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ONSEMI UC3842BD1R2G Current Mode Controller
The UC3842BD1R2G is a high-performance fixed frequency current mode controller designed for off-line and DC-DC converter applications. It features a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output capable of driving power MOSFETs. Protects against undervoltage lockout, cycle-by-cycle current limiting, programmable deadtime, and has separate power and ground pins for reduced switching noise. Suitable for efficient, cost-effective switching power supplies with minimal external components.
ONSEMI UC3842BD1R2G Current Mode Controller Specifications:
- Oscillator Frequency: Guaranteed at 250 kHz
- Maximum Output Duty Cycle: Programmable, dependent on resistor RY
- Peak Output Drive Current: 1.0 A
- Reference Voltage: 5.0 V trim to ±1.0%
- Undervoltage Lockout Thresholds: 16 V (on), 10 V (off)
- Operating Temperature Range: -25°C to +105°C
- Power Dissipation (SOIC-14): 862 mW at 25°C
- Input Voltage for Sense Inputs: 0 V to 55 V, typical sensing threshold around 1 V
- Output Rise/Fall Time: Typical 50 ns
- Power Ground: Separate from control circuitry ground to minimize noise
- Package Types: SOIC-8, SOIC-14, PDIP-8
- Maximum Power Dissipation (SOIC-8): 702 mW
- Maximum Power Dissipation (SOIC-14): 862 mW
- Junction-to-Air Thermal Resistance: 100 to 178 °C/W depending on package
- Storage Temperature Range: -65°C to +150°C
Buy the Buy ON Semiconductor UC3842BD1R2G Part Number Online
Purchase the ON Semiconductor UC3842BD1R2G fixed frequency current mode controller online today. Ideal for off-line and DC-DC converter designs, it offers precise duty cycle control, built-in undervoltage lockout, cycle-by-cycle current limiting, and a high current totem pole output. Engineered for minimal external components, enhanced thermal performance, and excellent noise immunity, this device ensures reliable and efficient power management for a wide range of switching power supplies and industrial applications. Order now for fast delivery and technical support.
Get ON Semiconductor UC3842BD1R2G today—designed for high efficiency, accurate duty cycle, and reliable power switching in your project.
Frequently Asked Questions
Where can I buy ONSEMI UC3842BD1R2G?
You can click on the BUY or RFQ button to purchase UC3842BD1R2G from an authorized ONSEMI distributor.
How do I troubleshoot issues or seek technical support for part UC3842BD1R2G?
You can download the UC3842BD1R2G datasheet or visit the ONSEMI website for support.
Who is the manufacturer of UC3842BD1R2G?
ONSEMI