LT3055EMSE-3.3#TRPBF

Current - Output:	500mA
Base Part Number:	LT3055
Supplier Device Package:	16-MSOP-EP
Package / Case:	16-TFSOP (0.118", 3.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Current Limit, Enable, Power Good, Soft Start
PSRR:	70dB (120Hz)
Current - Supply (Max):	25mA
Current - Quiescent (Iq):	130µA
Series:	--
Voltage Dropout (Max):	0.59V @ 500mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	45V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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IntroductionLT3055EMSE-3.3#TRPBF is an integrated linear voltage regulator with 3.3V fixed output voltage and high output current capability. It solves the traditional design problems of space constraints and instability. This device is ideal for applications that require precision, low noise, low dropout, and thermal protection.Application Field1. Battery powered systemsIt has low quiescent current and is ideal for applications powered by a battery. It can also be used to reduce output voltage ripple and stabilize the system. It can supply medium to high current levels with a low dropout voltage.2. Computer-on-ModuleLT3055EMSE-3.3#TRPBF is used in Computer-on-Module applications to supply the power supply voltage. Its reset pin can be used to restart the system in case of a power failure. It has internal short-circuit protection and thermal overload protection.3. Automotive ElectronicsThe LT3055EMSE-3.3#TRPBF is used in automotive electronics systems to provide reliable, accurate and low noise power for electronic components. It has a wide input voltage range, making it suitable for all types of vehicular applications.Working PrincipleLT3055EMSE-3.3#TRPBF operates in two main modes. In Mode 1, the output voltage is regulated by an error amplifier and pass transistor combination. The output voltage is set using an external resistor divider. The circuit will provide very accurate voltage regulation under most operating conditions with precision within ±2%.In Mode 2, the output voltage is regulated by the current control circuit. The current control loop is used to eliminate the voltage regulation. This provides a more reliable and stable output voltage over a wider range of input voltages and temperature conditions.ConclusionLT3055EMSE-3.3#TRPBF is an integrated linear voltage regulator with 3.3V fixed output voltage and high output current capability. It is ideal for low quiescent current and precise, low noise, low dropout applications such as battery powered systems, computer-on-module and automotive electronics. The LT3055EMSE-3.3#TRPBF has two main modes of operation; error amplifier and pass transistor mode and current control mode. The device provides very accurate voltage regulation under most conditions and stability over a wide range of input voltages and temperature conditions.

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