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3.7 × 3.7 mm 4 pins top-emitting

L993L-LEPGBC-3I

3535 · smd · AOP single-wire IC with advance function mode · American Opto Plus LED

1-wire RGB 3.3–5.5 V active

Also sold as L993L-LEPGBC

At a glance

Colour
RGB8 bits per channel
Data
1-wiretimed pulses on one line
Supply
3.3–5.5 Vno backup data line
Size
3.7 × 3.7 × 1.9 mm4 pins · top
Max current
36 mA12 mA per channel
PWM
—reset 250 µs
Library support
FastLED WLED Adafruit

Datasheets disagree: the title is ‘3.68 x 3.68 x 1.95 mm’ but the package drawing dimensions the top view 3.68 mm wide and the side view 3.48 mm; the sibling L993L-QEPGBC-3I titles it 3.68 x 3.48. LCSC lists the package as ‘SMD3535-2P’ although the sheet has four pins. Water-clear lens, AlGaInP red, InGaN blue and green, 500 pcs on a 7 inch reel. LCSC stock 0 on 2026-10-15.

Variants

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

Order codeFaceLensWhite PinsSiliconStatusFirst seenDatasheet
L993L-LEPGBC-3I — clear — 4 — active 2020-01-21 1.1
LCSC C7215665, stock 0. LCSC package ‘SMD3535-2P’.

Pinout

L993L-LEPGBC-3I
L993L-LEPGBC-3I 3535 package, top and side viewPin 1 is ringed. pin 1 VDD (power), pin 2 DOUT (data out), pin 3 VSS (ground), pin 4 DIN (data in).11 VDDpower22 DOUTdata out33 VSSground44 DINdata in3.7 mm3.5 mmtop view2 mmside view
  • Power
  • Data
  • Ground
  • Pin 1
  • Cut corner

Outline and pin positions checked against the manufacturer datasheet (C7215665 L993L-LEPGBC-3I v1.1 p1-2). Top view: 1 VDD top-left, 2 DOUT bottom-left, 3 VSS bottom-right (cut corner), 4 DIN top-right. Pads 0.9 x 0.8 mm; 1.8 mm between the columns' inner edges and 1.0 mm between the rows (bottom view); the PCB land is 1.1 x 1.0 mm. What this means.

  1. 1 VDD power
  2. 2 DOUT data out
  3. 3 VSS ground
  4. 4 DIN data in

Protocol — AOP single-wire IC with advance function mode

Timings shown from datasheet.

AOP single-wire IC with advance function mode bit timingAOP single-wire IC with advance function mode bit timing: a zero bit is 300 nanoseconds high then 900 low; a one bit is 900 high then 300 low; tolerance plus or minus 150 nanoseconds; reset 250 microseconds low1 · Bit encoding, to scaleDINhighlowbit 0 period 1200 nsbit 1 period 1200 nsT0H 300 ±150 nsT1H 900 ±150 nsT0L 900 ±150 nsT1L 300 ±150 ns"0" bit"1" bit020040060080010001200140016001800200022002400time, ns± tolerance on each falling edge2 · One frame: 24 bits, most-significant bit firstDIN170110010007100110101700101100bitch 1 · 8 bitsch 2 · 8 bitsch 3 · 8 bitsChannel order not recorded for this protocol · frame = 24 × ~1200 ns ≈ 28.8 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 ≥ 250 µs (not to scale)4 · Cascade: each DOUT feeds the next DINMCULED 1DINDOUTLED 2DINDOUTLED NDINDOUTLED 1 keeps the first 24 bits, re-shapes the signal and sends the rest out on DOUT;LED 2 keeps the next 24, and so on. The last LED's DOUT is left unconnected.
T0H 300 / T0L 900 · T1H 900 / T1L 300 ns · ±150 ns · period 1200 ns · reset 250 µs source: datasheet

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.

  • 2020-01-21 datasheet revision American Opto Plus L993L-LEPGBC-3I data sheet, 'Version 1.1 Date: 1/21/2020' ↗ 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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