제품 상세 정보

Number of series cells 1 Charge current (max) (A) 3 Vin (max) (V) 13.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.4 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, USB D+/D-/BC1.2 integrated, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 3 Vin (max) (V) 13.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.4 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, USB D+/D-/BC1.2 integrated, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGE) 24 16 mm² 4 x 4
  • High-efficiency, 1.5-MHz, synchronous switch-mode buck charger
    • 92% charge efficiency at 2-A from 5-V input
    • Optimized for USB voltage input (5 V)
  • Supports USB On-The-Go (OTG)
    • Boost converter with up to 1.2-A output
    • 92% boost efficiency at 1-A output
    • Accurate constant current (CC) limit
    • Soft-start up to 500-µF capacitive load
    • Output short circuit protection
  • Single input to support USB input and high voltage adapters
    • Support 3.9-V to 13.5-V input voltage range with 22-V absolute maximum input voltage rating
    • Maximum power tracking by input voltage limit up to 4.6 V (VINDPM)
    • VINDPM threshold automatically tracks battery voltage
    • Auto detect USB SDP, DCP and non-standard adaptors
  • High battery discharge efficiency with 19.5-mΩ battery discharge MOSFET
  • Narrow VDC (NVDC) power path management
    • Instant-on works with no battery or deeply discharged battery
    • Ideal diode operation in battery supplement mode
  • High integration includes all MOSFETs, current sensing and loop compensation
  • 58-µA low battery leakage current with system voltage standby
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±6% at 1.2-A and 1.8-A charge current regulation
    • ±5% at 0.5-A, 1.2-A and 1.8-A input current regulation
  • Safety-Related Certification:
    • IEC 62368-1 CB Certification
  • High-efficiency, 1.5-MHz, synchronous switch-mode buck charger
    • 92% charge efficiency at 2-A from 5-V input
    • Optimized for USB voltage input (5 V)
  • Supports USB On-The-Go (OTG)
    • Boost converter with up to 1.2-A output
    • 92% boost efficiency at 1-A output
    • Accurate constant current (CC) limit
    • Soft-start up to 500-µF capacitive load
    • Output short circuit protection
  • Single input to support USB input and high voltage adapters
    • Support 3.9-V to 13.5-V input voltage range with 22-V absolute maximum input voltage rating
    • Maximum power tracking by input voltage limit up to 4.6 V (VINDPM)
    • VINDPM threshold automatically tracks battery voltage
    • Auto detect USB SDP, DCP and non-standard adaptors
  • High battery discharge efficiency with 19.5-mΩ battery discharge MOSFET
  • Narrow VDC (NVDC) power path management
    • Instant-on works with no battery or deeply discharged battery
    • Ideal diode operation in battery supplement mode
  • High integration includes all MOSFETs, current sensing and loop compensation
  • 58-µA low battery leakage current with system voltage standby
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±6% at 1.2-A and 1.8-A charge current regulation
    • ±5% at 0.5-A, 1.2-A and 1.8-A input current regulation
  • Safety-Related Certification:
    • IEC 62368-1 CB Certification

The BQ25606 is a highly-integrated standalone 3.0-A switch-mode battery charge management and system power path management device for single cell Li-ion and Li-polymer batteries. The solution is highly integrated with input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time, and extends battery life during discharging phase.

The BQ25606 features fast charging with high input voltage support for a wide range of standalone chargers and portable devices. Its input voltage and current regulation deliver maximum charging power to the battery. It also integrates a bootstrap diode for the high-side gate drive for simplified system design.

The device supports a wide range of input sources, including standard USB host port, USB charging port, and USB compliant high voltage adapter. The device sets the default input current limit based on the built-in USB interface. The device is compliant with the USB 2.0 and USB 3.0 power specs with input current and voltage regulation. When the built-in USB interface identifies the input adaptor is unknown, the input current limit of the device is determined by the ILIM pin setting resistor value. The device also meets the USB On-the-Go (OTG) operation power rating specification by supplying 5.15 V on VBUS with a constant current limit up to 1.2 A.

The power path management regulates the system slightly above battery voltage but does not drop below the 3.5-V minimum system voltage. With this feature, the system maintains operation even when the battery is completely depleted or removed. When the input current limit or voltage limit is reached, the power path management automatically reduces the charge current. As the system load continues to increase, the power path discharges the battery until the system power requirement is met. This Supplement mode prevents overloading the input source.

