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20,000 pcs
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20000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
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3,600 pcs
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3600 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
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1,000 pcs
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1000 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 |
| Category | |
| Manufacturer Name | |
| Clock Sync | |
| Control Features | |
| Duty Cycle (Max) | |
| ESD Protection | |
| Frequency | |
| Function | |
| Mounting Type | |
| Number of Outputs | |
| Operating Temperature | |
| Output Configuration | |
| Output Current | |
| Output Phases | |
| Output Type | |
| Supplier Device Package | |
| Synchronous Rectifier | |
| Topology | |
| Voltage |
The UC3856DW from Texas Instruments is a high-performance current mode PWM controller, serving as an upgrade for the UC3846 series. It is suitable for both new designs and existing applications requiring enhanced speed and accuracy.
This controller operates with a voltage range of 7V to 40V and a maximum duty cycle of 47%, with a frequency of 200kHz. Key electrical features include a 1.5A peak output current, a 4kV ESD protection, and precise control features like soft start and frequency control. The device also offers a 1V shutdown threshold and fast propagation delays from shutdown to outputs (65ns) and sync to outputs (50ns).
The UC3856DW is housed in a 16-SOIC package and is designed for surface mount applications. It operates within an ambient temperature range of 0°C to 70°C. The controller supports various topologies including Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, and Push-Pull configurations.
This part is pin-for-pin compatible with the UC3846 and features an improved current sense amplifier with reduced noise sensitivity and a differential current sense with a 3V common mode range. It is noted as 'Not Recommended For New Designs'.
| Qty | Low | High |
|---|---|---|
| 1+ | $3.34 | $3.34 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The UC3856DW operates from 7V to 40V.
The UC3856DW is available in a 16-SOIC (0.295", 7.50mm width) surface-mount package.
The operating temperature range is 0°C to 70°C.
The switching frequency is 200kHz.
The dual totem-pole outputs are rated for 1.5A peak current.
The UC3856DW provides 4kV ESD protection.
The shutdown threshold is accurately set at 1V.