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UC2825DW
IC REG CTRLR MULT TOP 16SOIC
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- 製造商。 部分 #UC2825DW
- 包 SOIC (DW)-16
- 資料表 UC2825DW DataSheet
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規格
| Package | Tube |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull |
| NumberofOutputs | 2 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 8.4V ~ 30V |
| Frequency-Switching | 340kHz ~ 460kHz |
| DutyCycle(Max) | 80% |
| SynchronousRectifier | No |
| ClockSync | No |
| ControlFeatures | Current Limit, Enable, Frequency Control, Ramp, Soft Start |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 16-SOIC (0.295, 7.50mm Width) |
概述
Description
The UC2825DW is a high-performance pulse-width modulation (PWM) controller typically used in power electronics applications like DC-DC converters and power supplies. Developed by Texas Instruments, this device is part of the UC2825 series and is designed to offer precise control over power conversion processes. Key features of the UC2825DW include a wide supply voltage range, high-speed operation, and enhanced stability due to its advanced oscillator and PWM logic. It supports both current-mode and voltage-mode control schemes, making it versatile for different design needs.
The UC2825DW offers integrated protection features such as under-voltage lockout (UVLO) and soft-start capability, which help in enhancing the reliability and safety of power systems. The device is packaged in a 16-pin SOIC (Small Outline Integrated Circuit), making it suitable for compact circuit designs. Additionally, it includes features like frequency synchronization and an adjustable dead-time control, which optimize the performance and efficiency of power systems. Overall, the UC2825DW is a robust PWM controller suitable for applications requiring efficient and reliable power management.
The UC2825DW offers integrated protection features such as under-voltage lockout (UVLO) and soft-start capability, which help in enhancing the reliability and safety of power systems. The device is packaged in a 16-pin SOIC (Small Outline Integrated Circuit), making it suitable for compact circuit designs. Additionally, it includes features like frequency synchronization and an adjustable dead-time control, which optimize the performance and efficiency of power systems. Overall, the UC2825DW is a robust PWM controller suitable for applications requiring efficient and reliable power management.
Features
The UC2825DW is a high-performance pulse-width modulation (PWM) controller designed for efficient power management in various applications. Key features include:
1. High-Frequency Operation: Supports up to 1 MHz for fast switching applications.
2. Precision Voltage Reference: Offers a 5V reference with 1% accuracy, ensuring stable and reliable performance.
3. Wide Input Voltage Range: Operates over a broad range of 8V to 35V, suitable for various power sources.
4. Current Mode Control: Facilitates enhanced loop response and simplified loop compensation.
5. Programmable Dead-Time Control: Allows flexibility in controlling dead-time to optimize switching performance.
6. Soft-Start Capability: Ensures smooth power-up and reduces inrush current.
7. Under-Voltage Lockout (UVLO): Protects the system by ensuring the controller only operates when the supply voltage is sufficiently high.
8. Dual Output Configuration: Provides flexibility for driving multiple power stages or phases.
9. Thermal Shutdown: Protects the device from damage due to excessive temperatures.
These features make the UC2825DW suitable for use in DC/DC converters, power supplies, and other high-frequency PWM applications.
1. High-Frequency Operation: Supports up to 1 MHz for fast switching applications.
2. Precision Voltage Reference: Offers a 5V reference with 1% accuracy, ensuring stable and reliable performance.
3. Wide Input Voltage Range: Operates over a broad range of 8V to 35V, suitable for various power sources.
4. Current Mode Control: Facilitates enhanced loop response and simplified loop compensation.
5. Programmable Dead-Time Control: Allows flexibility in controlling dead-time to optimize switching performance.
6. Soft-Start Capability: Ensures smooth power-up and reduces inrush current.
7. Under-Voltage Lockout (UVLO): Protects the system by ensuring the controller only operates when the supply voltage is sufficiently high.
