MBI5043GP-A from MBI, in a SSOP-24. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	GND	power_in	Ground return for the control logic and constant-current output stages. Tie to system 0 V; IGND up to 720 mA.
2	SDI	input	Serial data input to the 16-bit shift register. Sampled on the DCLK rising edge; VIH=0.7VDD, VIL=0.3VDD, Schmitt-trigger input.
3	DCLK	input	Data shift clock input. Data on SDI is shifted on the rising edge; also counted while LE is high to select control commands. Up to 30 MHz at VDD=5 V (25 MHz at 3.3 V).
4	LE	input	Latch enable / data-strobe input. Combined with the number of DCLK rising edges captured while LE is high, encodes the control command (data latch, global latch, read/write status register). Internal pull-down (250-800 kOhm) to GND.
5	OUT0	output	Constant-current LED sink output channel 0 (open-drain). Sinks 1-45 mA (VDD=5 V) or 1-30 mA (VDD=3.3 V) set by R-EXT; VDS up to 17 V.
6	OUT1	output	Constant-current LED sink output channel 1. Programmable current per external R-EXT and 6-bit gain; PWM controlled by GCLK.
7	OUT2	output	Constant-current LED sink output channel 2.
8	OUT3	output	Constant-current LED sink output channel 3.
9	OUT4	output	Constant-current LED sink output channel 4.
10	OUT5	output	Constant-current LED sink output channel 5.
11	OUT6	output	Constant-current LED sink output channel 6.
12	OUT7	output	Constant-current LED sink output channel 7.
13	OUT8	output	Constant-current LED sink output channel 8.
14	OUT9	output	Constant-current LED sink output channel 9.
15	OUT10	output	Constant-current LED sink output channel 10.
16	OUT11	output	Constant-current LED sink output channel 11.
17	OUT12	output	Constant-current LED sink output channel 12.
18	OUT13	output	Constant-current LED sink output channel 13.
19	OUT14	output	Constant-current LED sink output channel 14.
20	OUT15	output	Constant-current LED sink output channel 15 (last channel; SDO shifts out from this stage).
21	GCLK	input	Grayscale clock input. Drives the 16-bit PWM comparator that generates output pulse widths; up to 33 MHz (16.5 MHz in 2x-frequency Scrambled-PWM mode) at VDD=5 V.
22	SDO	output	Serial data output; the shift-register tail. Connect to the SDI of the next MBI5043 for daisy-chaining. Push-pull output, IOH/IOL = 1 mA.
23	R-EXT	passive	External current-set resistor pin. A single resistor from R-EXT to GND programs the nominal constant-current level for all 16 outputs (e.g. ~700 Ohm for 20 mA typical characterization).
24	VDD	power_in	Logic and driver supply, 3.0-5.5 V (absolute max 7 V). Decouple with a 100 nF ceramic close to the pin.

Key specifications

Parameter	Value
Manufacturer	MBI
Package	SSOP-24
Category	LED-drv
Pins	24

Ordering variants

Same part, different packaging or reel option.

MBI5043GP-A
MBI5043GP-AGM

CAD (KiCad official)

Symbol: MBI5043GP-A
Footprint: Package_SO:SSOP-24_5.3x8.2mm_P0.65mm
3D model: SSOP-24 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`mbi5043gp-a.step`	315 KB	You want the bare part, or you mark your own boards.
`mbi5043gp-a-etched.step`	3.0 MB	You want the part with `MBI5043GP-A` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 765 faces against 387 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: MBI datasheet (23 pp, sha256 81805f1814ff4a53, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF