead 3x3.5mm MLP package.
PVIN
PVIN
VCC
EN
VOUT
FB
R2
PGND
PGND
SW
SW
C
OUT
C
IN1
R1
AGND
PGOOD
C
VCC
6
5
4
3
2
1
7
8
9
10
11
12
P1
(GND)
C
IN
Figure 1. Typical Application
Ordering Information
Part Number
Temp. Range
Package
Packing Method
FAN5353MPX
-40 to 85°C
MLP-12, 3x3.5mm
Tape and Reel


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