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電池充電器 IC

BQ24072T

現行

獨立式 1 b芯 1.5-A 線性電池充電器、電源路徑、4.2-V VBAT 和具 TD 的電壓式 TS

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BQ25180 現行 採用 WCSP 封裝且具有穩壓電源路徑的 1-A 鋰離子和 LiFePO4 I²C 可編程線性充電器 This product is 1-A Li-ion and LiFePO4 I²C programmable linear charger with regulated power path in a WCSP package

BQ24072T

現行
產品規格表 立即訂購

產品詳細資料

Number of series cells 1 Charge current (max) (A) 1.5 Vin (max) (V) 6.4 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 28 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.35 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 1.5 Vin (max) (V) 6.4 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 28 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.35 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGT) 16 9 mm² 3 x 3
  • Fully Compliant USB Charger
  • Selectable 100 mA and 500 mA maximum input current
  • 100 mA Maximum current limit ensures compliance to USB-IF standard
  • Input based dynamic power management (VIN-DPM) for protection against poor USB sources
  • 28 V Input lting with over-voltage protection
  • Integrated dynamic power path management (DPPM) function simultaneously and independently powers the system and charges the battery
  • System output tracks battery voltage (BQ24072T)
  • Supports up to 1.5 A charge current with current monitoring output (ISET)
  • Programmable Input Current Limit up to 1.5 A for wall adapters
  • Battery disconnect function with SYSOFF input
  • Reverse current, short-circuit and thermal protection
  • Flexible voltage based NTC thermistor input
  • Proprietary start up sequence limits inrush current
  • Status indication – charging/done, power good
  • Small 3 mm × 3 mm 16 Lead VQFN Package
  • Fully Compliant USB Charger
  • Selectable 100 mA and 500 mA maximum input current
  • 100 mA Maximum current limit ensures compliance to USB-IF standard
  • Input based dynamic power management (VIN-DPM) for protection against poor USB sources
  • 28 V Input lting with over-voltage protection
  • Integrated dynamic power path management (DPPM) function simultaneously and independently powers the system and charges the battery
  • System output tracks battery voltage (BQ24072T)
  • Supports up to 1.5 A charge current with current monitoring output (ISET)
  • Programmable Input Current Limit up to 1.5 A for wall adapters
  • Battery disconnect function with SYSOFF input
  • Reverse current, short-circuit and thermal protection
  • Flexible voltage based NTC thermistor input
  • Proprietary start up sequence limits inrush current
  • Status indication – charging/done, power good
  • Small 3 mm × 3 mm 16 Lead VQFN Package

The BQ2407xT series of devices are integrated Li-ion linear chargers and system power path management devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter and support charge currents up to 1.5A. The input voltage range with input over-voltage protection supports unregulated adapters. The USB input current limit accuracy and start up sequence allow the BQ2407xT to meet USB-IF inrush current specification. Additionally, the input dynamic power management (VIN - DPM) prevents the charger from crashing incorrectly configure USB sources.

The BQ2407xT features dynamic power path management (DPPM) that powers the system while simultaneously and independently charging the battery. The DPPM circuit reduces the charge current when the input current limit causes the system output to fall to the DPPM threshold; thus, supplying the system load at all times while monitoring the charge current separately. This feature reduces the number of charge and discharge cycles on the battery, allows for proper charge termination and enables the system to run with a defective or absent battery pack.

Additionally, the regulated system input enables instant system turn-on when plugged in even with a totally discharged battery. The power-path management architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents, enabling the use of a smaller adapter.

The battery is charged in three phases: conditioning, constant current, and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The input current limit and charge current are programmable using external resistors.

The BQ2407xT series of devices are integrated Li-ion linear chargers and system power path management devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter and support charge currents up to 1.5A. The input voltage range with input over-voltage protection supports unregulated adapters. The USB input current limit accuracy and start up sequence allow the BQ2407xT to meet USB-IF inrush current specification. Additionally, the input dynamic power management (VIN - DPM) prevents the charger from crashing incorrectly configure USB sources.

The BQ2407xT features dynamic power path management (DPPM) that powers the system while simultaneously and independently charging the battery. The DPPM circuit reduces the charge current when the input current limit causes the system output to fall to the DPPM threshold; thus, supplying the system load at all times while monitoring the charge current separately. This feature reduces the number of charge and discharge cycles on the battery, allows for proper charge termination and enables the system to run with a defective or absent battery pack.

Additionally, the regulated system input enables instant system turn-on when plugged in even with a totally discharged battery. The power-path management architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents, enabling the use of a smaller adapter.

The battery is charged in three phases: conditioning, constant current, and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The input current limit and charge current are programmable using external resistors.
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類型 標題 日期
* Data sheet BQ2407xT Standalone 1-Cell 1.5-A Linear Battery Charger with Power Path and Voltage-Based TS datasheet (Rev. C) PDF | HTML 2019年 8月 14日
Application note Configuring Standalone Linear Power Path Chargers (Rev. A) PDF | HTML 2020年 4月 6日
Application note Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) 2018年 5月 1日
User guide bq24072/3/4/5/9(T) and bq24230/2 1.5-A Single-Chip Li-Ion (Rev. E) 2017年 1月 3日
Application note Selecting the Best bq2407x/23x Single Cell Battery Charger for your Application 2012年 11月 8日

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BQ24072TEVM — BQ24072T 評估模組

This user’s guide describes the bq24072/3/4/5/9(T) and bq24230/2 (bqTiny-III™) evaluation module (EVM). The EVM provides a convenient method for evaluating the performance of a charge management and system power solution for portable applications using the bq24072/3/4/5/9(T) and (...)

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VQFN (RGT) 16 Ultra Librarian
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