TYPE | DESCRIPTION |
---|
Case/Package | 0-XCEPT |
Number of Outputs | 1 Output |
Output Current | 1000 mA |
Number of Regulated Outputs | 1 Output |
Rise Time | 50 ns |
Switching Frequency | 500 kHz |
Topology | Boost, Flyback, Forward |
Maximum Duty Cycle | 100 % |
Fall Time | 50 ns |
Operating Temperature (Max) | 125 ℃ |
Operating Temperature (Min) | -55 ℃ |
TYPE | DESCRIPTION |
---|
Product Lifecycle Status | Active |
Packaging | Tube |
Operating Temperature | -55℃ ~ 125℃ (TA) |
The UC1843 family of control devices provides the necessary features to implement off-line or dc-to-dc fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 1 mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state. The under-voltage lockout threshold is 8.4 V and maximum duty cycle range is around 100%.
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