Overview
The UC3843D8G4 is a current-mode PWM (Pulse Width Modulation) controller integrated circuit produced by Texas Instruments. This device is part of the UCx84x series, which is widely used in power supply and DC-DC converter applications. The UC3843D8G4 is specifically designed for operation in a temperature range of 0°C to 70°C, making it suitable for a variety of industrial and consumer electronics.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | 8-SOIC | - |
| Input Voltage | 12 - 25 | V |
| Output Voltage | Up to 13.5 | V |
| Output Current | 200 mA | - |
| Oscillator Frequency | 100 - 500 kHz | - |
| Operating Temperature | 0 - 70 | °C |
| UVLO (UnderVoltage LockOut) | 7.8 - 9 V | - |
| Duty Cycle Range | 0% - 100% | - |
| Supply Current | 11 - 17 mA | - |
| Junction Temperature | -65 to 150 | °C |
Key Features
- Current-mode PWM control for high performance and stability in power supply applications.
- Operating frequency range of 100 kHz to 500 kHz, allowing for flexibility in design.
- UnderVoltage LockOut (UVLO) with thresholds between 7.8V and 9V to ensure safe startup and operation.
- Maximum duty cycle of 100% for versatile application needs.
- Low standby current and high efficiency.
- RoHS compliant, ensuring environmental sustainability.
Applications
The UC3843D8G4 is widely used in various power supply and DC-DC converter applications, including:
- Switch-mode power supplies.
- DC-DC converters.
- High-frequency power conversion systems.
- Industrial power supplies.
- Consumer electronics power management.
Q & A
- What is the operating temperature range of the UC3843D8G4? The UC3843D8G4 operates in a temperature range of 0°C to 70°C.
- What is the input voltage range for the UC3843D8G4? The input voltage range is from 12V to 25V.
- What is the maximum output current of the UC3843D8G4? The maximum output current is 200 mA.
- What is the oscillator frequency range of the UC3843D8G4? The oscillator frequency range is from 100 kHz to 500 kHz.
- Is the UC3843D8G4 RoHS compliant? Yes, the UC3843D8G4 is RoHS compliant.
- What is the duty cycle range of the UC3843D8G4? The duty cycle range is from 0% to 100%.
- What is the UVLO threshold for the UC3843D8G4? The UVLO threshold is between 7.8V and 9V.
- What is the package type of the UC3843D8G4? The package type is 8-SOIC.
- What are some common applications of the UC3843D8G4? Common applications include switch-mode power supplies, DC-DC converters, and high-frequency power conversion systems.
- What is the junction temperature range for the UC3843D8G4? The junction temperature range is from -65°C to 150°C.
