LM5116WGX

• Hermetic packaging for harsh working environments
• Peak current mode simulation
• Wide operating voltage range up to 100V
• _低 I Q关机（
• Drive standard or logic-level MOSFETs
• Lebaix 3.5A peak gate driver
• Free or synchronous operation up to 1 MHz
• Optional diode emulation mode
• Programmable output from 1.215V to 80V
• 1.5% precision voltage reference
• Programmable current limit
• Programmable soft start
• Programmable line undervoltage lockout
• Automatically switch to an external bias power supply
• CERPACK-20 has no thermal shutdown

illustrate

LM5116WG is a synchronous buck controller that extends from high voltage buck regulators to a wide range of different applications or input power supplies. The control method is based on the current pattern, using a simulated current ramp control. Current mode control provides circuit-specific feedforward, cycle current limiting, and simplified loop compensation. The sensitivity of the pulse-width modulation circuit to reduce noise using an emulation control ramp allows for very small duty cycles necessary for reliable control in high input voltage applications. Programmable operating frequency from 50 kHz to 1 MHz. The LM5116WG driver adapts to dead time control of external NMOS power switches on both the high and low sides. User-selectable diode emulation mode allows for intermittent mode operation under light load conditions for increased efficiency. Low quiescent current shutdown disables the controller and the total input current consumption is less than 10 microamps. Other features include a high-voltage bias regulator with automatic switching for improved efficiency, frequency synchronization, cyclic cycle current limiting and adjustable line undervoltage lockout, external bias. The device is in a CERPACK-20 high-temperature ceramic package with thermal shutdown function inhibited.