TM5020A from TM Shenzhen Titan Micro Elec, in a SSOP-24-150mil. 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 control logic and drive current loop.
2	SDI	input	Serial data input with Schmitt-trigger buffered input; data is shifted into the 16-bit shift register on the rising edge of CLK.
3	CLK	input	Serial data shift clock input with Schmitt-trigger buffered input; data is shifted on the rising edge. Max clock frequency 25 MHz.
4	LE	input	Latch enable / data-latch control input with Schmitt-trigger buffer. When LE is high, serial data is transferred into the output latch; when LE is low, data is latched. Internal pull-down to GND (~270 kΩ typical).
5	OUT0	output	Constant-current sink output channel 0. Withstands up to 11 V, sinks 3-36 mA (VDD=5V) or 3-20 mA (VDD=3.3V) as set by R-EXT.
6	OUT1	output	Constant-current sink output channel 1.
7	OUT2	output	Constant-current sink output channel 2.
8	OUT3	output	Constant-current sink output channel 3.
9	OUT4	output	Constant-current sink output channel 4.
10	OUT5	output	Constant-current sink output channel 5.
11	OUT6	output	Constant-current sink output channel 6.
12	OUT7	output	Constant-current sink output channel 7.
13	OUT8	output	Constant-current sink output channel 8.
14	OUT9	output	Constant-current sink output channel 9.
15	OUT10	output	Constant-current sink output channel 10.
16	OUT11	output	Constant-current sink output channel 11.
17	OUT12	output	Constant-current sink output channel 12.
18	OUT13	output	Constant-current sink output channel 13.
19	OUT14	output	Constant-current sink output channel 14.
20	OUT15	output	Constant-current sink output channel 15.
21	OE	input	Output enable, active-low. When OE is low, OUT0-OUT15 are enabled; when OE is high, outputs are turned off. Internal pull-up resistor to VDD (~250 kΩ typical).
22	SDO	output	Serial data output; presents shifted data on the rising edge of CLK. Cascade to the SDI pin of the next TM5020A for daisy-chained drivers.
23	R-EXT	passive	Constant-current setting pin. Connect an external resistor from R-EXT to GND to set the OUT0-OUT15 output current; IOUT = (1.18 V / R_IREF) x 15 (e.g. 600 Ω → ~29.5 mA, 1 kΩ → ~17.7 mA).
24	VDD	power_in	Chip power supply. Operating range 3.3 V to 5 V (absolute max 7.0 V).

Key specifications

Parameter	Value
Manufacturer	TM Shenzhen Titan Micro Elec
Package	SSOP-24-150mil
Category	LED-drv
Pins	24

CAD (KiCad official)

Symbol: TM5020A
Footprint: Package_SO:SSOP-24_5.3x8.2mm_P0.65mm
3D model: SSOP-24-150mil (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tm5020a.step`	315 KB	You want the bare part, or you mark your own boards.
`tm5020a-etched.step`	2.4 MB	You want the part with `TM5020A` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 615 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: TM Shenzhen Titan Micro Elec datasheet (12 pp, sha256 3ace3c01c25c978e, retrieved 2026-08-17, tier: lcsc)
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