# BQ7790511PWR

**Texas Instruments** · Battery Management · TSSOP-20

BQ7790511PWR from Texas Instruments, in a TSSOP-20. 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 | VDD | power_in | Supply voltage, recommended operating range 3-25V. |
| 2 | AVDD | power_out | Analog supply output for capacitive decoupling, maximum voltage 3V. |
| 3 | VC5 | input | Cell 5 voltage sense input with measurement range 0-5V. |
| 4 | VC4 | input | Cell 4 voltage sense input with measurement range 0-5V. |
| 5 | VC3 | input | Cell 3 voltage sense input with measurement range 0-5V. |
| 6 | VC2 | input | Cell 2 voltage sense input with measurement range 0-5V. |
| 7 | VC1 | input | Cell 1 voltage sense input with measurement range 0-5V. |
| 8 | AVSS | power_in | Analog ground reference for the device. |
| 9 | SRP | input | Current sense input connected to battery side of sense resistor, measurement range -0.2 to 0.8V. |
| 10 | SRN | input | Current sense input connected to PACK- side of sense resistor, measurement range -0.2 to 0.8V. |
| 11 | DSG | output | Discharge FET driver output with maximum output voltage 16V. |
| 12 | CHGU | output | Charge FET signal output for upper device in cascaded stack configuration, maximum voltage 16V. |
| 13 | CHG | output | Charge FET driver output for single device or bottom of stack configuration, maximum voltage 16V. |
| 14 | LD | input | PACK- load removal detection input with measurement range 0-16V. |
| 15 | TS | input | Thermistor measurement input for external temperature sensor, measurement range 0 to VTB. |
| 16 | VTB | output | Thermistor bias output voltage for external NTC thermistor, maximum voltage 3V. |
| 17 | CCFG | input | Cell in series configuration input with measurement range 0 to AVDD. |
| 18 | CTRC | input | CHG and DSG override control input, voltage range 0 to (VDD+5)V. |
| 19 | CTRD | input | CHG and DSG override control input, voltage range 0 to (VDD+5)V. |
| 20 | DVSS | power_in | Digital ground reference for the device. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-20 |
| Category | Power Management (PMIC) |
| Pins | 20 |

## CAD (KiCad official)

- Symbol: `BQ7790511PWR`
- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`
- 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files: `bq7790511pwr-etched.step` / `bq7790511pwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq7790511pwr.step` / `bq7790511pwr.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/bq77905) (48 pp, sha256 `f04162b24e7e7c22`, retrieved 2026-10-05, 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/bq7790511pwr-datasheet.pdf)