FAN2564UC18X

Current - Output:	300mA
Base Part Number:	FAN2564
Supplier Device Package:	4-WLCSP (1.41x0.93)
Package / Case:	4-UFBGA, WLCSP
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Temperature, Short Circuit, Soft Start
Control Features:	Enable
PSRR:	60dB (1kHz)
Current - Supply (Max):	200µA
Current - Quiescent (Iq):	75µA
Series:	--
Voltage Dropout (Max):	0.16V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	3.6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The FAN2564UC18X is a two-phase sync buck PMIC linear voltage regulator from Fairchild Semi-conductor. It offers a complete power management solution for high efficiency, power sensitive systems. The built-in two-step regulator and pass transistors provide excellent accuracy and has a wide output range from 0.7V to 6.0V. With a wide input range up to 24V and output current up to 18A, the device is suitable for systems with varying loads and power saving requirements.

Application Field

This voltage regulator is primarily suited for wide range applications such as External Graphic Process Units (GPUs), gaming consoles, laptop and portable batteries, communications systems, and connected appliances, etc.The FAN2564UC18X PMIC provides a complete power management solution for highly power efficient systems. It allows for higher efficiency over a wide temperature range, from -40°C to +85°C.The device provides an output current capability of up to 18A, making it an ideal choice for higher power applications like external graphic processors. Another great benefit is its low output voltage ripple, which is less than 50mV in all operating conditions.Due to its small size, it is also suitable for space-constrained applications, such as mobile devices and battery powered systems.

Working Principle

The FAN2564UC18X is a two-phase sync buck linear voltage regulator with built-in pass transistors. It works by using a two-step regulator and pass transistors to regulate the output voltage of the device.The regulator consists of two stages, the first stage is a DC/DC converter, which reduces the input voltage to a set output voltage. The second stage is an analog regulator, which further regulates the output voltage.The analog regulator works by employing a feedback loop to adjust the output voltage. It monitors the output voltage and compares it to the reference voltage supplied from external circuitry. Based on the difference between the two voltage levels, it adjusts the internal pass transistors to keep the output voltage within the desired range.

Conclusion

The FAN2564UC18X PMIC from Fairchild Semi-conductor is a two-phase sync buck linear voltage regulator. It offers an excellent power management solution for high efficiency systems with an output current capability of up to 18A.Its wide input voltage range and low output voltage ripple makes it an ideal solution for space-constrained applications, such as mobile devices and battery powered systems. The built-in two-step regulator and pass transistors provide excellent accuracy and has a wide output range from 0.7V to 6.0V.

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