BQ34Z100PWR-R2 Review

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BQ34Z100PWR-R2 Part Verification

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Date: 2026-07-23 Reviewed available part metadata, symbol terminals, PCB footprint, and pin descriptions for the Flux part project BQ34Z100P...

flux

Completed the BQ34Z100PWR-R2 part review and recorded the detailed findings in BQ34Z100PWR-R2 Part Verification.
Open items:
  • Datasheet URL is populated, but it points to an Arrow page rather than the official TI datasheet.
  • Part classification says Logic / AND, which mismatches a battery fuel gauge.
  • Pin names/numbers match the datasheet, but pin types and descriptions are missing/unspecified.
  • Footprint is broadly TSSOP/PW-compatible, with small deviations from TI’s example land pattern.
Suggested next steps:
  1. Update the part metadata to the official TI datasheet URL.
  2. Correct the IC classification to battery-management / fuel-gauge.
  3. Populate datasheet-backed pin types and pin descriptions.
  4. Optionally tune the footprint to exactly match TI’s PW0014A example land pattern.
Fix metadata issues
Update datasheet URL
Correct part classification
Populate pin metadata
Tune footprint geometry
SRP
Pin Number
9
BAT
Pin Number
4
P6/TS
Pin Number
11
P3/SDA
Pin Number
14
VEN
Pin Number
2
SRN
Pin Number
10
CE
Pin Number
5
REGIN
Pin Number
6
P4/SCL
Pin Number
13
P5/HDQ
Pin Number
12
REG25
Pin Number
7
P2
Pin Number
1
P1
Pin Number
3
VSS
Pin Number
8

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BQ34Z100PWR-R2 Part Verification
Date: 2026-07-23
Scope
Reviewed available part metadata, symbol terminals, PCB footprint, and pin descriptions for the Flux part project BQ34Z100PWR-R2 against the official Texas Instruments datasheet.
Official datasheet used:
Available Part Metadata in Flux

Table

FieldCurrent value observed
Project / part nameBQ34Z100PWR-R2
DescriptionBattery Management Multi-chemistry Impedance Track stand-alone fuel gauge
Manufacturer Part NumberBQ34Z100PWR-R2
ManufacturerTexas Instruments
Terminal / pin count14
Part TypeIntegrated Circuits
Part sub-typeLogic
Type-specific valuesicType = Logic, logicFunction = AND
Datasheet URLhttps://www.arrow.com/en/products/bq34z100pwr-r2/texas-instruments?region=nac
Designator PrefixIC
Current footprint assetSOP65P640X120-14N.kicad_mod
3D model assetBQ34Z100PWR-R2.stp
Datasheet Identity and Key Specs
Source: Texas Instruments, BQ34Z100-R2 Wide Range Fuel Gauge with Impedance Track™ Technology.

Table

SpecDatasheet value
FunctionWide-range, stand-alone fuel gauge with Impedance Track™ technology
Supported chemistriesLi-ion, LiFePO₄, PbA, NiMH, NiCd
Supported battery voltage3 V to 16.7 kV with external voltage translation
InterfacesI²C target, HDQ target, direct LED outputs, ALERT/output functionality
AuthenticationSHA-1 / HMAC
Capacity rangeUp to 7000 Ah with standard configuration options
Current rangeUp to 8160 A with standard configuration options
Recommended VREGIN2.7 V to 4.5 V unrestricted; 2.45 V to 2.7 V without flash writes
BAT input rangeVSS - 0.125 V to 5 V recommended
SRP/SRN rangeVSS - 0.125 V to 0.125 V recommended; ±0.125 V differential coulomb-counter range
REG25 output2.5 V nominal internal LDO output
Typical currentNORMAL <145 µA, SLEEP <84 µA, FULLSLEEP <30 µA
Operating temperature-40°C to 85°C
PackageTSSOP (PW), 14 pins
TI package drawingPW0014A
Body size nominal5.00 mm × 4.40 mm
MSL / peak reflowLevel-2, 260°C, 1 year
Part marking34Z100
Datasheet Pin Table vs Flux Symbol

