Efficiently managing the power requirements of multi-cell battery applications is a critical design challenge. Slkor Micro's SL3763 standalone linear battery charger IC presents a robust and integrated solution tailored for 3-cell Li-Ion batteries. Capable of delivering up to 4A of charging current and incorporating essential features like automatic recharge and sleep mode, it simplifies design while ensuring reliability. This document delves into the SL3763's operation, provides a detailed typical application circuit for solar-powered lighting systems, and offers practical PCB layout guidelines to maximize performance. Discover how the SL3763 can serve as the cornerstone of your next portable industrial, medical, or backup power design.

Efficiently managing the power requirements of multi-cell battery applications is a critical design challenge. Slkor Micro's SL3763 standalone linear battery charger IC presents a robust and integrated solution tailored for 3-cell Li-Ion batteries. Capable of delivering up to 4A of charging current and incorporating essential features like automatic recharge and sleep mode, it simplifies design while ensuring reliability. This document delves into the SL3763's operation, provides a detailed typical application circuit for solar-powered lighting systems, and offers practical PCB layout guidelines to maximize performance. Discover how the SL3763 can serve as the cornerstone of your next portable industrial, medical, or backup power design.

Slkor's SL1609 Hall Element delivers ultra-low power consumption (<3.3μA) and omnipolar detection for precise, non-contact switching. Ideal for TWS earphones, laptops, power tools, and industrial automation, it enables smarter, more efficient designs with high ESD protection and flexible magnetic thresholds.

Slkor's SL1609 Hall Element delivers ultra-low power consumption (<3.3μA) and omnipolar detection for precise, non-contact switching. Ideal for TWS earphones, laptops, power tools, and industrial automation, it enables smarter, more efficient designs with high ESD protection and flexible magnetic thresholds.

Slkor’s SL27517A reduces BOM cost by 30% vs. TI UCC27517 while extending voltage range to 20V for battery-critical applications.

In an effort to strive to provide customers with a full range of complementary products, SLKOR has launched a series of user manuals for the demo boards of digital infrared thermopile non-contact temperature measurement application designs.

The core technical personnel of Shenzhen SLKOR Micro Semicon Co., Ltd. are from Tsinghua University and Yonsei University in South Korea. They lead the company's development with new materials, new processes and new products, and have mastered the internationally leading third-generation semiconductor silicon carbide power device technology relatively early.

To help customers make the most of SLKOR's products, the company has recently introduced the SL-W-TRS-5.5Dx digital infrared thermopile chip and its associated application solutions, offering comprehensive technical support. The technical team at Shenzhen SLKOR Micro Semicon Co., Ltd. comes from Tsinghua University and Yonsei University in South Korea, leading the company with new materials, processes, and products. They have mastered internationally advanced third-generation silicon carbide power device technology early on. SLKOR is a high-tech enterprise integrating electronic product design, development, production, and sales, providing reliable products and technical services to its customers. With rapid development, the company is introducing more new products to serve customers and make a positive contribution to the semiconductor industry, striving to become a "semiconductor leader."

Small relays are commonly used in electronic systems to control circuit switching, and they have widespread applications in industrial equipment, instruments, and household appliances. The heart of modern control circuits is usually computer chips such as MCUs, DSPs, and FPGAs. These core chips do not have enough output power to directly control small relays and can be driven by SLKOR's small transistors BC817-25, BC848B, BC847B, and small MOSFETs 2N7002E, SL2302S, SL2300, SL3400, SL3402, and Darlington arrays ULN2001D, ULN2003AU, ULN2803AS, etc. In the following example, we will use the driving of a small high-power relay JQC-3FF/12VDC-1ZS (551) from HF as an example. The coil of the relay has a rated voltage of 12V, an action voltage of 9V, a maximum voltage of 15.6V, and a coil resistance of 400Ω. When powered by 12V, the coil current is 30mA. Here we will introduce the design of driving the small relay using BC848B, SL2302, and ULN2803AS, respectively. Taking the STM32F030C8T6 MCU as an example, any IO pin can provide a maximum limit of 25mA of pull-up or pull-down current, and the total limit of pull-up or pull-down current for all IO pins is 80mA. Therefore, when applying the IO pins, there should be enough margin. The typical value of the weak pull-down resistor for the IO pin is 40KΩ. When powered by 3.3V, if the IO pin outputs 8mA of current, the minimum output high level is 2.9V, and if the IO pin pulls 8mA of current, the maximum output low level is 0.4V.

The Slkor 4056 is a low cost linear battery charger for single cell lithium-ion batteries. It has a CC/CV charge profile required for Li-Ion battery. Charge current and charge time are set externally with a single resistor and capacitor, respectively, the maximum charging current can reach 1A. The SL4056 has two open-drain output pins for status indication, namely the charging status indicator pin (CHRG) and the battery fully charged indicator pin (STDBY). The power MOSFET circuit inside the chip automatically reduces the charging current when the junction temperature of the chip exceeds 135℃. This feature allows users to maximize the utilization of the chip for charging without worrying about overheating and damaging the chip or external components. The Slkor? SL4056 is available in a ESOP8 package.

The Slkor® SL4054 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.