Imagens apenas para referência
UC2844BNG
+Lista de MateriaisIC REG CTRLR PWM CM 8-DIP
-
Fabricanteonsemi
-
Peça do Fabricante #UC2844BNG
-
Ficha Técnica UC2844BNG DataSheet
-
Em Estoque700
365 Garantia de Qualidade em 1 dia
7*24 Garantia de serviço em 24 horas
90-Garantia de pós-venda em 1 dia
Garantia de Produto Genuíno
Especificações
| Atributo | Valor |
| 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 |
Visão Geral
Description
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
Features
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
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
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
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.