LTC7820 – Fixed Ratio High Power Inductorless (Charge Pump) DC/DC Controller
IC

LTC7820 – Fixed Ratio High Power Inductorless (Charge Pump) DC/DC Controller

The LTC7820 is a fixed ratio high voltage high power switched capacitor/charge pump controller. The device includes four N-channel MOSFET gate drivers to drive external power MOSFETs in voltage divider, doubler or inverter configurations. The device achieves a 2:1 stepdown ratio from...

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CP2615 USB-I2S Bridge – A New Solution from Silicon Labs
IC

CP2615 USB-I2S Bridge – A New Solution from Silicon Labs

Apple said goodby to 3.5mm audio jack in Iphone 7 by adding the audio signal to USB plug besides the other functionalities. While Iphone is a pioneer brand, a lot of manufacturers in the near future will drop that analog jack. However, your ear responds to analog signals only. So either...

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Reverse engineering the 76477 sound effect chip
IC

Reverse engineering the 76477 sound effect chip

Ken Shirriff has written an article on reverse engineering the 76477 “Space Invaders” sound effect chip: Remember the old video game Space Invaders? Some of its sound effects were provided by a chip called the 76477 Complex Sound Generation chip. While the sound effects1 produced...

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Motor driver fits small IoT devices
IC

Motor driver fits small IoT devices

Susan Nordyk @ edn.com: A single-chip 2.6 A driver for brushed DC motors, STMicroelectronics’ STSPIN250 targets battery-powered portable and wearable applications. This low-voltage, energy-efficient driver integrates a power MOSFET bridge and fixed off-time PWM current controller...

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Fuel gauge needs no battery characterization
IC

Fuel gauge needs no battery characterization

by Susan Nordyk @ edn.com The MAX17055 single-cell fuel gauge from Maxim not only eliminates battery characterization, but also keeps SOC (state-of-charge) error to within 1% in most scenarios. With its ModelGauge m5 EZ algorithm, the device provides tolerance against battery...

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LT8641 – 65V, 3.5A Synchronous Step-Down Silent Switcher
IC

LT8641 – 65V, 3.5A Synchronous Step-Down Silent Switcher

The LT8641 is a monolithic, constant frequency, current mode synchronous (external schottky diode is not necessary) step-down switching regulator. Its 3V to 65V input voltage range makes it ideal for 12V or 24V automotive and industrial applications. It delivers up to 3.5A of...

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Teardown of a TDA7375 audio amplifier IC
IC

Teardown of a TDA7375 audio amplifier IC

A teardown of a TDA7375 audio amplifier IC from Electronupdate: The TDA7375 audio power amplifier. Another example of a long-lived integrated circuit.  1st introduced in 1998… looks like it’s still being made. Teardown of a TDA7375 audio amplifier IC -...

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Sensirion solves long-standing stability problem in metal-oxide gas sensors
IC

Sensirion solves long-standing stability problem in metal-oxide gas sensors

At this year’s Sensor+Test 2017 in Nuremberg (May 30 – June 1), Sensirion AG, the expert in environmental and flow sensor solutions, introduces the SGP – a siloxane resistant metal-oxide gas sensor with unprecedented long-term stability. The SGP gas sensor is based on...

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