To learn more about ON Semiconductor, please visit our website at
www.onsemi.com
Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers
will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor
product management systems do not have the ability to manage part nomenclature that utilizes an underscore
(_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain
device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated
device numbers. The most current and up-to-date ordering information can be found at
www.onsemi.com.
Please
email any questions regarding the system integration to
Fairchild_questions@onsemi.com.
ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right
to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON
Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON
Semiconductor 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. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor 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 implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended
or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out
of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor
is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
FAN5361 — 6 MHz, 600 mA / 750 mA Synchronous Buck Regulator
February 2016
FAN5361
6 MHz, 600 mA / 750 mA Synchronous Buck Regulator
Features
6 MHz Fixed-Frequency Operation
35 µA Typical Quiescent Current
Best-in-Class Load Transient Response
Best-in-Class Efficiency
600 mA or 750 mA Output Current Capability
2.3 V to 5.5 V Input Voltage Range
1.0 to 1.90 V 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, 0.4 mm Pitch
6-pin 2 x 2 mm UMLP
Description
The FAN5361 is a 600 mA or 750 mA, step-down, switching
voltage regulator that delivers a fixed output from a 2.3 V to
5.5 V 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 1 mA.
The regulator operates at a nominal fixed frequency of
6 MHz, which reduces the value of the external components
to 470 nH for the output inductor and 4.7 µF 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 35 µA. 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 6 MHz. In shutdown mode, the supply current
drops below 1 µA, 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, 0.4 mm pitch, Wafer-
Level Chip-Scale Package (WLCSP) and a 6-lead 2 x 2 mm
ultra-thin MLP package (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
®
®
®
Typical Applications
MODE
L1
470nH
FB
4.7F
C
OUT
SW
A1
B1
C1
A2
B2
C2
VIN
EN
GND
C
IN
2.2F
FB
C
OUT
4.7F
L1
SW
1
2
3
(AGND)
6
5
4
GND
EN
470nH
MODE
VIN
C
IN
2.2F
Figure 1. Typical Applications
All trademarks are the property of their respective owners.
京公网安备 11010802033920号
EEWORLD
