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UC3843ADTR
Current Mode PWM Controller
Packaging
| Package | PIN: | SOIC (D) | 14 |
|---|---|
| Temp: | C (0 to 70) |
| Carrier: | Cut Tape |
| Qty | Price |
|---|---|
| 1-9 | $1.07 |
| 10-24 | $0.95 |
| 25-99 | $0.88 |
| 100-249 | $0.75 |
| 250-499 | $0.70 |
| 500-749 | $0.57 |
| 750-999 | $0.45 |
| 1000+ | $0.41 |
Features
- Optimized for Off-Line and DC-DC Converters
- Low Start-Up Current (< 0.5 mA)
- Trimmed Oscillator Discharge Current
- Automatic Feedforward Compensation
- Pulse-by-Pulse Current Limiting
- Enhanced Load Response Characteristics
- Undervoltage Lockout With Hysteresis
- Double Pulse Suppression
- High-Current Totem Pole Output
- Internally-Trimmed Bandgap Reference
- Up to 500-kHz Operation
- Create a Custom Design Using the UCx84xA With the WEBENCH® Power Designer
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Texas Instruments UC3843ADTR
The UCx84xA family of control devices is a pin-for-pin compatible improved version of theUCx84x family. Providing the necessary features to control current-mode or switched-mode powersupplies, this family of devices has many improved features: startup current is less than 0.5 mA,oscillator discharge is trimmed to 8.3 mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2 V for VCC over 5 V.