The Liwei dry battery boost board solution is designed for portable audio devices. It steps the low voltage of 1–4 dry cells up to the working voltage required by the audio circuit (3.3 V / 5 V / customizable) with a high-efficiency DC-DC architecture, low output ripple and a very low quiescent current.
Key Specifications
| Input voltage | 1.5–6 V (1–4 AA/AAA cells) |
| Output voltage | 3.3 V / 5 V / customizable |
| Maximum output current | 1–2 A |
| Conversion efficiency | ≥90% |
| Output ripple | <50 mV (full load) |
| Quiescent current | <10 μA |
| Protection functions | Over-current / over-voltage / reverse polarity / short circuit |
| PCB area | Customizable miniature layout |
Solution Highlights
- Ultra-low ripple power — output ripple under 50 mV gives the audio circuit a clean supply so sound quality is not degraded by power noise.
- High-efficiency conversion — at least 90% conversion efficiency makes full use of battery energy and extends runtime.
- Wide input range — supports 1–4 dry cells and is compatible with both AA and AAA battery types.
- Multiple protection — four-fold protection of over-current, over-voltage, reverse polarity and short circuit makes the solution safe and reliable.
- Miniature design — ultra-small PCB size fits easily into all kinds of portable audio products.
Application Scenarios
Portable headphone amplifiers, wireless microphones, portable speakers, industrial intercom headsets, outdoor audio equipment and emergency communication devices.
Solution Consultation
The Liwei dry battery boost board solution has been applied in several industrial communication headset products. Contact us for the solution specification, efficiency curves and sample testing.
