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3.7 × 3.5 mm 6 pins top-emitting

IN-PI33QBTPRPGPBPW-XX

3537 · smd · Inolux PI RGBW (single-trace IC, 32 bit) · Inolux Corporation

1-wire RGBW 3.7–5.5 V active

Also sold as IN-PI33QBTPRPGPBPW-XX

At a glance

Colour
RGBW8 bits per channel
Data
1-wiretimed pulses on one line
Supply
3.7–5.5 Vno backup data line
Size
3.7 × 3.5 × 1.9 mm6 pins · top
Max current
45 mA9 mA per channel
PWM
1.2 kHzreset 80 µs
Library support
FastLED WLED Adafruit

3.7 x 3.5 x 1.9 mm RGBW pixel. The suffix after PW is the white option: -30 and -40 are the two LCSC SKUs; the sheet lists 3000, 4000 and 6000 K whites but does not map them to the suffix, so the temperatures are not assigned to the variants. Timing T0H 0.2 / 0.32 / 0.4 us, T1H 0.58 / 0.64 / 1.0 us, reset >80 us; ESD 4 kV. LCSC stock 0 for both on 2026-10-15.

Variants

One row per orderable SKU. Everything not listed is inherited from the part above.

Order codeFaceLensWhite PinsSiliconStatusFirst seenDatasheet
IN-PI33QBTPRPGPBPW-30 — — — 6 — active 2020-08-10 1.01.0 ↗
LCSC C22148673, stock 0. White option -30 (probably 3000 K; not stated).
IN-PI33QBTPRPGPBPW-40 — — — 6 — active 2020-08-10 1.01.0 ↗
LCSC C7454380, stock 0. White option -40 (probably 4000 K; not stated).

Pinout

IN-PI33QBTPRPGPBPW-30IN-PI33QBTPRPGPBPW-40
IN-PI33QBTPRPGPBPW-XX 3537 package, top and side viewPin 1 is ringed. pin 1 NC (no connect), pin 2 GND (ground), pin 3 DIN (data in), pin 4 VDD (power), pin 5 DOUT (data out), pin 6 VDD (power).11 NCno connect22 GNDground33 DINdata in44 VDDpower55 DOUTdata out66 VDDpower3.7 mm3.5 mmtop view1.9 mmside view
  • No connect
  • Ground
  • Data
  • Power
  • Pin 1
  • Cut corner

Outline and pin positions checked against the manufacturer datasheet (C22148673 IN-PI33QBTPRPGPBPW-XX v1.0 p1-2). Pad width and column pitch are estimates; the 2.20 mm callout across the outer pads gives the 1.1 mm row pitch and 0.6 mm is the pad-height callout. Pin 1 (NC) is top-left beside the chamfer. What this means.

  1. 1 NC nc
  2. 2 GND ground
  3. 3 DIN data in
  4. 4 VDD power
  5. 5 DOUT data out
  6. 6 VDD power

Protocol — Inolux PI RGBW (single-trace IC, 32 bit)

Timings shown from datasheet.

Inolux PI RGBW (single-trace IC, 32 bit) bit timingInolux PI RGBW (single-trace IC, 32 bit) bit timing: a zero bit is 300 nanoseconds high then 800 low; a one bit is 750 high then 200 low; reset 80 microseconds low1 · Bit encoding, to scaleDINhighlowbit 0 period 1100 nsbit 1 period 950 nsT0H 300 nsT1H 750 nsT0L 800 nsT1L 200 ns"0" bit"1" bit0200400600800100012001400160018002000time, nsDatasheet lists unequal bit periods (1100 vs 950 ns); each bit is drawn with its own.2 · One frame: 32 bits, most-significant bit firstDIN1701100100071001101017001011001711000010bitch 1 · 8 bitsch 2 · 8 bitsch 3 · 8 bitsch 4 · 8 bitsChannel order not recorded for this protocol · frame = 32 × ~1100 ns ≈ 35.2 µs · example data, first bits 1 0 1 …3 · RESET / latchlast bits of frame 1first bits of frame 2LEDs latch the data they receivedRESET: DIN low ≥ 80 µs (not to scale)4 · Cascade: each DOUT feeds the next DINMCULED 1DINDOUTLED 2DINDOUTLED NDINDOUTLED 1 keeps the first 32 bits, re-shapes the signal and sends the rest out on DOUT;LED 2 keeps the next 32, and so on. The last LED's DOUT is left unconnected.
T0H 300 / T0L 800 · T1H 750 / T1L 200 ns · reset 80 µs source: datasheet

Compatibility

  • protocol compatible SK6812 RGBW

    Frame layout only: 32 bit, G R B W, MSB first, one wire, which is the layout the sk6812-rgbw protocol records. The typical T1H here is 750 ns (640 on the PI33QB sheet), not the 600 ns of the SK6812 rev. 02 table. The Inolux sheets never name SK6812. source ↗

Dating evidence

Nobody announces these parts, so this records what we can actually cite rather than a release date. Library support proves only that the part existed by that date.

  • 2018-05-31 datasheet revision Inolux IN-PI55QATPRPGPBPW-XX revision table: 'Initial Release 1.0 05-31-2018' ↗ day
  • 2020-08-10 datasheet revision Inolux IN-PI33QBTPRPGPBPW-XX revision table: 'Initial Release 1.0 08-10-2020' ↗ day

Where to buy

Stub data — a few rows so purchase links can grow later. Prices are not tracked.

Similar parts

Same protocol or package first, then the same data scheme and colour channels.

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