LTC3204EDC-3.3#TRMPBF

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	LTC3204
Supplier Device Package:	6-DFN (2x2)
Package / Case:	6-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	1.2MHz
Current - Output:	50mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	4.5V
Voltage - Input (Min):	1.8V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Charge Pump
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The LTC3204EDC-3.3#TRMPBF is a member of the Polymer Multi-Output Buck Voltage Regulator series of integrated circuits (ICs) designed and produced by Linear Technology Corporation. It is one of the company’s DC-to-DC (DC-DC) switching regulators and provides 39V input voltage, 2.5A output current, 1V to 3.3V output voltage, and 3.3V is its dropout voltage. DC-DC switching regulators are switching regulators which incorporate a buck converter or other DC regulation circuit to convert power from a higher voltage DC voltage source to a lower voltage DC voltage. They are commonly used as a DC-DC converter in audio, telecom and computer power supply applications. The LTC3204EDC-3.3#TRMPBF is a highly integrated switching voltage regulator that combines a low dropout (LDO) linear regulator, a dual step-down buck converter, and a passive power management processor to provide multiple voltage rails needed for complex systems. It can provide the power needed for remote power management, low voltage circuits, high voltage gate drive circuits, LED display backlighting and USB power applications. Additionally, the LTC3204EDC-3.3#TRMPBF offers high efficiency, low EMI, low quiescent current, excellent line and load regulation, current protection, and over-voltage protection.The LTC3204EDC-3.3#TRMPBF is designed around a buck switching regulator, which is a switching device that uses an inductor to store and control the output voltage by modulating the on and off times of the switching transistor. The switching frequency is constant and is determined by a frequency setting resistor. The output voltage is regulated by modulating the duty cycle of the switched waveform, which is determined by an external feedback network. The output current of the switcher is determined by the amount of charge that is stored in the inductor and is regulated by a power switch current limit.The LTC3204EDC-3.3#TRMPBF has both a built-in LDO linear regulator and a dual step-down buck converter, each capable of providing voltages up to 3.3V. The LDO linear regulator is used to provide low-voltage rails like those used in microcontrollers and requires the use of the feedback resistor network. The dual step-down buck converter can be configured to provide higher voltage rails such as those needed for voltage gate drive and high voltage LED drivers and requires an external diode bridge rectifier. The switcher is designed to be current-limited, so that the output current will not exceed the value specified by the power switch current limit.In operation, the LTC3204EDC-3.3#TRMPBF switches from the LDO to the dual step-down buck converter and vice versa according to a duty cycle control signal. The duty cycle control signal is generated internally by the regulator and can be adjusted by an external resistor or the internal reference voltage. Also, the external feedback network is used to control the output voltage in both the LDO linear and dual step-down buck converters, and the buck voltage can be adjusted externally with a resistor divider.Apart from the voltage regulation and switching functions, the LTC3204EDC-3.3#TRMPBF also provides a wide range of integrated features and protection mechanisms. These include input undervoltage lockout, over-voltage protection, short circuit protection, and thermal shutdown. Additionally, it features current mode control for optimized loop stability, excellent transient performance, and low noise and EMI. The LTC3204EDC-3.3#TRMPBF is a versatile and reliable PMIC with a wide range of applications. It is suitable for a variety of industrial, audio, telecom, and computer power supplies, and can be used to provide multiple voltage rails for complex systems. The integrated power switch current limit and protection mechanisms make it a robust and reliable DC-DC converter.

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