FAN53526UC84X Integrated Circuits (ICs)

Voltage - Input (Max):	5.5V
Supplier Device Package:	15-WLCSP (2.02x1.31)
Package / Case:	15-UFBGA, WLCSP
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	2.4MHz
Current - Output:	3A
Voltage - Output (Max):	1.125V
Voltage - Output (Min/Fixed):	1.125V
Series:	TinyBuck®
Voltage - Input (Min):	2.5V
Number of Outputs:	1
Output Type:	Programmable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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FAN53526UC84X application field and working principleFAN53526UC84X is a kind of DC/DC switching regulator in voltage regulators which focuses on low-voltage system form that can provide low surge input and low noise output. Its application field covers system motherboard, CPU core power supply, other core and PCI-EX port power supply etc. It is welcomed by many customers due to its advantages like low ripple, high efficiency, integrated fixed operation frequency PWM control and integrated EMI filter, etc.The working principle of FAN53526UC84X is based on the following aspects: First, the power supply is regulated by pulse width modulation (PWM). The switch inside the device will be turned on and off controled by a rectangular waveform with a high frequency. When the output voltage needs to be advanced, the voltage is opened, and conversely, the voltage is lowered, and the output voltage can be reduced. The length of time that the switch is kept closed is called "Duty Cycle", while "Period" is the total time of the PWM signal.Second, the current-limiting circuits are used in FAN53526UC84X, which can intelligently judge whether the load current is too large, and accurately detect the output current. When the overcurrent is detected, the switch is immediately stopped, and the load is protected during the process, thus improving the safety performance.Third, the overvoltage protection (OVP) of FAN53526UC84X can provide an overvoltage protection for the output voltage when the input voltage is much higher than the normal voltage.Forth, FAN53526UC84X can also provide undervoltage protection (UVP) which stops the output voltage signal going below the predefined lower voltage limit.Fifth, the temperature protection of FAN53526UC84X can detect the output temperature of the device, by using the temperature protection shutoff circuit within the device, when the temperature inside the device rises above a predetermined upper temperature limit, the circuit will be shut off to protect the device from possible damage.FAN53526UC84X is a high-reliability high-efficiency DC/DC switching regulator which high performance is used in a variety of applications. It only requires a few external components, has a simple control system, and is highly efficient and long life. The device can be applied to system motherboard, CPU core supply, other core and PCI-EX port power supply and other similar applications. It has already been appreciated by many customers due to its low noise, low output ripple, high efficiency and integrated EMI filter, etc.

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