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TL494CD SOP-16 PWM Controller IC TL494 SMD (5-Pack)
TL494CD SOP-16 PWM Controller IC TL494 SMD (5-Pack)
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TL494CD SOP-16 PWM Controller IC — Dual Output, 300kHz
The TL494CD is the surface-mount (SOP-16) version of the classic TL494 fixed-frequency PWM controller IC. With a wide supply range of 7V–41V, dual output transistors, and a programmable oscillator up to 300kHz, it remains the industry standard for push-pull, half-bridge, and full-bridge SMPS designs.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | TL494CD |
| Package | SOP-16 (SMD) |
| Supply Voltage | 7V – 41V |
| Oscillator Frequency | 1kHz – 300kHz |
| Output Configuration | Dual NPN transistors (push-pull or parallel) |
| Output Current (each) | 200mA sink/source |
| Reference Voltage | 5V ±1% |
| Error Amplifiers | 2 (voltage feedback + current limit) |
| Dead-Time Control | Programmable via DTC pin |
| Quantity | 5 pieces |
Why Choose TL494CD?
- Industry Standard — Decades of proven reliability in SMPS and power supply designs
- Dual Error Amplifiers — Independent voltage feedback and current limiting in one IC
- Flexible Output Modes — Push-pull (180° phase shift) or parallel (single-ended) output
- Programmable Dead Time — Prevents shoot-through in bridge topologies
- SOP-16 SMD — Compact footprint vs. DIP-16, ideal for modern PCB designs
Typical Applications
- Push-pull and half-bridge SMPS (ATX power supplies, DC-DC converters)
- Motor speed controllers (PWM-based DC motor drives)
- Battery charger controllers
- Inverter and UPS control circuits
- Adjustable bench power supply controllers
Compatible With
Pin-compatible with TL494CN (DIP-16), KA7500C, SG3524 (similar function). Works with IR2110, IR2113 gate drivers in bridge topologies.
FAQ
Q: What’s the difference between TL494CD and TL494CN?
A: TL494CD is SOP-16 (SMD); TL494CN is DIP-16 (through-hole). Electrically identical.
Q: How do I set the switching frequency?
A: f = 1.1 / (RT × CT). Use RT = 10kΩ and CT = 0.01μF for ~11kHz, or adjust for your target frequency.
Package Contents
- 5× TL494CD SOP-16 PWM Controller IC
