LM5166DRCR Description
The LM5166DRCR is a 3-V to 65-V ultra-low IQ synchronous buck converter with outstanding efficiency over a wide range of input voltage and load current. Up to 500 mA of output current can be provided using integrated high-side and low-side power MOSFETs at fixed output voltages of 3.3 V or 5 V, or an adjustable output. The converter is intended to make implementation as simple as possible while also giving choices for optimizing performance for the target application. For best light-load efficiency, pulse frequency modulation (PFM) mode is chosen, or constant on-time (COT) control is chosen for a nearly constant operating frequency. Both control techniques provide outstanding line and load transient response and quick PWM on-time for large step-down conversion ratios while requiring no loop correction.
LM5166DRCR Features
? Internally or externally adjustable 900-second soft start
? Ultra-High Light-Load Efficiency with Diode Emulation and Pulse Skipping
? No Bootstrap Components or Loop Compensation
? Enable and input UVLO with hysteresis precision
? Open-Drain Power Indicator Is a Good Indicator
? Hysteresis Thermal Shutdown Protection
LM5166DRCR Applications
? Automated Manufacturing and Buildings
? Battery-powered and automotive applications
? LDO Replacement at High Voltage
? Bias Supplies with Low Power
