TPS3700DDCR 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	OUTA	output	Open-drain output A. Asserts (pulls low) when SENSEA drops below the internal 400 mV reference (undervoltage detection). Requires an external pull-up resistor to the desired logic rail.
2	GND	power_in	Device ground reference. Connect to system ground.
3	NC	unconnected	No internal connection. May be left floating or tied to GND.
4	SENSEB	input	Overvoltage sense input B. Compared against the internal 400 mV reference; OUTB asserts when SENSEB exceeds the reference. Drive from a resistor divider off the monitored rail. Input bias current is ~10 nA typical.
5	SENSEA	input	Undervoltage sense input A. Compared against the internal 400 mV reference; OUTA asserts when SENSEA falls below the reference. Drive from a resistor divider off the monitored rail. Input bias current is ~10 nA typical.
6	NC	unconnected	No internal connection. May be left floating or tied to GND.
7	VDD	power_in	Supply input. Operating range 1.6 V to 18 V. Bypass with a 0.1 uF ceramic capacitor to GND close to the pin.
8	OUTB	output	Open-drain output B. Asserts (pulls low) when SENSEB rises above the internal 400 mV reference (overvoltage detection). Requires an external pull-up resistor to the desired logic rail.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-23-6
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

TPS3700DDCR
TPS3700DDCRDDCT

CAD (KiCad official)

Symbol: TPS3700DDCR
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tps3700ddcr.step`	97 KB	You want the bare part, or you mark your own boards.
`tps3700ddcr-etched.step`	2.2 MB	You want the part with `TPS3700DDCR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 540 faces against 117 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: Texas Instruments datasheet (23 pp, sha256 6daae6680a8ab6e8, 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