# TPS3899DL08DSER

**Texas Instruments** · Supervisor And Reset ICs · WSON-6(1.5x1.5)

TPS3899DL08DSER from Texas Instruments, in a WSON-6(1.5x1.5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | CTR | passive | User-adjustable reset delay capacitor pin; connecting to ground-referenced capacitor (range 0-10µF) sets the RESET delay time to deassert. |
| 2 | CTS | passive | User-adjustable sense delay capacitor pin; connecting to ground-referenced capacitor (range 0-10µF) sets the RESET delay time to assert. |
| 3 | GND | power_in | Ground. |
| 4 | VDD | power_in | Supply voltage pin (0.85V to 6V for DL variant) with recommended 0.1µF ceramic capacitor placement. |
| 5 | SENSE | input | Input pin for monitored voltage that asserts RESET when voltage drops below negative threshold VIT− and releases when voltage rises above VIT− + VHYS; supports optional 10nF-100nF ceramic capacitor. |
| 6 | RESET | output | Open-drain active-low output that asserts to logic low when monitored voltage drops below threshold VIT− after CTS delay and remains low until SENSE rises above VIT− + VHYS and CTR delay expires. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-6(1.5x1.5) |
| Category | Power Management (PMIC) |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `TPS3899DL08DSER`
- Footprint: `Package_SON:WSON-6_1.5x1.5mm_P0.5mm`
- 3D model: WSON-6(1.5x1.5) (KiCad packages3D, STEP)
- 3D model files: `tps3899dl08dser-etched.step` / `tps3899dl08dser-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps3899dl08dser.step` / `tps3899dl08dser.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tps3899) (36 pp, sha256 `d206381355830c12`, retrieved 2026-10-03, 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:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tps3899dl08dser-datasheet.pdf)