LM2742MTC

switching regulator controller, TSSOP-14, 7V, Current limit, Soft start

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Price:: US $1.20~1.50 / piece [Get Latest Price]

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	US $1.20~1.50

PartNumber:: LM2742MTC

Brand:: National Semiconductor - NS | Pack: TSSOP | D/C: 09+

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Products Upload time: 2011-07-22

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Product Summary

The LM2742MTC is a high-speed, synchronous, switching regulator controller. It is intended to control currents of 0.7A to 20A with up to 95% conversion efficiencies. Power up and down sequencing is achieved with the power-good flag, adjustable soft-start and output enable features. The LM2742MTC operates from a low-current 5V bias and can convert from a 1V to 16V power rail. The part utilizes a fixedfrequency, voltage-mode, PWM control architecture and the switching frequency is adjustable from 50kHz to 2MHz by setting the value of an external resistor. The applications of the LM2742MTC include POL power supply modules, Cable Modems, Set-Top Boxes/ Home Gateways, DDR Core Power, High-Efficiency Distributed Power, Local Regulation of Core Power.

Parametrics

LM2742MTC absolute maximum ratings: (1)VCC: 7V; (2)BOOTV: 21V; (3)LG and HG to GND: -2V to 21V; (4)Junction Temperature: 150℃; (5)Storage Temperature: -65℃ to 150℃; (6)Soldering Information, Lead Temperature (soldering, 10sec): 260℃; (7)Infrared or Convection (20sec): 235℃; (8)ESD Rating: 2 kV.

Features

LM2742MTC features: (1)Input power from 1V to 16V; (2)Output voltage adjustable down to 0.6V; (3)Power Good flag, adjustable soft-start and output enable for easy power sequencing; (4)Reference Accuracy: 1.5% (0℃ - 125℃); (5)Current limit without sense resistor; (6)Soft start; (7)Switching frequency from 50 kHz to 2 MHz; (8)40ns typical minimum on-time; (9)TSSOP-14 package.