홈 배터리 관리 IC 배터리 충전기 IC
홈
배터리 관리 IC
배터리 충전기 IC

BQ24171

활성

JEITA 준수 및 전원 경로를 지원하는 독립형 1~3셀 4A 동기형 벅 배터리 충전기

지금 주문
데이터시트

BQ24171

활성
데이터시트 지금 주문

제품 상세 정보

Number of series cells 1, 2, 3 Charge current (max) (A) 4 Vin (max) (V) 17 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 15.5 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1, 2, 3 Charge current (max) (A) 4 Vin (max) (V) 17 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 15.5 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGY) 24 19.25 mm² 5.5 x 3.5
  • JEITA-Compatible Battery Temperature Sensing
  • 1.6-MHz Synchronous Switched-Mode Charger
    With 4-A Integrated N-MOSFETs
  • Up to 94% Efficiency
  • 30-V Input Rating With Adjustable Overvoltage
    Protection
    • 4.5-V to 17-V Input Operating Voltage
  • Battery Charge Voltage
    • Adjustable Charge Voltage up to 3-Series
      Cells
  • High Integration
    • Automatic Power Path Selector Between
      Adapter and Battery
    • Dynamic Power Management
    • Integrated 20-V Switching MOSFETs
    • Integrated Bootstrap Diode
    • Internal Loop Compensation
    • Internal Digital Soft Start
  • Safety
    • Thermal Regulation Loop Throttles Back
      Current to Limit TJ = 120°C
    • Thermal Shutdown
    • Battery Thermistor Sense Hot/Cold Charge
      Suspend and Battery Detect
    • Input Overvoltage Protection With
      Programmable Threshold
    • Cycle-by-Cycle Current Limit
  • Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±4% Charge Current Regulation
    • ±4% Input Current Regulation
  • Less Than 15-µA Battery Current With Adapter
    Removed
  • Less Than 1.5-mA Input Current With Adapter
    Present and Charge Disabled
  • Small QFN Package
    • 24-Pin, 5.5-mm × 3.5-mm QFN Package
  • JEITA-Compatible Battery Temperature Sensing
  • 1.6-MHz Synchronous Switched-Mode Charger
    With 4-A Integrated N-MOSFETs
  • Up to 94% Efficiency
  • 30-V Input Rating With Adjustable Overvoltage
    Protection
    • 4.5-V to 17-V Input Operating Voltage
  • Battery Charge Voltage
    • Adjustable Charge Voltage up to 3-Series
      Cells
  • High Integration
    • Automatic Power Path Selector Between
      Adapter and Battery
    • Dynamic Power Management
    • Integrated 20-V Switching MOSFETs
    • Integrated Bootstrap Diode
    • Internal Loop Compensation
    • Internal Digital Soft Start
  • Safety
    • Thermal Regulation Loop Throttles Back
      Current to Limit TJ = 120°C
    • Thermal Shutdown
    • Battery Thermistor Sense Hot/Cold Charge
      Suspend and Battery Detect
    • Input Overvoltage Protection With
      Programmable Threshold
    • Cycle-by-Cycle Current Limit
  • Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±4% Charge Current Regulation
    • ±4% Input Current Regulation
  • Less Than 15-µA Battery Current With Adapter
    Removed
  • Less Than 1.5-mA Input Current With Adapter
    Present and Charge Disabled
  • Small QFN Package
    • 24-Pin, 5.5-mm × 3.5-mm QFN Package

The bq24171 device is highly integrated stand-alone Li-ion and Li-polymer switched-mode battery charger with two integrated N-channel power MOSFETs. The device offers a constant-frequency synchronous PWM controller with high-accuracy regulation of input current, charge current, and voltage. The bq24171 closely monitors the battery pack temperature and allows charge only in a JEITA profile-compatible window with a lower charge rate at a low temperature and a lower charge voltage at a high temperature. The bq24171 device charges the battery in three phases: preconditioning, constant current, and constant voltage. The bq24171 charges up to 3-series cells with an adjustable cell voltage.

The bq24171 charges the battery in three phases: preconditioning, constant current, and constant voltage. The device is adjustable for up to three series Li+ cells.

Charge is terminated when the current reaches 10% of the fast charge rate. A programmable charge timer offers a safety backup. The bq24171 automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent current sleep mode when the input voltage falls below the battery voltage.

The bq24171 features Dynamic Power Management (DPM) to reduce the charge current when the input power limit is reached to avoid overloading the adapter. A highly accurate current-sense amplifier enables precise measurement of input current from adapter to monitor overall system power.

The bq24171 device provides power path selector gate driver ACDRV/CMSRC on input NMOS pair ACFET (Q1) and RBFET (Q2), and BATDRV on a battery PMOS device (Q3). When the qualified adapter is present, the system is directly connected to the adapter. Otherwise, the system is connected to the battery. In addition, the power path prevents battery from boosting back to the input.

The bq24171 charges battery from DC source as high as 17 V, including car battery. The input overvoltage limit is adjustable through the OVPSET pin. The AVCC, ACP and ACN pins are 30-V rating. When a high-voltage DC source is inserted, Q1 and Q2 remain off to avoid high voltage damage to the system.

