| Allicdata Part #: | SG2842M-ND |
| Manufacturer Part#: |
SG2842M |
| Price: | $ 3.40 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Microsemi Corporation |
| Short Description: | IC REG CTRLR FLYBK ISO PWM 8-DIP |
| More Detail: | Converter Offline Flyback Topology 100Hz ~ 500kHz ... |
| DataSheet: |  SG2842M Datasheet/PDF |
| Quantity: | 936 |
| 1 +: | $ 3.08700 |
| 10 +: | $ 2.75499 |
| 25 +: | $ 2.47918 |
| 100 +: | $ 2.25886 |
| 250 +: | $ 2.03846 |
| 500 +: | $ 1.82911 |
Specifications
| Duty Cycle: | 95% |
| Base Part Number: | SG*842 |
| Mounting Type: | Through Hole |
| Supplier Device Package: | 8-PDIP |
| Package / Case: | 8-DIP (0.300", 7.62mm) |
| Operating Temperature: | -25°C ~ 85°C (TA) |
| Control Features: | Frequency Control |
| Fault Protection: | Current Limiting |
| Frequency - Switching: | 100Hz ~ 500kHz |
| Series: | -- |
| Voltage - Supply (Vcc/Vdd): | 10 V ~ 30 V |
| Voltage - Start Up: | 16V |
| Topology: | Flyback |
| Voltage - Breakdown: | -- |
| Internal Switch(s): | No |
| Output Isolation: | Isolated |
| Part Status: | Active |
| Packaging: | Tube |
Description
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The SG2842M can be classified as one of the most popular power management integrated circuits (PMIC) - AC DC converters, offline switchers. It is well known for its high reliability and performance level based on its technological designs and construction. In this article, we will discuss the SG2842M application field and working principle.
The SG2842M is designed as an off-line switching power supply and converter with a wide application field. It is used for supplying a constant operating voltage for low power electronic and electronic equipment. It is mainly used for UPS, PC peripheral and power adapter applications.
The SG2842M working principle is based on the buck topology. It is a kind of power conversion method which switches the voltage step-down method. It uses pulses to control the output voltage. The SG2842M utilizes the idea of pulse-width modulation (PWM) to regulate the output voltage by converting the pulse width, which is also called duty cycle. The on-time, or duty cycle of the pulse train can be adjusted to obtain the desired output voltage. The output voltage is set by the external feedback resistors and Zener diode, and can be adjusted by the potentiometer connected with them.
The SG2842M offers high speed performance. It is able to handle high speed switching frequency up to 300KHz with easy synchronization. This makes it one of the preferred ICs for use in power adapter applications, which require a large current without introducing extra losses due to conduction resistance. In addition, it has a wide range of operating temperature, thanks to its superior heat sinking technology.
The SG2842M also offers high efficiency and power factor correction. The use of switching transistors allow the IC to offer high efficiency, up to 95%. It also allows the use of secondary power factor correction to reduce input harmonic current. This reduces the power factor, which is the input capacitor energy saved compared to the total energy delivered to the output.
The SG2842M is also highly reliable and energy efficient. It has a superior thermal protection which can protect the device from high temperature condition and enable the device to reach up to 2.25W of power saving in the same application. The overall power efficiency of the device is also enhanced due to its soft-start feature. This helps to reduce the inrush current at start-up and enhance the life of the device.
In conclusion, the SG2842M is an excellent choice for power adapters and AC DC converters and offline switchers. It provides high reliable, efficient and power factor correction performance, as well as a wide temperature range for application in extreme temperature conditions. In addition, its soft-start feature helps protect the device from damage due to inrush current at start-up.
The specific data is subject to PDF, and the above content is for reference
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