KA7500 / KA7500B SOP-16 PWM Switching Power Supply Controller IC — 10-Pack

KA7500 / KA7500B SOP-16 PWM Switching Power Supply Controller IC — 10-Pack

The KA7500 / KA7500B is a SOP-16 PWM controller IC from Fairchild (now onsemi), functionally equivalent to the industry-standard TL494. It integrates a fixed-frequency PWM oscillator, two error amplifiers, a dead-time comparator, and dual output transistors — providing all the control functions needed for single-ended or push-pull switching power supply design. Widely used in PC ATX power supplies, DC-DC converters, and motor drives. This 10-pack is ideal for repair stock and production.

Key Specifications

Parameter	Value
IC	KA7500 / KA7500B
Package	SOP-16
TL494 Compatible	Yes (pin-for-pin)
Supply Voltage	7V – 40V
Oscillator Frequency	1kHz – 300kHz (set by RT/CT)
Output Transistors	2 (NPN, 200mA each)
Output Mode	Single-ended or push-pull
Error Amplifiers	2 (differential)
Dead-Time Control	Yes (programmable)
Pack Quantity	10 pieces

Why Choose KA7500?

• ✅ TL494 pin-compatible — direct replacement in existing TL494 designs
• ✅ SOP-16 SMD package — compact footprint for modern PCB designs
• ✅ Dual error amplifiers — voltage and current mode control in one IC
• ✅ 1–300kHz frequency range — covers most SMPS applications
• ✅ 10-pack value — stock for multiple repair jobs and production

Typical Applications

• PC ATX power supply PWM controller repair
• DC-DC converter push-pull stage controller
• Motor drive PWM controller
• Battery charger switching controller
• Industrial SMPS design

Package Contents

• 10 × KA7500 / KA7500B SOP-16 PWM Controller IC

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