# BQ24090DGQT

**Texas Instruments** · Battery Management · HVSSOP-10-EP-0.5mm

BQ24090DGQT from Texas Instruments, in a HVSSOP-10-EP-0.5mm. 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 | IN | input | Input power from the external DC supply (AC adapter or USB port), with an expected bypass capacitor of 1 µF to 10 µF connected from IN to VSS. |
| 2 | ISET | input | Programs the fast-charge current; an external resistor from ISET to VSS sets the value, with a range of 10.8 kΩ (50 mA) to 540 Ω (1000 mA). |
| 3 | VSS | power_in | Ground terminal; VSS must be connected to ground at all times. |
| 4 | PRE-TERM | input | Programs the current termination threshold (5% to 50% of IOUT set by ISET) and sets the precharge current to twice the termination current level, with an expected programming resistor range of 1 kΩ to 10 kΩ. |
| 5 | PG | output | Open-drain power-good output: low (FET on) indicates the input voltage is above UVLO and the OUT (battery) voltage. |
| 6 | NC | unconnected | Do not make a connection to this pin; it is for internal use and the signal must not be routed through it. |
| 7 | ISET2 | input | Programs the input/output current limit for the USB or adapter source: high = 500 mA max, low = ISET, float = 100 mA max. |
| 8 | CHG | output | Open-drain charge status output: low (FET on) indicates charging, and open drain (FET off) indicates no charging or charge complete. |
| 9 | TS | input | Battery-pack NTC temperature sense input (10 kΩ at 25°C for the BQ24090); floating or pulling high puts the part in TTDM charger mode and disables TS monitoring, timers and termination, and pulling it low disables the IC. |
| 10 | OUT | output | Battery connection to which the system load may be connected; the average load should not be excessive so the battery charges within the 10-hour safety timer window, with an expected bypass capacitor of 1 µF to 10 µF. |
| 11 | Thermal Pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HVSSOP-10-EP-0.5mm |
| Category | Power Management (PMIC) |
| Pins | 11 |

## CAD (KiCad official)

- Symbol: `BQ24090DGQT`
- Footprint: `Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm`
- 3D model: HVSSOP-10-EP-0.5mm (KiCad packages3D, STEP)
- 3D model files: `bq24090dgqt-etched.step` / `bq24090dgqt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq24090dgqt.step` / `bq24090dgqt.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/bq24091) (44 pp, sha256 `be833c849d71d54e`, retrieved 2026-10-10, 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-5-5` (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/bq24090dgqt-datasheet.pdf)