component
BQ25895RTWR
Public Made by Adomby adom
Texas Instruments Battery Management, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+62@@ -0,0 +1,62 @@+# BQ25895RTWR++**Texas Instruments** · Battery Management · QFN-24-EP(4x4)++BQ25895RTWR from Texas Instruments, in a QFN-24-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | VBUS | power_in | Charger input voltage supporting 3.9V to 14V with internal reverse-blocking MOSFET to PMID. |+| 2 | D+ | bidirectional | Positive USB data line for charging port detection including DCD, BC1.2, and MaxCharge handshake. |+| 3 | D- | bidirectional | Negative USB data line for charging port detection including DCD, BC1.2, and MaxCharge handshake. |+| 4 | STAT | output | Open-drain charge status output: LOW for charging in progress, HIGH for complete or disabled. |+| 5 | SCL | input | I2C serial clock input with 400 kHz fast mode support via 10kΩ pull-up resistor. |+| 6 | SDA | bidirectional | I2C serial data line with 400 kHz fast mode support via 10kΩ pull-up resistor. |+| 7 | INT | output | Open-drain interrupt output delivering 256µs active-low pulses on device status or fault events. |+| 8 | OTG | input | Boost mode enable input: activates 4.5V-5.5V output when high with OTG_CONFIG=1 and VBUS absent. |+| 9 | CE | input | Active-low charge enable input: enables battery charging when CHG_CONFIG=1 and CE pin is low. |+| 10 | ILIM | input | Analog input for input current limit via external resistor with 0.8V regulation point. |+| 11 | TS | input | Temperature qualification analog input for NTC thermistor (103AT-2 recommended) battery thermal management. |+| 12 | QON | input | BATFET enable/reset control with internal pull-up: exits ship mode on low pulse or resets system power. |+| 13 | BAT | power_in | Battery positive terminal connection with internal BATFET to SYS, requires 10µF ceramic capacitor. |+| 14 | BAT | power_in | Battery positive terminal connection (second pad) with internal BATFET, requires 10µF capacitor. |+| 15 | SYS | power_out | System power output regulated to 3.0V-3.7V minimum via BATFET, requires 20µF ceramic capacitor. |+| 16 | SYS | power_out | System power output (second pad) regulated to 3.0V-3.7V minimum via BATFET. |+| 17 | PGND | power_in | Power ground for high-current converter node: LSFET source connection with single-point tie to analog GND. |+| 18 | PGND | power_in | Power ground (second pad) for high-current converter with LSFET source connection. |+| 19 | SW | passive | Switching node connected to output inductor: internal HSFET/LSFET connection with 47nF bootstrap capacitor to BTST. |+| 20 | SW | passive | Switching node (second pad) connected to output inductor with internal HSFET/LSFET connection. |+| 21 | BTST | power_out | Bootstrap supply for PWM high-side gate driver: boost diode anode with 47nF capacitor to SW. |+| 22 | REGN | power_out | LDO regulator output 5V-6V supplying PWM gate drives and TS bias rail, requires 4.7µF/10V capacitor. |+| 23 | PMID | power_out | Boost mode output 4.5V-5.5V at up to 3.1A from RBFET/HSFET drains for OTG charging. |+| 24 | DSEL | output | Open-drain D+/D- multiplexer selection control: drives low during detection, high for MaxCharge, floats otherwise. |+| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | QFN-24-EP(4x4) |+| Category | Power Management (PMIC) |+| Pins | 25 |++## CAD (KiCad official)++- Symbol: `BQ25895RTWR`+- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm`+- 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)+- 3D model files: `bq25895rtwr-etched.step` / `bq25895rtwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bq25895rtwr.step` / `bq25895rtwr.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/bq25895) (65 pp, sha256 `9e00f1f30064dad8`, retrieved 2026-09-22, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/bq25895rtwr-datasheet.pdf)
page.jsonadded+246@@ -0,0 +1,246 @@+{+ "slug": "bq25895rtwr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Battery Management, QFN-24-EP(4x4). Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "bq25895rtwr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "bq25895rtwr.kicad_sym",+ "bq25895rtwr.kicad_mod",+ "bq25895rtwr.glb",+ "bq25895rtwr.step",+ "bq25895rtwr.lbr",+ "docs/hero.png",+ "docs/bq25895rtwr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "BQ25895RTWR",+ "manufacturer": "Texas Instruments",+ "package": "QFN-24-EP(4x4)",+ "pin_count": 25,+ "category": "Power Management (PMIC)",+ "subcategory": "Battery Management",+ "datasheet": "https://www.ti.com/cn/lit/gpn/bq25895",+ "parts": {+ "symbol": "bq25895rtwr.kicad_sym",+ "footprint": "bq25895rtwr.kicad_mod",+ "model_3d": "bq25895rtwr-etched.glb",+ "model_3d_plain": "bq25895rtwr.glb",+ "model_3d_step": "bq25895rtwr-etched.step",+ "model_3d_step_plain": "bq25895rtwr.step",+ "lbr": "bq25895rtwr.lbr"+ },+ "distributor_links": {+ "lcsc": "C80200"+ },+ "pins": [+ {+ "number": "1",+ "name": "VBUS",+ "type": "power_in",+ "description": "Charger input voltage supporting 3.9V to 14V with internal reverse-blocking MOSFET to PMID."