Overview
The LM5116MHX/NOPB is a wide range synchronous buck controller designed for step-down regulator applications from high-voltage or widely varying input supplies. This controller is part of Texas Instruments' power management portfolio and is intended for use in various high-performance applications.
The device operates using current mode control with an emulated current ramp, providing inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation. It supports a wide operating range of 6 V to 100 V and can drive external high-side and low-side NMOS power switches with adaptive dead-time control.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 6 V to 100 V |
| Output Voltage Range | 1.215 V to 80 V |
| Switching Frequency Range | 50 kHz to 1 MHz |
| Gate Drive Current | 3.5 A peak |
| Quiescent Current in Shutdown | < 10 µA |
| Voltage Reference Accuracy | 1.5% |
| Package Type | HTSSOP-20 exposed pad |
| Operating Temperature Range | -40°C to 125°C |
| Storage Temperature Range | -55°C to 150°C |
Key Features
- Emulated peak current mode control
- Wide operating range up to 100 V
- Low quiescent current shutdown (< 10 µA)
- Drives standard or logic level MOSFETs
- Robust 3.5-A peak gate drive
- Free-run or synchronous operation up to 1 MHz
- Optional diode emulation mode for discontinuous operation
- Programmable output voltage, current limit, and soft start
- Programmable line undervoltage lockout
- Automatic switch to external bias supply
- Thermal shutdown protection
Applications
- Automotive infotainment systems
- Industrial DC-DC motor drivers
- Automotive USB adapters
- Telecom servers
Q & A
- What is the input voltage range of the LM5116MHX/NOPB?
The input voltage range is 6 V to 100 V.
- What is the output voltage range of the LM5116MHX/NOPB?
The output voltage range is 1.215 V to 80 V.
- What is the switching frequency range of the LM5116MHX/NOPB?
The switching frequency range is 50 kHz to 1 MHz.
- What is the quiescent current in shutdown mode?
The quiescent current in shutdown mode is less than 10 µA.
- Does the LM5116MHX/NOPB support synchronous operation?
Yes, it supports free-run or synchronous operation up to 1 MHz.
- What is the gate drive current capability of the LM5116MHX/NOPB?
The gate drive current is 3.5 A peak.
- Does the LM5116MHX/NOPB have thermal shutdown protection?
Yes, it has thermal shutdown protection.
- What package type is the LM5116MHX/NOPB available in?
The LM5116MHX/NOPB is available in an HTSSOP-20 exposed pad package.
- What are some typical applications of the LM5116MHX/NOPB?
Typical applications include automotive infotainment systems, industrial DC-DC motor drivers, automotive USB adapters, and telecom servers.
- Is the LM5116MHX/NOPB RoHS compliant?
Yes, the LM5116MHX/NOPB is RoHS compliant according to EU regulations.
