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Texas Instruments LM5018 | Demoboard TIDA-00210
LM5018 100-V, 300-mA Constant On-Time Synchronous Buck Regulator
Overview
| Topology | Buck Converter |
| Input voltage | 12-95 V |
| Output 1 | 12 V / 0.05 A |
| IC revision | E1 |
Description
The LM5018 is a 100-V, 300-mA synchronous step-down regulator with integrated high-side and low-side MOSFETs. The constant-on-time (COT) control scheme employed in the LM5018 device requires no loop compensation, provides excellent transient response, and enables very low step-down ratios. The on-time varies inversely with the input voltage resulting in nearly constant frequency over the input voltage range. A high-voltage startup regulator provides bias power for internal operation of the IC and for integrated gate drivers.
A peak current limit circuit protects against overload conditions. The undervoltage lockout (UVLO) circuit allows the input undervoltage threshold and hysteresis to be independently programmed. Other protection features include thermal shutdown and bias supply undervoltage lockout.
The LM5018 device is available in WSON-8 and SO PowerPAD-8 plastic packages.
Features
- Wide 7.5 V to 100 V Input Range
- Integrated 100 V, High and Low Side Switches
- No Schottky Required
- Constant On-time Control
- No Loop Compensation Required
- Ultra-Fast Transient Response
- Nearly Constant Operating Frequency
- Intelligent Peak Current Limit
- Adjustable Output Voltage from 1.225 V
- Precision 2% Feedback Reference
- Frequency Adjustable to 1 MHz
- Adjustable Undervoltage Lockout
- Remote Shutdown
- Thermal Shutdown
- Packages:
- WSON-8
- SO PowerPAD-8
Typical applications
- Telecommunication Systems
- Isolated Bias Supply
- Brush DC Motors
- Bipolar Stepper Motors
- Brush DC Motors
- Automotive Electronics
- Bipolar Stepper Motors
- Smart Power Meters
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Application | PCB/Cable/Panel | Modularity | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | Q | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IR (mA) | IR 2 (mA) | ISAT (mA) | RDC (mΩ) | fres (MHz) | Endurance (h) | Operating Temperature | IRIPPLE (mA) | ILeak (µA) | Pitch (mm) | Ø D (mm) | Pins (Value) (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 691311500002 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-TBL Series 311 - 5.08 mm Open Vertical PCB Header | Pluggable | PCB | No | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | – | – | 10.16 | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | 5.08 | – | 2 | – | – | – | Vertical | 20 | Box | |
 | 691311500103 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-TBL Series 311 - 5.08 mm Close Vertical PCB Header | Pluggable | PCB | No | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | – | – | 17.24 | – | – | – | – | – | – | – | – | – | – | – | – | 5.08 | – | 3 | – | – | – | Vertical | 20 | Box | |
 | 74479887310A | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PMI Power Multilayer Inductor | – | – | – | – | – | – | – | – | – | – | – | – | – | 1008 | -40 °C up to +125 °C | 27 | – | – | – | 2.5 | 2 | – | 10 | 600 | 850 | 125 | 300 | 20 | – | -40 °C up to +125 °C | – | – | – | – | 2 | – | 0.8 | – | High Saturation Current | – | – | ||
 | 74404041101 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LQS SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | – | – | – | 4012 | -40 °C up to +125 °C | – | – | – | – | 4 | 4 | – | 100 | – | – | 300 | 1697 | 10 | – | -40 °C up to +125 °C | – | – | – | – | – | – | 1.2 | – | – | 0.43 | – | ||
 | 150060RS75000 | SPEC | 25 files RAY files
| Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | – | – | – | 625 | Red | 630 | 250 | 2 | AlInGaP | 140 | – | – | – | 0603 | -40 °C up to +85 °C | – | – | – | – | 1.6 | 0.8 | – | – | – | – | – | – | – | – | -40 °C up to +85 °C | – | – | – | – | – | – | 0.7 | – | – | – | Tape and Reel | ||
| 150060GS75000 | SPEC | 25 files RAY files
| Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | – | – | – | 525 | Green | 515 | 430 | 3.2 | InGaN | 140 | – | – | – | 0603 | -40 °C up to +85 °C | – | – | – | – | 1.6 | 0.8 | – | – | – | – | – | – | – | – | -40 °C up to +85 °C | – | – | – | – | – | – | 0.7 | – | – | – | Tape and Reel | ||
 | 860040875005 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-ATUL Aluminum Electrolytic Capacitors | – | – | – | – | – | – | – | – | – | – | 100 µF | ±20% | 100 | – | – | – | 9 | – | – | 25 | – | – | – | – | – | – | – | – | 7000 | -40 °C up to +105 °C | 800 | 100 | 5 | 10 | – | – | – | – | – | – | Ammopack | ||
 | 885012205031 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 16 V(DC) | – | – | – | – | – | – | – | – | – | – | 10 nF | ±10% | 16 | 0402 | -55 °C up to +125 °C | – | 3.5 | 10 GΩ | X7R Class II | 1 | 0.5 | 0.25 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | 7" Tape & Reel | ||
| 885012205044 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | – | – | – | – | – | 1 nF | ±10% | 25 | 0402 | -55 °C up to +125 °C | – | 3.5 | 10 GΩ | X7R Class II | 1 | 0.5 | 0.25 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | 7" Tape & Reel | ||
| 885012205055 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | 100 pF | ±10% | 50 | 0402 | -55 °C up to +125 °C | – | 2.5 | 10 GΩ | X7R Class II | 1 | 0.5 | 0.25 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | 7" Tape & Reel | ||
| 885012106017 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 16 V(DC) | – | – | – | – | – | – | – | – | – | – | 1 µF | ±20% | 16 | 0603 | -55 °C up to +85 °C | – | 10 | 0.1 GΩ | X5R Class II | 1.6 | 0.8 | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
 | 61030421121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm SMT Dual Pin Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | 1000 MΩ | – | 5.08 | – | – | – | – | – | – | – | – | – | – | – | – | 2.54 | – | 4 | Dual | – | Pin Header | Straight | 3 | Tape and Reel with Cap | |
 | 61031221121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm SMT Dual Pin Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | 1000 MΩ | – | 15.24 | – | – | – | – | – | – | – | – | – | – | – | – | 2.54 | – | 12 | Dual | – | Pin Header | Straight | 3 | Tape and Reel with Cap |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Application | PCB/Cable/Panel | Modularity | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | Q | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | L (µH) | IR (mA) | IR 2 (mA) | ISAT (mA) | RDC (mΩ) | fres (MHz) | Endurance (h) | Operating Temperature | IRIPPLE (mA) | ILeak (µA) | Pitch (mm) | Ø D (mm) | Pins (Value) (pcs) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples |
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