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UC3843 Current-Mode PWM Controller IC (ON Semi) - SOP-14 SMD Package
The UC3843 is a current-mode pulse-width modulation (PWM) controller designed for use in switching power supplies. It provides a complete solution for high-performance and efficient DC-DC conversion. The IC features a high-speed comparator, a precision reference, and a totem pole output stage. The UC3843 is housed in a compact SOP-14 SMD package, making it suitable for space-constrained applications.
Specifications:
- IC Type: Current-Mode PWM Controller
- Package Type: SOP-14 SMD
- Operating Voltage Range: 8 V to 20 V
- Output Voltage Range: 5 V
- Frequency Range: Up to 100 kHz
- Start-Up Current: 1.5 mA
- Quiescent Current: 5 mA
- Switching Frequency: 100 kHz typical
- Temperature Range: -40°C to +85°C
- Brand: On Semiconductors
Pin Configuration:
- VCC: Supply Voltage
- GND: Ground
- CSN: Current Sense Negative
- CSP: Current Sense Positive
- RT: Timing Resistor
- CT: Timing Capacitor
- COMP: Compensation
- DR: Drive
- VREF: Reference Voltage
- SW: Switch
- SGND: Signal Ground
- ISEN: Current Sense Input
- INV: Inverting Input
- NONINV: Non-Inverting Input
Features:
- Current-mode control: Provides improved performance in power conversion
- High-speed comparator: Ensures accurate pulse-width modulation
- Precision reference voltage: Maintains stable operation
- Totem pole output stage: Suitable for driving power MOSFETs
- Low start-up current: Efficient operation
- Compact SOP-14 package: Space-saving design
Applications:
- Switching power supplies
- DC-DC converters
- Power management circuits
- Battery-powered devices
- Power adapters and chargers
- Industrial power control systems
Package Includes:
1 x UC3843 Current-Mode PWM Controller 14 Pin IC (SOP-14 SMD Package)
Note: Product images are for illustrative purposes only and may differ from the actual product.
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