LTC1872ES6#TRMPBF (LINEAR TECHNOLOGY)

The LTC1872ES6#TRMPBF 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 under-voltage lockout feature that shuts down the LTC1872 when the input voltage falls below 2.0V. The LTC1872 boasts ±2.5% output voltage accuracy and consumes only 270µA of quiescent current. For applications where efficiency is a prime consideration, the LTC1872 is configured for Burst Mode® operation, which enhances efficiency at low output current. In shutdown, the device draws a mere 8µA. The high 550kHz constant operating frequency allows the use of a small external inductor. The overvoltage comparator in the LTC1872 will turn the external MOSFET off when the feedback voltage has risen 7.5% above the reference voltage of 0.8V. This comparator has a typical hysteresis of 20mV.