LM2651MTC-3.3/NOPB

The LM2651MTC-3.3/NOPB is a synchronous Switching Regulator provides high-efficiency power conversion over a 100:1 load range (1.5A to 15mA). This feature makes the LM2651 an ideal fit in battery-powered applications that demand long battery life in both run and standby modes. Synchronous rectification is used to achieve up to 97% efficiency. At light loads, the LM2651 enters a low power hysteretic or sleep mode to maintain high efficiency. In many applications, the efficiency still exceeds 80% at 15mA load. A shutdown pin is available to disable the LM2651 and reduce the supply current to less than 10µA. The LM2651 contains a patented current sensing circuitry for current mode control. This feature eliminates the external current sensing resistor required by other current-mode DC-to-DC converters. It has a 300kHz fixed frequency internal oscillator. The high oscillator frequency allows the use of extremely small, low-profile components.

• Ultrahigh efficiency up to 97%
• Patented current sensing for current mode control
• Input undervoltage lockout
• Adjustable soft-start
• Current limit and thermal shutdown