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UC2846DWTR
+BOMIC REG CTRLR MULT TOP 16SOIC
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メーカーSTマイクロエレクトロニクス
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メーカー品番 #UC2846DWTR
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データシート UC2846DWTR DataSheet
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在庫状況2982
365 日間品質保証
7*24 日間の品質保証
90-時間単位のサービス保証
1日間のアフターサービス保証
仕様
| 属性 | 値 |
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| Output Configuration | Positive |
| Topology | Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull |
| Number of Outputs | 2 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 6.95V ~ 40V |
| Frequency - Switching | 500kHz |
| Duty Cycle (Max) | 50% |
| Synchronous Rectifier | Yes |
| Clock Sync | Yes |
| Control Features | Current Limit, Enable, Frequency Control, Soft Start |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 16-SOIC |
| Base Product Number | UC2846 |
概要
Description
The UC2846DWTR is a high-performance, fixed-frequency, current-mode PWM (Pulse Width Modulation) controller, primarily used in power supply applications like switched-mode power supplies (SMPS). It features a wide input voltage range and is designed for efficient operation in applications requiring low standby power and high efficiency.
Key features include a high-speed comparator, integrated soft start, and built-in protection mechanisms such as over-voltage and under-voltage lockout. The UC2846 operates with a frequency range of up to 500 kHz, enabling compact designs and improved transient response. Its current-mode feedback architecture allows for easy implementation of current limiting and loop compensation.
The IC is housed in a compact DIP package, making it suitable for space-constrained applications. It is ideal for applications including offline power supplies, battery chargers, and industrial power converters. Overall, the UC2846DWTR is a versatile and reliable choice for designers seeking to implement efficient power management solutions.
Key features include a high-speed comparator, integrated soft start, and built-in protection mechanisms such as over-voltage and under-voltage lockout. The UC2846 operates with a frequency range of up to 500 kHz, enabling compact designs and improved transient response. Its current-mode feedback architecture allows for easy implementation of current limiting and loop compensation.
The IC is housed in a compact DIP package, making it suitable for space-constrained applications. It is ideal for applications including offline power supplies, battery chargers, and industrial power converters. Overall, the UC2846DWTR is a versatile and reliable choice for designers seeking to implement efficient power management solutions.
Equivalent
The UC2846DWTR is a PWM controller used in power management applications. Equivalent products include the TL494, SG3525, UC3846, and LM3478. Each alternative may have different features or specifications, so it's essential to check datasheets for specific application compatibility.
Features
The UC2846DWTR is a high-performance PWM (Pulse Width Modulation) controller designed for switch-mode power supplies. Key features include:
1. Voltage Mode Control: Provides stable operation and easy compensation.
2. High Speed: Capable of switching frequencies up to 500 kHz.
3. Integrated Soft-Start: Reduces inrush current during startup.
4. Current Limit: Built-in current sensing for overcurrent protection.
5. Deadtime Control: Ensures efficient switching with reduced cross conduction.
6. Thermal Shutdown: Protects the device from overheating.
7. Programmable Dead Time: Allows fine-tuning of switching times.
8. Wide Supply Voltage Range: Operates from 8V to 30V, suitable for multiple applications.
9. Low Standby Current: Enhances efficiency during idle operation.
10. Extensive Application Use: Commonly used in DC-DC converters, power supplies, and industrial applications.
These features make the UC2846DWTR an ideal choice for efficient power management in various electronic devices.
1. Voltage Mode Control: Provides stable operation and easy compensation.
2. High Speed: Capable of switching frequencies up to 500 kHz.
3. Integrated Soft-Start: Reduces inrush current during startup.
4. Current Limit: Built-in current sensing for overcurrent protection.
5. Deadtime Control: Ensures efficient switching with reduced cross conduction.
6. Thermal Shutdown: Protects the device from overheating.
7. Programmable Dead Time: Allows fine-tuning of switching times.
8. Wide Supply Voltage Range: Operates from 8V to 30V, suitable for multiple applications.
9. Low Standby Current: Enhances efficiency during idle operation.
10. Extensive Application Use: Commonly used in DC-DC converters, power supplies, and industrial applications.
These features make the UC2846DWTR an ideal choice for efficient power management in various electronic devices.
