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UC2844AQD8R
+BOMIC CURR-MODE PWM CTLR 8-SOIC
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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 #UC2844AQD8R
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データシート UC2844AQD8R DataSheet
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在庫状況2929
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 |
| Series | UCx84xA |
| Part Status | Active |
| Base Product Number | UC2844 |
| Applications | PWM Controller |
| Voltage - Input | -0.3V ~ 6.3V |
| Voltage - Supply | 10V ~ 30V |
| Current - Supply | 11 mA |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| Packaging | Cut Tape (CT), Tape & Reel (TR) |
概要
Description
The device incorporates a voltage-mode control scheme, providing excellent transient response and stability. Key features include an internal reference voltage, adjustable output duty cycle, and programmable soft-start functionality, which helps to minimize inrush currents during startup.
With features like overcurrent protection and under-voltage lockout, the UC2844AQD8R ensures reliable and robust performance. Its compact package, usually in a DIP or surface-mount configuration, facilitates easy integration into various power supply designs. Overall, it is widely used in applications ranging from desktop power supplies to industrial equipment, where efficiency and reliability are critical.
Equivalent
Features
1. Voltage Range: Operates with a wide input voltage range, typically from 8V to 40V.
2. Current Mode Control: Provides inherent current limiting and improved line regulation.
3. High Efficiency: Designed for high-efficiency power conversion applications.
4. Built-in Soft Start: Reduces inrush current and provides a controlled startup.
5. Diverse Applications: Suitable for power supplies in industrial, telecom, and consumer electronics.
6. Frequency Range: Operates at a frequency of up to 500 kHz, allowing for smaller inductors and capacitors.
7. Compact Package: Available in an 8-pin DIP package for easier integration into designs.
8. Temperature Range: Operating temperature range of -40°C to +125°C for robust performance in various environments.
These features make the UC2844AQD8R ideal for designing efficient and reliable power supply systems.
Pinout
1. VCC: Supply voltage pin (typically 8V to 30V).
2. GND: Ground reference pin.
3. COMP: Compensation network connection for stability.
4. CSN: Current sense input (negative side).
5. CSP: Current sense input (positive side).
6. RAMP: Ramp signal input for current mode control.
7. OUT: Output driver pin for connecting to the power stage.
8. VFB: Feedback pin for the voltage regulation loop.
The UC2844AQD8R is designed for applications such as switching power supplies and offers features like over-current protection and an adjustable frequency range.
Manufacturer
The UC2844 is part of TI's family of power management ICs, specifically designed for off-line and DC-DC converter applications. It features a high-performance voltage mode controller, enabling efficient power supply designs. Texas Instruments is recognized for its commitment to quality and reliability, offering extensive resources and support for engineers and developers to facilitate product design and implementation. Overall, TI is a leading force in the semiconductor industry, focused on advancing technology and driving innovation across multiple sectors.
Application
1. Switching Power Supplies: Used in DC-DC converters for efficient power conversion.
2. LED Drivers: Controls power delivery to LED lighting systems.
3. Battery Chargers: Optimizes charging processes for various battery types.
4. Industrial Equipment: Provides power management in automation and control systems.
5. Telecommunications: Supplies power for communication devices and systems.
Its features enable precise control, efficiency, and reliability in these applications.