LNK585DG-TL

Mounting Type:	Surface Mount
Series:	LinkZero™-AX
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Isolation:	Either
Internal Switch(s):	Yes
Voltage - Breakdown:	700V
Topology:	Flyback
Voltage - Supply (Vcc/Vdd):	--
Duty Cycle:	63%
Frequency - Switching:	100kHz
Power (Watts):	4.5W
Fault Protection:	Current Limiting, Open Loop, Over Temperature, Over Voltage, Short Circuit
Control Features:	--
Operating Temperature:	-40°C ~ 150°C (TJ)
Package / Case:	8-SOIC (0.154", 3.90mm Width), 7 Leads
Supplier Device Package:	SO-8C

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Power Management Integrated Circuit (PMIC) solutions play a critical role in the development of today’s electronic devices. The high levels of integration offered by PMICs reduce the number of components in a system, thus increasing system efficiency and reducing the power consumption and size of the system. A wide range of PMIC solutions, such as AC/DC converters, offline switchers, etc., provide the ability to power, supercapacitor charging, sequencing and sequencing, sequencing, sequencing, sequencing, conditioning, etc. All of these applications are essential for creating successful devices. The LNK585DG-TL is a position, rating, and current controller for switch mode power supplies employing primary, secondary, and tertiary switched-mode topologies. It integrates two levels of control, position and current, into a single chip, allowing for high power conversion efficiency and accurate control of output voltage, current and power. The LNK585DG-TL is an IC from Power Integrations, an American semiconductor company specializing in high-voltage integrated circuits for AC/DC power conversion.

Application Field of LNK585DG-TL

The LNK585DG-TL can be used in a variety of applications including power adapters, LED drivers, chargers and motor drivers. The chip is rated for up to 90W of output power and up to 72V of input voltage. It supports primary, secondary and tertiary switched-mode topologies, including Flyback, Boost, Buck, Buck-Boost, Cuk, and SEPIC topologies. The device integrates dynamic position and current control and is designed to minimize power loss and minimize external components, making it an ideal solution for high power, low profile and low cost applications.

Working Principle of LNK585DG-TL

The output of the LNK585DG-TL can be regulated using either a voltage or a current control loop. In the voltage control loop, the output voltage is monitored and compared with a reference voltage. The error is used to adjust the duty cycle of the switch, resulting in output voltage regulation. In the current control loop, the output current is monitored and compared with a reference current. The error is used to adjust the on-time of the switch, resulting in output current regulation.In addition to its position and current control features, the LNK585DG-TL also integrates several system protection features including Over Temperature Protection (OTP), Over Voltage Protection (OVP), Over Current Protection (OCP), and short-circuit protection. These features ensure that the system is protected from damage when external forces are applied.Finally, the LNK585DG-TL also has a wide range of programmable features including voltage and current regulation, standby function, soft start, system sense and output slope compensation, thus allowing the user to configure the system to their exact needs.

Conclusion

The LNK585DG-TL is an integrated circuit from Power Integrations specialized for switch mode power supplies, offering two levels of control, position and current, along with several system protection features. It can be used in a variety of applications including power adapters, LED drivers, chargers and motor drivers and is rated for up to 90W of output power and up to 72V of input voltage. The device integrates dynamic position and current control and is designed to minimize power loss, making it an ideal solution for power-critical applications.

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