Keszoox
TL494CN DIP-16 PWM Power Controller IC — TL494 Series (5pcs)
TL494CN DIP-16 PWM Power Controller IC TL494 Series (5pcs)
Couldn't load pickup availability
TL494CN — DIP-16 PWM Power Controller IC (TL494 Series)
The TL494CN is the industry-standard fixed-frequency PWM controller IC in DIP-16 through-hole package, part of the classic TL494 series. With dual error amplifiers, programmable dead-time, and complementary push-pull outputs capable of 200mA, it remains the backbone of ATX power supplies, DC-DC converters, and inverter designs worldwide. This listing provides 5 pieces — new and original.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | TL494CN |
| Series | TL494 |
| Package | DIP-16 |
| Supply Voltage (Vcc) | 7V – 40V |
| Output Current (per driver) | 200mA sink/source |
| Oscillator Frequency | 1Hz – 300kHz |
| Error Amplifiers | 2 (differential, 70dB gain) |
| Dead-Time Control | 0–45% programmable |
| Output Modes | Single-ended or push-pull |
| Internal Reference | 5V ±1% |
| Operating Temperature | 0°C to +70°C |
| Quantity | 5 PCS |
TL494 Series Comparison
| Part | Temp Range | Package | Notes |
|---|---|---|---|
| TL494CN | 0°C to +70°C | DIP-16 | Commercial, through-hole |
| TL494CD | 0°C to +70°C | SOIC-16 | Commercial, SMD |
| TL494IN | -40°C to +85°C | DIP-16 | Industrial grade |
| TL494C | 0°C to +70°C | DIP-16 | Equivalent to TL494CN |
Why Choose TL494CN?
- ✅ Dual error amplifiers — independent voltage and current feedback loops
- ✅ Push-pull outputs — drives transformer primary directly in push-pull/half-bridge
- ✅ Programmable dead-time — prevents shoot-through in complementary switch pairs
- ✅ 5V internal reference — no external reference IC required
- ✅ 300kHz max frequency — suitable for compact high-frequency SMPS designs
Compatible With / Works With
- ATX desktop PC power supply primary PWM stage
- Push-pull 12V–220V inverter transformer driver
- DC-DC boost converter (12V to 48V) control stage
- Motor PWM speed controller
- Gate drivers: IR2110, TC4420 (for large MOSFET gate capacitance)
Typical Applications
- ATX Power Supply — primary PWM controller in desktop PC SMPS
- 12V–220V Inverter — push-pull driver for EI33/EE42 transformer
- DC-DC Converter — boost/buck-boost topology up to 300kHz
- UPS Inverter — sine-wave or square-wave output stage control
- Motor Speed Controller — variable frequency PWM for DC motors
FAQ
Q: Is TL494CN the same as TL494C?
A: Yes. TL494CN and TL494C are electrically identical — same DIP-16 package, same specifications. The "N" suffix denotes the DIP (plastic dual in-line) package in Texas Instruments' naming convention.
Q: How do I set the switching frequency on TL494CN?
A: Connect RT between pin 6 and Vref (pin 14), CT between pin 5 and GND. Frequency ≈ 1.1 / (RT × CT). Example: RT=22kΩ, CT=1nF → f ≈ 50kHz.
Q: Can TL494CN drive MOSFETs directly?
A: The 200mA output can drive small MOSFETs at low frequency. For large MOSFETs or high-frequency operation, add a gate driver IC (IR2110, TC4420) between TL494 output and MOSFET gate.
Package Contents
- 5× TL494CN DIP-16 PWM Power Controller IC
