Customer Requirement:

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A leading LCD monitor manufacturer from South Korea faced the challenge of developing an energy-efficient solution for the video interface of its displays. The solution had to meet the following criteria:

• Low power consumption with consistently high performance stability

• A dropout voltage of less than 300mV to maximize operating efficiency

• Flexible output voltage (from 1.0V to 3.3V) with a constant output current of 0.6A per channel

• Minimal heat generation and high reliability to extend product lifespan and reduce production costs

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Taejin Solution:

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To meet these requirements, Taejin developed the TJ5641, a dual-channel LDO (Low Dropout Regulator) featuring the following key characteristics:

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• Ultra-low dropout voltage of just 240mV at 3.3V and 0.6A per channel, ensuring exceptional energy efficiency

• Fixed output voltage from 1.0V to 3.3V per channel, giving customers design flexibility tailored to their specific needs

• Independent operation of both channels, enabling optimized power distribution and enhanced operational stability

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The TJ5641 is designed for compact PCB footprints while maintaining excellent thermal reliability. This results in lower heat dissipation and higher system dependability—critical for demanding applications.

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Results:

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The implementation of the TJ5641 delivered clear, measurable benefits for the customer:

• Energy Savings: Power consumption was reduced by 25% compared to previous solutions, thanks to the ultra-low dropout and optimized energy management.

• Customer Satisfaction: The solution integrated seamlessly into the customer’s existing design without requiring modifications. It significantly improved both monitor stability and production throughput.

• Economic Efficiency: The compact design and enhanced energy performance reduced production costs by 20%, while also increasing product longevity. This led to improved profitability and stronger market competitiveness.

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Summary:

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Taejin’s solution delivers not only technical excellence but also tangible economic benefits. The TJ5641 was specifically developed to meet the power and performance needs of modern LCD monitors—enhancing energy efficiency while reducing costs. With its dual-channel LDO architecture, the customer achieved both engineering and financial goals.

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Key Advantages:

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• Technical Excellence: The TJ5641 offers exceptionally low dropout voltage and high energy efficiency, ideal for optimizing power consumption.

• Flexibility & Scalability: Each channel operates independently, enabling seamless adaptation to various design requirements.

• Cost Efficiency: Lower production costs and energy savings increase profitability and market competitiveness.

• Sustainability: By significantly reducing power consumption, the solution contributes to CO₂ reduction and supports sustainable development.

Optimizing Power Supply Design in Notebook Computers with Customized Low Dropout Regulators (LDOs) from Taejin – for Enhanced Energy Efficiency and Fast Integration

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Customer Requirement:

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A leading South Korean electronics company was seeking a low-voltage-to-low-voltage power conversion solution for the media interface in its notebook computers. The key requirements included:

• Input voltage range from 1.2V to 1.5V

• Integrated soft-start function to control output voltage ramp-up

• Power-Good (PG) function to enable straightforward hardware-based power sequencing

• Minimal PCB footprint and low thermal impact

• A recommended application circuit ensuring stable performance

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Taejin Solution:

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To meet these requirements, Taejin customized an existing product and developed the TJ2132 LDO, offering:

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• Ultra-low dropout voltage of just 250mV at VOUT = VREF and IOUT = 2A

• Optimized for low input voltages with a wide output voltage range

• Built-in soft-start and Power-Good flag for smooth system integration and reliable operation

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Results:

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• Rapid Integration: The customized LDO was implemented quickly into the customer’s existing design

• High Reliability: The TJ2132 delivered both stable electrical performance and robust physical characteristics, fully meeting customer expectations

• Improved Energy Efficiency: Reduced power consumption led to a measurable increase in overall system efficiency

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Customer Value:

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By adopting the TJ2132, the customer was able to significantly improve the power supply architecture of their notebook platforms. The solution enabled faster time-to-market, reduced operational costs, and enhanced energy efficiency without the need for extensive redesign.

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Technical Specifications:

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• Input Voltage Range: 1.1V to 3.6V

• Output Voltage Range: 0.6V to 1.8V

• Typical Dropout Voltage: 250mV at VOUT = VREF and IOUT = 2A

• Integrated Soft-Start and Power-Good functions for easy system integration

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Supporting Tools:

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An application circuit and evaluation board for the TJ2132 were provided to facilitate fast verification and development.

