| TYPE | DESCRIPTION |
|---|
| Mounting Style | Surface Mount |
| Frequency | 1 MHz |
| Number of Pins | 8 Pin |
| Supply Voltage (DC) | 10.0V (min) |
| Case/Package | SOIC-8 |
| Number of Outputs | 1 Output |
| Input Voltage (DC) | 12.0 V |
| Output Voltage | 5 V |
| Output Current | 80 mA |
| Number of Positions | 8 Position |
| Number of Regulated Outputs | 1 Output |
| Rise Time | 35 ns |
| Switching Frequency | 1000 kHz |
| Thermal Shutdown | No |
| Topology | Buck, Boost, Flyback, Forward |
| Duty Cycle | 70 % |
| Maximum Duty Cycle | 70 % |
| Fall Time | 18 ns |
| Operating Temperature (Max) | 70 ℃ |
| Operating Temperature (Min) | 0 ℃ |
| Supply Voltage | 8V ~ 17.5V |
| Supply Voltage (Max) | 15 V |
| Supply Voltage (Min) | 10 V |
| Input Voltage | 12 V |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Tube |
| Size-Length | 4.9 mm |
| Size-Width | 3.91 mm |
| Size-Height | 1.58 mm |
| Operating Temperature | -55℃ ~ 150℃ (TJ) |
The UCC3809D-1 is a BCDMOS low power economy primary Side Controller IC contains all the control and drive circuitry required for off-line and isolated DC to DC fixed frequency current-mode switching power supplies with minimal external parts count. Internally implemented circuits include undervoltage lockout featuring startup current less than 100µA, user accessible voltage reference, logic to ensure latched operation, a PWM comparator and a totem pole output stage to sink or source peak current. The output stage, suitable for driving N-channel MOSFETs, is low in the off state. Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The family has UVLO thresholds and hysteresis levels for off-line and DC to DC systems as shown in the table to the left.
● User programmable soft start with active low shutdown
● User programmable maximum duty cycle
● Accessible 5V Reference
● Undervoltage lockout
● Low 100µA Startup current
● Green product and no Sb/Br
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