UC2844BNG

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UC2844BNG

+BOM

IC REG CTRLR PWM CM 8-DIP

365 1일 품질 보증

7*24 영업 시간 서비스 보증

90-판매 후 1일 보증

정품 보증

사양

속성 가치
Part Status Active
Output Type Transistor Driver
Function Step-Up, Step-Up/Step-Down
Output Configuration Positive, Isolation Capable
Topology Boost, Flyback
Number of Outputs 1
Output Phases 1
Voltage - Supply (Vcc/Vdd) 10V ~ 36V
Frequency - Switching Up to 500kHz
Duty Cycle (Max) 48%
Synchronous Rectifier No
Clock Sync No
Control Features Frequency Control
Operating Temperature -25°C ~ 85°C (TA)
Mounting Type Through Hole
Package / Case 8-DIP (0.300", 7.62mm)
Supplier Device Package 8-PDIP
Base Product Number UC2844

개요

Description

The UC2844BNG is a high-performance integrated circuit designed for off-line and DC-DC converter applications. It is part of the UC2844 family and features a current-mode control architecture, which enhances stability and improves transient response. Key features include a wide operating voltage range, typically between 10V to 30V, and the ability to regulate output voltage in various configurations, such as flyback or boost converters.
The chip incorporates built-in functions such as peak current sensing, soft start, and a built-in oscillator for frequency control, making it suitable for efficient power management in applications like power supplies, battery chargers, and other energy conversion systems. The UC2844BNG is packaged in a compact 14-pin SOIC format, facilitating integration into space-constrained designs.
Its design also supports high efficiency, which is crucial for minimizing thermal management and increasing overall system reliability. Overall, the UC2844BNG is a versatile choice for engineers looking to implement robust power solutions.

Equivalent

Equivalent products to the UC2844BNG chip include the Texas Instruments UC2844, UC3844 series, and ON Semiconductor NCP1200. Other similar alternatives are the LTC-3780 from Analog Devices and the MAX1499 from Maxim Integrated. Always verify specific electrical characteristics and operational requirements to ensure compatibility.

Features

The UC2844BNG is a high-performance, current mode PWM controller designed for switch-mode power supplies. Key features include:
1. Voltage Range: Operates from a wide input voltage range of 10V to 30V.
2. Current Mode Control: Ensures stable operation and improved transient response.
3. Integrated Soft-Start: Reduces inrush current during startup, enhancing reliability.
4. High-Speed Operation: Capable of high-frequency switching, supporting efficient power conversion.
5. Built-in Deadtime Control: Minimizes cross-conduction losses in the output stage.
6. Overcurrent Protection: Offers cycle-by-cycle current limiting to protect against overloads.
7. Thermal Shutdown: Provides protection against overheating, ensuring safe operation.
8. Adjustable Frequency: The oscillator frequency can be set via an external resistor, allowing design flexibility.
9. Low Standby Power: Designed for efficiency, contributing to lower energy consumption in various applications.
These features make the UC2844BNG suitable for a range of applications, including power supplies for telecommunications, industrial systems, and consumer electronics.

Pinout

The UC2844BNG is a high-performance PWM (Pulse Width Modulation) controller used in power supply applications. It has a total of 8 pins, each serving specific functions:
1. Pin 1 (COMP) - Compensation pin for error amplifier.
2. Pin 2 (VFB) - Feedback voltage input for regulation.
3. Pin 3 (VREF) - Reference voltage output (5V).
4. Pin 4 (GND) - Ground connection.
5. Pin 5 (PWM) - Output to the power stage (drives the switching transistor).
6. Pin 6 (CSN) - Current sense negative input.
7. Pin 7 (CSP) - Current sense positive input.
8. Pin 8 (VCC) - Supply voltage input.
These pins enable the UC2844BNG to effectively control the voltage and current in switching power supplies, ensuring stable performance and efficiency.

Manufacturer

The UC2844BNG is manufactured by Texas Instruments (TI), a globally recognized technology company. Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits, primarily focusing on analog, digital signal processing, and embedded processing solutions.
Founded in 1930, TI has established itself as a leader in the electronics industry, providing innovative solutions for a wide range of applications, including automotive, industrial, communications, and consumer electronics. The company is known for its commitment to research and development, producing high-quality products that cater to various market needs.
The UC2844BNG is a high-performance, fixed-frequency current-mode PWM (Pulse Width Modulation) controller, utilized in power supply applications, including DC-DC converters and power management systems. TI aims to deliver reliable and efficient components that enable the development of advanced electronic systems.

Application

The UC2844BNG is a high-performance current mode controller primarily used in power conversion applications. Its key application areas include:
1. Switching Power Supplies: Ideal for designing DC-DC converters such as buck, boost, and flyback topologies.
2. Industrial Power Supplies: Utilized in systems requiring stable and efficient power management.
3. Telecommunications Equipment: Provides reliable power for networking and communication devices.
4. Consumer Electronics: Supports efficient power conversion in devices like chargers and adapters.
5. LED Drivers: Employed in circuits for driving LED lighting applications.
Its features, including programmable switching frequency and overcurrent protection, enhance versatility across these applications.

Package

The UC2844BNG is typically packaged in a 14-pin dual in-line package (DIP), specifically the N package type. It is designed for ease of mounting on circuit boards and offers robust performance for power management applications.