Table

Pin #Datasheet nameDatasheet typeDatasheet description summaryFlux terminal present?Flux pin type / description status
1P2OLED 2 or not used; connect to VSS if unusedYes: P2Pin Number correct; Pin Type is Unspecified; no Pin Description observed
2VENOActive-high voltage translation enable; may float or tie to VSS if unusedYes: VENPin Number correct; Pin Type is Unspecified; no Pin Description observed
3P1OLED 1 / single-LED driver function; connect to VSS if unusedYes: P1Pin Number correct; Pin Type is Unspecified; no Pin Description observed
4BATITranslated battery-voltage inputYes: BATPin Number correct; Pin Type is Unspecified; no Pin Description observed
5CEIChip enable; internal LDO disconnected from REGIN when lowYes: CEPin Number correct; Pin Type is Unspecified; no Pin Description observed
6REGINPInternal LDO input; 0.1 µF ceramic to VSSYes: REGINPin Number correct; Pin Type is Unspecified; no Pin Description observed
7REG25P2.5 V LDO output; 1 µF ceramic to VSSYes: REG25Pin Number correct; Pin Type is Unspecified; no Pin Description observed
8VSSPDevice groundYes: VSSPin Number correct; Pin Type is Unspecified; no Pin Description observed
9SRPICoulomb-counter analog sense input, near BAT-Yes: SRPPin Number correct; Pin Type is Unspecified; no Pin Description observed
10SRNICoulomb-counter analog sense input, near PACK-Yes: SRNPin Number correct; Pin Type is Unspecified; no Pin Description observed
11P6/TSIPack thermistor voltage sense; 103AT-type thermistorYes: P6/TSPin Number correct; Pin Type is Unspecified; no Pin Description observed
12P5/HDQI/OOpen-drain HDQ target line; may float or tie VSS if unusedYes: P5/HDQPin Number correct; Pin Type is Unspecified; no Pin Description observed
13P4/SCLII²C SCL target input, typical 10 kΩ pullup; LED 4 in four-LED modeYes: P4/SCLPin Number correct; Pin Type is Unspecified; no Pin Description observed
14P3/SDAI/OOpen-drain I²C SDA target data, typical 10 kΩ pullup; LED 3 in four-LED modeYes: P3/SDAPin Number correct; Pin Type is Unspecified; no Pin Description observed
Symbol result
  • Pin count matches the datasheet: 14 / 14.
  • Pin names and pin numbers match the TI datasheet.
  • The schematic symbol uses left-side pins 1–7 and right-side pins 8–14, matching the datasheet pinout order convention for the 14-pin TSSOP view.
  • Main symbol metadata is incomplete: all observed terminal Pin Type properties are Unspecified, and no terminal Pin Description properties were observed.
Footprint vs Datasheet
Datasheet package / land-pattern values

Table

FeatureTI datasheet value
PackagePW0014A TSSOP, 14 pins, 1.2 mm max height
Lead pitch0.65 mm
Body size4.9–5.1 mm length × 4.3–4.5 mm width
Overall width6.2–6.6 mm
Lead width0.17–0.30 mm
Lead foot length0.50–0.75 mm
Example land pad count14
Example land pad size1.5 mm × 0.45 mm
Example land pitch0.65 mm
Example land row center/span reference5.8 mm
Flux footprint observed
From SOP65P640X120-14N.kicad_mod:

Table

FeatureFlux footprint value
Pad count14
Pad pitch0.65 mm
Pad size0.45 mm × 1.475 mm
Pad row centers±2.938 mm, center-to-center span 5.876 mm
Fab body outline4.4 mm × 5.0 mm
Courtyard7.85 mm × 5.6 mm
Pin-1 indicationFab chamfer plus silkscreen marker near pad 1
3D modelPresent: BQ34Z100PWR-R2.stp
Footprint result
  • The footprint is compatible with the package family and pin count: 14-pin 0.65 mm-pitch TSSOP/PW.
  • Body outline matches the nominal TI body size: 5.0 mm × 4.4 mm.
  • Pad pitch matches: 0.65 mm.
  • Pad width matches TI example: 0.45 mm.
  • Pad length is slightly short versus TI example: 1.475 mm observed vs 1.5 mm datasheet example. Difference is 0.025 mm and is likely a library/rounding variation, but it is not an exact match to the datasheet example land pattern.
  • Pad row center span is slightly wider than the TI example reference: 5.876 mm observed vs 5.8 mm datasheet example. Difference is 0.076 mm. This is small but should be checked against the chosen PCB assembly house land-pattern preference if exact TI example geometry is required.
  • The footprint file name begins with SOP rather than TSSOP/PW, but the encoded geometry (65P640X120-14N) is consistent with a 0.65 mm-pitch, ~6.4 mm overall-width, 1.2 mm-height 14-pin TSSOP/PW package.
Mismatches and Issues Flagged

