Fairchild Semiconductor KA3846
The KA3846 control IC 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. The KA3846 features low outputs in the OFF state.| Part No. | KA3846 |
|---|---|
| Datasheet | KA3846 Download |
| Manufacturer |  Fairchild Semiconductor |
| Description | SMPS Controller |
| Buy | Stock & Price |
FEATURES
● Automatic Feed Forward Compensation● Programmable Pulse by Pulse Current Limiting
● Automatic Symmetry Correction in Push-Pull Configuration
● Enhanced Load Response Characteristics
● Parallel Operation Capability for Modulator Power Systems
● Differential Current Sense Amplifier with Common Mode Range
● Double Pulse Suppression
● 200mA Totem-Pole Outputs
● ±2% Band gap Reference
● Under-Voltage Lockout
● Soft-Start Capability
● Shutdown Terminal
● 500KHz Operation
DESCRIPTION
Topological advantages include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel “power module,, while maintaining equal current sharing. Protection circuitry includes built-in-under-voltage lockout and programmable current limit in addition to soft-start capability. A shutdown function is also available which can initiate either a complete shutdown with automatic restart or latch the supply off. Other features include fully latched operation, double pulse suppression, deadtime adjust capability, and ±2% trimmed bandgap reference.
