Overview
The UC3842ANG is a high-performance fixed-frequency current-mode controller designed for offline and DC-to-DC converter applications. Manufactured by onsemi, this controller is part of the UC3842 family and is known for its robust performance and versatility in various power supply designs. It supports boost and flyback topologies, making it suitable for a wide range of applications, including switched mode power supplies (SMPS) and DC-to-DC converters.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | 8-DIP (0.300", 7.62mm) |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Supply Voltage | 10V ~ 30V |
| Switching Frequency | Up to 500kHz |
| Duty Cycle (Max) | 96% |
| Output Type | Transistor Driver |
| Output Configuration | Positive, Isolation Capable |
| Topology | Boost, Flyback |
| Synchronous Rectifier | No |
| Control Features | Frequency Control |
| Number of Outputs | 1 |
Key Features
- High-performance fixed-frequency current-mode controller
- Supports up to 500kHz switching frequencies
- Maximum duty cycle of 96%
- Compatible with boost and flyback topologies
- Direct transistor drive capability
- Built-in under-voltage lockout, over-current protection, and thermal protection with hysteresis
- Cost-effective power management solution with stable and reliable performance
- High integration reduces external component count, improving reliability and reducing costs in high-volume production
Applications
- Switched mode power supplies (SMPS)
- DC-to-DC converters
- Power factor correction modules
- Charge controllers for battery systems
Q & A
- What is the UC3842ANG used for?
The UC3842ANG is used in offline and DC-to-DC converter applications, including switched mode power supplies (SMPS) and DC-to-DC converters.
- What is the operating temperature range of the UC3842ANG?
The operating temperature range of the UC3842ANG is from 0°C to 70°C.
- What are the supported topologies by the UC3842ANG?
The UC3842ANG supports boost and flyback topologies.
- What is the maximum switching frequency of the UC3842ANG?
The maximum switching frequency of the UC3842ANG is up to 500kHz.
- Does the UC3842ANG have built-in protection features?
Yes, the UC3842ANG has built-in under-voltage lockout, over-current protection, and thermal protection with hysteresis.
- What is the maximum duty cycle of the UC3842ANG?
The maximum duty cycle of the UC3842ANG is 96%.
- Is the UC3842ANG RoHS compliant?
Yes, the UC3842ANG is lead-free and RoHS compliant.
- What type of output does the UC3842ANG provide?
The UC3842ANG provides a transistor driver output.
- Is the UC3842ANG suitable for high-power-density designs?
Yes, the UC3842ANG supports high-power-density designs.
- What is the current status of the UC3842ANG in terms of product lifecycle?
The UC3842ANG is an obsolete product and may have limited or no factory support. Replacements or upgrades need to be evaluated.
