(China (Mainland))
Product Summary
The UC2846DW is a current mode PWM controller. The UC2846DW provides all of the necessary features to implement fixed frequency, current mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop. Topological advantages of the UC2846DW include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel power modules while maintaining equal current sharing.
Parametrics
UC2846DW absolute maximum ratings: (1)Supply Voltage (Pin 15): +40V; (2)Collector Supply Voltage (Pin 13): +40V; (3)Output Current, Source or Sink (Pins 11, 14): 500mA; (4)Analog Inputs (Pins 3, 4, 5, 6, 16): -0.3V to +VIN; (5)Reference Output Current (Pin 2): -30mA; (6)Sync Output Current (Pin 10): -5mA; (7)Error Amplifier Output Current (Pin 7): -5mA; (8)Soft Start Sink Current (Pin 1): 50mA; (9)Oscillator Charging Current (Pin 9): 5mA; (10)Power Dissipation at TA=25℃: 1000mW; (11)Power Dissipation at TC=25℃: 2000mW; (12)Storage Temperature Range: -65℃ to +150℃; (13)Lead Temperature (soldering, 10 seconds): +300℃.
Features
UC2846DW features: (1)Programmable Pulse-by-Pulse Current Limiting; (2)Automatic Symmetry Correction in Push-pull Configuration; (3)Enhanced Load Response Characteristics; (4)Parallel Operation Capability for Modular Power Systems; (5)Differential Current Sense Amplifier with Wide Common Mode Range; (6)Double Pulse Suppression; (7)500mA (Peak)Totem-pole Outputs; (8)±1% Bandgap Reference; (9)Under-voltage Lockout; (10)Soft Start Capability; (11)Shutdown Terminal; (12)500kHZ Operation.
Diagrams
| Image | Part No | Mfg | Description |  |
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 UC2846DW |
Texas Instruments |
Current Mode PWM Controllers Current-Mode PWM Controller |
Data Sheet |
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UC2846DWG4 |
Texas Instruments |
Current Mode PWM Controllers Current-Mode PWM Controller |
Data Sheet |
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UC2846DWTRG4 |
Texas Instruments |
Current Mode PWM Controllers Current-Mode PWM Controller |
Data Sheet |
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UC2846DWTR |
Texas Instruments |
Current Mode PWM Controllers Current-Mode PWM Controller |
Data Sheet |
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