TOP257GN-TL Integrated Circuits (ICs)

Duty Cycle:	78%
Mounting Type:	Surface Mount
Supplier Device Package:	SMD-8C
Package / Case:	8-SMD (7 Leads), Gull Wing
Operating Temperature:	-40°C ~ 150°C (TJ)
Control Features:	--
Fault Protection:	Current Limiting, Over Temperature, Over Voltage
Power (Watts):	41W
Frequency - Switching:	66kHz
Series:	TOPSwitch®-HX
Voltage - Supply (Vcc/Vdd):	--
Topology:	Flyback
Voltage - Breakdown:	700V
Internal Switch(s):	Yes
Output Isolation:	Isolated
Part Status:	Active
Packaging:	Tape & Reel (TR)

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<p>Power management integrated circuits (PMICs) form the backbone of most electrical designs. From low-power applications to high-power systems, they are used to provide reliable and efficient power delivery. The TOP257GN-TL is a member of PMIC\'s wide family of AC-DC converters, and one of the more popular offline switching devices.</p><p>The TOP257GN-TL is designed for offline AC-to-DC conversion and ease of use. Its total power loss is a low 3.3W, making it ideal for applications where efficiency is a priority. It features a low startup current of just 1.2A and its standby current is only 28µA, allowing for a long life of operation. The device also provides a variety of protection features such as over-voltage protection, over-temperature protection, and under-voltage lockout. This ensures that the device is safe and reliable, even in demanding applications.</p><p>The TOP257GN-TL supports a wide range of AC mains inputs, ranging from 85-265V. It features an adjustable current control, which allows for a wide range of output currents, from 8 to 25A. This makes it ideal for applications that require a wide range of current levels, such as LED lighting applications. In addition, it features a wide voltage range of 0.6-0.85V, which makes it suitable for applications that require a wide range of output voltages, such as electronic displays.</p><p>The TOP257GN-TL has a robust EM shielding that helps reduce the need for additional external components. It also has a wide input tolerance, which allows the device to better handle power disturbances in real-world scenarios. The device is over-voltage protected and thermal protected, to ensure a safe and reliable operation. In addition, the device is compliant with RoHS, which is essential for environmentally-conscious products.</p><p>Though the TOP257GN-TL is an offline switching device, it still utilizes the same topologies as other AC-DC converters. In particular, it uses a two-stage buck-boost converter with voltage mode control. Voltage mode control is a method of monitoring the input voltage and adjusting the output voltage accordingly. This method can be used to maintain stability and operate the device within its specifications.</p><p>The two-stage buck-boost converter of the TOP257GN-TL consists of two Boost stages, followed by a Buck stage. During the Boost stage, the input voltage is higher than the output, and the output current is set by an adjustable current limit. During the Buck stage, the input voltage is lower than the output, and the output voltage is set by an adjustable voltage limit. In order to ensure optimum performance, the device includes an internal feedback loop that ensures that the output voltage and current are within the desired range.</p><p>The TOP257GN-TL is an efficient and reliable solution for AC to DC conversion, and is popular in all types of applications, from consumer electronics to medical systems. With its low power loss, wide voltage and current range, and robust safety features, it is ideal for any application that requires reliable AC-DC power conversion.</p>

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