Monthly Archives: December 2017

LTC3789 High Efficiency Buck-Boost Regulator

Posted on December 31, 2017 by

Package The Linear Technology High Efficiency, Synchronous, 4 -Switch Buck-Boost Controller is a very sophisticated voltage regulator capable of regulating an output voltage to 1% from an input voltage range of 4V to 38V that can be above or below … Continue reading →

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Rohm BA6860FS 3-phase Motor Driver

Posted on December 29, 2017 by

Package From 1994 another chip from the JVC Camcorder.  This one was located on an area of the board labeled “SERVO” so I guessed it was a motor driver.I was somewhat surprised to manage to find a datasheet.  Turns out … Continue reading →

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Motorola MC6802

Posted on December 24, 2017 by

A few months ago I looked at a Motorola MC6800 bought on eBay that was branded with a Freescale logo, contained an Hitachi fabricated die (probably from late 80’s or early 90’s) and had a 2016 assembly date code.  Reader Jeremy … Continue reading →

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HCF4007U Dual Complementary Pair plus Inverter

Posted on December 15, 2017 by

Integrated circuits do not get any simpler than this. This is an HCF4007U made by ST with a week 27 1993 date code According to the datasheet it can be, depending on the pin connections, either 3 inverters, a 3 … Continue reading →

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