Produktdetails

Number of series cells 1 Charge current (max) (A) 0.5 Vin (max) (V) 5.5 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.6 Battery charge voltage (max) (V) 4.6 Absolute max Vin (max) (V) 20 Control topology Linear Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Integrated ADC, Integrated LDO, Power Path Vin (min) (V) 3.4 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 0.5 Vin (max) (V) 5.5 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.6 Battery charge voltage (max) (V) 4.6 Absolute max Vin (max) (V) 20 Control topology Linear Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Integrated ADC, Integrated LDO, Power Path Vin (min) (V) 3.4 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFP) 20 3.96 mm² 1.8 x 2.2
  • Linear battery charger with 1.25-mA to 500-mA fast charge current range
    • 0.5% Accurate I 2C programmable battery regulation voltage ranging from 3.6 V to 4.6 V in 10-mV steps
    • Configurable termination current supporting down to 0.5 mA
    • 20-V Tolerant input with typical 3.4-V to 5.5-V input voltage operating range
    • Programmable thermal charging profile, fully configurable hot, warm, cool and cold thresholds
  • Power Path management for powering system and charging battery
    • I 2C Programmable regulated system voltage (PMID) ranging from 4.4V to 4.9V in addition to battery voltage tracking and Input pass-though options
    • Dynamic power path management optimizes charging from weak adapters
    • Advanced I 2C control allows host to disconnect the battery or adapter as needed
  • I 2C Configurable load switch or up to 150-mA LDO output
    • Programmable range from 0.6 V to 3.7 V in 100-mV steps
  • Ultra low Iddq for extended battery life
    • 10-nA Ship mode battery Iq
    • 400-nA Iq While powering the system (PMID and VDD on)
  • One push-button wake-up and reset input with adjustable timers
    • Supports system power cycle and HW reset
  • 16-Bit ADC
    • Monitoring of charge current, battery thermistor and battery, input and system (PMID) voltages
    • General purpose ADC input
  • Always on 1.8-V VDD LDO supporting loads up to 10 mA
  • Safety-Related Certifications
    • TUV IEC 62368 Certification
  • 20-Pin 2-mm x 1.6-mm CSP package
  • 12-mm 2 Total solution size
  • Linear battery charger with 1.25-mA to 500-mA fast charge current range
    • 0.5% Accurate I 2C programmable battery regulation voltage ranging from 3.6 V to 4.6 V in 10-mV steps
    • Configurable termination current supporting down to 0.5 mA
    • 20-V Tolerant input with typical 3.4-V to 5.5-V input voltage operating range
    • Programmable thermal charging profile, fully configurable hot, warm, cool and cold thresholds
  • Power Path management for powering system and charging battery
    • I 2C Programmable regulated system voltage (PMID) ranging from 4.4V to 4.9V in addition to battery voltage tracking and Input pass-though options
    • Dynamic power path management optimizes charging from weak adapters
    • Advanced I 2C control allows host to disconnect the battery or adapter as needed
  • I 2C Configurable load switch or up to 150-mA LDO output
    • Programmable range from 0.6 V to 3.7 V in 100-mV steps
  • Ultra low Iddq for extended battery life
    • 10-nA Ship mode battery Iq
    • 400-nA Iq While powering the system (PMID and VDD on)
  • One push-button wake-up and reset input with adjustable timers
    • Supports system power cycle and HW reset
  • 16-Bit ADC
    • Monitoring of charge current, battery thermistor and battery, input and system (PMID) voltages
    • General purpose ADC input
  • Always on 1.8-V VDD LDO supporting loads up to 10 mA
  • Safety-Related Certifications
    • TUV IEC 62368 Certification
  • 20-Pin 2-mm x 1.6-mm CSP package
  • 12-mm 2 Total solution size

The BQ25155 is a highly integrated battery charge management IC that integrates the most common functions for wearable, portable and small medical devices, namely a charger, a regulated output voltage rail for system power, ADC for battery and system monitoring, a LDO, and push-button controller.

The BQ25155 IC integrates a linear charger with Power Path that enables quick and accurate charging for small batteries while providing a regulated voltage to the system. The regulated system voltage (PMID) output may be configured through I 2C based on the recommended operating condition of downstream IC’s and system loads for optimal system operation.

The device supports charge current up to 500 mA and supports termination current down to 0.5 mA for maximum charge. The battery is charged using a standard Li-Ion charge profile with three phases: pre-charge, constant current and constant voltage regulation.

The device integrates advanced power path management and control that allows the device to provide power to the system while charging the battery even with poor adapters. The host may also control the power path through I 2C allowing it to disconnect the input adapter and/or battery without physically removing them. The single push-button input eliminates the need of a separate button controller IC reducing the total solution footprint. The push-button input can be used for wake functions or to reset the system. A 16-bit ADC enables accurate battery voltage monitoring and can be used to enable a low Iq gauging to monitor battery health. It can also be used to measure the battery temperature using a thermistor connected to the TS pin as well as external system signals through the ADCIN pin. The low quiescent current during operation and shutdown enables maximum battery life. The input current limit, charge current, LDO output voltage, and other parameters are programmable through the I 2C interface making the BQ25155 a very flexible charging solution. A voltage-based JEITA compatible (or standard HOT/COLD) battery pack thermistor monitoring input (TS) is included that monitors battery temperature and automatically changes charge parameters to prevent the battery from charging outside of its safe temperature range. The temperature thresholds are also programable through I 2C allowing the host to customize the thermal charging profile. The charger is optimized for 5-V USB input, with 20-V absolute maximum tolerance to withstand line transients. The device also integrates a linear regulator to provide a quiet rail for radios or processors and can be independently sourced and controlled through I 2C.

