This article introduces the LTC3388-1 and LTC3388-3 high efficiency step-down regulators which draw only 720nA (typ) of DC current at no load while maintaining output regulation.
The document describes the LTC3388-1 and LTC3388-3 integrated synchronous step-down regulators, which provide a regulated output while consuming only 720nA of quiescent current. These devices accept inputs up to 20V and can deliver up to 50mA of load current.
| Quiescent Current (Sleep State) | 720nA |
|---|---|
| Input Voltage Range | up to 20V |
| Load Current | 50mA |
| Output Voltages (LTC3388-1) | 1.2V, 1.5V, 1.8V, and 2.5V |
| Output Voltages (LTC3388-3) | 2.8V, 3.0V, 3.3V, and 5.0V |
| Standby Quiescent Current (EN low) | 520nA |
The converter consumes a mere 720nA of quiescent current.
When EN is low, the buck is turned off and only 520nA of quiescent current appears at Vyy.