LM3485MM

LM3485MM, MSOP, hysteretic PFET buck controller, -0.3V to 36V, 2kV

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Price:: US $0.30~0.50 / piece [Get Latest Price]

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Qty (lots)	Price/lot
1 ~ 1000 :	0.50 / Piece
1001 ~ 10000 :	0.40 / Piece
10001 ~ 100000 :	0.30 / Piece

PartNumber:: LM3485MM

Brand:: National Semiconductor - NS | Pack: MSOP | D/C: 13+

Availability:: Supply Ability: 10000/Day Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

Quantity:: piece

Total Price:: US $0

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Products Upload time: 2013-07-26

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Part Number:LM3485MM
US $0.30 - 0.50
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Product Summary

The LM3485MM 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. The use of a hysteretic control scheme provides for simple design without any control loop stability concerns using a wide variety of external components. The PFET architecture also allows for low component count as well as ultra-low dropout operation. Another benefit is high efficiency operation at light loads without an increase in output ripple. Current limit protection circuit is provided by measuring the voltage across the PFET RDSON thus eliminating a costly sense resistor. The current limit can be adjusted allowing for designs at various output currents and costs. The LM3485MM can be applied in 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)VIN Voltage: -0.3V to 36V; (2)PGATE Voltage: -0.3V to 36V; (3)FB Voltage: -0.3V to 5V; (4)ISENSE Voltage: -1.0V to 36V; (5)ADJ Voltage: -0.3V to 36V; (6)Maximum Junction Temp: 150°C; (7)ESD Susceptibilty Human Body Model (Note 3): 2kV; (8)Storage Temperature: -65 to 150°C; (9)Supply Voltage: 4.5V to 35V; (10)Temperature: -40 to +125°C.

Features

LM3485MM features: (1)Easy to use control methodology; (2)No control loop compensation required; (3)4.5V to 35V wide input range; (4)1.242V to VIN adjustable output range; (5)High Efficiency 93%; (6)±1.3% (±2% over temp) internal reference; (7)100% duty cycle; (8)Maximum operating frequency > 1MHz; (9)Current limit protection; (10)MSOP-8.