제품 상세 정보

Rating Catalog Number of series cells 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Cell chemistry Lead Acid Charge current (max) (A) 20 Features Adjustable switching frequency, BAT temp thermistor monitoring (JEITA profile), Bidirectional, IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Integrated LDO, Power Path, SYNC Pin, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.2 Vin (max) (V) 70 Absolute max Vin (max) (V) 85 Control topology Switch-Mode Buck-boost Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 70 Control interface I2C TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
Rating Catalog Number of series cells 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Cell chemistry Lead Acid Charge current (max) (A) 20 Features Adjustable switching frequency, BAT temp thermistor monitoring (JEITA profile), Bidirectional, IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Integrated LDO, Power Path, SYNC Pin, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.2 Vin (max) (V) 70 Absolute max Vin (max) (V) 85 Control topology Switch-Mode Buck-boost Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 70 Control interface I2C TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
VQFN (RRV) 36 30 mm² 6 x 5
  • Wide input voltage operating range: 4.4V to 70V
  • Wide battery voltage operating range: up-to 70V
    • 6V up-to 48V lead-acid charging profile with bulk, absorb and float voltage charging phases
    • Charge voltage temperature compensation
  • Synchronous buck charge controller with NFET drivers
    • Adjustable switching frequency from 200kHz to 600kHz
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Optional gate driver supply input for optimized efficiency
  • Bidirectional converter operation (Reverse Mode) supporting USB-PD Extended Power Range (EPR)
    • Adjustable input voltage (VAC) regulation from 3.3V to 65V with 20mV/step
    • Adjustable input current regulation (RAC_SNS) from 400mA to 20A with 50mA/step using 2mΩ resistor
  • Direct power path management for highest efficiency to power system
    • System power selection from adapter or battery
    • Dynamic power management
    • All N-channel FET drivers
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±3% charge current regulation
    • ±3% input current regulation
  • I2C controlled for optimal system performance with resistor-programmable option
    • Hardware adjustable input and output current limits
  • Integrated 16-bit ADC for voltage, current, and temperature monitoring
  • Low battery quiescent current
  • High safety integration
    • Adjustable input overvoltage and undervoltage protection
    • Battery Overvoltage and overcurrent protection
    • Charging safety timer in CV Mode
    • Thermal shutdown
  • Status outputs
    • Adapter present status (PG)
    • Charger Operation status
  • Package
    • 36-pin 6mm × 5mm QFN
  • Wide input voltage operating range: 4.4V to 70V
  • Wide battery voltage operating range: up-to 70V
    • 6V up-to 48V lead-acid charging profile with bulk, absorb and float voltage charging phases
    • Charge voltage temperature compensation
  • Synchronous buck charge controller with NFET drivers
    • Adjustable switching frequency from 200kHz to 600kHz
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Optional gate driver supply input for optimized efficiency
  • Bidirectional converter operation (Reverse Mode) supporting USB-PD Extended Power Range (EPR)
    • Adjustable input voltage (VAC) regulation from 3.3V to 65V with 20mV/step
    • Adjustable input current regulation (RAC_SNS) from 400mA to 20A with 50mA/step using 2mΩ resistor
  • Direct power path management for highest efficiency to power system
    • System power selection from adapter or battery
    • Dynamic power management
    • All N-channel FET drivers
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±3% charge current regulation
    • ±3% input current regulation
  • I2C controlled for optimal system performance with resistor-programmable option
    • Hardware adjustable input and output current limits
  • Integrated 16-bit ADC for voltage, current, and temperature monitoring
  • Low battery quiescent current
  • High safety integration
    • Adjustable input overvoltage and undervoltage protection
    • Battery Overvoltage and overcurrent protection
    • Charging safety timer in CV Mode
    • Thermal shutdown
  • Status outputs
    • Adapter present status (PG)
    • Charger Operation status
  • Package
    • 36-pin 6mm × 5mm QFN

The BQ25751 is a wide input voltage, switched-mode buck-boost battery charge controller with direct power path control. The device offers high-efficiency battery charging over a wide voltage range with bulk, float and absorption charging for lead-acid batteries. The device integrates all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use.

Besides the I2C host-controlled charging mode, the device also supports standalone charging mode via resistor programmable limits. Input current, charge current and charge voltage regulation targets can be set via the ILIM_HIZ, ICHG and FB pins, respectively.

The BQ25751 is a wide input voltage, switched-mode buck-boost battery charge controller with direct power path control. The device offers high-efficiency battery charging over a wide voltage range with bulk, float and absorption charging for lead-acid batteries. The device integrates all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use.

Besides the I2C host-controlled charging mode, the device also supports standalone charging mode via resistor programmable limits. Input current, charge current and charge voltage regulation targets can be set via the ILIM_HIZ, ICHG and FB pins, respectively.

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추가 정보 요청

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기술 자료

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2개 모두 보기
유형 직함 날짜
* Data sheet BQ25751: Standalone/I2C Controlled, 70V Bidirectional Buck-Boost Lead Acid Battery Charge Controller with Direct Power Path Control datasheet PDF | HTML 2024/12/08
Application note How To Implement External P&O Feature On BQ2575X PDF | HTML 2025/05/16

설계 및 개발

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

평가 보드

BQ25751EVM — BQ25751 평가 모듈

BQ25751EVM 평가 모듈(EVM)은 4.4V~70V의 넓은 입력 범위, 70V의 넓은 출력 전압 범위, 양방향 기능을 지원하는 벅-부스트 배터리 충전 컨트롤러인 BQ25751 IC를 위한 완전한 평가 시스템입니다. BQ25751EVM은 최대 입력 및 출력이 55 V이며 최대 충전 전류는 10A입니다.
사용 설명서: PDF | HTML
TI.com에서 구매 불가
드라이버 또는 라이브러리

BQ25751-FS BQ25751 functional safety FIT rate and pin FMA

BQ25751 functional safety FIT rate and pin FMA
지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
배터리 충전기 IC
BQ25751 전원 경로가 있는 독립형 또는 I²C 제어, 70V, 벅-부스트, 납산 배터리 충전 컨트롤러
패키지 CAD 기호, 풋프린트 및 3D 모델
VQFN (RRV) 36 Ultra Librarian

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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