| TYPE | DESCRIPTION |
|---|
| Mounting Style | Through Hole |
| Frequency | 500 kHz |
| Number of Pins | 8 Pin |
| Supply Voltage (DC) | 12.0V (min) |
| Case/Package | DIP-8 |
| Number of Outputs | 1 Output |
| Input Voltage (DC) | 15.0 V |
| Output Voltage | 5 V |
| Output Current | 200 mA |
| Number of Positions | 8 Position |
| Power Dissipation | 1200 mW |
| Rise Time | 45 ns |
| Switching Frequency | 500 kHz |
| Duty Cycle | 100 % |
| Maximum Duty Cycle | 100 % |
| Fall Time | 35 ns |
| Operating Temperature (Max) | 70 ℃ |
| Operating Temperature (Min) | 0 ℃ |
| Power Dissipation (Max) | 1200 mW |
| Supply Voltage | 7.6V ~ 30V |
| Supply Voltage (Max) | 25 V |
| Supply Voltage (Min) | 12 V |
| Input Voltage | 15 V |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Tube |
| Size-Length | 10.15 mm |
| Size-Width | 6.35 mm |
| Size-Height | 3.3 mm |
| Operating Temperature | 0℃ ~ 70℃ |
The KA3843B is a fixed frequency current-mode PWM Controller for off-line and DC-to-DC converter applications with minimum external components. This integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator and a high current totem pole output ideally suited for driving a power MOSFET. The KA3843B is 8.5V (on) and 7.9V (off) and it can operate within 100% duty cycle.
● Low start up current
● Maximum duty clamp
● UVLO with hysteresis
Fairchild
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