+ },+ {+ "number": "2",+ "name": "D+",+ "type": "bidirectional",+ "description": "Positive USB data line for charging port detection including DCD, BC1.2, and MaxCharge handshake."+ },+ {+ "number": "3",+ "name": "D–",+ "type": "bidirectional",+ "description": "Negative USB data line for charging port detection including DCD, BC1.2, and MaxCharge handshake."+ },+ {+ "number": "4",+ "name": "STAT",+ "type": "output",+ "description": "Open-drain charge status output: LOW for charging in progress, HIGH for complete or disabled."+ },+ {+ "number": "5",+ "name": "SCL",+ "type": "input",+ "description": "I2C serial clock input with 400 kHz fast mode support via 10kΩ pull-up resistor."+ },+ {+ "number": "6",+ "name": "SDA",+ "type": "bidirectional",+ "description": "I2C serial data line with 400 kHz fast mode support via 10kΩ pull-up resistor."+ },+ {+ "number": "7",+ "name": "INT",+ "type": "output",+ "description": "Open-drain interrupt output delivering 256µs active-low pulses on device status or fault events."+ },+ {+ "number": "8",+ "name": "OTG",+ "type": "input",+ "description": "Boost mode enable input: activates 4.5V-5.5V output when high with OTG_CONFIG=1 and VBUS absent."+ },+ {+ "number": "9",+ "name": "CE",+ "type": "input",+ "description": "Active-low charge enable input: enables battery charging when CHG_CONFIG=1 and CE pin is low."+ },+ {+ "number": "10",+ "name": "ILIM",+ "type": "input",+ "description": "Analog input for input current limit via external resistor with 0.8V regulation point."+ },+ {+ "number": "11",+ "name": "TS",+ "type": "input",+ "description": "Temperature qualification analog input for NTC thermistor (103AT-2 recommended) battery thermal management."+ },+ {+ "number": "12",+ "name": "QON",+ "type": "input",+ "description": "BATFET enable/reset control with internal pull-up: exits ship mode on low pulse or resets system power."+ },+ {+ "number": "13",+ "name": "BAT",+ "type": "power_in",+ "description": "Battery positive terminal connection with internal BATFET to SYS, requires 10µF ceramic capacitor."+ },+ {+ "number": "14",+ "name": "BAT",+ "type": "power_in",+ "description": "Battery positive terminal connection (second pad) with internal BATFET, requires 10µF capacitor."+ },+ {+ "number": "15",+ "name": "SYS",+ "type": "power_out",+ "description": "System power output regulated to 3.0V-3.7V minimum via BATFET, requires 20µF ceramic capacitor."+ },+ {+ "number": "16",+ "name": "SYS",+ "type": "power_out",+ "description": "System power output (second pad) regulated to 3.0V-3.7V minimum via BATFET."+ },+ {+ "number": "17",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground for high-current converter node: LSFET source connection with single-point tie to analog GND."+ },+ {+ "number": "18",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground (second pad) for high-current converter with LSFET source connection."+ },+ {+ "number": "19",+ "name": "SW",+ "type": "passive",+ "description": "Switching node connected to output inductor: internal HSFET/LSFET connection with 47nF bootstrap capacitor to BTST."+ },+ {+ "number": "20",+ "name": "SW",+ "type": "passive",+ "description": "Switching node (second pad) connected to output inductor with internal HSFET/LSFET connection."+ },+ {+ "number": "21",+ "name": "BTST",+ "type": "power_out",+ "description": "Bootstrap supply for PWM high-side gate driver: boost diode anode with 47nF capacitor to SW."+ },+ {+ "number": "22",+ "name": "REGN",+ "type": "power_out",+ "description": "LDO regulator output 5V-6V supplying PWM gate drives and TS bias rail, requires 4.7µF/10V capacitor."+ },+ {+ "number": "23",+ "name": "PMID",+ "type": "power_out",+ "description": "Boost mode output 4.5V-5.5V at up to 3.1A from RBFET/HSFET drains for OTG charging."+ },+ {+ "number": "24",+ "name": "DSEL",+ "type": "output",+ "description": "Open-drain D+/D- multiplexer selection control: drives low during detection, high for MaxCharge, floats otherwise."+ },+ {+ "number": "25",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "exposed pad 25 added from the footprint",+ "dropped thermal pad ['EP'] absent from footprint"+ ],+ "pages_sent": 65,+ "cost_usd": 0.7469,+ "at": "2026-09-22T22:42:53"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/bq25895",+ "pages": 65,+ "sha256": "9e00f1f30064dad8",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 25,+ "described": 25,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}