FAN2564UC13X

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):	1.3V
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Part Status:	Obsolete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

FAN2564UC13X is a high performance linear voltage regulator from Fairchild Semiconductor, which acts as an important part of the power management integrated circuit (PMIC). This device can be used in various applications, such as electronic equipment, computer system, power distribution, communications, and industrial control. It is available in a standard 18-Pin SO package and is rated for an operating temperature range of -40°C to 125°C.

Application Field

The FAN2564UC13X is suitable for wide variety of applications such as computers, telecommunications equipment, peripherals, electronic instruments, and industrial control. It offers various features which help in this regard. For example, it utilizes a fixed voltage logic-controlled outputs and enables flexible and simple transformer selection, giving it impressive efficiency.Some of the popular uses of FAN2564UC13X include in low-voltage DC servers, low-power computing systems, computer motherboards and CPU boards, embedded applications such as touchscreen systems, general purpose power supplies, and portable device chargers. It provides superior load regulation, transient load response, ripple rejection, and line regulation. Furthermore, the device has been designed so as to maximize output current capability with no thermal runaway.

Working Principle

FAN2564UC13X is a linear voltage regulator that is designed to keep the output voltage stable regardless of the changes in input voltage or the load. This voltage regulator has an error amplifier, a voltage reference, current limit, output voltage sense, and an output short-circuit protection circuit.When the device is powered on, the error amplifier monitors the output voltage. The control loop then adjusts the control signal in order to adjust the output power transistor and keep the output voltage at the desired value. Under normal operating conditions, the error amplifier will act as a comparison between the actual output voltage and the reference voltage. If the error amplifier detects any difference between the two, it will increase or decrease the output voltage, bringing it back to the desired output voltage.In order to obtain a high efficiency, the FAN2564UC13X employs a constant-on-time control scheme in order to reduce power loss. The switch portion of the device uses a self-driving, low-side transistor to automatically lower the on-time and further enhance power efficiency.

Conclusion

The FAN2564UC13X is a linear voltage regulator which is specifically designed to maintain an output voltage independent of the development in the load current or input voltage. This is done by using an error amplifier, which constantly monitors the output voltage and adjusts it to the desired value, as well as by using a constant-on-time control scheme in order to reduce power loss. With its high efficiency, broad operating temperature ranges, and applications in low-power device chargers and general-purpose power supplies, the FAN2564UC13X is an excellent choice for the power management engineer.

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