3 از 5.0 با 1 رای
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آی سی اینورتر مدل TPS60400 یک چیپ معکوس کننده ولتاژ ورودی در محدوده 1.6 ولت تا 5.5 ولت است و خروجی آن به صورت غیر رگوله شده می باشد و برای ساخت یک مدار تغذیه منفی کافیست تا سه خازن یک میکروفارادی به پایه های آن متصل گردد. جریان خروجی این آی سی، حداکثر به 20 میلی آمپر می رسد و پکیج آن به صورت SOT23 با 5 پین است.
مستندات:
دیتاشیت TPS60400
Description:
The TPS6040x family of devices generates an unregulated negative output voltage from an input voltage ranging from 1.6 V to 5.5 V. The devices are typically supplied by a preregulated supply rail of 5 V or 3.3 V. Due to its wide input voltage range, two or three NiCd, NiMH, or alkaline battery cells, as well as one Li-Ion cell can also power them.
Only three external 1-μF capacitors are required to build a complete DC-DC charge pump inverter. Assembled in a 5-pin SOT-23 package, the complete converter can be built on a 50-mm2 board area.
Additional board area and component count reduction is achieved by replacing the Schottky diode that is typically needed for start-up into load by integrated circuitry.
The TPS6040x can deliver a maximum output current of 60 mA with a typical conversion efficiency of greater than 90% over a wide output current range.
Three device options with 20-kHz, 50-kHz, and 250-kHz fixed-frequency operation are available.
TPS60400 comes with a variable switching frequency to reduce operating current in applications with a wide load range and enables the design with low value capacitors.
Application:
Automotive Infotainment
Automotive Cluster
LCD Displays
Negative Supply Voltages
Features:
Inverts Input Supply Voltage
Up to 60-mA Output Current
Only Three Small 1-μF Ceramic Capacitors Needed
Input Voltage Range From 1.6 V to 5.5 V
Power Save-Mode for Improved Efficiency at Low-Output Currents (TPS60400)
Device Quiescent Current Typical 65 μA
Integrated Active Schottky-Diode for Start-up Into Load
Small 5-Pin SOT-23 Package
Evaluation Module Available TPS60400EVM-178