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Texas Instruments LM5166 | Demoboard TIDA-01386
Ultrasonic Distance Sensor with IO-Link Reference Design
Overview
| Topology | Buck Converter |
| Input voltage | 6-36 V |
| Switching frequency | 100-600 kHz |
| Output 1 | 5 V |
| IC revision | E1 |
Description
The LM5166 is a compact, easy-to-use, 3-V to 65-V, ultra-low IQ synchronous buck converter with high efficiency over wide input voltage and load current ranges. With integrated high-side and low-side power MOSFETs, up to 500 mA of output current can be delivered at fixed output voltages of 3.3 V or 5 V, or an adjustable output. The converter is designed to simplify implementation while providing options to optimize the performance for the target application. Pulse frequency modulation (PFM) mode is selected for optimal light-load efficiency or constant on-time (COT) control for nearly constant operating frequency. Both control schemes do not require loop compensation while providing excellent line and load transient response and short PWM on-time for large step-down conversion ratios.The high-side P-channel MOSFET can operate at 100% duty cycle for lowest dropout voltage and does not require a bootstrap capacitor for gate drive. Also, the current limit setpoint is adjustable to optimize inductor selection for a particular load current requirement. Selectable and adjustable start-up timing options include minimum delay (no soft start), internally fixed (900 µs), and externally programmable soft start using a capacitor. An open-drain PGOOD indicator can be used for sequencing, fault reporting, and output voltage monitoring. The LM5166 is available in a 10-pin VSON package with 0.5-mm pin pitch.
Features
Wide Input Voltage Range of 3 V to 65 V9.7-µA No-Load Quiescent Current–40°C to 150°C Junction Temperature RangeFixed (3.3-V, 5-V) or Adjustable VOUT OptionsMeets EN55022 / CISPR 22 EMI StandardsIntegrated 1-Ω PFET Buck SwitchSupports 100% Duty Cycle for Low DropoutIntegrated 0.5-Ω NFET Synchronous RectifierEliminates External Schottky DiodeProgrammable Peak Current Limit Supports:500-mA, 300-mA, or 200-mA LoadsSelectable PFM or COT Mode Operation1.223-V ±1.2% Internal Voltage ReferenceSwitching Frequency up to 600 kHz900-µs Internal or Externally-Adjustable Soft StartDiode Emulation and Pulse Skipping for Ultra-High Light-Load EfficiencyNo Loop Compensation or Bootstrap ComponentsPrecision Enable and Input UVLO With HysteresisOpen-Drain Power Good IndicatorThermal Shutdown Protection With HysteresisPin-to-Pin Compatible With the LM516510-Pin, 3-mm × 3-mm VSON PackageCreate a Custom Regulator Design Using WEBENCH® Power Designer
Typical applications
- Industrial I/O Modules
- Programmable Logic Controllers (PLCs)
- Communication Modules
- Automotive,Fieldbus
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | Q(%) | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IR(A) | IRP,40K(A) | ISAT(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(Ω) | fres(MHz) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 10 V(DC), 22 pF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 10 V(DC) | Capacitance22 pF | Capacitance±5% | Rated Voltage10 V (DC) | Size0402 | Operating Temperature -55 °C up to +125 °C | Q-Factor840 % | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length1 mm | Width0.5 mm | Height0.5 mm | Pad Dimension0.25 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 100 pF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 pF | Capacitance±5% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 150 pF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance150 pF | Capacitance±5% | Rated Voltage50 V (DC) | Size0402 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length1 mm | Width0.5 mm | Height0.5 mm | Pad Dimension0.25 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 1 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance1 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 10 V(DC), 1 µF, ±20% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 10 V(DC) | Capacitance1 µF | Capacitance±20% | Rated Voltage10 V (DC) | Size0402 | Operating Temperature -55 °C up to +85 °C | – | Dissipation Factor15 % | Insulation Resistance0.05 GΩ | Ceramic TypeX5R Class II | Length1 mm | Width0.5 mm | Height0.5 mm | Pad Dimension0.25 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | |||||
 | WE-PD2 SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD2 SMT Power Inductor | – | – | – | Size4532 | Operating Temperature -40 °C up to +125 °C | – | – | – | – | Length4 mm | Width4.5 mm | Height3.2 mm | – | – | Inductance47 µH | Rated Current0.68 A | Performance Rated Current0.8 A | Saturation Current0.77 A | Saturation Current @ 10%0.85 A | Saturation Current @ 30%0.98 A | DC Resistance0.844 Ω | Self Resonant Frequency17 MHz |