The BQ25155 is a highly integrated battery charge management IC that integrates the most common functions for wearable, portable and small medical devices, namely a charger, a regulated output voltage rail for system power, ADC for battery and system monitoring, a LDO, and push-button controller.

The BQ25155 IC integrates a linear charger with Power Path that enables quick and accurate charging for small batteries while providing a regulated voltage to the system. The regulated system voltage (PMID) output may be configured through I 2C based on the recommended operating condition of downstream IC’s and system loads for optimal system operation.

The device supports charge current up to 500 mA and supports termination current down to 0.5 mA for maximum charge. The battery is charged using a standard Li-Ion charge profile with three phases: pre-charge, constant current and constant voltage regulation.

The device integrates advanced power path management and control that allows the device to provide power to the system while charging the battery even with poor adapters. The host may also control the power path through I 2C allowing it to disconnect the input adapter and/or battery without physically removing them. The single push-button input eliminates the need of a separate button controller IC reducing the total solution footprint. The push-button input can be used for wake functions or to reset the system. A 16-bit ADC enables accurate battery voltage monitoring and can be used to enable a low Iq gauging to monitor battery health. It can also be used to measure the battery temperature using a thermistor connected to the TS pin as well as external system signals through the ADCIN pin. The low quiescent current during operation and shutdown enables maximum battery life. The input current limit, charge current, LDO output voltage, and other parameters are programmable through the I 2C interface making the BQ25155 a very flexible charging solution. A voltage-based JEITA compatible (or standard HOT/COLD) battery pack thermistor monitoring input (TS) is included that monitors battery temperature and automatically changes charge parameters to prevent the battery from charging outside of its safe temperature range. The temperature thresholds are also programable through I 2C allowing the host to customize the thermal charging profile. The charger is optimized for 5-V USB input, with 20-V absolute maximum tolerance to withstand line transients. The device also integrates a linear regulator to provide a quiet rail for radios or processors and can be independently sourced and controlled through I 2C.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet BQ25155 I2C Controlled 1-Cell 500-mA Linear Battery Charger With 10-nA Ship Mode, Power Path With Regulated System (PMID) Voltage, ADC, and LDO datasheet (Rev. B) PDF | HTML 01 Aug 2023
Technical article 3 ways low-Iq technologies extend battery life without compromising system performance PDF | HTML 05 Jan 2024
Application note Implementing 2-V Charge Inhibition PDF | HTML 31 Mai 2023
Application note High-Efficiency Charging for TWS Using a 2-Pin Interface Application Report (Rev. A) PDF | HTML 16 Mai 2023
Application note State of Charge Estimation Using Smart Battery Charger PDF | HTML 11 Okt 2021
Technical article Benefits of rechargeable batteries in real-time location system trackers PDF | HTML 10 Aug 2020
Technical article When to use rechargeable batteries in small battery applications PDF | HTML 01 Okt 2019
Technical article Overcoming design challenges for low quiescent current in small, battery-powered d PDF | HTML 29 Aug 2019
Application note Battery Discharge Implementation in Warm or Hot Temperatures 02 Jul 2019
Application note BQ2515x Setup Guide 18 Jun 2019
EVM User's guide BQ2515xEVM User's Guide (Rev. A) 13 Jun 2019
Technical article Pull the tab: How to implement ship mode in your lithium-ion battery design PDF | HTML 20 Feb 2019
User guide Small Form Factor Design for BQ25150 24 Jul 2018

Design und Entwicklung

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Evaluierungsplatine

BQ25150EVM — Erweiterte Low-IQ-Leistungszweig-Ladeverwaltungslösung für Wearables und Hearables – Evaluierungsmod

The bq25150EVM evaluation module is an integrated battery charge management IC that integrates the most common functions for wearables devices: Linear charger, regulated output, load switch, manual reset with timer, ADC, ship mode and advanced power path. The low quiescent current during operation (...)
Benutzerhandbuch: PDF
Evaluierungsplatine

BQ25155EVM — Erweiterte Low-IQ-Leistungszweig-Ladeverwaltungslösung für Wearables und Hearables – Evaluierungsmod

The BQ25155EVM evaluation module (EVM) is an integrated battery charge management IC that integrates the most common functions for wearable devices: linear charger, regulated output, load switch, manual reset with timer, ADC, ship mode and advanced power path. The low quiescent current during (...)

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Schnittstellenadapter

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Treiber oder Bibliothek

BQ2515XSW-LINUX — Linux-Treiber für BQ2515X

The Linux driver supports the BQ25155 I2C controlled, 1-cell, 500-mA linear charger. The Linux driver supports communication through the I2C bus and interfaces with the power supply sub-system.

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: no   

Supported (...)

Support-Software

SLUC680 BQ25155 Setup Guide Tool

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

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Hardware-Entwicklung
Evaluierungsplatine
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Gerberdatei

Linear Charger NTC Calculator

SLUC670.ZIP (350 KB)
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
DSBGA (YFP) 20 Ultra Librarian

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  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
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