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ONSEMI UC3845BD1R2G Current Mode Controller
The UC3845BD1R2G is a high-performance, fixed-frequency current mode controller designed for off-line and DC-DC conversion applications. It features an integrated oscillator, a temperature-compensated reference, high gain error amplifier, current sensing comparator, and a high-current totem pole output capable of driving power MOSFETs. It includes undervoltage lockout protections with hysteresis, cycle-by-cycle current limiting, and deadtime programmability from 50% to 70%. Available in a compact 8-pin PDIP and surface-mount packages, it is suitable for efficient, cost-effective switching power supplies, offering precise timing, reliable overcurrent protection, and low noise operation.
ONSEMI UC3845BD1R2G Current Mode Controller Specifications:
- Oscillator Frequency: Guaranteed at 250 kHz, operation up to 500 kHz
- Output Deadtime: Programmable from 50% to 70%
- Reference Output Voltage: 5.0 V, ±1% at 25°C
- Undervoltage Lockout: UC3845BD1R2G thresholds at 8.4 V (on) and 7.6 V (off)
- Output Drive Current: Up to 1.0 A peak
- Power Dissipation: Max 862 mW in SOIC-14 package at 25°C
- Thermal Resistance: Junction-to-air 145°C in SOIC-14
- Package Options: 8-pin PDIP and SOIC-8, 14-pin SOIC-14
- Operating Temp Range: -25°C to +105°C (varies with package)
- Error Amplifier Gain: 90 dB, bandwidth 1 MHz
- Input Voltage: Vcc = 15 V, UVLO thresholds at 16 V (on) and 10 V (off)
- Output Configuration: Totem pole drive stage for MOSFETs
- RoHS and Pb-Free compliant
Buy the ON Semiconductor Series UC3845 Current Mode Controller: UC3845BD1R2G
Purchase the ON Semiconductor Series UC3845BD1R2G today to optimize your power electronics projects. This high-performance, fixed-frequency controller offers precise deadtime control, cycle-by-cycle current limiting, and undervoltage lockout protections, ensuring efficient and reliable power conversion. Its compact package, low noise operation, and excellent thermal characteristics make it ideal for off-line and DC-DC converter applications. Enhance your system's performance with this proven, RoHS-compliant product designed for engineers seeking high efficiency and excellent control in demanding power supply designs.
Order your ON Semiconductor Series UC3845BD1R2G today and enhance your switching power supply designs with reliable, high-performance control features.
Frequently Asked Questions
Where can I buy ONSEMI UC3845BD1R2G?
You can click on the BUY or RFQ button to purchase UC3845BD1R2G from an authorized ONSEMI distributor.
How do I troubleshoot issues or seek technical support for part UC3845BD1R2G?
You can download the UC3845BD1R2G datasheet or visit the ONSEMI website for support.
Who is the manufacturer of UC3845BD1R2G?
ONSEMI