Table

SeverityAreaFindingRecommendation
HighMetadataCurrent Datasheet URL points to an Arrow product page, not the official TI datasheet PDF/GPN page.Replace with official TI URL: https://www.ti.com/lit/ds/symlink/bq34z100-r2.pdf or https://www.ti.com/lit/gpn/bq34z100-r2.
HighMetadataPart sub-type / type-specific values classify the IC as Logic and logicFunction = AND, which does not match a battery fuel gauge / battery monitor.Change classification to a battery-management / fuel-gauge / power-management IC classification where available.
MediumSymbol pin metadataAll observed terminal Pin Type values are Unspecified, despite datasheet types O, I, I/O, and P.Populate pin types from the datasheet table. Suggested: P2/P1/VEN = Output; BAT/CE/SRP/SRN/P6/TS/P4/SCL = Input; P5/HDQ/P3/SDA = Bi-Directional/Open Drain where supported; REGIN = Power In; REG25 = Power Out; VSS = Ground.
MediumSymbol pin descriptionsNo terminal Pin Description properties were observed.Add datasheet-backed pin descriptions for clarity and ERC review quality.
LowFootprint namingFootprint asset name uses SOP... rather than a direct TSSOP/PW0014A naming convention.Rename or annotate package as TSSOP/PW0014A to avoid package ambiguity.
LowFootprint geometryPad length and row-span are close but not exact to TI example land pattern.Accept if IPC/library standard is intended; otherwise revise to TI example 1.5 mm × 0.45 mm pads and 5.8 mm row-span reference.
Overall Assessment
The critical electrical pin mapping is correct: the Flux symbol has the correct 14 pin names and pin numbers for the TI BQ34Z100-R2/BQ34Z100PWR-R2 datasheet. The footprint is broadly correct for the 14-pin PW/TSSOP package and should be manufacturable, but it is not an exact copy of TI's example land pattern. The main issues are metadata quality: datasheet link, part classification, pin types, and pin descriptions should be corrected before publishing or using this as a trusted library part.

  • Scope

  • Available Part Metadata in Flux

  • Datasheet Identity and Key Specs

  • Datasheet Pin Table vs Flux Symbol

  • Symbol result

  • Footprint vs Datasheet

  • Datasheet package / land-pattern values

  • Flux footprint observed

  • Footprint result

  • Mismatches and Issues Flagged

  • Overall Assessment

Documents

Assets

BQ34Z100-R2-thumb.png

BQ34Z100-R2-thumb.png

BQ34Z100-R2-thumbThumbnail
BQ34Z100PWR-R2

BQ34Z100PWR-R2

BQ34Z100PWR-R2 Symbol.svgDefault
kicad_mod

BQ34Z100PWR-R2

SOP65P640X120-14N.kicad_modFootprint
stp

BQ34Z100PWR-R2

BQ34Z100PWR-R2.stp3D Model

BQ34Z100-R2

BQ34Z100-R2 thumbnail
Multichemistry Impedance Track™ stand-alone fuel gauge
Battery Fuel Gauge IC for accurate state-of-charge, state-of-health, and runtime prediction of rechargeable battery packs using Texas Instruments' Impedance Track™ algorithm. It supports 1- to 16-series Li-Ion/Li-Polymer, as well as NiMH and lead-acid batteries, communicates via an I²C interface, measures pack voltage up to 65 V, and integrates coulomb counting, temperature sensing, and programmable battery management functions.
#BatteryFuelGauge #FuelGaugeIC #BatteryManagement #ImpedanceTrack #CoulombCounter #I2C #LiIon #LiPolymer #NiMH #LeadAcid #TexasInstruments #BQ34Z100R2

Properties

BQ34Z100-R2

Texas Instruments

Integrated Circuits

ti.com/lit/ds/symlink/bq34z100-r2.pdf

IC

parametric-v1

creativecommons.org/licenses/by/4.0/

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