Overview
The UC3845BVD1R2G is a high-performance current mode controller from onsemi, part of the UC3845B series. It is designed for off-line and DC-to-DC converter applications, offering a cost-effective solution with minimal external components. This controller is available in an SOIC-8 package and is RoHS compliant. It operates within a wide supply voltage range and features a precise oscillator for frequency control, making it suitable for various power management needs.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | onsemi |
| Package Type | SOIC-8 |
| Mounting Method | Surface Mount |
| Supply Voltage | 7.6V to 36V |
| Turn On Threshold Voltage | 8.4V |
| Turn Off Threshold Voltage | 7.6V |
| Maximum Duty Cycle | 50% |
| Maximum Frequency | 275kHz |
| Operating Temperature Range | -40°C to +105°C |
| Maximum Supply Current | 17mA |
| Output Current | 1A |
Key Features
- Trimmed Oscillator for Precise Frequency Control
- Oscillator Frequency Guaranteed at 250 kHz
- Current Mode Operation to 500 kHz Output Switching Frequency
- Output Deadtime Adjustable from 50% to 70%
- Automatic Feed Forward Compensation
- Latching PWM for Cycle−By−Cycle Current Limiting
- Internally Trimmed Reference with Undervoltage Lockout
- High Current Totem Pole Output
- Undervoltage Lockout with Hysteresis
- Low Startup and Operating Current
- Pb-Free and RoHS Compliant
Applications
The UC3845BVD1R2G is specifically designed for off-line and DC-to-DC converter applications, including boost, flyback, and step-up/step-down configurations. It is suitable for use in power supplies, DC-DC converters, and other power management systems where high performance and minimal external components are required.
Q & A
- What is the UC3845BVD1R2G used for? The UC3845BVD1R2G is used for off-line and DC-to-DC converter applications, including boost, flyback, and step-up/step-down configurations.
- What is the package type of the UC3845BVD1R2G? The UC3845BVD1R2G is available in an SOIC-8 package.
- What is the operating temperature range of the UC3845BVD1R2G? The operating temperature range is -40°C to +105°C.
- What is the maximum supply voltage of the UC3845BVD1R2G? The maximum supply voltage is 36V.
- Is the UC3845BVD1R2G RoHS compliant? Yes, the UC3845BVD1R2G is RoHS compliant.
- What is the maximum frequency of the UC3845BVD1R2G? The maximum frequency is 275kHz.
- What is the typical supply current of the UC3845BVD1R2G? The typical supply current is around 12mA.
- Does the UC3845BVD1R2G have undervoltage lockout? Yes, it has undervoltage lockout with hysteresis.
- What is the output current capability of the UC3845BVD1R2G? The output current capability is up to 1A.
- Is the UC3845BVD1R2G Pb-free? Yes, the UC3845BVD1R2G is Pb-free.
