Sistema de RPM con LM393

5:34

Searching: "Ultra‑low quiescent boost converter to produce regulated 3.3 V from a single cell (input 0.9–1.6 V). Iq <= 5 uA (prefer <=2 uA). Must support short RF burst loads 60–120 mA with minimal droop, automatic PFM/PWM or hysteretic mode, enable pin, small SMD (SOT‑23‑5/6 or 2x2 DFN), external inductor."

Searching: "Fixed 3.3 V boost regulator, ultra‑low quiescent current <=5 uA, input down to 0.9 V, supports 100 mA peak bursts for RF transceiver, EN pin, SOT‑23‑5/6 or 2x2 DFN packages."

Searching: "Boost converter with true output disconnect/bypass or low‑loss bypass for shutdown; 3.3 V output, ultra‑low Iq, small SMD packages."

Found 192 results.

Searching: "Ultra-low quiescent current boost converter IC to generate regulated 3.3 V from a single 1.5 V AA cell (input 0.9–1.6 V). Must support short RF burst loads from an NRF24L01+ transceiver (peak 60–120 mA range) with minimal droop; average load a few mA. Target Iq <= 5 uA (preferably <= 2 uA), automatic PFM/PWM or hysteretic operation for high efficiency at light load, enable/shutdown pin, small SMD package (SOT-23-5/6 or 2x2 DFN), external inductor (2.2–10 uH typical). Options with true output disconnect or bypass are nice-to-have. Prioritize widely available, active, 3.3 V fixed or adjustable versions. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging","metadata"] hitsPerPage: 50 page: 0"

Finished searching for a component.

Searching for components.

Finished searching for components.

Searching for components.

Searching library for: "Ultra-low Iq boost regulator for single AA to 3.3 V with Iq <= 2 uA, input start <= 0.9 V, supports 60–120 mA burst loads; small SOT-23-5/6 or 2x2 DFN; candidates like TPS61099 family, LTC3525-3.3, MCP16251/2. Return adjustable or fixed 3.3 V options with enable pin and datasheet link."

Creating search plan for: "Ultra-low Iq boost regulator for single AA to 3.3 V with Iq <= 2 uA, input start <= 0.9 V, supports 60–120 mA burst loads; small SOT-23-5/6 or 2x2 DFN; candidates like TPS61099 family, LTC3525-3.3, MCP16251/2. Return adjustable or fixed 3.3 V options with enable pin and datasheet link. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging","metadata"] hitsPerPage: 50 page: 0"

Searching: "Boost regulator that starts from ≤0.9 V (single AA), ultra-low quiescent current ≤2 µA, outputs 3.3 V (fixed or adjustable), supports 60–120 mA burst loads, SOT-23-5 or 2×2 DFN package, with EN pin (enable)."

Found 106 results.

Searching: "Ultra-low Iq boost regulator for single AA to 3.3 V with Iq <= 2 uA, input start <= 0.9 V, supports 60–120 mA burst loads; small SOT-23-5/6 or 2x2 DFN; candidates like TPS61099 family, LTC3525-3.3, MCP16251/2. Return adjustable or fixed 3.3 V options with enable pin and datasheet link. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging","metadata"] hitsPerPage: 50 page: 0"

Finished searching for a component.

Searching for components.

Finished searching for components.

Looking for "Quiescent current (no-load) specification" in TPS61099

Looking for "Recommended operating conditions input voltage range or startup voltage" in TPS61099

Looking for "Peak switch current or inductor current limit" in TPS61099

Looking for "EN pin description and logic thresholds" in TPS61099

Looking for "Quiescent current (no-load) specification" in 20005173B.pdf

Looking for "Peak switch current or inductor current limit" in tps61322.pdf

Looking for "Recommended operating conditions input voltage range or startup voltage" in tps61322.pdf

Looking for "Quiescent current (no-load) specification" in tps61322.pdf

Looking for "Recommended operating conditions input voltage range or startup voltage" in 20005173B.pdf

Looking for "Peak switch current or inductor current limit" in 20005173B.pdf

Looking for "EN pin description and logic thresholds" in 20005173B.pdf

Looking for "EN pin description and logic thresholds" in tps61322.pdf

Looking for "Quiescent current (no-load) specification" in tps61097a-33.pdf

Looking for "EN pin description and logic thresholds" in tps61097a-33.pdf

Looking for "Recommended operating conditions input voltage range or startup voltage" in tps61097a-33.pdf

Looking for "Peak switch current or inductor current limit" in tps61097a-33.pdf

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

51 days

GND

VCC

Reviews

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