Allicdata Part #: | LYT4327E3-ND |
Manufacturer Part#: |
LYT4327E3 |
Price: | $ 1.34 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Power Integrations |
Short Description: | IC LED DRIVER OFFL DIM ESIP-7C |
More Detail: | Converter Offline Flyback, Step-Down (Buck), Step-... |
DataSheet: | LYT4327E3 Datasheet/PDF |
Quantity: | 1000 |
288 +: | $ 1.22424 |
Duty Cycle: | 99.9% |
Mounting Type: | Through Hole |
Supplier Device Package: | eSIP-7C |
Package / Case: | 7-SSIP, 6 Leads, Exposed Pad, Formed Leads |
Operating Temperature: | -40°C ~ 150°C (TJ) |
Control Features: | -- |
Fault Protection: | -- |
Power (Watts): | 50W |
Frequency - Switching: | 140kHz |
Series: | LYTSwitch™-4 |
Voltage - Supply (Vcc/Vdd): | -- |
Topology: | Flyback, Step-Down (Buck), Step-Up (Boost) |
Voltage - Breakdown: | 725V |
Internal Switch(s): | Yes |
Output Isolation: | Isolated |
Part Status: | Active |
Packaging: | Tube |
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LYT4327E3 Application Field and Working Principle
LYT4327E3 is a device of PMIC - AC DC converters and offline switchers. It is a PFM (pulse-frequency modulation) controller regulating the power stage of a power supply adaptor or offline switcher product for the PC or other information technology (IT) equipment application. It is suitable for segregated power supply and a supply voltage of up to 500V.
Features and benefits
- Integrated PFM controller
- Accurate primary side AC measurement
- High integration, reduce the size and cost.
- Protection features and Power On system reset
- Low power consumption
Application Field
LYT4327E3 is versatile, with a wide range of input voltages and supply ranges, which can be used in AC-DC adapter, offline switchers and other application fields, such as personal and home appliances, medical care equipment, notebook computers, etc. It can provide system stable power with low cost and high efficiency.
Working Principle
LYT4327E3 is a low-power PFM controller. It adopts a BiCMOS process and integrates a PFM control IC and an auxiliary circuit, mainly composed of a reset circuit, a voltage detection circuit, a two-stage peak current limiting circuit, and a drive circuit. The PFM control circuit is designed to regulate the low-power systems, it can detect the primary AC and accurately measure the zero-crossing condition to regulate the output voltage.
When the primary AC and start-up power is detected, the output is set to standby or low power mode, and the chip monitors the measured voltage value. If the voltage is too low or too high, the chip feedbacks the control signal to the control terminal, then the feedback signal is amplified by the driver circuit which will adjust the output power accordingly, thus to maintain a stable output power.
Conclusion
LYT4327E3 is a low-power PFM controller, which can be used for AC-DC adapter and offline switcher applications, and provides stable power with low cost and high efficiency. It has a variety of features and benefits, such as integrated PFM controller, accurate primary side AC measurement, high integration, protective features and power on reset, and low power consumption.
The specific data is subject to PDF, and the above content is for reference
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