TL2844D-8

Frequency - Switching:	Up to 500kHz
Base Part Number:	TL2844
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	48%
Series:	--
Voltage - Supply (Vcc/Vdd):	10 V ~ 30 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Flyback, Forward
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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TL2844D-8: DC DC Switching Controllers

Power Management Integrated Circuits (PMICs) are versatile building blocks used in almost every electronic system. PMICs allow for effective and efficient power conversion, which is why PMICs have become a popular product class in the electronics industry. One type of PMIC is a voltage regulator. Voltage regulators have become increasingly popular due to their ability to maintain a stable output in various operating conditions. A DC DC Switching Controller is a specific type of voltage regulator that is commonly used in high-power systems, as it is particularly beneficial for applications that require high-power conversion or significant voltage changes.The TL2844D-8 is a small, feature-rich DC DC switching controller that is capable of providing numerous features, benefits, and operations. This small IC is available in tiny packages, making it the perfect solution for applications that require high power efficiency and a compact form factor.

Key Features

The TL2844D-8 offers a robust feature set for a variety of voltage regulation applications. Some of its key features are described below:* Output voltage range: The TL2844D-8 can be used to convert up to 18 volts to 3.3V, 4.2V and 5V. * On-chip synchronization: Using an external clock input, the TL2844D-8 can be synchronized to achieve very high efficiencies in wide operating ranges.* Soft-start: The soft-start function reduces inrush current during start-up and helps reduce voltage droops and spikes.* Status monitor: The TL2844D-8 provides a status monitor and fault detection for overcurrent and overvoltage protection.* Over-temperature protection: The IC provides a temperature alert warning for the user to take any necessary action.

Application Fields

The TL2844D-8 is a versatile and efficient DC to DC switching controller that is suitable for a wide range of applications. It is suitable for high-power applications that require voltage regulation, such as notebook computer, set-top boxes, LCD/LED displays, telecom switches, and industrial systems. The TL2844D-8 also has many features that make it suitable for low-power applications, such as motor control, robotics, medical equipment, consumer electronics, and portable measurement systems.

Working Principle

The TL2844D-8 is a voltage regulator that works by using an on-chip MOSFET to control the output current. The switch is controlled by a pulse-width modulation (PWM) signal generated by the on-chip PWM logic circuit. By changing the duty cycle of the PWM signal, the output current and voltage are regulated. The output voltage can be adjusted by changing the value of an external voltage reference, which is connected to the reference input. The output voltage is also monitored via an on-chip voltage feedback loop, which allows the TL2844D-8 to adjust its output automatically if the output voltage exceeds the preset threshold.The TL2844D-8 also features a slew rate control circuit, which enables it to ramp up and down the output voltage efficiently and smoothly. The on-chip synchronization circuitry allows the TL2844D-8 to operate in frequency synchronization mode, which helps improve efficiency in high-power applications. The TL2844D-8 can also be used in constant current or constant voltage mode. In constant current mode, the TL2844D-8 will regulate the output current automatically, while in constant voltage mode, the output voltage will remain constant even when the input voltage changes. The TL2844D-8 also provides various protection functions, such as over-voltage, over-current, short-circuit and over-temperature protection.

Conclusion

The TL2844D-8 is a versatile and efficient DC to DC switching controller that can be used for a wide range of applications, from high-power applications to low-power applications. Its on-chip features make it a great choice for applications that require reliable voltage regulation and efficient power conversion. It is capable of providing many features, such as on-chip synchronization, soft-start, status monitor, and over-temperature protection, making it an ideal choice for those looking for a reliable and efficient PMIC.

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