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UC3825DWTR
+StücklisteIC REG CTRLR MULT TOP 16SOIC
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HerstellerTexas Instruments
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Herstellerteil #UC3825DWTR
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Datenblatt UC3825DWTR DataSheet
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Auf Lager3956
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Spezifikationen
| Attribut | Wert |
| Part Status | Active |
| Base Product Number | UC3825 |
| Output Type | Transistor Driver |
| Function | Step-Up, Step-Down, Step-Up/Step-Down |
| Output Configuration | Positive |
| Topology | Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull |
| Number of Outputs | 2 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 8.4V ~ 30V |
| Frequency - Switching | 340kHz ~ 460kHz |
| Duty Cycle (Max) | 85% |
| Synchronous Rectifier | No |
| Clock Sync | No |
| Control Features | Current Limit, Enable, Frequency Control, Ramp, Soft Start |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 16-SOIC |
| Packaging | Cut Tape (CT), Tape & Reel (TR) |
Übersicht
Description
Key features of the UC3825DWTR include a high-speed oscillator capable of generating frequencies up to 1 MHz, leading and trailing-edge modulation, and a peak current mode operation. It provides integrated protection features such as undervoltage lockout, soft start, and overcurrent protection, enhancing the reliability of the power supply designs.
The UC3825DWTR comes in a surface-mount SOIC-16 package, making it suitable for compact designs. Its wide input voltage range and high output drive capability make it versatile for various applications, including telecommunications systems, industrial power supplies, and automotive electronics. Overall, it provides a reliable solution for demanding power management requirements.
Equivalent
1. UC3825: Non-surface mount variant.
2. LM3525: Similar PWM controller.
3. SG3525A: Another PWM controller with similar specifications.
4. UCC28251: Advanced controller with improved features.
5. TL494: General-purpose PWM controller with comparable performance.
It's important to cross-verify parameters like frequency, voltage, and package type to ensure compatibility.
Features
1. Wide Input Voltage Range: Operates over a broad range, enhancing versatility in various applications.
2. High-Speed Performance: Offers fast signal processing with a high oscillator frequency up to 1 MHz.
3. Soft-Start Capability: Gradually increases the duty cycle to prevent current surges during start-up.
4. Programmable Oscillator: Frequency can be adjusted using external resistors and capacitors.
5. Under-Voltage Lockout (UVLO): Ensures the device operates safely by preventing operation at low input voltages.
6. Current Limiting: Provides overcurrent protection by limiting the peak current.
7. Synchronization Capability: Allows synchronization with external signals for multi-phase operations.
8. Dual Output: Features two outputs that can be configured for various power supply topologies.
9. Thermal Shutdown: Protects the device from overheating by disabling output stages under excess temperature conditions.
10. Precision Reference: Offers a stable 5V reference voltage for enhanced accuracy.
These features make the UC3825DWTR suitable for efficient and reliable power management in switch-mode power supplies.
Pinout
1. Compensation (COMP): This pin is used for the error amplifier compensation.
2. Voltage Feedback (VFB): Input to the error amplifier.
3. Current Sense (CS): Input for current limiting.
4. RT (Timing Resistor): Sets the oscillator frequency.
5. CT (Timing Capacitor): Works with RT to set frequency.
6. Deadtime Control (DTC): Adjusts the dead time.
7. Soft Start (SS): Controls soft-start timing.
8. Ground (GND): Common ground reference.
9. Output A (OUTA): PWM output A.
10. Output B (OUTB): PWM output B.
11. Power Ground (PGND): Ground for the output drivers.
12. VCC: Power supply input.
13. VREF: Reference voltage output.
14. SYNC: Synchronization input/output.
15. Ramp (RAMP): Slope compensation input.
16. Shutdown (SD): Shuts down the PWM outputs.
This controller is often used in power supplies and converters for various applications due to its precision and configurability.
Manufacturer
Application
1. Switching Power Supplies: It manages power conversion efficiently in DC-DC and AC-DC converters.
2. Industrial Power Systems: Used in motor controllers and industrial power management systems.
3. Telecommunications: Supports power management in telecom infrastructure.
4. Automotive Electronics: Facilitates efficient power conversion in automotive applications.
5. Renewable Energy Systems: Used in solar inverters and battery chargers to optimize energy use.
Its features like high-speed operation, current limiting, and thermal shutdown make it suitable for applications demanding precision and reliability in power control.