SG3525AP

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SG3525AP

IC REG CTRLR BCK/PSH-PULL 16SOIC

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規格

Package Tube
ProductStatus Active
OutputType Transistor Driver
Function Step-Down, Step-Up/Step-Down
OutputConfiguration Positive
Topology Buck, Push-Pull
NumberofOutputs 2
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 8V ~ 35V
Frequency-Switching 100Hz ~ 400kHz
DutyCycle(Max) 49%
SynchronousRectifier Yes
ClockSync Yes
ControlFeatures Enable, Soft Start
OperatingTemperature 0°C ~ 70°C (TA)
MountingType Surface Mount
Package/Case 16-SOIC (0.154, 3.90mm Width)

概述

Description

The SG3525AP is a pulse width modulation (PWM) controller IC commonly used for DC-DC converters and power inverter applications. It is part of the SG3525 series, which is known for providing precise control with high efficiency. The IC is designed to offer ease of use and robust performance, featuring a wide input voltage range, adjustable operating frequency, and built-in protections against over-voltage and over-temperature.
Key features of the SG3525AP include an on-chip oscillator with adjustable frequency, dual output stages capable of driving external transistors, and error amplifier for feedback control. It supports a maximum output current of about ±500mA per output, suitable for driving MOSFETs or bipolar transistors. The IC also includes soft-start capability to prevent high inrush current during startup.
Applications of the SG3525AP include switch-mode power supplies, uninterruptible power supplies (UPS), and various motor control systems. Its versatility and reliability make it a popular choice for engineers designing efficient power management systems.

Features

The SG3525AP is a pulse width modulation (PWM) controller integrated circuit (IC) widely used in power electronics for efficient control of power converters like DC-DC converters, inverters, and switching power supplies. Key features include:
1. Voltage Range: Operates over a wide supply voltage range, typically from 8V to 35V.
2. Oscillator: Built-in oscillator with adjustable frequency through external resistors and capacitors, allowing for flexibility in design.
3. Output: Provides dual totem-pole outputs for direct drive of MOSFETs or power transistors, supporting push-pull or half-bridge configurations.
4. Dead-Time Control: Includes an adjustable dead-time control that prevents simultaneous conduction of power transistors, enhancing efficiency and safety.
5. Soft-Start Capability: Soft-start functionality to gradually increase the output power, protecting the power devices from sudden surges.
6. Error Amplifier: Features an internal error amplifier with a precise reference voltage for feedback control, ensuring accurate regulation.
7. Protection: Overcurrent and overtemperature protection enhance reliability and safety in power applications.
These features enable the SG3525AP to provide reliable, efficient, and flexible control for various power electronic applications.

Package

The SG3525AP is typically available in a Dual In-line Package (DIP) or a Plastic Dual Inline Package (PDIP), which are common package types for integrated circuits, making it suitable for through-hole mounting on printed circuit boards.

Pinout

The SG3525AP is a pulse width modulation (PWM) controller IC commonly used in switch-mode power supplies and other power conversion applications. It features a 16-pin dual in-line package (DIP) or surface-mount package. Here is a brief overview of its pin functions:
1. Pin 1 (Compensation): Connects to the compensation network.
2. Pin 2 (VREF): Outputs a 5V reference voltage.
3. Pin 3 (OSC): Sets the oscillator frequency with external resistor and capacitor.
4. Pin 4 (SYNC): Synchronizes the oscillator with external clock.
5. Pin 5 (CSoft Start): Connects to the soft-start capacitor.
6. Pin 6 (Shutdown): Disables the output stage when activated.
7. Pin 7 (CT): Timing capacitor for oscillator frequency.
8. Pin 8 (RT): Timing resistor for oscillator frequency.
9. Pin 9 (EA-): Inverting input of the error amplifier.
10. Pin 10 (EA+): Non-inverting input of the error amplifier.
11. Pin 11 (Output A): Outputs PWM signal for one half of the bridge.
12. Pin 12 (GND): Ground reference.
13. Pin 13 (VCC): Positive supply voltage.
14. Pin 14 (Output B): Outputs PWM signal for other half of the bridge.
15. Pin 15 (VC): Collector supply voltage for output transistors.
16. Pin 16 (Feedback): Provides feedback to the error amplifier.
These pins together facilitate the generation and control of PWM signals for efficient power management.

Manufacturer

The SG3525AP is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a wide range of electronic components and solutions. The company is known for its expertise in various areas including microcontrollers, power management, sensors, and analog devices. With operations worldwide, STMicroelectronics serves numerous markets such as automotive, industrial, personal electronics, and communications equipment, making it a key player in the semiconductor industry.

Application

The SG3525AP is a pulse width modulation (PWM) controller used primarily in switch-mode power supplies (SMPS) and DC-DC converters. Its application areas include power inverters, battery chargers, uninterruptible power supplies (UPS), and motor control systems. It is well-suited for regulating output voltage in power electronics due to features like adjustable dead-time control, soft-start capability, and precise duty cycle control.

Equivalent

Equivalent products to the SG3525AP chip include the TL494, KA3525A, UC3525A, SG3525AN, and LM3525A. These are PWM controllers used in power supply and inverter applications. While they offer similar functionalities, always check the datasheets for specific parameter matching when substituting.

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