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BQ7721611PWR

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by adom

Texas Instruments Battery Management, TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BQ7721611PWR

Texas Instruments · Battery Management · TSSOP-24

BQ7721611PWR from Texas Instruments, in a TSSOP-24. 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 NC unconnected Not electrically connected and can be left floating.
2 VDD power_in Power supply.
3 V16 input Sense input for positive voltage of the sixteenth cell from the bottom of the stack.
4 V15 input Sense input for positive voltage of the fifteenth cell from the bottom of the stack.
5 V14 input Sense input for positive voltage of the fourteenth cell from the bottom of the stack.
6 V13 input Sense input for positive voltage of the thirteenth cell from the bottom of the stack.
7 V12 input Sense input for positive voltage of the twelfth cell from the bottom of the stack.
8 V11 input Sense input for positive voltage of the eleventh cell from the bottom of the stack.
9 V10 input Sense input for positive voltage of the tenth cell from the bottom of the stack.
10 V9 input Sense input for positive voltage of the ninth cell from the bottom of the stack.
11 V8 input Sense input for positive voltage of the eighth cell from the bottom of the stack.
12 V7 input Sense input for positive voltage of the seventh cell from the bottom of the stack.
13 V6 input Sense input for positive voltage of the sixth cell from the bottom of the stack.
14 V5 input Sense input for positive voltage of the fifth cell from the bottom of the stack.
15 NC unconnected Not electrically connected and can be left floating.
16 NC unconnected Not electrically connected and can be left floating.
17 V4 input Sense input for positive voltage of the fourth cell from the bottom of the stack.
18 V3 input Sense input for positive voltage of the third cell from the bottom of the stack.
19 V2 input Sense input for positive voltage of the second cell from the bottom of the stack.
20 V1 input Sense input for positive voltage of the lowest cell in the stack.
21 VSS power_in Electrically connected to IC ground and negative terminal of the lowest cell in the stack.
22 COUT output Output drive for overvoltage, open wire, and overtemperature; can be left floating if not used.
23 DOUT output Output drive for undervoltage, open wire, and overtemperature; can be left floating if not used.
24 TS input Temperature sensor input; if not used, leave it unconnected.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-24
Category Power Management (PMIC)
Pins 24

CAD (KiCad official)

  • Symbol: BQ7721611PWR
  • Footprint: Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm
  • 3D model: TSSOP-24 (KiCad packages3D, STEP)
  • 3D model files: bq7721611pwr-etched.step / bq7721611pwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bq7721611pwr.step / bq7721611pwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (26 pp, sha256 79959522e04d372f, retrieved 2026-10-03, tier: lcsc)
  • 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