The LTC1872B is a constant frequency current mode step-up DC/DC controller providing excellent AC and DC load and line regulation. The device incorporates an accurate undervoltage lockout feature that shuts down the LTC1872B when the input voltage falls below 2.0V. The LTC1872B provides a ±2.5% output voltage accuracy and consumes only 270µA of quiescent current. In shutdown, the device draws a mere 8µA. High constant operating frequency of 550kHz allows the use of a small external inductor. The constant frequency operation is maintained down to very light loads, resulting in less low frequency noise generation over a wide load current range. The LTC1872B is available in a 6-lead low profile (1mm) ThinSOT package. For a Burst Mode operation enabled version of the LTC1872B, please refer to the LTC1872 data sheet. Burst Mode LTC1872 Yes LTC1872B No Applications * Optical Communications * Lithium-Ion-Powered Applications * Cellular Telephones * Wireless Devices * Portable Computers * Scanners * Burst Mode™ Operation Disabled for Lower Output Ripple at Light Loads * High Efficiency: Over 90% * High Output Currents Easily Achieved * Wide VIN Range: 2.5V to 9.8V * VOUT Limited Only by External Components https://elecena.pl/product/253549/constant-frequency-current-mode-step-up-dc-dc-controller-in-thinsot 2007-03-03 https://elecena.pl/product/253549/constant-frequency-current-mode-step-up-dc-dc-controller-in-thinsot 2014-07-01 https://elecena.pl/product/253549/constant-frequency-current-mode-step-up-dc-dc-controller-in-thinsot 2025-01-21