Product Summary

The LM3485MM is one member of the LM3485 series which is a high efficiency PFET switching regulator controller that a system designer can use to quickly and easily develop a small, low cost,switching buck regulator for a wide range of applications.And the PFET architecture also allows for low component count as well as ultra-low dropout operation. The applications of the device include n Set-Top Box, DSL/Cable Modem, PC/IA, Auto PC, TFT Monitor, Battery Powered Portable Applications, Distributed Power Systems and Always On Power.

Parametrics

LM3485MM absolute maximum ratings: (1)storage temperature:-65℃ to 150℃;(2)lead temperature(vapor phase(60 sec.)):215℃;(3)lead temperature(Infared (15 sec.)):220℃;(4)ESD susceptibilty(human body model):2kV;(5)power dissipation:417mW;(6)maximum junction temp.:150℃;(7)ADJ voltage:-0.3V to 36V;(8)ISENSE voltage:-1.0V to 36V;(9)FB voltage:-0.3V to 5V;(10)PGATE voltage:-0.3V to 36V;(11)VIN voltage:-0.3V to 36V.

Features

LM3485MM features: (1)no control loop compensation required;(2)easy to use control methodology;(3)MSOP-8;(4)current limit protection;(5)maximum operating frequency >1MHz;(6)100% duty cycle;(7)±1.3% (±2% over temp) internal reference;(8)high efficiency 93%;(9)1.242V to Vin adjustable output range;(10)4.5V to 35V wide input range.Also it can be used in set-top box,DSL/cable modem,PC/IA,auto PC,TFT monitor,battery powered portable applications and distributed power systems,always on power.

Diagrams

LM3485MM connection diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LM3485MM
LM3485MM

National Semiconductor (TI)

DC/DC Switching Controllers

Data Sheet

0-1000: $0.35
1000-2000: $0.34
LM3485MM/NOPB
LM3485MM/NOPB

National Semiconductor (TI)

DC/DC Switching Controllers HYSTERETIC PFET BUCK CONTROLLER

Data Sheet

0-1: $0.70
1-10: $0.63
10-25: $0.56
25-100: $0.38
LM3485MMX/NOPB
LM3485MMX/NOPB

National Semiconductor (TI)

DC/DC Switching Controllers

Data Sheet

0-1: $0.70
1-10: $0.63
10-25: $0.56
25-100: $0.38
LM3485MMX
LM3485MMX

National Semiconductor (TI)

DC/DC Switching Controllers

Data Sheet

0-3500: $0.34