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UC1846 Datasheet PDF

Part Series:UC1846 Series
Description:the uc1846/7 family of control ics provides all of the necessary features to implement fixed frequency current mode c...
Document:UC1846JQMLV Datasheet PDF (29 Pages)

UC1846 Datasheet PDF

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UC1846 - TI Function Overview

The UC1846/7 family of control devices 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 include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel while maintaining equal current sharing. \
Protection circuitry includes built-in undervoltage 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, deadline adjust capability, and a ±1% trimmed band gap reference.
The UC1846 features low outputs in the OFF state, while the UCx847 features high outputs in the OFF state.
Automatic Feedforward Compensation
Programmable Pulse-by-Pulse Current Limiting
Automatic Symmetry Correction in Push-Pull
Configuration
Enhanced Load Response Characteristics
Parallel Operation Capability for Modular Power
Systems
Differential Current Sense Amplifier with Wide
Common Mode Range
Double-Pulse Suppression
500-mA (Peak) Totem-pole Outputs
±1% Band Gap Reference
Undervoltage Lockout
Soft-Start Capability
Shutdown Terminal
500-kHz Operation
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