| Vin (Min) (V) | 3.1 |
| Vin (Max) (V) | 40 |
| Vout (Min) (V) | 1.259 |
| Vout (Max) (V) | 75 |
| Switch current limit (Typ) (A) | 2 |
| Regulated outputs (#) | 1 |
| Switching frequency (Min) (kHz) | 300 |
| Switching frequency (Max) (kHz) | 1300 |
| Iq (Typ) (mA) | 2.1 |
| Features | Enable |
| Duty cycle (Max) (%) | 90 |
| Rating | Catalog |
???300kHz/700kHz (-3)
???600kHz/1.3MHz (-6)
The LM5000 is a monolithic integrated circuit specifically designed and optimized for flyback, boost or forward power converter applications. The internal power switch is rated for a maximum of 80V, with a current limit set to 2A. Protecting the power switch are current limit and thermal shutdown circuits. The current mode control scheme provides excellent rejection of line transients and cycle-by-cycle current limiting. An external compensation pin and the built-in slope compensation allow the user to optimize the frequency compensation. Other distinctive features include softstart to reduce stresses during start-up and an external shutdown pin for remote ON/OFF control. There are two operating frequency ranges available. The LM5000-3 is pin selectable for either 300kHz (FS Grounded) or 700kHz (FS Open). The LM5000-6 is pin selectable for either 600kHz (FS Grounded) or 1.3MHz (FS Open). The device is available in a low profile 16-lead TSSOP package or a thermally enhanced 16-lead LLP package.
