TL3577-ADJIKTTR Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	0V
Base Part Number:	TL3577
Supplier Device Package:	DDPAK/TO-263-5
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	100kHz
Current - Output:	3A (Switch)
Voltage - Output (Max):	60V
Series:	--
Voltage - Input (Max):	40V
Voltage - Input (Min):	3V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost, Flyback, Forward Converter, SEPIC
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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TL3577-ADJIKTTR is a Voltage Regulator IC of type DC DC Switching Regulators manufactured by Texas Instruments (TI). It is designed as an adjustable current, constant current switching regulator designed to provide direct conversion from a wide input voltage range to a constant current output. The Device can operate with input voltages ranging from 3.0 Volts (V) to 28 V and can regulate a maximum output current of 500 mA. It requires very little external circuitry and is ideal for applications requiring step-down from higher voltage sources to a lower, fixed current output.The TL3577-ADJIKTTR is a step-down switching regulator with a three terminal design that includes a feedback, enable, and ground pin. The device is turned on via an external EN pin and operates in a voltage mode control system. There is an internal reference voltage of 1.235V that is used by the device to provide a constant output current. Additionally, this reference voltage is used to provide fine current setting adjustments through external resistor settings. The device also has built in under-voltage lockout, thermal shutdown, reverse-current protection, and short circuit protection features. The TL3577-ADJIKTTR is designed to provide a constant current output with a high degree of accuracy and stability over temperature and input voltage variations. It can be used in a wide range of high-current applications such as a current regulator/limiters, motor control, LED lighting, and much more. The device has a wide operating temperature range of -40C to 125C and can operate with input frequencies up to 2MHz providing fast control loop responses. To and ensure the regulated current capability, the TL3577-ADJIKTTR requires a small inductor to provide soft-switching and to allow for continuous operating. Inductor selection is based on the output current requirements, the input voltage range, and the desired average output current. The inductor needs to be selected such that its resonant frequency is lower than the switching frequency to avoid any unwanted ripple appearing in the output current.In order to achieve a reliable control loop, the TL3577-ADJIKTTR device also requires an external feedback resistor selection. This resistor sets the maximum output current of the device and its selection ensures a stable operation. The feedback resistor also needs to be chosen carefully to accommodate the output current ripple as well as temperature variations.The TL3577-ADJIKTTR is also designed with an adjustable current limit feature which can be set by an external resistor divider. This feature allows users to set the maximum allowable output current, making the device suitable for over-current protection applications.In conclusion, the TL3577-ADJIKTTR is a versatile and feature-rich DC DC switching regulator IC from Texas Instruments. It can be used in a variety of high-current applications due to its wide input voltage range, adjustable output current, and reliable control loop. Its small size, low power consumption, wide temperature range and fast control loop response make the device an ideal solution for a variety of designs.

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