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BQ25895RTWR

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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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Contents

README

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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 (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