Sistema de RPM con LM393
Thought for 5 mins 34 sec
Here are strong ultra‑low‑Iq 1xAA-to-3.3 V boost candidates from the Flux library, suitable for NRF24L01+ burst loads. I included direct library links plus Datasheet links and package codes.
Shortlist: ultra‑low Iq 1.5 V -> 3.3 V boost converters
Table
| Part | UID | MPN | Package | Datasheet |
|---|---|---|---|---|
| TPS61097A-33DBVT | db4efdec-d5ae-48aa-a8a8-cea7c3ee5bb3 | TPS61097A-33DBVT | SOT‑23‑5 (SOT‑753) | Datasheet |
| TPS613221ADBV | 10249418-8e88-4c98-8c93-a7c7e2340d4c | TPS613221ADBV | SOT‑23‑5 | Datasheet |
| TPS61099DRV | ac0a6360-fd67-4138-98b6-36d34b2cbd03 | TPS61099DRV | WSON‑6 2x2 mm | Datasheet |
| MCP16251T-I/CH | 8327c70a-03d3-438e-b7ef-b42d638fda9b | MCP16251T-I/CH | SOT‑23‑6 | Datasheet |
Why these fit (datasheet-verified key points)
- TPS61097A-33DBVT (best ultra‑low Iq with EN): Quiescent current IQ = 2–4 µA (min/typ); VIN operating range 0.9–5.5 V; has EN pin; switch current limit (typ) 400 mA. Source: TI datasheet.
- TPS613221ADBV (best burst headroom from 0.9 V, fixed 3.3 V): VIN 0.9–5.5 V; startup ~0.87 V (typ); peak current limit family options up to >1 A; no dedicated EN pin (uses external true-shutdown). IQ = 6.5 µA typ. Source: TI datasheet.
- TPS61099DRV (adjustable, very compact, low-power family): Adjustable 1.8–5.5 V output, 2x2 mm WSON. I can verify Iq/startup in the datasheet if you choose this family.
- MCP16251T-I/CH (simple adjustable option with EN): No‑load input current 14–25 µA; startup ~0.82 V (typ at 3.3 V/1 mA), runs down to ~0.35 V after start; EN high ~70% VIN. Source: Microchip datasheet.
Quick guidance
- Prioritize TPS61097A-33DBVT if minimizing sleep drain is critical and your NRF24L01+ burst current is modest (tens of mA). It has verified ultra‑low Iq and an EN pin.
- Choose TPS613221ADBV if you need higher burst current margin (>~100 mA) directly from a single AA with 0.9 V start, and you can accept higher Iq and no EN pin.
- Prefer TPS61099DRV if you want adjustable 3.3 V in a tiny package and likely very low Iq; I will confirm exact Iq/startup before locking in.
Want me to add one of these to your project and pull in its recommended inductor and capacitors, then wire it to the ATtiny85 and NRF24L01+? Tell me which MPN you prefer, and I will proceed.
Pick TPS61097A-33
Verify TPS61099 datasheet
Size output capacitor
Check assembly availability
