The SP7651 is a wide input voltage range 3A, 900kHz buck regulator. It has a step-down capability from 2.5V to 20V, with an output voltage down to 0.8V. It has a 3A output capability (up to 5A with air flow) and built-in low RDSON power FETs (typical value of 40 mΩ). The design is highly integrated with minimal components. The regulator operates at a fixed frequency of 900 kHz. It features UVLO detection for both VCC and VIN, over temperature protection, and short circuit protection with auto-restart. The wide bandwidth amplifier allows for type II or III compensation. It has a programmable soft start and fast transient response. High efficiency of greater than 92% is possible. The regulator can perform asynchronous start-up into a pre-charged output. It is available in a small 7mm x 4mm DFN package.
The SP7651 is a highly integrated, wide input voltage range buck regulator optimized for high efficiency. It features a fixed 900kHz PWM voltage mode architecture and supports an output voltage down to 0.8V using its internal low Rds(on) power FETs.
Key protection features include undervoltage lockout (UVLO), thermal shutdown, and short circuit protection with auto-restart. The device is available in a space-saving 7mm x 4mm DFN package.
| Output Current | 3A |
|---|---|
| Operating Frequency | 900 kHz |
| Output Voltage Range | Down to 0.8V |
| Input Voltage Range | 2.5V to 20V |
| Package Type | 7mm x 4mm DFN |
| Efficiency | >92% |
The maximum output current is 3A.
It includes an internal thermal shutdown at 145°C with a recovery temperature of 135°C.
Yes, the device allows programming the output voltage down to 0.8V via the Vpp pin.