# BQ20Z70PWR-V160

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

BQ20Z70PWR-V160 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 | XALERT | input | Alert interrupt input from the bq29330; connect directly to the bq29330 XALERT pin. |
| 2 | TS2 | input | Second thermistor voltage input for battery temperature monitoring; input range is -0.2 V to 0.8 x VCC. |
| 3 | TS1 | input | First thermistor voltage input for battery temperature monitoring; input range is -0.2 V to 0.8 x VCC. |
| 4 | CLKOUT | output | 32.768 kHz output for the bq29330 watchdog; connect directly to the bq29330 WDI pin, with VOL up to 0.4 V at IOL = 7 mA and VOH of at least VCC - 0.5 V at IOH = -0.5 mA. |
| 5 | PRES | input | Active-low input that senses system insertion; VIL maximum is 0.8 V and VIH minimum is 2.0 V. |
| 6 | PFIN | input | Active-low input that senses the secondary protector output status; VIL maximum is 0.8 V and VIH minimum is 2.0 V. |
| 7 | SAFE | output | Active-high output that enforces an additional level of safety, such as blowing a fuse; VOL maximum is 0.4 V at IOL = 7 mA. |
| 8 | SMBD | bidirectional | SMBus data open-drain bidirectional pin for communication with the bq20z70; absolute maximum voltage is 6.0 V relative to VSS. |
| 9 | NC | unconnected | Not used; leave floating. |
| 10 | SMBC | bidirectional | SMBus clock open-drain bidirectional pin for communication with the bq20z70; absolute maximum voltage is 6.0 V relative to VSS. |
| 11 | SDATA | bidirectional | Data transfer line to and from the bq29330; connect directly to the bq29330 SDATA pin, with absolute maximum of 6.0 V relative to VSS. |
| 12 | SCLK | bidirectional | Data clock line to the bq29330; connect directly to the bq29330 SCLK pin, with absolute maximum of 6.0 V relative to VSS. |
| 13 | VSS | power_in | Negative supply; both VSS pins must be connected together. |
| 14 | SRP | input | Analog input for a small-value sense resistor to monitor battery charge and discharge current; input voltage range is -0.2 V to 0.2 V. |
| 15 | SRN | input | Analog input for a small-value sense resistor to monitor battery charge and discharge current; input voltage range is -0.2 V to 0.2 V. |
| 16 | MRST | input | Master reset input that forces the device into reset when held low; connect directly to the bq29330 XRST pin. |
| 17 | VSS | power_in | Negative supply; both VSS pins must be connected together. |
| 18 | VCC | power_in | Positive supply; recommended operating supply is 2.4 V to 2.6 V (2.5 V typical), and absolute maximum VCC relative to VSS is -0.3 V to 2.75 V. |
| 19 | VCELL+ | input | Positive differential cell input; connect directly to the bq29330 CELL+ pin. |
| 20 | VCELL- | input | Negative differential cell input; connect directly to the bq29330 CELL- pin. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `BQ20Z70PWR-V160`
- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`
- 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files: `bq20z70pwr-v160-etched.step` / `bq20z70pwr-v160-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq20z70pwr-v160.step` / `bq20z70pwr-v160.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/bq20z70-v160) (19 pp, sha256 `407f35941e85ca11`, retrieved 2026-10-11, tier: lcsc)
- **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/bq20z70pwr-v160-datasheet.pdf)