LM5116-HT
www.ti.com
SLVSBS8B – OCTOBER 2013 – REVISED JANUARY 2014
WIDE RANGE SYNCHRONOUS BUCK CONTROLLER
Check for ...
LM5116-HT
www.ti.com
SLVSBS8B – OCTOBER 2013 – REVISED JANUARY 2014
WIDE RANGE SYNCHRONOUS BUCK CONTROLLER
Check for Samples: LM5116-HT
FEATURES
1
2 Emulated Peak Current Mode Wide Operating Range Up to 80 V Low IQ Shutdown (< 10 µA) Drives Standard or Logic Level MOSFETs Robust 3.5-A Peak Gate Drive Free-Run or Synchronous Operation to 1 MHz Optional Diode Emulation Mode Programmable Output from 1.215 V to 80 V Precision 1.5% Voltage Reference Programmable Current Limit Programmable Soft-Start Programmable Line Under-Voltage Lockout Automatic Switch to External Bias Supply
APPLICATIONS
Down-Hole Drilling High Temperature Environments
SUPPORTS EXTREME TEMPERATURE APPLICATIONS
Controlled Baseline
One Assembly and Test Site
One Fabrication Site
Available in Extreme (–55°C to 175°C) Temperature Range
Extended Product Life Cycle
Extended Product-Change Notification
Product Traceability
Texas Instruments' high temperature products utilize highly optimized silicon (die) solutions with design and process enhancements to maximize performance over extended temperatures.
DESCRIPTION
The LM5116 is a synchronous buck controller intended for step-down
regulator applications from a high voltage or widely varying input supply. The control method is based upon current mode control utilizing an emulated current ramp. Current mode control provides inherent line feed-forward, cycle by cycle current limiting and ease of loop compensation. The us...