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TOP253PN

Name: TOP253PN
Rating: 4.7 (12 reviews)

IC OFFLINE SWITCH FLYBACK 8DIP

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製造商。部分 #TOP253PN
包 DIP-7
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規格

Package	Tube
Series	TOPSwitch®-HX
ProductStatus	Active
OutputIsolation	Isolated
InternalSwitch(s)	Yes
Voltage-Breakdown	700V
Topology	Flyback
DutyCycle	78%
Frequency-Switching	66kHz
Power(Watts)	25 W
FaultProtection	Current Limiting, Over Temperature, Over Voltage
OperatingTemperature	-40°C ~ 150°C (TJ)
Package/Case	8-DIP (0.300, 7.62mm), 7 Leads
SupplierDevicePackage	8-PDIP-C

概述

Description

The TOP253PN is a high-voltage integrated circuit designed primarily for switch-mode power supply (SMPS) applications. It belongs to the TOPSwitch family of devices, which are known for their efficiency and ease of use in power conversion circuits. This device combines a high-voltage power MOSFET and a controller in a single package, enabling compact designs and minimizing external component count.
Key features of the TOP253PN include a wide input voltage range, low standby power consumption, and built-in protections such as over-voltage, over-current, and thermal shutdown. It operates in both continuous and discontinuous conduction modes, making it versatile for various applications, including adapters, chargers, and isolated power supplies.
The device also supports primary-side regulation, reducing the need for feedback components, which simplifies design and enhances reliability. Overall, the TOP253PN is an ideal choice for designers seeking efficient, compact, and reliable power supply solutions.

Features

The TOP253PN is a highly integrated power switch designed for offline power supply applications. Key features include:
1. High Voltage: Operates with a wide input voltage range, typically from 85V to 265V AC.
2. Integrated Switching Controller: Combines a high-voltage power MOSFET with a control circuit, reducing the number of external components needed.
3. Flexible Output: Supports both flyback and buck converter topologies, making it suitable for various applications.
4. Low Standby Power: Ensures low standby power consumption to meet energy efficiency standards.
5. Overload Protection: Includes features like over-voltage protection, thermal shutdown, and current limiting to enhance reliability.
6. Built-in Soft Start: Minimizes inrush current during startup.
7. Compact Design: Available in a DIP-8 package, ideal for space-constrained applications.
These features make the TOP253PN suitable for powering consumer electronics, appliances, and other devices requiring efficient and reliable power conversion.

Package

The TOP253PN is packaged in a DIP-8 (Dual In-line Package with 8 pins). This type of package is commonly used for integrated circuits and allows for easy insertion into circuit boards.

Pinout

The TOP253PN is a power integrated circuit (IC) designed for switch-mode power supplies (SMPS). It features a total of 8 pins.
Here’s a brief overview of the pin functions:
1. Pin 1 (DRAIN): Connects to the drain of the internal power MOSFET.
2. Pin 2 (SOURCE): Connects to the source of the internal power MOSFET and is also the reference for the control circuitry.
3. Pin 3 (VCC): Supplies power to the IC and is connected to the input voltage.
4. Pin 4 (GND): Ground reference for the IC.
5. Pin 5 (COMP): Compensation pin for controlling feedback loop stability.
6. Pin 6 (SENSE): Current sense pin for overcurrent protection.
7. Pin 7 (CSN): Connects to the external capacitor for soft start and to set the output voltage regulation.
8. Pin 8 (VOFF): Voltage offset pin for additional control.
The TOP253PN is typically used in applications such as AC-DC converters, providing high efficiency and compact design solutions.

Manufacturer

The TOP253PN is manufactured by Power Integrations, Inc. Power Integrations is a technology company that specializes in high-performance analog and mixed-signal integrated circuits used in power conversion applications. Founded in 1988 and headquartered in San Jose, California, the company focuses on providing efficient solutions for power supply design in a variety of markets, including consumer electronics, industrial equipment, and renewable energy. Power Integrations is known for its innovative products that enhance energy efficiency and reduce the environmental impact of power supply systems. The TOP253PN, specifically, is a power IC designed for switch-mode power supplies, offering features like high efficiency and compact design.

Application

TOP253PN is a high-voltage power supply controller used primarily in switch mode power supplies (SMPS). Its application areas include LED drivers, battery chargers, adapters, and isolated power supplies for telecommunications and industrial equipment. It features features such as a built-in MOSFET, simplified design, and energy efficiency, making it suitable for consumer electronics, appliances, and desktop computers.

Equivalent

Equivalent products to the TOP253PN chip include the TOP243PN, TOP244PN, and TOP246PN. Other compatible alternatives may include the NCP1200 series and the LM2576 series, depending on specific application requirements. Always consult datasheets to ensure compatibility with your design specifications.