LM3671MF-ADJ/NOPB

The LM3671MF-ADJ is a Step-down DC-DC Converter, optimized for powering low voltage circuits from a single Li-ion cell battery and input voltage rails from 2.7 to 5.5V. It provides up to 600mA load current, over the entire input voltage range. This converter is available in an adjustable output voltage version range from 1.1 to 3.3V. The converter offers superior features and performance for mobile phones and similar portable systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. During PWM mode, the device operates at a fixed-frequency of 2MHz (typical). Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16µA (typical) during light load and standby operation. Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01µA (typical).

• 16µA Typical quiescent current
• Automatic PFM/PWM mode switching
• 100% Duty cycle mode
• Internal synchronous rectification for high efficiency
• Internal soft-start
• 0.1µA Typical shutdown current
• Operates from a single Li-ion cell
• Only three tiny surface-mount external components required
• Current overload protection