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UC3846N
+BOMIC REG CTRLR MULT TOPOLOGY 16DIP
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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 #UC3846N
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データシート UC3846N DataSheet
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パッケージ PDIP-16
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在庫状況5942
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 |
| Package / Case | Tube |
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| Output Configuration | Positive |
| Topology | Boost, Flyback, Forward Converter, 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 | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole |
概要
Description
The UC3846N is a versatile pulse width modulation (PWM) controller IC primarily used in switching power supply applications. It is part of the UC384x family and is designed for use in high-performance current-mode or voltage-mode control applications. The UC3846N integrates several features to improve the efficiency and performance of power supplies.
Key features of the UC3846N include dual outputs, suitable for driving push-pull or half-bridge configurations, and a wide operating frequency range. It provides accurate control through its error amplifier, adjustable dead time, and current limit functions. The device also includes under-voltage lockout (UVLO) to ensure that the power supply starts only when adequate voltage is available, improving system reliability.
The UC3846N typically operates with a supply voltage range from 8V to 40V. It is widely used in applications such as DC-DC converters, battery chargers, and other power management systems. Its compact design and robust functionality make it suitable for various industrial and consumer electronics applications requiring efficient power conversion solutions.
Key features of the UC3846N include dual outputs, suitable for driving push-pull or half-bridge configurations, and a wide operating frequency range. It provides accurate control through its error amplifier, adjustable dead time, and current limit functions. The device also includes under-voltage lockout (UVLO) to ensure that the power supply starts only when adequate voltage is available, improving system reliability.
The UC3846N typically operates with a supply voltage range from 8V to 40V. It is widely used in applications such as DC-DC converters, battery chargers, and other power management systems. Its compact design and robust functionality make it suitable for various industrial and consumer electronics applications requiring efficient power conversion solutions.
Equivalent
Equivalent products for the UC3846N chip, which is a pulse width modulation (PWM) controller, include:
1. TL494
2. SG3525
3. KA3525
4. LM3525
5. UC3525
6. MC34025
These alternatives offer similar functionalities, such as PWM control, and are often used in power supply and motor control applications. Always verify specifications to ensure compatibility with your specific requirements.
1. TL494
2. SG3525
3. KA3525
4. LM3525
5. UC3525
6. MC34025
These alternatives offer similar functionalities, such as PWM control, and are often used in power supply and motor control applications. Always verify specifications to ensure compatibility with your specific requirements.
Features
The UC3846N is a versatile PWM controller IC designed for efficient DC-DC conversion applications. Key features include:
1. Dual Output: Provides complementary outputs with dead-time control for driving push-pull or half-bridge topologies.
2. High-Performance: Suitable for high-frequency operations with fast rise and fall times.
3. Wide Supply Voltage Range: Operates from a wide input voltage range, enhancing utility in diverse applications.
4. Error Amplifier: Incorporates a high-gain, wide-bandwidth error amplifier for precise voltage regulation.
5. Current Sense Capability: Offers cycle-by-cycle current limiting with a built-in sense comparator.
6. Undervoltage Lockout: Ensures proper startup and shutdown sequences by monitoring input voltage levels.
7. Programmable Oscillator: Provides frequency flexibility with adjustable duty cycle via external timing components.
8. Soft-Start: Minimizes inrush current during startup, protecting circuit components.
9. Thermal Shutdown: Protects the IC from overheating by disabling outputs when excessive temperature is detected.
These features make the UC3846N suitable for switch-mode power supplies, motor control, and other power management applications.
1. Dual Output: Provides complementary outputs with dead-time control for driving push-pull or half-bridge topologies.
2. High-Performance: Suitable for high-frequency operations with fast rise and fall times.
3. Wide Supply Voltage Range: Operates from a wide input voltage range, enhancing utility in diverse applications.
4. Error Amplifier: Incorporates a high-gain, wide-bandwidth error amplifier for precise voltage regulation.
5. Current Sense Capability: Offers cycle-by-cycle current limiting with a built-in sense comparator.
6. Undervoltage Lockout: Ensures proper startup and shutdown sequences by monitoring input voltage levels.
7. Programmable Oscillator: Provides frequency flexibility with adjustable duty cycle via external timing components.
8. Soft-Start: Minimizes inrush current during startup, protecting circuit components.
9. Thermal Shutdown: Protects the IC from overheating by disabling outputs when excessive temperature is detected.
These features make the UC3846N suitable for switch-mode power supplies, motor control, and other power management applications.
