Blinking LED Circuit Design

flux

I've made a plan, and started work on it.

Started implementing a plan

#Goal

- Route the SW net on the existing 30mm x 25mm 2-layer boost converter PCB, ensuring a compact and minimal trace connection between U1:SW, L1:P2, and D1:A without disturbing other components or nets.

#Implementation plan

1. Inspect the existing PCB layout:

1. Verify and identify the SW net endpoints: U1:SW, L1:P2, and D1:A.

2. Confirm that all component placements and other net routings (FB divider, VIN, VOUT, GND) remain intact.

2. Route the SW net:

1. Use the top-layer routing to create a direct and short trace connecting U1:SW, L1:P2, and D1:A.

2. Avoid adding unnecessary vias or deviations and steer clear of the feedback divider/sense area.

3. Validate the routing:

1. Ensure that the SW trace is the only trace modified.

2. Confirm that no other net or component placement has been disturbed.

#Success criteria

- The SW net should have a minimal length and direct connection between U1:SW, L1:P2, and D1:A.

- No component placement changes or disturbances to other nets (FB, VIN, VOUT, GND) occur.

Execution stopped due to insufficient credits.

0:17

flux

Work done
  • I could not continue execution because the session has no remaining execution credits.
  • No project manipulation was performed in this step, so the existing 30mm × 25mm layout and current routing state remain unchanged.
Success criteria review
  • ❌ SW endpoints were not re-inspected in this step.
  • ❌ The SW net was not routed in this step.
  • ✅ No other components or nets were disturbed by this step.
Next steps
  • When execution is available again, proceed with: inspect U1/L1/D1 pad locations, route only the SW net on the top layer with the shortest practical path between U1:SW, L1:P2, and D1:A, then validate that FB, VIN, VOUT, GND, and component placement are unchanged.
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3.7V Li-Ion Boost Converter

3.7V Li-Ion Boost Converter thumbnail
High-efficiency 3.7V Li-Ion boost converter for the Tremendous Azure Robot Vacuum auxiliary power rail.

Properties

3.7V nominal Li-ion/LiPo, expected usable range approximately 3.0V to 4.2V

Keep MT3608, diode, and inductor temperature rise acceptable under 1A load; verify with prototype or thermal simulation

>=85% target at nominal load; final value requires layout and load validation

Minimize SW loop area; place L1, D1, C1, C2 close to U1; use short wide power traces

5V assumed target because output requirement was missing

<=50mV peak-to-peak assumed with low-ESR output capacitor and compact layout

SOT-23-6 IC, SMA diode, 0805/1206 passives, and 5.08mm terminal blocks selected for hand soldering feasibility

1A assumed continuous auxiliary rail

Pricing & Availability

Distributor

Qty 1

Arrow

$0.11–$0.32

Digi-Key

$0.03–$0.69

LCSC

$0.47–$1.17

Mouser

$0.60–$0.68

TME

$0.17

Verical

$0.04–$0.56

Controls