Other Parts Discussed in Thread: TPS63901
Hi everyone,
I’m designing a battery-operated device and I need a single-inductor buck-boost converter that can provide a constant 3.3 V output when the battery voltage varies from 2.0 V up to 4.5 V.
Requirements:
- Input range: 2.0 V to 4.5 V
- Output: 3.3 V fixed
- Very low quiescent current (sub-µA ideal, for long battery life)
- Stable regulation in both buck and boost regions
- Decent output current (around 50 -60 mA continuous is enough)
Primary use case:
An MCU-based IoT/battery device that must maintain 3.3 V even when the battery drops near 2.0 V. Standby power leakage must be extremely low.
If anyone has real-world experience with these parts in battery applications or can suggest a better buck-boost IC with ultra-low standby current, I would appreciate your input. Also open to recommended inductors, layout tips, or known pitfalls in these devices.
Thanks in advance!
