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TPS3840DL28DBVR
Public Unreviewedby Ray
Texas Instruments Supervisor and Reset ICs, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTPS3840DL28DBVR
Texas Instruments · Supervisor and Reset ICs · SOT-23-5
TPS3840DL28DBVR from Texas Instruments, in a SOT-23-5. 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 | RESET | output | Active-low, open-drain reset output (DL variant). Asserted low when MR is pulled low or VDD falls below the negative threshold V_IT- (2.8 V). Held low for the programmed delay t_D after MR is released and VDD rises above V_IT+. Requires an external pull-up resistor to VDD (open-drain). |
| 2 | VDD | power_in | Input supply voltage and monitored voltage rail. Recommended operating range 1.5 V to 10 V, absolute maximum 12 V. TPS3840 monitors VDD against V_IT- = 2.8 V (typ) with 100 mV hysteresis. |
| 3 | GND | power_in | Device ground reference. |
| 4 | MR | input | Active-low manual reset input. Pull to V_MR_L (logic low) to force RESET asserted. After MR is released or driven to V_MR_H, RESET returns to its nominal state after t_D. May be left floating when not in use (internal glitch-immune filtering). Absolute maximum 12 V; if driven below VDD, current flows into VDD out of MR. |
| 5 | CT | passive | Capacitor time-delay pin. Connect an external capacitor from CT to GND to program the reset delay t_D (from ~50 us floating up to 6.2 s at 10 uF). Leave floating for the smallest fixed delay (~220 us typ, 350 us max). Absolute maximum 5.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
TPS3840DL28DBVRTPS3840DL28DBVRDBVT
CAD (KiCad official)
- Symbol:
TPS3840DL28DBVR - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (44 pp, sha256
316a9ac426e4c68e, 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).