| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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137 pcs
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137 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
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20 pcs
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20 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The UC3845N from On Semiconductor is a versatile current-mode PWM controller designed for efficient power management in off-line and DC-to-DC converter applications. This integrated circuit operates at frequencies up to 500kHz and features a maximum duty cycle of 48%.
Key electrical characteristics include a wide operating voltage range of 7.6V to 30V and an undervoltage lockout (UVLO) with hysteresis, set at 8.4V and 7.6V respectively. The device offers a low start-up current of less than 1mA and features like automatic feedforward compensation, pulse-by-pulse current limiting, and double-pulse suppression.
The UC3845N is housed in an 8-PDIP package suitable for through-hole mounting. It operates within a temperature range of 0°C to 70°C. The output stage is a high-current totem-pole design capable of sourcing or sinking significant current, intended for driving N-channel MOSFETs.
This controller is suitable for implementing boost and flyback topologies. Its features make it a robust choice for various power supply designs requiring precise control and high efficiency.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.85 | $0.85 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The input voltage range is 7.6V to 30V, with undervoltage lockout thresholds of 8.4V (rising) and 7.6V (falling).
The UC3845N is available in an 8-DIP (0.300", 7.62mm) through-hole package, also known as 8-PDIP.
The operating temperature range is 0°C to 70°C.
It supports boost and flyback topologies.
The maximum duty cycle is 48%.
The switching frequency is up to 500kHz.