参数资料
型号: FAN5361UMP123X
厂商: FAIRCHILD SEMICONDUCTOR CORP
元件分类: 稳压器
英文描述: 1.25 A SWITCHING REGULATOR, 6600 kHz SWITCHING FREQ-MAX, PDSO6
封装: 2 X 2 MM, MO-229VCCC, UMLP-6
文件页数: 1/18页
文件大小: 1326K
代理商: FAN5361UMP123X
May 2011
2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5361 Rev. 1.1.1
FAN5361
6MHz,
6
00mA
/750mA
Synchronous
Buck
Regul
ator
FAN5361
6MHz, 600mA / 750mA Synchronous Buck Regulator
Features
6MHz Fixed-Frequency Operation
35A Typical Quiescent Current
Best-in-Class Load Transient Response
Best-in-Class Efficiency
600mA or 750mA Output Current Capability
2.3V to 5.5V Input Voltage Range
1.0 to 1.90V Fixed Output Voltage
Low Ripple Light-Load PFM Mode
Forced PWM and External Clock Synchronization
Internal Soft-Start
Input Under-Voltage Lockout (UVLO)
Thermal Shutdown and Overload Protection
6-bump WLCSP, 0.4mm Pitch
6-pin 2 x 2mm UMLP
Applications
Cell Phones, Smart Phones
Tablets, Netbooks
, Ultra-Mobile PCs
3G, LTE, WiMAX, WiBro
, and WiFi Data Cards
Gaming Devices, Digital CamerasDC/DC Micro Modules
Description
The FAN5361 is a 600mA or 750mA, step-down, switching
voltage regulator that delivers a fixed output from a 2.3V to
5.5V input voltage supply. Using a proprietary architecture
with synchronous rectification, the FAN5361 is capable of
delivering a peak efficiency of 92%, while maintaining
efficiency over 80% at load currents as low as 1mA.
The regulator operates at a nominal fixed frequency of
6MHz, which reduces the value of the external components
to 470nH for the output inductor and 4.7F for the output
capacitor. The PWM modulator can be synchronized to an
external frequency source.
At moderate and light loads, pulse frequency modulation is
used to operate the device in power-save mode with a
typical quiescent current of 35A. 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 6MHz. In shutdown mode, the supply current
drops below 1A, reducing power consumption. For
applications that require minimum ripple or fixed frequency,
PFM mode can be disabled using the MODE pin.
The FAN5361 is available in 6-bump, 0.4mm pitch, Wafer-
Level Chip-Scale Package (WLCSP) and a 6-lead 2 x 2mm
ultra-thin MLP package (UMLP).
Typical Applications
Figure 1. Typical Applications
All trademarks are the property of their respective owners.
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