The device initiates and completes a charging cycle without software control. It senses battery voltage and charges the battery in three phases: pre-conditioning, constant current, and constant voltage. At the end of the charging cycle, the charger automatically terminates when the charge current is below a preset limit and the battery voltage is higher than the recharge threshold. If the fully charged battery falls below the recharge threshold, the charger automatically starts another charging cycle.

The charger provides various safety features for battery charging and system operations including: battery negative temperature coefficient thermistor monitoring, charging safety timer, and overvoltage and overcurrent protections. The thermal regulation reduces charge current when the junction temperature exceeds 110°C. The STAT output reports charging status and any fault conditions. Other safety features include battery temperature sensing for charge and boost mode, thermal regulation and thermal shutdown, and input UVLO and overvoltage protection.

The device is available in a 24-pin, 4 mm x 4 mm QFN package.

The BQ25606 is a highly-integrated standalone 3.0-A switch-mode battery charge management and system power path management device for single cell Li-ion and Li-polymer batteries. The solution is highly integrated with input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time, and extends battery life during discharging phase.

The BQ25606 features fast charging with high input voltage support for a wide range of standalone chargers and portable devices. Its input voltage and current regulation deliver maximum charging power to the battery. It also integrates a bootstrap diode for the high-side gate drive for simplified system design.

The device supports a wide range of input sources, including standard USB host port, USB charging port, and USB compliant high voltage adapter. The device sets the default input current limit based on the built-in USB interface. The device is compliant with the USB 2.0 and USB 3.0 power specs with input current and voltage regulation. When the built-in USB interface identifies the input adaptor is unknown, the input current limit of the device is determined by the ILIM pin setting resistor value. The device also meets the USB On-the-Go (OTG) operation power rating specification by supplying 5.15 V on VBUS with a constant current limit up to 1.2 A.

The power path management regulates the system slightly above battery voltage but does not drop below the 3.5-V minimum system voltage. With this feature, the system maintains operation even when the battery is completely depleted or removed. When the input current limit or voltage limit is reached, the power path management automatically reduces the charge current. As the system load continues to increase, the power path discharges the battery until the system power requirement is met. This Supplement mode prevents overloading the input source.

The device initiates and completes a charging cycle without software control. It senses battery voltage and charges the battery in three phases: pre-conditioning, constant current, and constant voltage. At the end of the charging cycle, the charger automatically terminates when the charge current is below a preset limit and the battery voltage is higher than the recharge threshold. If the fully charged battery falls below the recharge threshold, the charger automatically starts another charging cycle.

The charger provides various safety features for battery charging and system operations including: battery negative temperature coefficient thermistor monitoring, charging safety timer, and overvoltage and overcurrent protections. The thermal regulation reduces charge current when the junction temperature exceeds 110°C. The STAT output reports charging status and any fault conditions. Other safety features include battery temperature sensing for charge and boost mode, thermal regulation and thermal shutdown, and input UVLO and overvoltage protection.

The device is available in a 24-pin, 4 mm x 4 mm QFN package.

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기술 자료

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11개 모두 보기
유형 직함 날짜
* Data sheet BQ25606 Standalone 1-Cell 3.0-A Buck Battery Charger datasheet (Rev. C) PDF | HTML 2021/09/29
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 2024/04/30
Application note Selection of Single-Cell Buck Narrow VDC Switching Battery Chargers PDF | HTML 2022/11/10
Application note USB D+/D- Input Current Limit Detection PDF | HTML 2020/12/30
Application note Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) 2018/05/01
Application note Designing Standalone Single Cell 3-A Charger with bq25606 2017/11/30
User guide bq25606 PWR772 Evaluation Module (Rev. A) 2017/10/06
Technical article How to choose the right charger for industrial batteries PDF | HTML 2017/09/13
Technical article Powering the smart home with a simple charger PDF | HTML 2017/07/28
Application note Battery Charger Overload Protection in Boost Mode Operation 2017/07/12
Analog Design Journal Dynamic power management for faster, more efficient battery charging 2013/10/28

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평가 보드

BQ25606EVM-772 — BQ25606 NVDC 전원 경로 관리를 지원하는 단일 셀 3A 독립형 배터리 충전기 평가 모듈

The bq25606 evaluation module (EVM) is a complete charger module for evaluating a standalone single cell battery charger using the bq25606 device. The user's guide provides detailed testing instructions for the bq25606 evaluation modules. Also included are descriptions of the necessary equipment, (...)
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VQFN (RGE) 24 Ultra Librarian

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