component
BQ2057WSNTR
Public Made by Adomby adom
Texas Instruments Battery Management ICs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownBQ2057WSNTR
Texas Instruments · Battery Management ICs · SOIC-8
BQ2057WSNTR from Texas Instruments, in a SOIC-8. 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 | SNS | input | Current sense input that senses battery current via the voltage across an external sense resistor, which can be on the high or low side of the battery. |
| 2 | BAT | input | Voltage sense input tied directly to the positive side of the battery. |
| 3 | VCC | power_in | Supply voltage input (4.5 V to 15 V recommended, -0.3 to +18 V absolute max) and current reference for high-side sensing configuration. |
| 4 | TS | input | Temperature sense input for an external battery-temperature monitoring circuit; connecting it to VCC/2 disables this feature. |
| 5 | STAT | output | 3-state charge status output indicating charge in progress, charge complete, and temperature fault or sleep mode (sink 20 mA max, source 10 mA max). |
| 6 | VSS | power_in | Ground. |
| 7 | CC | output | Charge control source-follower output that drives an external PNP or P-channel MOSFET pass transistor for current and voltage regulation (40 mA max output current). |
| 8 | COMP | input | Charge-rate compensation (AutoComp) input that sets the compensation level; connect to VCC for high-side sensing or VSS for low-side sensing to disable it, and do not leave it floating. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management ICs |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -0.3 | 18 | V | VCC with respect to GND | 5 | |
| Input voltage SNS, BAT, TS, COMP | -0.3 | V | with respect to GND; max printed as VCC+0.3 V | 5 | |||
| STAT pin sink current | 20 | mA | not to exceed PD | 5 | |||
| STAT pin source current | 10 | mA | not to exceed PD | 5 | |||
| CC pin output current | 40 | mA | not to exceed PD | 5 | |||
| Total power dissipation | PD | 300 | mW | at 25°C | 5 | ||
| Operating free-air temperature range | TA | -20 | 70 | °C | 5 | ||
| Storage temperature range | Tstg | -40 | 125 | °C | 5 | ||
| Lead temperature | 300 | °C | soldering, 10 s | 5 | |||
| Supply voltage | VCC | 4.5 | 15 | V | 5 | ||
| Operating free-air temperature range | TA | -20 | 70 | °C | 5 | ||
| VCC current | I(VCC) | 2 | 4 | mA | VCC > VCC(min), Excluding external loads | 5 | |
| VCC sleep current (bq2057T and bq2057W) | I(VCCS) | 10 | µA | V(BAT) ≥ V(min), V(BAT), VCC ≥ 0.8 V | 5 | ||
| Input bias current on BAT pin | IIB(BAT) | 1 | µA | V(BAT) = V(REG) | 5 | ||
| Input bias current on SNS pin | IIB(SNS) | 5 | µA | V(SNS)= 5 V | 5 | ||
| Input bias current on TS pin | IIB(TS) | 5 | µA | V(TS) = 5 V | 5 | ||
| Input bias current on COMP pin | IIB(COMP) | 5 | µA | V(COMP) = 5 V | 5 | ||
| Output voltage (bq2057W) | VO(REG) | 8.317 | 8.4 | 8.484 | V | bq2057W, See Notes 1, 2, 3 | 5 |
| Current regulation threshold, high-side sensing (bq2057T and bq2057W) | V(SNS) | 113.6 | 125 | 137.5 | mV | High-side current sensing configuration | 6 |
| Current regulation threshold, low-side sensing (bq2057T and bq2057W) | V(SNS) | 118.1 | 130 | 143 | mV | Low-side current sensing configuration | 6 |
| Charge termination current detect threshold | I(TERM) | -24 | -14 | -4 | mV | Voltage at pin SNS, relative to VCC for high-side sensing, and to Vss for low-side sensing, 0°C ≤ TA ≤ 50°C | 6 |
| Lower temperature threshold | V(TS1) | 29.1 | 30 | 30.9 | %VCC | TS pin voltage | 6 |
| Upper temperature threshold | V(TS2) | 58.3 | 60 | 61.8 | %VCC | TS pin voltage | 6 |
| Precharge threshold (bq2057W) | V(min) | 6.18 | 6.3 | 6.43 | V | bq2057W | 6 |
| Precharge current regulation | I(PRECHG) | 13 | mV | Voltage at pin SNS, relative to VCC for high-side sensing, and to VSS for low-side sensing, 0°C ≤ TA ≤ 50°C | 6 | ||
| Precharge current regulation, high-side sensing | I(PRECHG) | 3 | 13 | 22 | mV | Voltage at pin SNS, relative to VCC for high-side sensing, 0°C ≤ TA ≤ 50°C, VCC = 5 V | 6 |
| Recharge threshold (bq2057T and bq2057W), offset from VO(REG) | V(RCH) | -204 | -200 | -196 | mV | bq2057T and bq2057W; printed as VO(REG)−196/200/204 mV | 6 |
| AutoComp gain | G(COMP) | 1.87 | 2.2 | 2.53 | V/V | V(BAT)+0.3 V ≤ VCC≤ VCC(max), bq2057, bq2057C, bq2057T, bq2057W | 6 |
| AutoComp gain, low-side sensing | G(COMP) | 2.09 | 2.4 | 2.76 | V/V | V(BAT)+0.3 V ≤ VCC ≤ VCC(max), bq2057T and bq2057W in low-side sensing configuration | 6 |
| STAT output low voltage | VOL(STAT) | 0.7 | V | IOL = 10 mA | 6 | ||
| CC output low voltage | VOL(CC) | 1.5 | V | IO(CC) = 5 mA (sink) | 6 | ||
| CC sink current | IO(CC) | 5 | 40 | mA | Not to exceed power rating specification (PD) | 6 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | TS: 8−Pin TSSOP 8−Pin SOIC Narrow (SN) | 20 |
CAD (KiCad official)
- Symbol:
BQ2057WSNTR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
bq2057wsntr-etched.step/bq2057wsntr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bq2057wsntr.step/bq2057wsntr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (33 pp, sha256
bb27fef0324cafba, retrieved 2026-10-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).