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UC3901QTRG3
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UC3901QTRG3

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High Efficiency, Low Power Consumption
  • Package: QFN (Quad Flat No-Lead)
  • Essence: Voltage Mode PWM Controller
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.5V to 30V
  • Output Voltage Range: 0.8V to 5.5V
  • Maximum Duty Cycle: 100%
  • Operating Temperature Range: -40°C to 85°C
  • Switching Frequency: 200kHz to 2MHz
  • Output Current: Up to 2A

Detailed Pin Configuration

The UC3901QTRG3 has a total of 16 pins. The pin configuration is as follows:

  1. VCC: Power supply input
  2. GND: Ground reference
  3. COMP: Compensation pin for feedback loop
  4. FB: Feedback voltage input
  5. CS: Current sense input
  6. SS/TR: Soft-start/Tracking control pin
  7. RT/CT: Timing resistor/capacitor connection
  8. SYNC: Synchronization input
  9. EN: Enable pin
  10. PGND: Power ground reference
  11. DRVH: High-side gate driver output
  12. DRVL: Low-side gate driver output
  13. BOOT: Bootstrap capacitor connection
  14. HO: High-side MOSFET output
  15. LO: Low-side MOSFET output
  16. VREF: Reference voltage output

Functional Features

  • Voltage mode PWM control
  • Adjustable soft-start time
  • Overvoltage protection
  • Undervoltage lockout
  • Overcurrent protection
  • Thermal shutdown protection
  • Error amplifier with high gain bandwidth product
  • Adjustable switching frequency

Advantages and Disadvantages

Advantages: - High efficiency - Low power consumption - Wide input voltage range - Adjustable output voltage - Comprehensive protection features

Disadvantages: - Limited maximum output current (up to 2A) - Requires external components for operation

Working Principles

The UC3901QTRG3 is a voltage mode PWM controller used in power management applications. It operates by comparing the feedback voltage (FB) with a reference voltage (VREF) to generate a control signal that regulates the duty cycle of the power switch. This control signal is then used to drive the high-side and low-side MOSFETs, which control the output voltage.

The IC incorporates various protection features such as overvoltage protection, undervoltage lockout, overcurrent protection, and thermal shutdown. These features ensure safe and reliable operation of the power management system.

Detailed Application Field Plans

The UC3901QTRG3 is commonly used in various power management applications, including:

  1. DC-DC converters
  2. Voltage regulators
  3. Power supplies
  4. Battery chargers
  5. LED drivers
  6. Motor control systems

Its wide input voltage range, adjustable output voltage, and comprehensive protection features make it suitable for a wide range of applications requiring efficient power management.

Detailed and Complete Alternative Models

  1. UC3901DW: SOIC (Small Outline Integrated Circuit) package, similar specifications and features.
  2. UC3901N: PDIP (Plastic Dual In-Line Package) package, similar specifications and features.
  3. UC3901QTR: QFN package with different pin configuration, similar specifications and features.

These alternative models provide flexibility in choosing the most suitable package and pin configuration for specific application requirements while offering similar functionality to the UC3901QTRG3.

Word count: 420 words

기술 솔루션에 UC3901QTRG3 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.

Sure! Here are 10 common questions and answers related to the application of UC3901QTRG3 in technical solutions:

1. What is UC3901QTRG3? UC3901QTRG3 is a voltage supervisor and reset IC that monitors the power supply voltage of a system and generates a reset signal when the voltage falls below a certain threshold.

2. What are the typical applications of UC3901QTRG3? UC3901QTRG3 is commonly used in microcontroller-based systems, industrial control systems, automotive electronics, and other applications where reliable power supply monitoring and reset generation are required.

3. How does UC3901QTRG3 work? UC3901QTRG3 continuously monitors the power supply voltage using an internal voltage reference and comparator. When the voltage drops below a set threshold, it triggers the reset output, which can be used to reset the microcontroller or other system components.

4. What is the operating voltage range of UC3901QTRG3? UC3901QTRG3 operates over a wide voltage range, typically from 2.7V to 18V.

5. Can UC3901QTRG3 tolerate voltage spikes or transients? Yes, UC3901QTRG3 has built-in hysteresis and noise immunity to tolerate voltage spikes and transients, ensuring reliable operation in noisy environments.

6. Does UC3901QTRG3 have adjustable reset thresholds? No, UC3901QTRG3 has fixed reset thresholds. However, different versions of the IC with different threshold voltages are available.

7. Can UC3901QTRG3 generate multiple reset signals? No, UC3901QTRG3 has a single reset output. If multiple reset signals are required, external logic circuitry can be used.

8. What is the maximum reset timeout period of UC3901QTRG3? UC3901QTRG3 has a fixed reset timeout period of typically 200ms. After this period, the reset output is released.

9. Is UC3901QTRG3 available in different package options? Yes, UC3901QTRG3 is available in various package options, including SOIC-16 and TSSOP-16.

10. Can UC3901QTRG3 operate in harsh environments? UC3901QTRG3 has a wide operating temperature range of -40°C to +125°C, making it suitable for operation in harsh industrial or automotive environments.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements.