95 - Blogs - Shenzhen Slkor Micro Semicon Co., Ltd.

【Daily Highlight】SL4054 Linear Li-Ion Charger

The Slkor?4054 is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries. Its SOP package and low external component count make the SL4054 ideally suited for portable applications. Furthermore, the SL4054 can work within USB and wall adapter. No blocking diode is required due to the internal PMOSFET architecture and have prevent to negative Charge Current Circuit. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The SL4054 automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached. When removing input power automatically puts the SL4054 into a low current mode to reduce the battery's leakage current to below 2uA, and the shutdown mode reduces supply current to 45μA. SL4054 Other features include current monitor, under voltage lockout, automatic recharge and two status pin to indicate charge termination and the presence of an input voltage. The Slkor? SL4054 is available in a SOT23-5 (ThinSOTTM) package.
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【Daily Highlight】SL4949 Linear Voltage Regulators (LDO)

SL4949 is a low voltage drop LDO voltage regulator with the output voltage of 5V, integrated with the power on reset function and the input voltage monitoring function in the chip. SL4949 can provide stable supply voltage for the control system of micro-processors,with typical output current as high as 100mA and transient input voltage of 42V,and is very suitable for applications in working environment of automotive electronics. Supporting Reset output,it can be applied to logic control of micro-processors,in addition, it supports Sense monitoring,and can output the waming signal before the output of the reset signal.Reasonable use ofthe Sense monitoring function can make micro-processors conduct necessary treatment measures before the stop of micro-processors with Reset.
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【Daily Highlight】SL42744D Low dropout Linear Voltage Regulator

Today,wewillintroducetheSL42744DLowdropoutLinearVoltageRegulator. Description ●SL42744D is a 3-pin TO package one-chip integrated voltage regulator,with the suggested maximum driving current of 400mA and chip package of TO252-3.The chip is a
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When it comes to SiC taken to the extreme, what are the options and future prospects?(II)

The remarkable rise of the global silicon carbide (SiC) market has undoubtedly attracted attention. As early as 2017, the transition from silicon to SiC in power semiconductor applications began with the installation of SiC in Tesla's Model 3. In 2019, chip manufacturer Wolfspeed chose the Nanocenter facility near Utica, New York, to build the world's first 200mm SiC factory in the United States. The factory was completed in April 2022.
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When it comes to SiC taken to the extreme, what are the options and future prospects?(I)

The remarkable rise of the global silicon carbide (SiC) market has undoubtedly attracted attention. As early as 2017, the transition from silicon to SiC in power semiconductor applications began with the installation of SiC in Tesla's Model 3. In 2019, chip manufacturer Wolfspeed chose the Nanocenter facility near Utica, New York, to build the world's first 200mm SiC factory in the United States. The factory was completed in April 2022.
Since then, the SiC gold rush in the United States has transformed into a global investment frenzy, primarily driven by the increasing demand for electric vehicles. While silicon carbide is clearly a key technology for the future of semiconductors, as it enters the mainstream power electronics market, does it face the risk of quickly becoming commoditized?
In this article, Stephen Rothrock, the founder and CEO of ATREG, Jean-Christophe Eloy, President, and founder of Yole Group, and Poshun Chiu, Senior Technology and Market Analyst at Yole Intelligence, outline the global SiC market and their predictions for the future of this revolutionary technology.
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【Daily Highlight】LM317 Adjustable Output Positive Voltage Regulators

The LM317 is an adjustable 3?terminal positive voltage regulator capable of supplying in excess of 1.5 A over an output voltage range of 1.2 V to 37 V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blow?out proof.
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【Daily Highlight】1117-5.0 1A Low dropout Voltage Regulator

The 1117 is a series of low dropout voltage regulators which can provide up to 1A of output current. The 1117 is available in six fixed voltage, 1.2, 1.5, 1.8, 2.5, 3.3 and 5.0V.Additionally it is also available in adjustable version. On chip precision trimming adjusts the reference/output voltage to within 2%.On-chip thermal limiting provides protection against any combination of overload and ambient temperatures that would create excessive junction temperatures. The 1117 series is available in SOT-223.TO-252.SOT89 packages. A minimum of 10uF tantalum capacitor is required at the output to improve the transient response and stability.
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【Daily Highlight】SL78L12 3-Terminal Voltage Regulators

The 78L12 is a SURFACE MOUNT low-dropout voltage regulator that is capable of providing a regulated 12VDC output at a current up to 100mA. The low-dropout functionality enables this voltage regulator to work with a supply voltage only 1.7V higher than the output voltage. This is a tiny, but hand-solderable 3-Lead SOT-89 package.
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selectivity and Cost Control in Etching Processes (III)

Plasma etching may be the most critical process in semiconductor manufacturing, and it can also be one of the most complex operations in all wafer fabrication processes, second only to lithography. Nearly half of the wafer manufacturing steps rely on plasma, a high-energy ionized gas, to perform their tasks.
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selectivity and Cost Control in Etching Processes (II)

Plasma etching may be the most critical process in semiconductor manufacturing, and it can also be one of the most complex operations in all wafer fabrication processes, second only to lithography. Nearly half of the wafer manufacturing steps rely on plasma, a high-energy ionized gas, to perform their tasks.
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