Overview
The UC2843BD1 is a high-performance current mode PWM (Pulse Width Modulation) controller manufactured by STMicroelectronics. This device is designed to support isolated and non-isolated AC-DC and DC-DC switch mode power supplies, utilizing popular topologies such as boost, flyback, and quasi-resonant configurations. The UC2843BD1 integrates a comprehensive set of protections to enhance robustness and reliability in power supply applications.
Key Specifications
| Parameter | Value |
|---|---|
| Brand | STMicroelectronics |
| Maximum Switching Frequency | 500 kHz |
| Output Voltage | 5.05 V |
| Output Current | 1 A |
| Number of Outputs | 1 |
| Control Method | Current Mode |
| Mounting Type | Surface Mount |
| Fall Time | 150 ns |
| Rise Time | 150 ns |
| Package Type | SOIC |
| Pin Count | 8 |
| Topology | Boost, Flyback |
| Maximum Duty Cycle | 100% |
| Dimensions | 5 x 4 x 1.65 mm |
| Minimum Operating Temperature | -40 °C |
| Maximum Operating Temperature | +85 °C |
| Maximum Operating Supply Voltage | 30 V |
Key Features
- High-performance current mode PWM controller
- Supports boost and flyback topologies
- Maximum switching frequency of 500 kHz
- Single PWM output with a current capability of 1 A
- Comprehensive set of protections for enhanced robustness and reliability
- Operating temperature range from -40 °C to +85 °C
- Maximum duty cycle of 100%
- Surface mount package (SOIC) with 8 pins
Applications
The UC2843BD1 is suitable for a variety of power supply applications, including:
- Isolated and non-isolated AC-DC power supplies
- DC-DC switch mode power supplies
- Boost and flyback converters
- Quasi-resonant and other single-ended or double-ended configurations
Q & A
- What is the maximum switching frequency of the UC2843BD1?
The maximum switching frequency of the UC2843BD1 is 500 kHz.
- What are the supported topologies by the UC2843BD1?
The UC2843BD1 supports boost and flyback topologies.
- What is the output current capability of the UC2843BD1?
The UC2843BD1 has a single PWM output with a current capability of 1 A.
- What is the operating temperature range of the UC2843BD1?
The operating temperature range of the UC2843BD1 is from -40 °C to +85 °C.
- What is the maximum duty cycle of the UC2843BD1?
The maximum duty cycle of the UC2843BD1 is 100%.
- What is the package type and pin count of the UC2843BD1?
The UC2843BD1 comes in a SOIC package with 8 pins.
- What are the dimensions of the UC2843BD1?
The dimensions of the UC2843BD1 are 5 x 4 x 1.65 mm.
- What is the maximum operating supply voltage of the UC2843BD1?
The maximum operating supply voltage of the UC2843BD1 is 30 V.
- Does the UC2843BD1 have built-in protections?
Yes, the UC2843BD1 integrates a comprehensive set of protections for enhanced robustness and reliability.
- What types of power supplies can the UC2843BD1 support?
The UC2843BD1 can support isolated and non-isolated AC-DC and DC-DC switch mode power supplies.
