Datasheet Details
| Part number | LM2642 |
|---|---|
| Manufacturer | National Semiconductor (now Texas Instruments) |
| File Size | 643.89 KB |
| Description | Two-Phase Synchronous Step-Down Switching Controller |
| Datasheet |
 LM2642 Datasheet
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General Description
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 reduces the input ripple RMS current, thereby significantly reducing the required input capacitance.
Key Features
- 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 for both outputs. A UV-Delay pin is also available to allow delayed shut off time for the IC during an output under-voltage event. Features n n n n n n n n n n n n n n n n Two synchronous buck regulat.
