产品详细信息

Number of series cells 1 Charge current (Max) (A) 1.5 Operating Vin (Max) (V) 16 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 4.1 Battery charge voltage (Max) (V) 4.1 Absolute Vin (safety rating) (Max) ((V)) 18 Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), Integrated LDO, Power Path Operating Vin (Min) (V) 4.35 Rating Catalog
Number of series cells 1 Charge current (Max) (A) 1.5 Operating Vin (Max) (V) 16 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 4.1 Battery charge voltage (Max) (V) 4.1 Absolute Vin (safety rating) (Max) ((V)) 18 Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), Integrated LDO, Power Path Operating Vin (Min) (V) 4.35 Rating Catalog
VQFN (RHL) 20 16 mm² 3.5 x 4.5
  • Small 3.5-mm × 4.5-mm QFN Package
  • Designed for Single-Cell Li-Ion- or Li-Polymer-
    Based Portable Applications
  • Integrated Dynamic Power-Path Management (DPPM)
    Feature Allowing the AC Adapter or the USB Port
    to Simultaneously Power the System and Charge
    the Battery
  • Power Supplement Mode Allows Battery to Supplement
    the USB or AC Input Current
  • Autonomous Power Source Selection (AC Adapter
    or USB)
  • Integrated USB Charge Control With Selectable
    100-mA and 500-mA Maximum Input Current Regulation
    Limits
  • Dynamic Total Current Management for USB
  • Supports Up to 2-A Total Current
  • 3.3-V Integrated LDO Output
  • Thermal Regulation for Charge Control
  • Charge Status Outputs for LED or System Interface
    Indicates Charge and Fault Conditions
  • Reverse Current, Short-Circuit, and Thermal
    Protection
  • Power Good (AC Adapter and USB Port Present)
    Status Outputs
  • Charge Voltage Options: 4.1 V, 4.2 V, or 4.36 V
  • APPLICATIONS
    • Smart Phones and PDAs
    • MP3 Players
    • Digital Cameras Handheld Devices
    • Internet Appliances

All other trademarks are the property of their respective owners

  • Small 3.5-mm × 4.5-mm QFN Package
  • Designed for Single-Cell Li-Ion- or Li-Polymer-
    Based Portable Applications
  • Integrated Dynamic Power-Path Management (DPPM)
    Feature Allowing the AC Adapter or the USB Port
    to Simultaneously Power the System and Charge
    the Battery
  • Power Supplement Mode Allows Battery to Supplement
    the USB or AC Input Current
  • Autonomous Power Source Selection (AC Adapter
    or USB)
  • Integrated USB Charge Control With Selectable
    100-mA and 500-mA Maximum Input Current Regulation
    Limits
  • Dynamic Total Current Management for USB
  • Supports Up to 2-A Total Current
  • 3.3-V Integrated LDO Output
  • Thermal Regulation for Charge Control
  • Charge Status Outputs for LED or System Interface
    Indicates Charge and Fault Conditions
  • Reverse Current, Short-Circuit, and Thermal
    Protection
  • Power Good (AC Adapter and USB Port Present)
    Status Outputs
  • Charge Voltage Options: 4.1 V, 4.2 V, or 4.36 V
  • APPLICATIONS
    • Smart Phones and PDAs
    • MP3 Players
    • Digital Cameras Handheld Devices
    • Internet Appliances

All other trademarks are the property of their respective owners

The bqTINY™ III-series of devices are highly integrated Li-ion linear chargers and system power-path management devices targeted at space-limited portable applications. The bqTINY III-series offer integrated USB-port and DC supply (AC adapter), power-path management with autonomous power-source selection, power FETs and current sensors, high accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device.

The bqTINY III-series powers the system while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination and allows the system to run with an absent or defective battery pack. This feature also allows for the system to instantaneously turn on from an external power source in the case of a deeply discharged battery pack. The IC design is focused on supplying continuous power to the system when available from the AC, USB, or battery sources.

The power select pin, PSEL, defines which input source is to be used first (primary source – AC or USB). If the primary source is not available, then the IC automatically switches over to the other secondary source if available or the battery as the last option. If the PSEL is set low, the USB input is selected first and if not available, the AC line is selected (if available) but programmed to a USB input limiting rate (100 mA/500 mA max). This feature allows the use of one input connector, where the host programs the PSEL pin according to what source is connected (AC adaptor or USB port).

