LM3691
Overview
The LM3691 step-down DC-DC converter is optimized for powering ultra-low-voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd batteries. It provides up to 1-A load current over an input voltage range from 2.3 V to 5.5 V.
- 1 Input Voltage: 2.3 V to 5.5 V
- Output Voltage: 0.75 V to 3.3 V
- ±1% DC Output Voltage Precision
- 4-MHz Switching Frequency
- 64-μA (typical) Quiescent Current in ECO Mode
- 1-A Maximum Load Capability
- Automatic ECO/PWM Mode Switching
- MODE Pin to Select ECO/Forced PWM Mode
- Current Overload and Thermal Shutdown Protections
- Only Three Tiny Surface-Mount External Components Required (Solution Size Less Than 15 mm2)
