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FAN5350 数据表(PDF) 1 Page - Fairchild Semiconductor

部件名 FAN5350
功能描述  3MHz, 600mA Step-Down DC-DC Converter in Chip-Scale and MLP Packaging
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

FAN5350 数据表(HTML) 1 Page - Fairchild Semiconductor

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June 2008
© 2007 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5350 Rev. 1.0.3
FAN5350
3MHz, 600mA Step-Down DC-DC Converter in
Chip-Scale and MLP Packaging
Features
3MHz Fixed-Frequency Operation
16µA Typical Quiescent Current
600mA Output Current Capability
2.7V to 5.5V Input Voltage Range
1.82V Fixed Output Voltage
Synchronous Operation
Power-Save Mode
Soft-Start Capability
Input Under-Voltage Lockout (UVLO)
Thermal Shutdown and Overload Protection
6-Lead 3 x 3mm MLP
5-Bump 1 x 1.37mm WLCSP
Applications
Cell Phones, Smart-Phones
Pocket PCs
WLAN DC-DC Converter Modules
PDA, DSC, PMP, and MP3 Players
Portable Hard Disk Drives
Description
The FAN5350 is a step-down switching voltage
regulator that delivers a fixed 1.82V from an input
voltage supply of 2.7V to 5.5V. Using a proprietary
architecture
with
synchronous
rectification,
the
FAN5350 is capable of delivering 600mA at over 90%
efficiency, while maintaining a very high efficiency of
over 80% at load currents as low as 1mA. The regulator
operates at a nominal fixed frequency of 3MHz at full
load, which reduces the value of the external
components to 1µH for the output inductor and 4.7µF
for the output capacitor.
At
moderate
and
light
loads,
pulse
frequency
modulation is used to operate the device in power-save
mode with a typical quiescent current of 16µA. Even
with such a low quiescent current, the part exhibits
excellent transient response during large load swings.
At higher loads, the system automatically switches to
fixed-frequency control, operating at 3MHz. In shutdown
mode, the supply current drops below 1µA, reducing
power consumption.
The FAN5350 is available in a 6-lead Molded Leadless
Package (MLP) and a 5-bump Wafer Level Chip Scale
Package (WLCSP).
Ordering Information
Part Number
Operating
Temperature Range
Package
Eco Status
Packing Method
FAN5350UCX
-40°C to 85°C
WLCSP-5 1x1.37mm
Green
Tape and Reel
FAN5350MPX
-40°C to 85°C
MLP-6 3 x 3mm
Green
Tape and Reel
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
Please refer to tape and reel specifications on www.fairchildsemi.com; http://www.fairchildsemi.com/packaging.


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类似说明 - FAN5350_08

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