TPL5110QDDCRQ1 from Texas Instruments, in a TSOT-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	VDD	power_in	Supply voltage input. Recommended operating range 1.8 V to 5.5 V (absolute max 6.0 V). Typical supply current in operation is 35 nA.
2	GND	power_in	Device ground reference.
3	DELAY/M_DRV	bidirectional	Dual-function pin. An external resistor (Rext) between this pin and GND sets the timer interval (100 ms to 7200 s) via a one-time measurement at power-on. The pin also serves as a manual MOSFET Power-ON input: momentarily pulling it to VDD (VIH >= 1.5 V, valid pulse >= 20 ms) forces DRV to turn the external MOSFET on.
4	DONE	input	Logic input from the host uC used to signal successful processing (watchdog-like handshake). A low-to-high transition within the programmed interval causes the TPL5110-Q1 to end the DRV pulse and turn off the load MOSFET. Minimum pulse width 100 ns; VIH = 0.7VDD, VIL = 0.3VDD.
5	DRV	output	Power-gating output that drives the gate of an external load MOSFET every tIP. DRV = LOW turns the (P-channel) MOSFET ON. VOH >= VDD-0.3 V at 100 uA; VOL <= 0.3 V at -100 uA; rise/fall ~50 ns into 50 pF.
6	EN/ONE_SHOT	input	Mode-of-operation selector. Tie HIGH for periodic TIMER mode (DRV pulses every tIP). Tie LOW for ONE-SHOT mode (single DRV pulse at power-on; additional pulses can be triggered via DELAY/M_DRV). Must be hard-wired to VDD or GND.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	TSOT-23-6
Category	RTC
Pins	6

Ordering variants

Same part, different packaging or reel option.

TPL5110QDDCRQ1

CAD (KiCad official)

Symbol: TPL5110QDDCRQ1
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: TSOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tpl5110qddcrq1.step`	97 KB	You want the bare part, or you mark your own boards.
`tpl5110qddcrq1-etched.step`	2.4 MB	You want the part with `TPL5110QDDCRQ1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 588 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 (30 pp, sha256 24ed6cb4d0d750d4, 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