8. Dual Output Configuration: Provides flexibility for driving multiple power stages or phases.
9. Thermal Shutdown: Protects the device from damage due to excessive temperatures.
These features make the UC2825DW suitable for use in DC/DC converters, power supplies, and other high-frequency PWM applications.
Package
The UC2825DW is a high-speed PWM controller typically used in power supply applications. Its package type is SOIC-20 (Small Outline Integrated Circuit with 20 pins), which is a surface-mount package known for its compact design, aiding in space-constrained applications.
Pinout
The UC2825DW is a high-speed PWM controller designed for high-frequency, high-efficiency DC-DC converters. It is typically housed in a 16-pin SOIC (Small Outline Integrated Circuit) package. Here's a concise overview of its pin functions:
1. COMP: Error amplifier compensation.
2. VFB: Voltage feedback input, connects to the output voltage.
3. ILIM/SD: Current limit and shutdown input.
4. RAMP: Ramp input for slope compensation.
5. SS: Soft-start control.
6. RT/CT: Timing resistor and capacitor for oscillator frequency.
7. SYNC: Synchronization input.
8. VREF: Reference voltage output.
9. EA+: Non-inverting input to error amplifier.
10. EA-: Inverting input to error amplifier.
11. CS-: Inverting input for current sense.
12. CS+: Non-inverting input for current sense.
13. OUTA: Output A, high current to drive the gate of power MOSFET.
14. PGND: Power ground.
15. OUTB: Output B, high current for complementary control.
16. VCC: Supply voltage input.
These pins facilitate the configuration and control of the PWM controller for efficient power management in electronic devices.
1. COMP: Error amplifier compensation.
2. VFB: Voltage feedback input, connects to the output voltage.
3. ILIM/SD: Current limit and shutdown input.
4. RAMP: Ramp input for slope compensation.
5. SS: Soft-start control.
6. RT/CT: Timing resistor and capacitor for oscillator frequency.
7. SYNC: Synchronization input.
8. VREF: Reference voltage output.
9. EA+: Non-inverting input to error amplifier.
10. EA-: Inverting input to error amplifier.
11. CS-: Inverting input for current sense.
12. CS+: Non-inverting input for current sense.
13. OUTA: Output A, high current to drive the gate of power MOSFET.
14. PGND: Power ground.
15. OUTB: Output B, high current for complementary control.
16. VCC: Supply voltage input.
These pins facilitate the configuration and control of the PWM controller for efficient power management in electronic devices.
Manufacturer
The UC2825DW is a product manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and produces a variety of electronic components. Founded in 1930 and headquartered in Dallas, Texas, TI is known for its analog chips and embedded processors, which are used in a wide array of applications across industries like automotive, industrial, personal electronics, communications equipment, and more. The company focuses on innovation and technology development to optimize performance and power efficiency in electronics.
Application
The UC2825DW is a high-performance PWM controller used primarily in power electronics applications. Typical areas include switch-mode power supplies (SMPS), DC-DC converters, and motor control systems. It is ideal for applications requiring precise regulation and efficient energy conversion, such as telecommunications equipment, computer power supplies, and industrial control systems. The device's features like high-speed operation, programmable duty cycle, and current limiting make it suitable for demanding power management tasks.
Equivalent
The UC2825DW is a high-speed PWM controller from Texas Instruments. Equivalent or similar products include:
1. UC3825DW: A similar PWM controller with slight differences in voltage ratings and temperature range.
2. SG3525A: A PWM controller with similar functionality, though specs may vary.
3. TL494: A more general-purpose PWM controller with similar applications but different configurations.
4. LM3524D: Another PWM controller that can be used in similar applications.
Always verify the specific requirements and specifications for your application before choosing a substitute.
1. UC3825DW: A similar PWM controller with slight differences in voltage ratings and temperature range.
2. SG3525A: A PWM controller with similar functionality, though specs may vary.
3. TL494: A more general-purpose PWM controller with similar applications but different configurations.
4. LM3524D: Another PWM controller that can be used in similar applications.
Always verify the specific requirements and specifications for your application before choosing a substitute.
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