The LM5116 is a synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply
The LM5116 is a synchronous buck controller designed for step‑down regulator applications with input voltages up to 100 V. It uses current‑mode control with an emulated ramp, providing line feed‑forward, cycle‑by‑cycle current limiting, and easy loop compensation. Features include a programmable operating frequency from 50 kHz to 1 MHz, adaptive dead‑time control, diode‑emulation mode for discontinuous operation, and a low‑quiescent shutdown current below 10 pA. The device is supplied in a TSSOP‑20EP package with an exposed pad for thermal dissipation.
The document provides a detailed pin description, absolute maximum and operating ratings, electrical characteristics, and typical performance graphs. Ordering information, connection diagrams, and typical application circuits are also included to aid designers in implementing the LM5116 in power‑management solutions.
| Input voltage range | 6 V to 100 V |
|---|---|
| Operating frequency range | 50 kHz to 1 MHz |
| Peak gate‑drive current | 3.5 A |
| Shutdown current (Ig) | <10 pA |
| Package | TSSOP‑20EP exposed pad |
| Programmable output voltage range | 1.215 V to 80 V |
The LM5116 operates with an input voltage from 6 V up to 100 V.
The device has a low‑quiescent shutdown current of less than 10 pA.
It is supplied in a TSSOP‑20EP package with an exposed pad for thermal dissipation.
The output voltage can be programmed from 1.215 V up to 80 V.