LTC1872ES6#TRMPBF Datasheet PDF - 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.

● High efficiency up to 90%

● High output currents easily achieved

● VOUT limited only by external components

● Constant frequency 550kHz operation

● Burst Mode® operation at light load

● Current mode operation for excellent line and load transient response

● Low quiescent current (270µA)

● Shutdown mode draws only 8µA supply current

● ±2.5% Reference accuracy