LM25085MYE/NOPB Part Information
Details for LM25085MYE/NOPB by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
Part Description
The LM25085 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, efficient buck regulator for a wide range of applications. This high voltage controller contains a PFET gate driver and a high voltage bias regulator which operates over a wide 4.5V to 42V input range. The constant on-time regulation principle requires no loop compensation, simplifies circuit implementation, and results in ultrafast load transient response. The operating frequency remains nearly constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The PFET architecture allows 100% duty cycle operation for a low dropout voltage. Either the RDS(ON) of the PFET or an external sense resistor can be used to sense current for overcurrent detection.
Part Downloads
Download PCB Footprint from Ultra Librarian
Part Features
- Adjustable Current Limit Using RDS(ON) or a Current Sense Resistor
- Adjustable Output Voltage from 1.25V
- Capable of 100% Duty Cycle Operation
- Integrated High Voltage Bias Regulator
- Internal Soft-Start Timer
- LM25085-Q1 is an Automotive Grade product that is AEC-Q100 Grade 1 Qualified (-40u00b0C to 125u00b0C Operating Junction Temperature)
- Nearly Constant Operating Frequency with Line and Load Variations
- No Loop Compensation Required
- Precision u00b12% Feedback Reference
- Programmable Switching Frequency to 1MHz
- Thermal Shutdown
- Ultra-Fast Transient Response
- Wide 4.5V to 42V Input Voltage Range
Part Specifications
| Supply Voltage Min | 4.5V |
| Supply Voltage Max | 42V |
| No. of Outputs | 1 Output, 1Outputs |
| Duty Cycle (%) | 100% |
| Controller IC Case Style | MSOP |
| No. of Pins | 8Pins |
| Switching Frequency | 1MHz |
| Topology | Buck (Step Down) |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 125°C |
| Product Range | - |
| Automotive Qualification Standard | - |
| RoHS Phthalates Compliant | Yes |
| MSL | MSL 1 - Unlimited |
| SVHC | No SVHC (27-Jun-2018) |
| Adjustable Output Voltage Min | 1.25V |
| Frequency | 1MHz |
| Operating Temperature Range | -40°C to +125°C |
| Output Current | 10A |
| Output Current Max | 500mA |
| Output Voltage | 42V |
| Primary Input Voltage | 42V |
| Termination Type | Surface Mount Device |
| Voltage Regulator Type | Step Down (Buck) |
Alternative Part Descriptions
- DC-DC Controller Buck 4.5-42Vin MSOP8 EP | RS Components
- PFET BUCK SWITCHING CONTROLLER MSOP-8; S; MSL:MSL 1 - Unlimited; SVHC:No SVHC (15-Jan-2019) RoHS Compliant: Yes | Newark Electronics
- 4.5-42V Wide Vin, Constant On-Time Non-Synchronous PFET Buck Controller | Texas Instruments