The LTC ®3780 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant frequency current mode architecture allows a phase-lockable frequency of up to 400kHz. With a wide 4V to 30V input voltage range and up to 98% efficiency, the LTC3780 is ideal for battery-powered and other high voltage applications.
The LTC3780 is a high-performance buck-boost switching regulator controller designed for automotive, telecom, and battery-operated systems. It utilizes a constant frequency current mode architecture with a phase-lockable frequency of up to 400kHz, allowing operation from input voltages above, below, or equal to the output voltage.
| Input Voltage Range | 4V to 36V |
|---|---|
| Maximum Efficiency | Up to 98% |
| Output Voltage Accuracy | +1% |
| Operating Frequency Range | 200kHz to 400kHz |
| Nominal Oscillator Frequency | 300 kHz |
| Operating Temperature Range (I) | -40°C to 85°C |
The device is available in 24-Lead SSOP and Exposed Pad (5mm x 5mm) 32-Lead QFN packages.
The peak output current for TG1, TG2, BG1, and BG2 pins is rated at less than 3A for durations under 10ms.
Yes, fault protection is provided by an output overvoltage comparator and internal foldback current limiting.