Texas Instruments UC3844
the UC384x series is specified for operation from 0°C to 70°C.| Part No. | UC3844 |
|---|---|
| Datasheet | UC3844 Download |
| Manufacturer |  Texas Instruments |
| Description | Current-Mode PWM Controllers |
| Buy | Stock & Price |
FEATURES
● Optimized for off-line and DC-to-DC converters● Low start-up current (< 1mA)
● Automatic feedforward compensation
● Pulse-by-pulse current limiting
● Enhanced load-response characteristics
● Undervoltage lockout with hysteresis
● Double-pulse suppression
● High-current totem-pole output
● Internally trimmed bandgap reference
● Up to 500kHz operation
● Error amplifier with low output resistance 2
APPLICATIONS
● Switching regulators of any polarity● Transformer-coupled DC-DC converters 3
DESCRIPTION
The UCx84x series of control integrated circuits provide the features that are necessary to implement off-line or DC-to-DC fixed-frequency current-mode control schemes, with a minimum number of external components. The internally implemented circuits include an undervoltage lockout (UVLO), featuring a start-up current of less than 1mA, and a precision reference trimmed for accuracy at the error amplifier input. Other internal circuits include logic to provide latched operation, a...
