ON Semiconductor
Imej mungkin representasi.
Lihat spesifikasi untuk butiran produk.
KA7500C
Lihat Butiran Helaian data

KA7500C

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Mode PWM Controller

Characteristics: - Regulates the output voltage of power supplies - Controls the duty cycle of a pulse width modulation (PWM) signal - Provides protection features for overvoltage, undervoltage, and overcurrent conditions

Package: Dual Inline Package (DIP)

Essence: The KA7500C is a versatile PWM controller that is widely used in power supply applications. It offers precise control over the output voltage and ensures efficient power conversion.

Packaging/Quantity: The KA7500C is typically sold in reels or tubes containing multiple units.

Specifications

  • Input Voltage Range: 7V to 40V
  • Output Voltage Range: 5V to 35V
  • Maximum Duty Cycle: 100%
  • Oscillator Frequency Range: 1kHz to 300kHz
  • Operating Temperature Range: -25°C to +85°C

Pin Configuration

The KA7500C has a total of 16 pins. Here is the detailed pin configuration:

  1. VCC: Power supply input
  2. GND: Ground reference
  3. COMP: Error amplifier output
  4. FB: Feedback input for regulating the output voltage
  5. RT/CT: Timing resistor/capacitor connection
  6. CT: Timing capacitor connection
  7. OSC: Oscillator timing capacitor connection
  8. DIS: Output disable control
  9. TH: Threshold voltage input
  10. REF: Reference voltage output
  11. OUT: PWM output
  12. CS: Current sense input
  13. INV: Inverting input of the error amplifier
  14. NC: No connection
  15. NC: No connection
  16. NC: No connection

Functional Features

  • Precise voltage regulation through feedback control
  • Adjustable oscillator frequency for flexible power supply designs
  • Overvoltage protection to prevent damage to connected devices
  • Undervoltage lockout to ensure proper operation under low voltage conditions
  • Overcurrent protection to safeguard against excessive current draw

Advantages and Disadvantages

Advantages: - Versatile and widely used in power supply applications - Offers precise control over output voltage - Provides various protection features - Flexible oscillator frequency range

Disadvantages: - Limited output voltage range (5V to 35V) - Requires external components for complete power supply implementation

Working Principles

The KA7500C operates based on the voltage mode control technique. It compares the feedback voltage with a reference voltage and adjusts the duty cycle of the PWM signal accordingly. By controlling the duty cycle, the output voltage is regulated.

Detailed Application Field Plans

The KA7500C is commonly used in various power supply applications, including: - Switching power supplies - Battery chargers - LED drivers - DC-DC converters

Alternative Models

Here are some alternative models that can be considered as replacements for the KA7500C: - TL494 - UC3842 - SG3525 - LM5039

These models offer similar functionality and can be used in similar power supply applications.

Word count: 309 words

Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi KA7500C dalam penyelesaian teknikal

  1. Question: What is the purpose of KA7500C in technical solutions?
    Answer: KA7500C is a pulse width modulation (PWM) controller IC commonly used in power supply applications to regulate the output voltage.

  2. Question: How does KA7500C control the output voltage in a power supply?
    Answer: KA7500C uses PWM to control the duty cycle of the output waveform, thereby regulating the output voltage.

  3. Question: What are the typical input voltage and current requirements for KA7500C?
    Answer: KA7500C typically operates with input voltages ranging from 8V to 35V and can handle currents up to 100mA.

  4. Question: Can KA7500C be used in both AC and DC power supply designs?
    Answer: Yes, KA7500C can be utilized in both AC and DC power supply designs due to its versatile PWM control capabilities.

  5. Question: Are there any specific application notes or reference designs available for using KA7500C in power supply circuits?
    Answer: Yes, the datasheet for KA7500C provides detailed application notes and reference designs for various power supply configurations.

  6. Question: What protections does KA7500C offer for power supply circuits?
    Answer: KA7500C includes features such as overcurrent protection and overvoltage protection to safeguard power supply circuits.

  7. Question: Can KA7500C be used in switch-mode power supply (SMPS) designs?
    Answer: Yes, KA7500C is commonly employed in SMPS designs due to its PWM control and regulation capabilities.

  8. Question: What are the key advantages of using KA7500C in power supply applications?
    Answer: The key advantages of KA7500C include high efficiency, precise voltage regulation, and flexibility in design implementation.

  9. Question: Are there any common issues or challenges when using KA7500C in power supply designs?
    Answer: Some common challenges include noise interference and component selection for optimal performance.

  10. Question: Can KA7500C be used in automotive or industrial power supply systems?
    Answer: Yes, KA7500C is suitable for use in automotive and industrial power supply systems, offering reliable performance in demanding environments.