onsemi UC3844D
The UC3844, UC3845 series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−to−DC converter applications offering the designer a cost effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.| Part No. | UC3844D |
|---|---|
| Datasheet | UC3844D Download |
| Manufacturer |  onsemi |
| Description | HIGH PERFORMANCE CURRENT MODE CONTROLLERS |
| Buy | Stock & Price |
FEATURES
PDIP−8 N SUFFIX CASE 626 1 14 1 8 1 SOIC−14 D SUFFIX CASE 751A SOIC−8 D1 SUFFIX CASE 751A 8 PIN CONNECTIONS Compensation 1 Voltage Feedback 2 Current Sense 3 RT/CT 4 (Top View) 8 7 6 5 Vref VCC Output GND●
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● 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 Vref 8(14) R R RTCT 4(7) Vref Undervoltage Lockout Oscillator Flip Flop & Latching PWM 5.0V Reference 7(12) Compensation NC Voltage Feedback NC Current Sense NC RT/CT 1 2 3 4 5 6 7 (Top View) 14 Vref 13 NC 12 VCC 11 VC 10 Output 9 8 GND Power Ground VCC Undervoltage Lockout VC 7(11) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 14 of this data sheet.
