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BQ25853-Q1

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BQ25853-Q1

現行
產品規格表 立即訂購

產品詳細資料

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) TI functional safety category Functional Safety-Capable 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) TI functional safety category Functional Safety-Capable 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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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 BQ25853-Q1 Automotive Bidirectional Charge Controller for Backup Power datasheet (Rev. A) PDF | HTML 2026/6/4
應用說明 Configuring Multiple BQ2575x, BQ2582x, and BQ2585x-Q1 Devices in Parallel to Achieve a Higher Output Current PDF | HTML 2026/9/8
Application brief Designing a Robust Backup Power System for Automotive Applications PDF | HTML 2026/6/5

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BQ25853EVM — BQ25853-Q1 評估模組

BQ25853EVM 評估模組 (EVM) 是適用於 BQ25853-Q1 IC 的完整評估系統，這是一款降壓升壓超級電容器充電控制器，具有 4.2V - 70V 寬輸入範圍、最高 70V 的寬輸出電壓範圍和雙向功能。

BQ25853EVM 的最大輸入與輸出為 55V，最大充電電流為 10A。

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BQ25853-Q1 full data sheet and other information are available by request.
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BQ25853-Q1-CALC — BQ25853-Q1 設計計算機

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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VQFN (RRV) 36 Ultra Librarian
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