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Key Advantages:

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• Fast, cost-efficient integration into notebook power supply architectures

• Meets critical performance criteria: low dropout, Power-Good signal, and soft-start

• Optimized for next-generation devices requiring compact, energy-efficient and scalable solutions

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Optimizing Power Delivery for In-Vehicle Infotainment Systems with Customized Low Dropout Regulators (LDOs) and OCP ICs – Enabling Safe and Reliable USB Power Supply

 

Customer Requirement:

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A leading Japanese manufacturer in the field of car entertainment sought a robust power management solution for infotainment and audio systems in vehicles. Their requirements included:

• Input voltage conversion: 9.3V to 5V and 6.3V to 5V, with a maximum output current of 100mA

• LDO and OCP IC for USB power delivery (5V USB output)

• Testing and validation of the proposed ICs and circuit designs

• Reliability testing and provision of a Business Continuity Plan (BCP)

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Taejin Solution:

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Taejin provided:

• A low dropout voltage LDO, specifically optimized for low input voltage and in-vehicle USB applications

• An OCP IC with an adjustable current limit up to 2.25A and a typical ON-resistance of 100mΩ, ensuring stable performance under varying load conditions

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Results:

• Reliability and Cost Efficiency: The LDO efficiently met the customer’s power requirements, while reliability reports confirmed consistent and robust performance

• Fast Implementation: The solution was quickly verified and smoothly integrated into the customer’s infotainment system

• Economic Benefit: The OCP IC ensured stable and safe USB port operation without thermal issues or disruptions, contributing to overall system efficiency

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Technical Specifications:

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• LDO Regulator: Typical dropout voltage of 140mV at IOUT = 100mA

• OCP IC: Adjustable current limit up to 2.25A, ON-resistance typ. 100mΩ

• Application: USB 5V power supply for in-vehicle infotainment systems and audio electronics

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Key Advantages:

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• Rapid integration and cost-effective power optimization for automotive infotainment systems

• High system stability and safety through reliable USB power control

• Optimized IC performance tailored to the specific demands of in-vehicle applications

Optimizing Power Supply in Smart Metering Applications with Custom Power Tree Solutions – Combining High Current and Ultra-Low Quiescent LDOs for Maximum Efficiency and Reliability.

 

Customer Requirement:

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A leading energy meter manufacturer in China required a power management solution for a smart metering application with the following specifications:

• Multiple regulated output voltages: 3.72V, 3.28V, and 4.97V, with an input range of 4.8V to 6.5V

• Sufficient current margin to support future system upgrades

• Flexible circuit configurations via jumper-based design

• Application circuits, test reports, and live demonstrations to validate performance and reliability

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Taejin Solution:

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Taejin proposed a custom power tree architecture that combined:

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• High Current LDOs with low dropout voltage and minimal thermal resistance for maximum performance

• Low Quiescent Current LDOs for reduced power consumption and minimal heat generation

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This hybrid approach was specifically tailored to meet energy demands while ensuring thermal efficiency and long-term system stability.

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Results:

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• Requirements Fully Met: The power tree delivered stable voltage outputs under varying operating conditions, with optimized energy efficiency

• Proven Reliability: Validation reports confirmed consistent electrical performance and long-term operational reliability

• Economic Benefit: Low power consumption and efficient thermal behavior translated into cost savings and improved system resilience

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Technical Specifications:

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• High Current LDO:

  • Typical dropout voltage: 320mV @ IOUT = 1.5A

  • Large-package design to reduce thermal resistance

• Low Quiescent Current LDO:

  • Typical dropout voltage: 190mV @ IOUT = 0.3A

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Supporting Tools:

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Application circuit diagrams and product visuals of the Power Tree architecture were provided to ensure seamless integration and verification.

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Conclusion:

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Taejin’s power solution enabled the customer to implement a highly reliable and energy-efficient power supply tailored for next-generation smart metering. The combination of High Current and Low Quiescent LDOs delivered a cost-effective and scalable approach, optimized for long-term operational stability in energy measurement systems.

 

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