SG1525AJ

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SG1525AJ

IC REG CTRLR PUSH-PULL 16DIP

  • Fabricant
  • Mfr. Partie #SG1525AJ
  • Paquet CDIP-16
  • Fiche de données
  • En stock7361

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Spécifications

ProductStatus Discontinued at Digi-Key
OutputType Transistor Driver
Function Step-Up/Step-Down
OutputConfiguration Positive
Topology Push-Pull
NumberofOutputs 2
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 8V ~ 35V
Frequency-Switching 100Hz ~ 350kHz
DutyCycle(Max) 49%
SynchronousRectifier Yes
ClockSync Yes
ControlFeatures Enable, Frequency Control, Soft Start
OperatingTemperature -55°C ~ 125°C (TA)
MountingType Through Hole
Package/Case 16-CDIP (0.300, 7.62mm)

Vue d'ensemble

Description

The SG1525AJ is a high-performance pulse-width modulator (PWM) integrated circuit used primarily in switch-mode power supplies and other power control applications. It is designed to provide efficient control of power devices, such as transistors or MOSFETs, by generating precise timing signals. Key features include a wide operating voltage range, high output drive capability, and built-in protection mechanisms, such as undervoltage lockout and soft-start functionality. The device typically includes an oscillator, error amplifier, PWM comparator, and output drivers, all integrated into a single chip. It supports both voltage and current mode control and is known for its reliability and versatility in various power management applications. The SG1525AJ is favored in environments requiring stable and efficient power conversion, offering a balance of performance, integration, and ease of use for designers.

Features

The SG1525AJ is a versatile PWM (Pulse Width Modulation) controller integrated circuit commonly used in power supply regulation and other power management applications. Key features of the SG1525AJ include:
1. Precision Voltage Reference: It ensures stable operation by providing a reliable reference voltage for the PWM control circuitry.
2. Oscillator: It has an on-chip oscillator that can be programmed via external resistors and capacitors to adjust the frequency according to specific application needs.
3. Dual Output: The device includes two alternating outputs for driving push-pull or half-bridge configurations, enhancing its versatility in different circuit designs.
4. Error Amplifier: It incorporates an error amplifier with a low input offset voltage, which aids in maintaining output voltage regulation and stability.
5. Adjustable Dead-Time Control: The SG1525AJ allows for the adjustment of dead-time between output pulses to minimize cross-conduction in power switches.
6. Current Limiting: It includes provisions for current limiting, which helps protect the power supply components from overload conditions.
7. Soft Start Capability: The soft start function is integrated to prevent output voltage overshoot during startup conditions.
These features make the SG1525AJ a reliable choice for designing efficient and stable power supplies across various applications.

Package

The SG1525AJ is typically available in a dual in-line package (DIP) or a surface-mount package, such as the J-lead chip carrier. The specific package type can vary depending on the manufacturer, so it is advisable to refer to the datasheet of the specific product version for precise packaging details.

Pinout

The SG1525AJ is a pulse width modulation (PWM) controller typically used for power supply and motor control applications. It is a 16-pin device with the following pin functions:
1. Compensation: For error amplifier compensation.
2. Voltage Feedback (VFB): Error amplifier inverting input.
3. Current Sense: Senses current for current-mode control.
4. RT/CT: Sets oscillator frequency.
5. Discharge: Oscillator discharge pin.
6. Soft Start: Controls the soft-start timing.
7. Ground: Ground reference.
8. Shutdown: Shuts down the PWM output.
9. VCC: Positive supply voltage.
10. Output A: One of the outputs for driving external transistors.
11. Output B: The second output for driving external transistors.
12. VC: Collector supply for outputs.
13. Emitter: Emitter supply for outputs.
14. Reference Output: Provides a reference voltage.
15. Non-inverting Input (Error Amp): Error amplifier non-inverting input.
16. Sync: Synchronization pin for multiple units.
This configuration enables the SG1525AJ to effectively manage the timing and control aspects necessary in switching power supplies and other related applications.

Manufacturer

The SG1525AJ is manufactured by Microsemi, a company known for providing semiconductor and system solutions. Microsemi specializes in high-performance analog and mixed-signal integrated circuits, offering products for various markets including aerospace, defense, communications, data center, and industrial sectors.

Application

The SG1525AJ is a pulse width modulation (PWM) controller typically used in power electronics applications. Its primary application areas include switch-mode power supplies (SMPS), DC-DC converters, and inverters. It is suited for regulating power in computer systems, telecommunications equipment, and industrial controls. The device's features such as pulse-by-pulse current limiting, soft-start, and shutdown capabilities make it ideal for applications requiring efficient power management and precise control.

Equivalent

The SG1525AJ is a pulse-width modulation (PWM) controller. Equivalent products include the TL494, KA3525A, and UC3525A. These chips offer similar functionality for PWM control in power supply circuits. Always verify compatibility with your specific application requirements before substituting components.

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