Product Summary

The LM25085QMY 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. The LM25085QMY 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 ultra-fast load transient response.

Parametrics

LM25085QMY absolute maximum ratings: (1)VIN to GND: -0.3V to 45V; (2)ISEN to GND: -0.3V to VIN + 0.3V; (3)ADJ to GND: -0.3V to VIN + 0.3V; (4)RT, FB to GND: -0.3V to 7V; (5)VIN to VCC, VIN to PGATE: -0.3V to 10V; (6)ESD Rating Human Body Model: 2kV; (7)Storage Temperature Range: -65℃ to +150℃.

Features

LM25085QMY features: (1)LM25085Q is an Automotive Grade product that is AECQ100 grade 1 qualified (-40℃ to 125℃ operating junction temperature); (2)Wide 4.5V to 42V input voltage range; (3)Adjustable current limit using RDS(ON) or a current sense resistor; (4)Programmable switching frequency to 1MHz; (5)No loop compensation required; (6)Ultra-Fast transient response; (7)Nearly constant operating frequency with line and load variations; (8)Adjustable output voltage from 1.25V; (9)Precision ±2% feedback reference; (10)Capable of 100% duty cycle operation; (11)Internal soft-start timer; (12)Integrated high voltage bias regulator; (13)Thermal shutdown.

Diagrams

LM25085QMY block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LM25085QMY/NOPB
LM25085QMY/NOPB

National Semiconductor (TI)

DC/DC Switching Controllers

Data Sheet

0-1: $1.48
1-25: $1.20
25-100: $1.08
100-250: $0.96
LM25085QMYE/NOPB
LM25085QMYE/NOPB

National Semiconductor (TI)

DC/DC Switching Controllers

Data Sheet

0-1: $1.48
1-25: $1.20
25-100: $1.08
100-250: $0.96
LM25085QMYX/NOPB
LM25085QMYX/NOPB

National Semiconductor (TI)

DC/DC Switching Controllers

Data Sheet

0-1: $1.48
1-25: $1.20
25-100: $1.08
100-250: $0.96