For 1-cell applications, if the battery is not removable, the system can be directly connected to the battery to simplify the power path design and reduce the cost. With this configuration, the battery can automatically supplement the system load if the adapter is overloaded.

The bq24171 is available in a 24-pin, 5.5-mm × 3.5-mm thin QFN package.

The bq24171 device is highly integrated stand-alone Li-ion and Li-polymer switched-mode battery charger with two integrated N-channel power MOSFETs. The device offers a constant-frequency synchronous PWM controller with high-accuracy regulation of input current, charge current, and voltage. The bq24171 closely monitors the battery pack temperature and allows charge only in a JEITA profile-compatible window with a lower charge rate at a low temperature and a lower charge voltage at a high temperature. The bq24171 device charges the battery in three phases: preconditioning, constant current, and constant voltage. The bq24171 charges up to 3-series cells with an adjustable cell voltage.

The bq24171 charges the battery in three phases: preconditioning, constant current, and constant voltage. The device is adjustable for up to three series Li+ cells.

Charge is terminated when the current reaches 10% of the fast charge rate. A programmable charge timer offers a safety backup. The bq24171 automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent current sleep mode when the input voltage falls below the battery voltage.

The bq24171 features Dynamic Power Management (DPM) to reduce the charge current when the input power limit is reached to avoid overloading the adapter. A highly accurate current-sense amplifier enables precise measurement of input current from adapter to monitor overall system power.

The bq24171 device provides power path selector gate driver ACDRV/CMSRC on input NMOS pair ACFET (Q1) and RBFET (Q2), and BATDRV on a battery PMOS device (Q3). When the qualified adapter is present, the system is directly connected to the adapter. Otherwise, the system is connected to the battery. In addition, the power path prevents battery from boosting back to the input.

The bq24171 charges battery from DC source as high as 17 V, including car battery. The input overvoltage limit is adjustable through the OVPSET pin. The AVCC, ACP and ACN pins are 30-V rating. When a high-voltage DC source is inserted, Q1 and Q2 remain off to avoid high voltage damage to the system.

For 1-cell applications, if the battery is not removable, the system can be directly connected to the battery to simplify the power path design and reduce the cost. With this configuration, the battery can automatically supplement the system load if the adapter is overloaded.

The bq24171 is available in a 24-pin, 5.5-mm × 3.5-mm thin QFN package.
open-in-new 기타 배터리 충전기 IC 찾기
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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치보다 업그레이드된 기능을 지원하는 즉각적 대체품
BQ24172 활성 독립형 1~3셀 4A 동기형 벅 배터리 충전기 BQ24172 has integrated JEITA functionality.
비교 대상 장치와 유사한 기능
BQ24616 활성 JEITA 호환 독립형 1~6셀 벅 배터리 충전 컨트롤러 This product is a 10 A, six-series standalone buck switching controller with JEITA
BQ25306 활성 독립형 17V, 3A 1-2셀 벅 배터리 충전기 This product is a 3-A, two-series standalone buck switching charger with integrated sense resistor, small footprint with integrated MOSTFET

기술 문서

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모두 보기3
유형 직함 날짜
* Data sheet bq24171 JEITA-Compliant Stand-Alone, Switched-Mode Li-Ion and Li-Polymer Battery Charger With Integrated MOSFETs and Power Path Selector datasheet (Rev. C) PDF | HTML 2014/10/28
Application note BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers 2019/12/31
User guide bq24171EVM and bq24172EVM User's Guide (Rev. A) 2011/02/22

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

BQ24171EVM-706-15V — bq24171 JEITA 규격 독립형 스위치 모드 리튬 이온 및 리튬 폴리머 배터리용 평가 모듈

The Texas Instruments BQ24171EVM-706-15V (-003) evaluation module helps designers evaluate the operation and performance of the bq24171 synchronous battery charger. The EVM is also called the HPA706 (-003). This EVM is optimized for a 12V or 15V input voltage and charges between 1 and 3 cell (...)

사용 설명서: PDF
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계산 툴

SLUC244 — bqswitcherII calculation tools V1.2

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
배터리 충전기 IC
BQ24130 — 리튬 이온 및 슈퍼 커패시터용 독립형 1~3셀 벅 배터리 충전기 BQ24133 — 외부 전원 경로를 사용하는 독립형 1~3셀 2.5A 동기 벅 배터리 충전기 BQ24170 — 전원 경로 선택기를 지원하는 독립형 1~3셀 4A 동기형 벅 배터리 충전기 BQ24171 — JEITA 준수 및 전원 경로를 지원하는 독립형 1~3셀 4A 동기형 벅 배터리 충전기 BQ24172 — 독립형 1~3셀 4A 동기형 벅 배터리 충전기
다운로드
거버(Gerber) 파일

HPA706 Gerber Files

SLUC235.ZIP (308 KB)
다운로드
패키지 핀 다운로드
VQFN (RGY) 24 옵션 보기
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

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