Texas Instruments
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Step-up (boost) switching regulator, 52kHz. 3A switch.
| Part number | LM2577 |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Integrated Circuits › Switching Regulators |
| Package | TO-220-5 |
| Pins | 5 |
| Current | 3 A |
| Frequency | 52 kHz |
LM2577 pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | VIN | power | Unregulated input |
| 2 | OUT | power out | Switch output to the inductor |
| 3 | GND | ground | Ground |
| 4 | FB | input | Feedback from the output divider |
| 5 | ON/OFF | input | Shutdown, active low — tie to ground to run |
Schematic symbol and footprint
Schematic symbol
Footprint: TO-220-5 — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.