Description
LM2647MTC/NOPB Texas Instruments - Yeehing Electronics
5.5-V to 28-V, dual-channel synchronous buck controller
Pricing (USD)
| Quantity | Unit Price |
| 1 — 99 | 3.846 |
| 100 — 249 | 3.135 |
| 250 — 999 | 2.464 |
| 1,000 + | 1.46 |
The above prices are for reference only.
Specifications
| Manufacturer | Texas Instruments |
| Product Category | Switching Controllers |
| RoHS | Y |
| Number of Outputs | 2 Output |
| Switching Frequency | 200 kHz to 500 kHz |
| Duty Cycle - Max | 75 % |
| Input Voltage | 5.5 V to 28 V |
| Output Voltage | 0.6 V to 5 V |
| Output Current | 20 A |
| Minimum Operating Temperature | - 5 C |
| Maximum Operating Temperature | + 125 C |
| Mounting Style | SMD/SMT |
| Package / Case | TSSOP-28 |
| Packaging | Tube |
| Operating Temperature Range | - 5 C to + 125 C |
| Series | LM2647 |
| Type | Synchronous Buck Controller |
| Brand | Texas Instruments |
| Moisture Sensitive | Yes |
| Operating Supply Current | 2.5 mA |
| Product Type | Switching Controllers |
| Factory Pack Quantity | 48 |
| Subcategory | PMIC - Power Management ICs |
| Unit Weight | 0.014215 oz |
For more information, please refer to datasheet
Documents
| LM2647MTC/NOPB Datasheet |
More Information
The LM2647 is an adjustable 200-500kHz dual channel voltage-mode controlled high-speed synchronous buck regulator controller ideally suited for battery powered applications such as laptop and notebook computers. The LM2647 requires only N-channel FETs for both the upper and lower positions of each synchronous stage. It features line feedforward to improve the response to input transients. At very light loads, the user can choose between the high-efficiency Pulse-skip mode or the constant frequency Forced-PWM mode. Lossless current limiting without the use of external sense resistors is made possible by sensing the voltage drop across the bottom FET. A unique adaptive duty cycle clamping technique is incorporated to significantly reduce peak currents under abnormal load conditions. The two independently programmable outputs switch 180° out of phase (interleaved switching) to reduce the input capacitor and filter requirements. The input voltage range is 5.5V to 28V while the output voltages are adjustable down to 0.6V.
