LM5116MHX/NOPB power chips

The **Texas Instruments LM5116MHX/NOPB** is a wide-input-voltage synchronous buck controller designed for high-voltage or widely varying input power rails. It employs emulated current-mode control with analog current ramp, delivering inherent line feedforward, cycle-by-cycle current limiting, reduced PWM noise sensitivity, and simplified loop compensation — enabling reliable operation at very low duty cycles in high-VIN applications.

**Key Specifications:**
– Brand: Texas Instruments (TI)
– Part Number: LM5116MHX/NOPB
– Topology: Synchronous buck controller (drives external high-side & low-side N-MOSFETs)
– Input Voltage Range: 6 V to 100 V
– Output Voltage Range: 1.215 V to 80 V (adjustable)
– Switching Frequency: Programmable 50 kHz to 1 MHz (typical ranges 180–220 kHz or 480–590 kHz)
– Gate Drive: Strong 3.5 A peak (high- & low-side), adaptive dead-time control
– Quiescent Current (shutdown): <10 µA (typ.)
– Reference Accuracy: 1.5% precision
– Control Features: Emulated current-mode, optional diode emulation mode (for DCM / improved light-load efficiency), frequency synchronization, programmable soft-start, programmable current limit, programmable UVLO, automatic external bias switching
– Protection: Thermal shutdown, cycle-by-cycle current limiting
– Package: HTSSOP-20 with exposed thermal pad (PowerPAD™)
– Packaging: Tape & Reel
– Operating Junction Temperature: –40 °C to +125 °C (TJ)

**Typical Applications:**
– Automotive infotainment and telematics systems
– Industrial DC motor drives and actuators
– Automotive USB chargers / adapters
– Telecom and server power supplies
– High-voltage distributed power systems (48 V, 72 V, 100 V rails)
– Battery-powered industrial equipment and solar / renewable converters

The LM5116 combines exceptional high-voltage capability, high-frequency operation, excellent light-load efficiency (via diode emulation), robust gate drive, and comprehensive programmability in a thermally enhanced HTSSOP-20 package — making it the preferred synchronous buck controller for demanding wide-input, high-efficiency DC-DC designs in automotive, industrial, telecom, and server applications. Custom designs can be created using TI WEBENCH® Power Designer.