Update: 30 September, 2023
LM3691 is a high-accuracy, miniature, 1A step-down DC-DC converter from TI that is optimized for powering ultra-low voltage circuits from a single Li-Ion cell or three cell NiMH/NiCd batteries. It provides up to 1A load current over an input voltage range from 2.3V to 5.5V. There are several different fixed voltage output options available. LM3691 has a mode-control pin that allows the user to select Forced PWM mode or ECO mode that changes modes between gated PWM mode and PWM automatically depending on the load. In ECO mode, LM3691 offers superior efficiency and very low Iq under light load conditions. ECO mode extends the battery life through reduction of the quiescent current during light load conditions and system standby. LM3691 is available in a 6-bump micro SMD package. Only three external surface-mount components are required: a 1μH inductor, a 4.7μF input capacitor and a 4.7μF output capacitor.
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MD5 Checksum: DEC3FB3B488CD34553A47EBD7FA72F24
Publication date: 04 May, 2012
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