| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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10,031 pcs
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10031 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The UC3843AN is a high-performance current mode PWM controller manufactured by ON Semiconductor. It is optimized for off-line and DC-DC converter applications, offering features such as a low start-up current of less than 0.5mA and a trimmed oscillator discharge current of 8.3mA.
This controller operates within a voltage range of 8.4V to 30V and supports frequencies up to 500kHz, with a maximum duty cycle of 96%. Key control features include frequency control, pulse-by-pulse current limiting, and automatic feedforward compensation. The output stage is designed to sink at least 10mA during UVLO conditions when VCC is above 5V.
The UC3843AN is housed in an 8-pin DIP package and is suitable for through-hole mounting. Its topology supports Boost and Flyback configurations, providing a positive, isolation-capable output. The operating temperature range is from 0°C to 70°C.
This device is an improved, pin-for-pin compatible version of the UCx84x family, providing enhanced load response characteristics and double pulse suppression. It is designed to control current-mode or switched-mode power supplies effectively.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.78 | $0.78 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The input voltage range is 8.4V to 30V.
The maximum switching frequency is 500kHz.
The maximum duty cycle is 96%.
The operating temperature range is 0°C to 70°C.
The UC3843AN is available in an 8-DIP (0.300", 7.62mm) through-hole package, also known as 8-PDIP.
The UC3843AN supports boost and flyback topologies.
The output type is a transistor driver.