UC2844BD1013TR Integrated Circuits (ICs) |
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Allicdata Part #: | 497-6138-2-ND |
Manufacturer Part#: |
UC2844BD1013TR |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | STMicroelectronics |
Short Description: | IC REG CTRLR BST FLYBK ISO 8SOIC |
More Detail: | Boost, Flyback Regulator Positive Output Step-Up, ... |
DataSheet: | UC2844BD1013TR Datasheet/PDF |
Quantity: | 2500 |
Specifications
Series: | -- |
Packaging: | Tape & Reel (TR) |
Part Status: | Active |
Output Type: | Transistor Driver |
Function: | Step-Up, Step-Up/Step-Down |
Output Configuration: | Positive |
Topology: | Boost, Flyback |
Number of Outputs: | 1 |
Output Phases: | 1 |
Voltage - Supply (Vcc/Vdd): | 10 V ~ 30 V |
Frequency - Switching: | Up to 500kHz |
Duty Cycle (Max): | 48% |
Synchronous Rectifier: | No |
Clock Sync: | No |
Serial Interfaces: | -- |
Control Features: | Frequency Control |
Operating Temperature: | -25°C ~ 85°C (TA) |
Package / Case: | 8-SOIC (0.154", 3.90mm Width) |
Supplier Device Package: | 8-SO |
Base Part Number: | UC2844B |
Description
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Introduction
UC2844BD1013TR is a strictly regulated current mode monolithic integrated PWM controller. It is designed to offer improved performance, greater design flexibility and lower cost than earlier versions using bipolar and MOSFET high voltage, low on resistance switches. It comes with an input voltage range of 4.5 V to 28 V, with 0.60A peak current switch capability, making it suitable for various kinds of DC to DC converter applications.Application Field
UC2844BD1013TR is commonly used in a wide range of DC to DC converter applications such as step up (buck boost, boost, flyback, forward, and non-isolated) and step down (buck, quasi-resonant, symmetric synchronous buck and low-side N-Channel) configurations. It can also be used in implemented in automotive and home appliance applications, medical or general portable equipment, and others. The chip can be applied in lighting control, DC motors and stepper drivers, DC battery chargers and other various DC to DC converters as well.Working Principle
The UC2844BD1013TR relies on an externally generated signal for switching the pass element on and off, in order to regulate the output voltage of the converter. The chip uses a current sense input to regulate the switching of the pass element, allowing for the undesired current peaks that can be caused by high load transients or supply voltage transients. The chip also has an internal feedback loop, which regulates the output voltage and is used to determine when the pass element is to be switched on.The chip utilizes a series of transistors, diodes and resistors to set the high-side and low-side high voltages. It also bridges the two transistors in order to create an oscillating circuit that controls the switching of the pass element. It integrates a low-side high voltage protection circuit to regulate the current sensing signal by avoiding any output voltage overshoot. The feedback loop monitors the output voltage and compares it with a reference voltage that is set by an external resistor.Conclusion
The UC2844BD1013TR is a versatile and cost-effective integrated circuit for DC to DC converter applications. Its wide variety of features and improved performance make it suitable for many different applications. Its input voltage range and peak current capability are well suited for various DC to DC conversion needs, and its low-side high voltage protection enables it to be used safely in various kinds of industrial applications. Its robust and efficient design makes it an ideal choice for many types of voltage regulation.The specific data is subject to PDF, and the above content is for reference
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