| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
15,650 pcs
|
15650 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
3,121 pcs
|
3121 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
350 pcs
|
350 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
350 pcs
|
350 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Clock Sync | |
| Control Features | |
| Duty Cycle (Max) | |
| Frequency | |
| Function | |
| Mounting Type | |
| Number of Outputs | |
| Operating Temperature | |
| Output Configuration | |
| Output Phases | |
| Output Type | |
| Supplier Device Package | |
| Synchronous Rectifier | |
| Topology | |
| Voltage |
The UC3844BN from STMicroelectronics is a fixed-frequency current mode controller optimized for off-line and DC-DC converter designs. It offers a cost-effective solution with minimal external components, integrating an oscillator, a temperature-compensated reference, a high-gain error amplifier, a current sensing comparator, and a high-current totem pole output. This controller is suitable for driving power MOSFETs and includes protective features such as undervoltage lockout with hysteresis and cycle-by-cycle current limiting.
Key electrical specifications include an operating voltage range of 10V to 30V and a maximum duty cycle of 48%. The device supports various topologies including Boost and Flyback converters and operates at frequencies up to 500kHz. The oscillator frequency is guaranteed at 250 kHz, and the output deadtime is adjustable from 50% to 70%.
The UC3844BN is available in an 8-pin Mini DIP package, designed for through-hole mounting. Its operating temperature range is 0°C to 70°C (TJ). This controller is well-suited for applications requiring precise frequency control and efficient power conversion.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.78 | $0.78 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The UC3844BN operates with a voltage range of 10V to 30V.
The UC3844BN supports Boost and Flyback topologies.
The UC3844BN can operate at switching frequencies up to 500kHz.
The UC3844BN is available in an 8-pin Mini DIP package.
The operating temperature range for the UC3844BN is 0°C to 70°C (TJ).
The UC3844BN is RoHS3 compliant.
The Moisture Sensitivity Level (MSL) for the UC3844BN is 1 Unlimited.