| Part Number | LM2642 |
|---|---|
| Manufacturer | National Semiconductor |
| Overview | The LM2642 consists of two current mode synchronous buck regulator controllers with a switching frequency of 300kHz. The two switching regulator controllers operate 180˚ out of phase. This feature red. analog soft-start circuitry that is independent of the output load and output capacitance. This makes the soft-start behavior more predictable and controllable than traditional soft-start circuits. A PGOOD1 pin is provided to monitor the dc output of channel 1. Over-voltage protection is available f. |
LM2642 Datasheet
The LM2642 is a Two-Phase Synchronous Step-Down Switching Controller.
| Part Number | LM2642 |
|---|---|
| Description | Two-Phase Synchronous Step-Down Switching Controller |
| Manufacturer | Texas Instruments |
| Overview |
The LM2642 consists of two current mode synchronous buck regulator controllers with a switching frequency of 300kHz.
The two switching regulator controllers operate 180° out of phase. This feature red.
1
*2 Two Synchronous Buck Regulators * 180° Out of Phase Operation * 4.5V to 30V Input Range * Power Good Function Monitors Ch.1 * 37µA Shutdown Current * 0.04% (typical) Line and Load Regulation Error * Current Mode Control With or Without a Sense Resistor * Independent Enable/Soft-start Pins Allow. |