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Technical Specifications
Parameters and characteristics for this part
| Specification | UC1854J883B |
|---|---|
| Frequency - Switching | 200 kHz |
| Mounting Type | Through Hole |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -55 C |
| Package / Case | 16-CDIP (0.300", 7.62mm) |
| Supplier Device Package | 16-CDIP |
| Voltage - Supply [Max] | 20 V |
| Voltage - Supply [Min] | 10 VDC |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | N/A | 0 | $ 0.00 | |
| Texas Instruments | TUBE | 1 | $ 42.04 | |
| 100 | $ 36.72 | |||
| 250 | $ 28.32 | |||
| 1000 | $ 25.33 | |||
Description
General part information
UC1854 Series
The UC1854 provides active-power factor correction for power systems that otherwise would draw non-sinusoidal current from sinusoidal power lines. This device implements all the control functions necessary to build a power supply capable of optimally using available power-line current while minimizing line-current distortion. To do this, the UC1854 contains a voltage amplifier, an analog multiplier and divider, a current amplifier, and a fixed-frequency PWM.
In addition, the UC1854 contains a power MOSFET-compatible gate driver, 7.5-V reference, line anticipator, load-enable comparator, low-supply detector, and overcurrent comparator.
The UC1854 uses average current-mode control to accomplish fixed-frequency current control with stability and low distortion. Unlike peak current-mode, average current control accurately maintains sinusoidal line current without slope compensation and with minimal response to noise transients.
Documents
Technical documentation and resources