홈 배터리 관리 IC 배터리 충전기 IC
홈
배터리 관리 IC
배터리 충전기 IC
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BQ25853-Q1

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차량용, I2C 제어, 70V, 양방향 벅 부스트 슈퍼 커패시터 컨트롤러

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데이터 시트

BQ25853-Q1

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데이터 시트 지금 주문하기

제품 상세 정보

Rating Automotive Number of series cells 16 Cell chemistry Li-Ion/Li-Polymer, LiFePO4, Lithium Phosphate/LiFePO4, NiMH, SuperCap Charge current (max) (A) 20 Features AEC-Q100 Automotive Qual, 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, SYNC Pin, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.4 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, Standalone (RC-Settable) Operating temperature range (°C) -40 to 150
Rating Automotive Number of series cells 16 Cell chemistry Li-Ion/Li-Polymer, LiFePO4, Lithium Phosphate/LiFePO4, NiMH, SuperCap Charge current (max) (A) 20 Features AEC-Q100 Automotive Qual, 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, SYNC Pin, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.4 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, Standalone (RC-Settable) Operating temperature range (°C) -40 to 150
VQFN (RRV) 36 30 mm² (6 mm × 5 mm)
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: −40ºC ≤ TA≤ 150ºC
  • Wide input voltage operating range: 4.4V to 70V
  • Wide output voltage operating range: up-to 70V supercapacitor charging
  • Synchronous buck-boost controller with NFET drivers
    • Buck only mode configurable with MODE pin
    • Adjustable fSW from 200kHz to 600kHz
    • Switching frequency dithering for EMI noise reduction (DRSS)
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Optional gate driver supply input for optimized efficiency
  • Bidirectional converter operation to support autonomous backup mode with no I2C interactions
    • VREV_FB pin to program system voltage in reverse mode with resistor divider
    • ACUV pin to program reverse mode automatic entry/exit threshold
    • Adjustable output current regulation (RBAT_SNS) up to 35A using 2.5mΩ resistor
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±3% charge/input current regulation
    • ±0.5% reverse mode voltage regulation
    • ±2% input voltage 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
  • High safety integration
    • Adjustable input over- and under-voltage protection
    • Overvoltage and overcurrent protection
    • Thermal shutdown
  • Package
    • 36-pin 5mm × 6mm QFN with wettable flanks
  • Functional Safety-Capable
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: −40ºC ≤ TA≤ 150ºC
  • Wide input voltage operating range: 4.4V to 70V
  • Wide output voltage operating range: up-to 70V supercapacitor charging
  • Synchronous buck-boost controller with NFET drivers
    • Buck only mode configurable with MODE pin
    • Adjustable fSW from 200kHz to 600kHz
    • Switching frequency dithering for EMI noise reduction (DRSS)
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Optional gate driver supply input for optimized efficiency
  • Bidirectional converter operation to support autonomous backup mode with no I2C interactions
    • VREV_FB pin to program system voltage in reverse mode with resistor divider
    • ACUV pin to program reverse mode automatic entry/exit threshold
    • Adjustable output current regulation (RBAT_SNS) up to 35A using 2.5mΩ resistor
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±3% charge/input current regulation
    • ±0.5% reverse mode voltage regulation
    • ±2% input voltage 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
  • High safety integration
    • Adjustable input over- and under-voltage protection
    • Overvoltage and overcurrent protection
    • Thermal shutdown
  • Package
    • 36-pin 5mm × 6mm QFN with wettable flanks
  • Functional Safety-Capable

The BQ25853-Q1 is an automotive grade, wide input voltage, switched-mode buck-boost battery charge controller with bidirectional power flow support. The device offers high-efficiency supercapacitor charging over a wide voltage range with accurate charge current and charge voltage regulation. The device integrates all the loop compensation for the buck-boost converter, thereby providing a high density design with ease of use. In reverse mode, the device draws power from the supercapacitor and regulates the input terminal voltage with an added constant current loop for protection.

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

The BQ25853-Q1 is an automotive grade, wide input voltage, switched-mode buck-boost battery charge controller with bidirectional power flow support. The device offers high-efficiency supercapacitor charging over a wide voltage range with accurate charge current and charge voltage regulation. The device integrates all the loop compensation for the buck-boost converter, thereby providing a high density design with ease of use. In reverse mode, the device draws power from the supercapacitor and regulates the input terminal voltage with an added constant current loop for protection.

Besides the I2C host-controlled charging mode, the device also supports standalone charging mode via resistor programmable limits. Input current, charge current, charge voltage regulation, and reverse mode 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
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 BQ25853-Q1 Automotive Bidirectional Charge Controller for Backup Power datasheet (Rev. A) PDF | HTML 2026. 6. 4
Application brief Designing a Robust Backup Power System for Automotive Applications PDF | HTML 2026. 6. 5

설계 및 개발

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

평가 보드

BQ25853EVM — BQ25853-Q1 평가 모듈

BQ25853EVM EVM(평가 모듈)은 4.2V~70V의 넓은 입력 범위, 최대 70V의 넓은 출력 전압 범위, 양방향 기능을 지원하는 벅-부스트 슈퍼 커패시터 충전 컨트롤러인 BQ25853-Q1 IC를 위한 완전한 평가 시스템입니다.

BQ25853EVM은 최대 입력 및 출력이 55 V이며 최대 충전 전류는 10A입니다.

사용 설명서: PDF | HTML
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BQ25853Q1-DESIGN — BQ25853-Q1 전체 데이터시트

BQ25853-Q1 full data sheet and other information are available by request.
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계산 툴

BQ25853-Q1-CALC — BQ25853-Q1 설계 계산기

BQ25853-Q1 design calculator is a calculation tool for BQ25853-Q1 which is a wide input voltage, switched mode, buck-boost supercapacitor charge controller with bidirectional power flow support.
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