SNVA015D February 2000 – January 2022 LM2651
The LM2651 switching regulator provides high efficiency power conversion over a 100:1 load range (1.5 A to 15 mA). This feature makes the LM2651 an ideal fit in battery powered applications.
Synchronous rectification and 75-mΩ internal switches provide up to 97% efficiency. At light loads, the LM2651 enters a low power hysteretic or sleep mode to keep the efficiency high. In many applications, the efficiency still exceeds 80% at 15-mA load.
A shutdown pin is available to disable the LM2651 and reduce the supply current to 7 µA. The IC contains patented current sensing circuitry for current mode control. This feature eliminates the external current sensing required by other current mode DC to DC converters. The IC has a 300-kHz fixed frequency internal oscillator. The high oscillator frequency allows the use of extremely small, low profile components.
The evaluation board can be obtained by ordering part number LM2651_3.3V_EVAL from your local TI sales office, or TI's website at www.ti.com.