LM5019MR/NOPB Part Information
Details for LM5019MR/NOPB by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
Part Description
The LM5019 is a 100-V, 100-mA synchronous stepdown regulator with integrated high-side and low-side MOSFETs. The constant-on-time (COT) control scheme employed in the LM5019 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 LM5019 device is available in WSON-8 and SO PowerPAD-8 plastic packages.
Part Downloads
Download PCB Footprint from Ultra Librarian
Part Features
- Adjustable Output Voltage from 1.225 V
- Adjustable Undervoltage Lockout
- Constant On-Time Control
- Frequency Adjustable to 1 MHz
- Integrated 100-mA High-Side and Low-Side Switches
- Intelligent Peak Current Limit
- Nearly Constant Operating Frequency
- No Loop Compensation Required
- No Schottky Required
- Packages:
- Precision 2% Feedback Reference
- Remote Shutdown
- Thermal Shutdown
- Ultra-Fast Transient Response
- Wide 7.5-V to 100-V Input Range
Part Specifications
| Topology | Synchronous Buck (Step Down) |
| Input Voltage Min | 7.5V |
| Input Voltage Max | 100V |
| No. of Outputs | 1Outputs |
| DC / DC Converter IC Case | HSOP |
| No. of Pins | 8Pins |
| Output Current | 100mA |
| Output Voltage Min | 1.225V |
| Output Voltage Max | 90V |
| Switching Frequency | 1MHz |
| Operating Temperature Max | 125°C |
| Product Range | - |
| Automotive Qualification Standard | - |
| RoHS Phthalates Compliant | Yes |
| MSL | MSL 3 - 168 hours |
| SVHC | No SVHC (27-Jun-2018) |
Alternative Part Descriptions
- DC/DC CONV, SYNC BUCK, 1MHZ, HSOP-8; Topology:Synchronous Buck (Step Down); Input Voltage Min:7.5V; Input Voltage Max:100V; No. of Outputs:1Outputs; DC / DC Converter IC Case:HSOP; No. of Pins:8Pins; Output Current:100mA; Output RoHS Compliant: Yes | Newark Electronics
- 7.5-100V Wide Vin, 100mA Constant On-Time Synchronous Buck Regulator | Texas Instruments