| TYPE | DESCRIPTION |
|---|
| Mounting Style | Surface Mount |
| Frequency | 1 MHz |
| Number of Pins | 8 Pin |
| Supply Voltage (DC) | 8.30V (min) |
| Case/Package | SOIC-8 |
| Number of Outputs | 2 Output |
| Output Voltage | 500 mV |
| Output Current | 100 mA |
| Supply Current | 2 mA |
| Number of Positions | 8 Position |
| Power Dissipation | 0.65 W |
| Number of Regulated Outputs | 2 Output |
| Rise Time | 25 ns |
| Switching Frequency | 1000 kHz |
| Topology | Full-Bridge, Half-Bridge, Push-Pull |
| Duty Cycle | 49 % |
| Maximum Duty Cycle | 50 % |
| Fall Time | 25 ns |
| Operating Temperature (Max) | 85 ℃ |
| Operating Temperature (Min) | -40 ℃ |
| Power Dissipation (Max) | 650 mW |
| Supply Voltage | 8.3V ~ 15V |
| Supply Voltage (Max) | 15 V |
| Supply Voltage (Min) | 8.3 V |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Each |
| Size-Length | 4.9 mm |
| Size-Width | 3.91 mm |
| Size-Height | 1.58 mm |
| Operating Temperature | -40℃ ~ 85℃ |
The UCC2808AD-1 is a BiCMOS push-pull Pulse Width Modulation (PWM) contains all of the control and drive circuitry required for off-line or DC to DC fixed frequency current-mode switching power supplies with minimal external parts count. The dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 to 200ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%. It offers a variety of package options, temperature range options and choice of undervoltage lockout levels. The family has UVLO thresholds and hysteresis options for off-line and battery powered systems. Thresholds are shown in the table below. It features an internal discharge transistor from the CS pin to ground, which is activated each clock cycle during the oscillator dead time.
● Dual output drive stages in push-pull configuration
● Current sense discharge transistor to improve dynamic response
● 130µA Typical starting current
● 1mA Typical run current
● Internal soft start
● On chip VDD clamping
● Green product and no Sb/Br
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