The bq24038 replaces USBPG with pin VBSEL, to enable user selection of the charge voltage. In addition, pin ACPG was modified to PG. PG is active low when either ac power or USB power is detected.

The ISET1 pin programs the battery&3146;s fast charge constant current level with a resistor. During normal AC operation, the input supply provides power to both the OUT (System) and BAT pins. For peak or excessive loads (typically when operating from the USB power, PSEL = Low) that would cause the input source to enter current limit (or Q3 - USB FET limiting current) and its source and system voltage (OUT pin) to drop, the dynamic power-path management (DPPM) feature reduces the charging current attempting to prevent any further drop in system voltage. This feature allows the selection of a lower current rated adaptor based on the average load (ISYS-AVG + IBAT-PGM ) rather than a high peak transient load.

The bqTINY™ III-series of devices are highly integrated Li-ion linear chargers and system power-path management devices targeted at space-limited portable applications. The bqTINY III-series offer integrated USB-port and DC supply (AC adapter), power-path management with autonomous power-source selection, power FETs and current sensors, high accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device.

The bqTINY III-series powers the system while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination and allows the system to run with an absent or defective battery pack. This feature also allows for the system to instantaneously turn on from an external power source in the case of a deeply discharged battery pack. The IC design is focused on supplying continuous power to the system when available from the AC, USB, or battery sources.

The power select pin, PSEL, defines which input source is to be used first (primary source – AC or USB). If the primary source is not available, then the IC automatically switches over to the other secondary source if available or the battery as the last option. If the PSEL is set low, the USB input is selected first and if not available, the AC line is selected (if available) but programmed to a USB input limiting rate (100 mA/500 mA max). This feature allows the use of one input connector, where the host programs the PSEL pin according to what source is connected (AC adaptor or USB port).

The bq24038 replaces USBPG with pin VBSEL, to enable user selection of the charge voltage. In addition, pin ACPG was modified to PG. PG is active low when either ac power or USB power is detected.

The ISET1 pin programs the battery&3146;s fast charge constant current level with a resistor. During normal AC operation, the input supply provides power to both the OUT (System) and BAT pins. For peak or excessive loads (typically when operating from the USB power, PSEL = Low) that would cause the input source to enter current limit (or Q3 - USB FET limiting current) and its source and system voltage (OUT pin) to drop, the dynamic power-path management (DPPM) feature reduces the charging current attempting to prevent any further drop in system voltage. This feature allows the selection of a lower current rated adaptor based on the average load (ISYS-AVG + IBAT-PGM ) rather than a high peak transient load.

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类型 项目标题 下载最新的英语版本 日期
* 数据表 bq2403x Single-Chip Charge and System Power-path Management IC (bqTINY™) 数据表 (Rev. I) PDF | HTML 30 Dec 2014
技术文章 When to use rechargeable batteries in small battery applications 01 Oct 2019
选择指南 电源管理指南 2018 (Rev. K) 31 Jul 2018
应用手册 Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) 01 May 2018
技术文章 Should I use a linear charger or a switching charger? 31 Oct 2015
技术文章 Summertime and the livin' is easy 20 Jun 2014
用户指南 Power-Path Li-Ion Charger Selection 17 Oct 2008
用户指南 bq2403x (bqTiny-111) 1.5-A Single-Chip LiIon & Li-Pol Charge Mgmt IC EVM (Rev. A) 11 Dec 2006

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The EVM provides a convenient method for evaluating the performance of a charge managementand system power solution for portable applications using the bq24031. A fully designed and tested module is presented. The bq24030/1 has a LDO 6 V regulator connected to the OUT pin. The intent of this (...)

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TEMPSENSE-SW — 温度传感设计软件

The TempSense Designer software allows the user to easily design temperature sensing circuits for many of the Texas Instruments battery charger devices. A full listing of the supported devices is included under the "Support" menu in the program. The user can use the thermisters included in the (...)
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VQFN (RHL) 20 了解详情

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