| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
7,500 pcs
|
7500 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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| Synchronous Rectifier | |
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| Voltage |
The UC3844BDR2G is a fixed-frequency, current-mode controller from On Semiconductor, suitable for Off-Line and DC-DC converter applications. It features an oscillator, a temperature-compensated reference, a high-gain error amplifier, a current-sensing comparator, and a high-current totem pole output. This device is designed for cost-effectiveness with minimal external components.
Key electrical specifications include an operating voltage range of 10V to 36V and a maximum duty cycle of 48%. The controller supports various topologies such as Boost and Flyback, with an output type of Transistor Driver. It operates at frequencies up to 500kHz and includes frequency control features. The operating temperature range is 0°C to 70°C.
This controller is available in a 14-SOIC package, designed for surface mounting. It offers features like cycle-by-cycle current limiting and adjustable output deadtime. The UC3844B variant has UVLO thresholds of 16V (on) and 10V (off), making it suitable for off-line converters.
The UC3844BDR2G is RoHS3 compliant and has an MSL rating of 1.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.78 | $0.78 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
10V to 36V.
14-SOIC (0.154", 3.90mm Width) surface-mount package.
0°C to 70°C.
Up to 500kHz.
48%.
Boost and flyback.
Transistor driver.