LM2841 Datasheet | National Semiconductor Corporation

LM2840/LM2841/LM2842/LM2840Q/LM2841Q/LM2842Q 100 / 300 / 600 mA Input Step-Down DC/ DC Regulator in Thin SOT-23 LM2840/LM2841/LM2842/ LM2840Q/LM2841Q/ LM2842Q August 23, 2011 100/300/600 mA Input Step-Down DC/DC Regulator in Thin SOT-23 General Description The LM2840, LM2841 and LM2842 are PWM DC/DC buck (step-down) regulators. With a wide input range from 4.5V-42V, they are suitable for a wide range of applications such as power conditioning from unregulated sources. They feature a low RDSON (0.9Ω typical) internal switch for maximum efficiency (85% typical). Operating frequency is fixed at 550 kHz (X version) and 1.25 MHz (Y version) allowing the use of small external ponents...