LM25085MME/NOPB Part Information

Details for LM25085MME/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.

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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
Duty Cycle (%) 100%
Controller IC Case Style VSSOP
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 -
MSL -
SVHC No SVHC (27-Jun-2018)
RoHS Compliant

Alternative Part Descriptions

  • PFET BUCK SWITCHING CONTROLLER MSOP-8; Supply Voltage Min:4.5V; Supply Voltage Max:42V; No. of Outputs:1 Output; Duty Cycle (%):100%; Controller IC Case Style:MSOP; No. of Pins:8Pins; Switching Frequency:1MHz; Product Range:- RoHS Compliant: Yes | Newark Electronics
  • 4.5-42V Wide Vin, Constant On-Time Non-Synchronous PFET Buck Controller | Texas Instruments
  • Switching Regulator IC [Texas Instruments] LM25085MME/NOPB Switching Regulator IC | Distrelec

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