TEA1533AT/N1,512

Duty Cycle:	--
Base Part Number:	TEA1533
Mounting Type:	Surface Mount
Supplier Device Package:	14-SO
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-20°C ~ 145°C (TJ)
Control Features:	--
Fault Protection:	Current Limiting, Over Power, Over Temperature, Over Voltage
Power (Watts):	250W
Frequency - Switching:	25kHz ~ 175kHz
Series:	GreenChip™ II
Voltage - Supply (Vcc/Vdd):	8.7 V ~ 20 V
Voltage - Start Up:	11V
Topology:	Flyback
Voltage - Breakdown:	650V
Internal Switch(s):	No
Output Isolation:	Isolated
Part Status:	Obsolete
Packaging:	Tube

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TEA1533AT/N1 is a PMIC (Power Management IC) specialised in AC/DC converters and offline switchers. It comes in a 24-lead SSOP package and provides a comprehensive solution that encompasses safety, control, energy savings and ease of application. This PMIC is suitable for a variety of applications, such as universal offline converter designs, UHP TV/monitors, auxiliary power systems, and white goods.The TEA1533AT/N1 combines efficiency optimisation and protections, such as overload & overvoltage, hiccup mode during transient overload, and built-in device safety in one integrated circuit. This PMIC provides the control and protections needed for reliable and efficient operation in AC/DC converter and offline switcher designs. It is designed for primary side power control for non-isolated flyback converters and offline switchers, and can be used in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM).This integrated circuit consists of two sections: the PWM control logic and the power MOSFET driver. The Control Logic Section handles the voltage and current sense inputs, the control circuitry, compared with oscillator and the latch circuit. The power MOSFET driver section consists of the Gate Driver, OVP driver, UVLO driver, and driver amplifier circuitry. The PWM comparator gets feedback from the current sense input and compares it with the reference voltage to generate an output signal. The driver section is responsible for driving the power MOSFETs, depending on the logic inputs.The TEA1533AT/N1 has various features that make it suitable for offline switchers and AC/DC converters. These features include frequency jittering, low standby power, reduced EMI generation, overvoltage and overtemperature protection, and soft start.The frequency jittering feature helps reduce EMI, improve efficiency and reduce stress on the switching elements. This is done by changing the switching frequency, which reduces the EMI levels from the converter, resulting in a better EMI performance.The low standby power feature ensures minimal power consumption in any powered device, helping to reduce the power bills. This feature is achieved by reducing the switching frequency when the output voltage is below a certain threshold to reduce power consumption.The overvoltage protection (OVP) and overtemperature protection (OTP) features provide protection against high voltage and high temperature in the converter circuit. This prevents the convergence of the power switching elements and the circuit components from being destroyed by the excessive current.The soft start feature helps the converter to start up more smoothly, reducing the inrush current. This helps reduce stress on the converter circuit and improves the overall performance of the converter.Overall, the TEA1533AT/N1 is an ideal integrated circuit for AC/DC converters and offline switchers. It provides comprehensive control and protection for reliable, efficient operation of these converters. Combined with features like frequency jittering, low standby power, overvoltage and overtemperature protection, and soft start, the TEA1533AT/N1 offers excellent performance and value.

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