| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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2,000 pcs
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2000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| Clock Sync | |
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| Duty Cycle (Max) | |
| Frequency | |
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| Halogen Free | |
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| Output Current | |
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| Synchronous Rectifier | |
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| Voltage |
The UC3843BDG from On Semiconductor is a fixed-frequency current mode controller designed for efficient Off-Line and DC-DC converter applications. It offers a cost-effective solution with minimal external components, featuring a trimmed oscillator for precise frequency control and a high-gain error amplifier.
Key electrical specifications include an operating supply voltage range of 7.6V to 30V, a maximum operating frequency of 500kHz, and a maximum duty cycle of 96%. The controller supports Boost and Flyback topologies and provides a 1A output current. It operates within an ambient temperature range of 0°C to 70°C.
This device is housed in a 14-pin SOIC surface mount package. It is designed with features such as undervoltage lockout with hysteresis, cycle-by-cycle current limiting, and a latching PWM for protection. The UC3843BDG is also RoHS compliant and Halogen-Free.
Applications include various DC-DC converters where precise control and high efficiency are required. Its robust design and integrated features make it suitable for power supply designs needing a reliable current mode control solution.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.78 | $0.78 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The supply voltage range is 7.6V to 30V.
The ambient operating temperature range is 0°C to 70°C.
The UC3843BDG is available in a 14-SOIC surface-mount package.
The nominal output current is 1A.
It supports boost and flyback topologies.
The maximum duty cycle is 96%.
The UVLO turn-on threshold is 8.5V and turn-off is 7.6V.