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UC3842AM
Current Mode PWM Switching Controllers
UC3842AM
Current Mode PWM Switching Controllers
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
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Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
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UC3842AM DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
The UC3842AM stands out for its ability to meet the demanding requirements of power supply applications with its robust features and capabilities. Its high-performance characteristics, including the high-speed error amplifier, on-chip oscillator, voltage reference, pulse-width modulator, and under-voltage lockout circuitry, make it a top choice for designers looking to achieve efficient power supply performance
Key Features
- LOW START-UP CURRENT. (0.5mA max.)
- TRIMMED OSCILLATOR DISCHARGE CURRENT. (See Product Highlight)
- OPTIMIZED FOR OFF-LINE AND DC-TO-DC CONVERTERS.
- AUTOMATIC FEED FORWARD COMPENSATION.
- PULSE-BY-PULSE CURRENT LIMITING.
- ENHANCED LOAD RESPONSE CHARACTERISTICS.
- UNDER-VOLTAGE LOCKOUT WITH HYSTERESIS.
- DOUBLE PULSE SUPPRESSION.
- HIGH-CURRENT TOTEM POLE OUTPUT.
- INTERNALLY TRIMMED BANDGAP REFERENCE.
- 500KHz OPERATION.
- LOW RO ERROR AMPLIFIER.
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Manufacturer | Microchip Technology | Product Category ! | AC DC Converters, Offline Switchers |
| Series | - | Packaging ! | Tube |
| Unit-Weight | 8-DIP (0.300", 7.62mm) | Mounting-Style | 8-DIP |
| Package-Case | - | Operating-Temperature | Isolated |
| Mounting-Type | Boost, Buck, Flyback, Forward | Supplier-Device-Package | 16V |
| Watt | 10 V ~ 30 V | Output-Isolation | Current Limiting |
| Internal-Switch-s | Frequency Control |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is UC3842AM?
The UC3842AM is a pulse-width modulation (PWM) controller integrated circuit (IC) manufactured by Texas Instruments. It is commonly used in switch mode power supplies and voltage regulators to control the switching frequency and duty cycle, providing efficient power conversion.
How Does UC3842AM Work?
The UC3842AM operates by comparing a feedback voltage with a sawtooth waveform to regulate the duty cycle of the output waveform. By adjusting the duty cycle, the UC3842AM can control the output voltage of the power supply or regulator. It offers precise control over the power output to achieve stable and efficient operation.
How Many Pins does UC3842AM have and What are the Functions of the Pinout Configuration?
The UC3842AM is typically available in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- VCC: Supply voltage pin.
- COMP, FB: Compensation and feedback pins for loop stability.
- RT, CT: Timing components pins for setting oscillator frequency.
- GND: Ground pin.
- OUT: Output pin for driving external power switches.
What are the Pros and Cons of UC3842AM?
Pros:
- Efficiency: Enables efficient power conversion in switch mode power supplies.
- Flexibility: Offers adjustable frequency and duty cycle for versatile application.
- Reliability: Provides stable voltage regulation for consistent operation.
- Cost-effective: Provides cost-effective solutions for power supply designs.
- Overload Protection: Offers protection features to safeguard the circuit and components.
Cons:
- External Components: May require additional external components for specific applications.
- Complexity: Requires careful design considerations for optimal performance.
- Noise Sensitivity: Susceptible to noise interference affecting performance.
Are There Any Equivalents/Alternatives to UC3842AM for Recommendation?
- Equivalent parts to the UC3842AM include the UC3842B, UC3842C, and UC3842D from Texas Instruments.
- Alternatives to the UC3842AM are the SG3524 from STMicroelectronics and the TL494 from Texas Instruments.
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