Datasheet Details
| Part number | SG2540 |
|---|---|
| Manufacturer | LINFINITY |
| File Size | 73.52 KB |
| Description | OFF-LINE START-UP CONTROLLER |
| Datasheet | SG2540-LINFINITY.pdf |
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Overview: SG1540/SG2540/SG3540 OFF-LINE START-UP CONTROLLER.
| Part number | SG2540 |
|---|---|
| Manufacturer | LINFINITY |
| File Size | 73.52 KB |
| Description | OFF-LINE START-UP CONTROLLER |
| Datasheet | SG2540-LINFINITY.pdf |
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The SG1540 is an integrated circuit designed to efficiently provide start-up power from a high-voltage DC bus to a PWM control circuit in a switching power supply.
When used on the primary side, it reduces start-up current to less than 1mA and allows any standard PWM control circuit to be used as a primary-side controller.
When used to power a controller on the secondary side, it efficiently eliminates the need for a heavy 50/60Hz line transformer with its associated low frequency magnetic fields.
| Part Number | Description |
|---|---|
| SG2543 | POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT |
| SG2544 | LOW-VOLTAGE SUPERVISORY CIRCUIT |
| SG2548 | QUAD POWER FAULT MONITOR |
| SG2549 | CURRENT SENSE LATCH |
| SG2503 | PRECISION 2.5-VOLT REFERENCE |
| SG2524 | REGULATING PULSE WIDTH MODULATOR |
| SG2524B | REGULATING PULSE WIDTH MODULATOR |
| SG2525A | REGULATING PULSE WIDTH MODULATOR |
| SG2526 | REGULATING PULSE |
| SG2526B | REGULATING PULSE WIDTH MODULATOR |