MAX1845EEI-T

dual PWM controller, 6V, QSOP

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Price:: US $1.27~1.28 / piece [Get Latest Price]

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PartNumber:: MAX1845EEI-T

Brand:: Maxim Integrated Products - Maxim | Pack: QSOP | D/C: 04+

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

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Products Upload time: 2012-05-29

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Part Number:MAX1845EEI-T
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Product Summary

The MAX1845EEI-T is a dual PWM controller configured for step－down (buck) topologies that provides high efficiency, excellent transient response, and high DC output accuracy necessary for stepping down high－voltage batteries to generate low－voltage chipset and RAM power supplies in notebook computers. The CS_ inputs can be used with low－side sense resistors to provide accurate current limits or can be connected to LX_, using low－side MOSFETs as current－sense elements. The on－demand PWM controllers are free running, constant on－time with input feed－forward. The MAX1845EEI-T configuration provides ultra－fast transient response, wide input－output differential range, low supply current, and tight load－regulation characteristics. The MAX1845EEI-T is simple and easy to compensate.

Parametrics

MAX1845EEI-T absolute maximum ratings: (1)V+ to AGND: －0.3 to +30V; (2)VCC to AGND: －0.3V to +6V; (3)VDD to PGND: －0.3V to +6V; (4)AGND to PGND: －0.3V to +0.3V; (5)PGOOD, OUT_ to AGND: －0.3V to +6V; (6)Operating Temperature Range : －40℃ to +85℃; (7)Junction Temperature: +150℃; (8)Storage Temperature Range : －65℃ to +150℃; (9)Lead Temperature (soldering, 10s): +300℃.

Features

MAX1845EEI-T features: (1)Ultra－High Efficiency; (2)Accurate Current－Limit Option; (3)Quick－PWMTM with 100ns Load－Step Response; (4)1% VOUT Accuracy over Line and Load; (5)Dual ModeTM Fixed 1.8V/1.5V/Adj or 2.5V/Adj Outputs; (6)Adjustable 1V to 5.5V Output Range; (7)2V to 28V Battery Input Range; (8)200/300/420/540kHz Nominal Switching Frequency; (9)Adjustable Overvoltage Protection; (10)1.7ms Digital Soft－Start; (11)Drives Large Synchronous－Rectifier FETs; (12)Power－Good Window Comparator; (13)2V ±1% Reference Output.