Pinout
The UC2846DWTR is a fixed frequency current-mode control integrated circuit used for power supply applications. It features a 16-pin Dual In-line Package (DIP). The pinout and functions are as follows:
1. COMP - Compensation Network
2. VC - Control Voltage Input
3. VREF - Reference Voltage Output
4. GND - Ground
5. CS - Current Sense Input
6. RAMP - Ramp Signal Input
7. VCC - Supply Voltage Input
8. SW - Switch Output
9. ISENSE - Current Sense for Over-Current Protection
10. SS - Soft Start
11. FB - Feedback Input
12. PWM - PWM Output
13. DMC - Deadtime Control
14. RT - Timing Resistor Connection
15. COMP - Compensation Network
16. CT - Timing Capacitor Connection
This IC is designed for applications such as off-line converters, and it includes features for over-voltage protection, soft-start, and frequency modulation.
1. COMP - Compensation Network
2. VC - Control Voltage Input
3. VREF - Reference Voltage Output
4. GND - Ground
5. CS - Current Sense Input
6. RAMP - Ramp Signal Input
7. VCC - Supply Voltage Input
8. SW - Switch Output
9. ISENSE - Current Sense for Over-Current Protection
10. SS - Soft Start
11. FB - Feedback Input
12. PWM - PWM Output
13. DMC - Deadtime Control
14. RT - Timing Resistor Connection
15. COMP - Compensation Network
16. CT - Timing Capacitor Connection
This IC is designed for applications such as off-line converters, and it includes features for over-voltage protection, soft-start, and frequency modulation.
Manufacturer
The UC2846DWTR is manufactured by Texas Instruments (TI), a leading global semiconductor company. Founded in 1930 and headquartered in Dallas, Texas, Texas Instruments specializes in designing and manufacturing a broad range of analog and digital semiconductor solutions. The company is particularly renowned for its innovations in analog electronics, embedded processing, and digital signal processing.
Texas Instruments serves various markets, including automotive, industrial, communication, and personal electronics, providing products that enhance performance and efficiency in electronic systems. The UC2846 is a specific device within their family of integrated circuits, primarily used for power supply control applications such as switch-mode power supplies (SMPS).
TI is recognized for its commitment to research and development, consistently advancing semiconductor technology to meet the evolving needs of its customers. The company plays a significant role in shaping the electronics industry, contributing to advancements in various applications, from consumer gadgets to complex industrial systems.
Texas Instruments serves various markets, including automotive, industrial, communication, and personal electronics, providing products that enhance performance and efficiency in electronic systems. The UC2846 is a specific device within their family of integrated circuits, primarily used for power supply control applications such as switch-mode power supplies (SMPS).
TI is recognized for its commitment to research and development, consistently advancing semiconductor technology to meet the evolving needs of its customers. The company plays a significant role in shaping the electronics industry, contributing to advancements in various applications, from consumer gadgets to complex industrial systems.
Application
The UC2846DWTR is a high-performance, current-mode PWM controller primarily used in power supply applications. Its main application areas include:
1. Switching Power Supplies: It is utilized in AC-DC and DC-DC converters for efficient power conversion.
2. Battery Chargers: It helps regulate voltage and current for charging batteries safely.
3. LED Drivers: Employed in driving LED lighting systems with constant current control.
4. Power Management in Consumer Electronics: It is used in devices such as computers, televisions, and appliances to optimize power efficiency.
5. Industrial Power Supplies: Suitable for various industrial automation and control systems to ensure stable power delivery.
1. Switching Power Supplies: It is utilized in AC-DC and DC-DC converters for efficient power conversion.
2. Battery Chargers: It helps regulate voltage and current for charging batteries safely.
3. LED Drivers: Employed in driving LED lighting systems with constant current control.
4. Power Management in Consumer Electronics: It is used in devices such as computers, televisions, and appliances to optimize power efficiency.
5. Industrial Power Supplies: Suitable for various industrial automation and control systems to ensure stable power delivery.
Package
The UC2846DWTR is packaged in a dual-in-line chip (DIP) format, specifically a 20-pin surface-mount package (SOIC). This allows for easy mounting on circuit boards and efficient thermal performance in various applications.
