TPS54200DDCR from Texas Instruments, in a SOT-23-6. 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	Power ground return for the controller and low-side MOSFET source.
2	SW	output	Switching node connected between the integrated high-side and low-side MOSFETs. Connects to the external inductor of the buck converter. Absolute max −0.3 V to 30 V.
3	VIN	power_in	Input supply voltage, 4.5 V to 28 V recommended (absolute max 30 V). Bypass with a local ceramic capacitor to GND.
4	FB	input	LED current sense feedback input. Regulates to 205 mV (analog dim) or 100 mV (PWM dim) across the external sense resistor. Absolute max −0.3 V to 7 V.
5	PWM	input	Dimming control input with internal pull-down (default low). In analog dimming mode the internal reference tracks the PWM duty cycle; in PWM dimming mode the LED current is gated ON during the PWM high period. Thresholds ~1.0 V (PWM-dim identify) and 0.35-0.55 V shutdown.
6	BOOT	passive	Bootstrap capacitor node for the high-side MOSFET gate drive. Connect a ceramic capacitor between BOOT and SW. BOOT-SW absolute max 7 V; UVLO ~2.1 V rising.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-23-6
Category	LED-drv
Pins	6

Ordering variants

Same part, different packaging or reel option.

TPS54200DDCR
TPS54200DDCRDDCT

CAD (KiCad official)

Symbol: TPS54200DDCR
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (38 pp, sha256 2c400bd6085d62f5, retrieved 2026-08-17, tier: manufacturer)
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