Pinout
The UC3846N is a current mode PWM controller IC commonly used in power supply applications. It typically comes in a 16-pin Dual In-line Package (DIP).
Here are the main functions of the pins:
1. Pin 1: Compensation - For error amplifier.
2. Pin 2: Voltage Feedback - Input from the output voltage.
3. Pin 3: Current Sense - Monitors the output current.
4. Pin 4: RT - Timing resistor.
5. Pin 5: CT - Timing capacitor.
6. Pin 6: Ramp - For slope compensation.
7. Pin 7: Ground - Ground reference.
8. Pin 8: Output A - Drives the gate of a power MOSFET.
9. Pin 9: Output B - Drives the gate of a second power MOSFET.
10. Pin 10: VCC - Positive supply voltage.
11. Pin 11: Reference Output - Precision reference voltage output.
12. Pin 12: Soft Start - Controls the soft start.
13. Pin 13: Shutdown - Disables the output stages.
14. Pin 14: Error Amp Inverting Input.
15. Pin 15: Error Amp Non-inverting Input.
16. Pin 16: Sync - Used for synchronization.
The UC3846N is designed for current mode control and is widely used in power converters.
Here are the main functions of the pins:
1. Pin 1: Compensation - For error amplifier.
2. Pin 2: Voltage Feedback - Input from the output voltage.
3. Pin 3: Current Sense - Monitors the output current.
4. Pin 4: RT - Timing resistor.
5. Pin 5: CT - Timing capacitor.
6. Pin 6: Ramp - For slope compensation.
7. Pin 7: Ground - Ground reference.
8. Pin 8: Output A - Drives the gate of a power MOSFET.
9. Pin 9: Output B - Drives the gate of a second power MOSFET.
10. Pin 10: VCC - Positive supply voltage.
11. Pin 11: Reference Output - Precision reference voltage output.
12. Pin 12: Soft Start - Controls the soft start.
13. Pin 13: Shutdown - Disables the output stages.
14. Pin 14: Error Amp Inverting Input.
15. Pin 15: Error Amp Non-inverting Input.
16. Pin 16: Sync - Used for synchronization.
The UC3846N is designed for current mode control and is widely used in power converters.
Manufacturer
The UC3846N is manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and produces a wide range of electronic components, including integrated circuits and analog chips. TI is known for its innovations in various areas such as power management, signal processing, and embedded processing. The company serves various industries, including automotive, industrial, consumer electronics, and communications. TI is recognized for its commitment to quality, reliability, and innovation in the semiconductor industry.
Application
The UC3846N is a versatile PWM (Pulse Width Modulation) controller used primarily in power electronics. Its key application areas include:
1. Switched-Mode Power Supplies (SMPS): It is widely employed in SMPS design to regulate output voltage efficiently.
2. DC-DC Converters: The UC3846N is used in DC-DC conversion for improving power supply efficiency across various applications.
3. Motor Control: It can be used in controlling DC motors by managing the power delivery and speed.
4. Battery Chargers: It helps in designing efficient battery charging systems by precisely controlling the charge cycles.
5. Inverters: It is utilized in inverter circuits for renewable energy systems such as solar inverters to optimize power conversion.
These applications leverage its features like high-frequency operation, current-mode control, and dual output for push-pull configurations.
1. Switched-Mode Power Supplies (SMPS): It is widely employed in SMPS design to regulate output voltage efficiently.
2. DC-DC Converters: The UC3846N is used in DC-DC conversion for improving power supply efficiency across various applications.
3. Motor Control: It can be used in controlling DC motors by managing the power delivery and speed.
4. Battery Chargers: It helps in designing efficient battery charging systems by precisely controlling the charge cycles.
5. Inverters: It is utilized in inverter circuits for renewable energy systems such as solar inverters to optimize power conversion.
These applications leverage its features like high-frequency operation, current-mode control, and dual output for push-pull configurations.
Package
The UC3846N is a current mode PWM controller typically housed in a dual in-line package (DIP). This package type generally has a 16-pin configuration, which facilitates through-hole mounting on printed circuit boards.
