The LM3678 step-down DC-DC converter is optimized for powering low-voltage circuits from
a single Li-Ion cell battery and input voltage rails from 2.5 V to 5.5 V. It provides up to 1.5-A
load current, over the entire input voltage range. LM3678 offers a 0.8V or 1.2V option. One of the
pair of voltages is set through the VSELECT pin.
LM3678 operates in PWM mode with a fixed frequency of 3.3 MHz. Internal synchronous
rectification provides high efficiency during PWM mode operation. In shutdown mode, the device
turns off and reduces battery consumption to 0.01 µA (typical).
The LM3678 is available in a 3mm x 3mm DSC-10 package. A high switching frequency of
3.3 MHz (typical) allows use of tiny surface-mount components. Only three external surface-mount
components, an inductor and two ceramic capacitors, are required (solution size less than 33
mm2). For voltages other than the voltage shown, contact TI or your
distributor.
The LM3678 step-down DC-DC converter is optimized for powering low-voltage circuits from
a single Li-Ion cell battery and input voltage rails from 2.5 V to 5.5 V. It provides up to 1.5-A
load current, over the entire input voltage range. LM3678 offers a 0.8V or 1.2V option. One of the
pair of voltages is set through the VSELECT pin.
LM3678 operates in PWM mode with a fixed frequency of 3.3 MHz. Internal synchronous
rectification provides high efficiency during PWM mode operation. In shutdown mode, the device
turns off and reduces battery consumption to 0.01 µA (typical).
The LM3678 is available in a 3mm x 3mm DSC-10 package. A high switching frequency of
3.3 MHz (typical) allows use of tiny surface-mount components. Only three external surface-mount
components, an inductor and two ceramic capacitors, are required (solution size less than 33
mm2). For voltages other than the voltage shown, contact TI or your
distributor.