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UC2842AD8
+BOMIC PWM BOOST FLYBACK CM 8SOIC
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제조업체텍사스 인스트루먼트(주)
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제조업체 부품 #UC2842AD8
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데이터시트 UC2842AD8 DataSheet
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재고8289
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사양
| 속성 | 가치 |
| Series | UCx84xA |
| Part Status | Obsolete |
| Applications | PWM Controller |
| Voltage - Input | -0.3V ~ 6.3V |
| Voltage - Supply | 10V ~ 30V |
| Supply Current | 11 mA |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| Base Product Number | UC2842 |
개요
Description
Key features include an adjustable output voltage, soft-start capability to minimize inrush current, and comprehensive protection functions such as overvoltage, undervoltage, and thermal shutdown. The UC2842AD8 operates with a programmable frequency, allowing users to optimize power conversion efficiency and minimize electromagnetic interference.
Its current-mode control enhances transient response and simplifies loop compensation, while a built-in voltage reference ensures stable operation. The device is available in an 8-pin DIP package, facilitating easy integration into circuit designs. Overall, the UC2842AD8 is a robust and versatile choice for designers seeking efficient and reliable power management solutions.
Equivalent
Features
1. Voltage Range: Operates from a wide input voltage range of 10V to 30V.
2. Current Mode Control: Provides improved transient response and inherent current limiting.
3. High Switching Frequency: Capable of operating at frequencies up to 500 kHz, enabling smaller inductors and capacitors.
4. Difficult Load Handling: Features a built-in soft-start to limit inrush current and improve startup behavior.
5. Protection Features: Includes over-voltage protection, under-voltage lockout, and thermal shutdown capabilities.
6. Integrated Circuitry: Combines a high-speed comparator, a precision reference, and a totem-pole output stage for driving external MOSFETs.
7. Applications: Ideal for off-line converters, DC-DC converters, and other power management systems.
Overall, the UC2842AD8 is suitable for efficient and reliable power supply designs in various electronic applications.
Pinout
Pin Count and Functions:
1. Pin 1 (COMP): Compensation pin for error amplifier.
2. Pin 2 (CS): Current sense input; provides feedback for current limiting.
3. Pin 3 (RAMP): Ramp input for PWM control.
4. Pin 4 (GND): Ground reference.
5. Pin 5 (VC): Voltage control input for PWM.
6. Pin 6 (VCC): Supply voltage input.
7. Pin 7 (OUT): Output pin for driving a power switch.
8. Pin 8 (REF): Reference voltage output, typically 5V.
This IC is commonly used in switch-mode power supplies and offers features like internal frequency compensation and low startup current.