onsemi UC2844
High Performance Current-Mode Controller
| Part No. | UC2844 |
|---|---|
| Datasheet | UC2844 Download |
| Manufacturer |  onsemi |
| Description | High Performance Current-Mode Controller |
| Buy | Stock & Price |
FEATURES
● Current Mode Operation to 500 kHz Output Switching Frequency● Output Deadtime Adjustable from 50% to 70%
● Automatic Feed Forward Compensation
● Latching PWM for Cycle−By−Cycle Current Limiting
● Internally Trimmed Reference with Undervoltage Lockout
● High Current Totem Pole Output
● Input Undervoltage Lockout with Hysteresis
● Low Startup and Operating Current
● Direct Interface with ON Semiconductor SENSEFETt Products
● Pb−Free Packages are Available VCC 7(12) Vref 8(14) RTCT 4(7) Voltage Feedback 2(3) 1(1) Output Comp. R 5.0V Reference VCC Undervoltage Lockout R Vref Undervoltage Lockout Oscillator + − Error Amplifier Flip Flop & Latching PWM GND 5(9) Pin numbers in parenthesis are for the D suffix SOIC−14 package. Figure 1. Simplified Block Diagram VC 7(11) Output 6(10) PWR GND 5(8) Current Sense 3(5) © Semiconductor Components Industries, LLC, 2006 July, 2006 − Rev. 7 1 8 1 14 1 8 1 PDIP−8 N SUFFIX CASE 626 SOIC−14 D SUFFIX CASE 751A SOIC−8 D1 SUFFIX CASE 751A PIN CON...
